Merge pull request #1493 from TanekLiang/hifive1-pr
[bsp] add hifive1 bsp support
This commit is contained in:
Bernard Xiong
GitHub
commit
63c4373a5e
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@ -0,0 +1,252 @@
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#
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# Automatically generated file; DO NOT EDIT.
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# RT-Thread Configuration
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#
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#
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# RT-Thread Kernel
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#
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CONFIG_RT_NAME_MAX=32
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CONFIG_RT_ALIGN_SIZE=4
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# CONFIG_RT_THREAD_PRIORITY_8 is not set
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# CONFIG_RT_THREAD_PRIORITY_32 is not set
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CONFIG_RT_THREAD_PRIORITY_256=y
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CONFIG_RT_THREAD_PRIORITY_MAX=256
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CONFIG_RT_TICK_PER_SECOND=100
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CONFIG_RT_DEBUG=y
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CONFIG_RT_USING_OVERFLOW_CHECK=y
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CONFIG_RT_DEBUG_INIT=0
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CONFIG_RT_DEBUG_THREAD=0
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CONFIG_RT_USING_HOOK=y
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CONFIG_IDLE_THREAD_STACK_SIZE=1024
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# CONFIG_RT_USING_TIMER_SOFT is not set
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#
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# Inter-Thread communication
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#
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CONFIG_RT_USING_SEMAPHORE=y
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CONFIG_RT_USING_MUTEX=y
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CONFIG_RT_USING_EVENT=y
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CONFIG_RT_USING_MAILBOX=y
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CONFIG_RT_USING_MESSAGEQUEUE=y
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# CONFIG_RT_USING_SIGNALS is not set
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#
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# Memory Management
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#
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CONFIG_RT_USING_MEMPOOL=y
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# CONFIG_RT_USING_MEMHEAP is not set
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# CONFIG_RT_USING_NOHEAP is not set
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CONFIG_RT_USING_SMALL_MEM=y
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# CONFIG_RT_USING_SLAB is not set
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CONFIG_RT_USING_MEMTRACE=y
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CONFIG_RT_USING_HEAP=y
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#
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# Kernel Device Object
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#
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CONFIG_RT_USING_DEVICE=y
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# CONFIG_RT_USING_INTERRUPT_INFO is not set
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CONFIG_RT_USING_CONSOLE=y
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CONFIG_RT_CONSOLEBUF_SIZE=128
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CONFIG_RT_CONSOLE_DEVICE_NAME="dusart"
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# CONFIG_RT_USING_MODULE is not set
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#
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# RT-Thread Components
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#
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CONFIG_RT_USING_COMPONENTS_INIT=y
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CONFIG_RT_USING_USER_MAIN=y
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CONFIG_RT_MAIN_THREAD_STACK_SIZE=2048
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#
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# C++ features
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#
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# CONFIG_RT_USING_CPLUSPLUS is not set
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#
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# Command shell
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#
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CONFIG_RT_USING_FINSH=y
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CONFIG_FINSH_THREAD_NAME="tshell"
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CONFIG_FINSH_USING_HISTORY=y
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CONFIG_FINSH_HISTORY_LINES=5
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CONFIG_FINSH_USING_SYMTAB=y
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CONFIG_FINSH_USING_DESCRIPTION=y
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# CONFIG_FINSH_ECHO_DISABLE_DEFAULT is not set
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CONFIG_FINSH_THREAD_PRIORITY=20
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CONFIG_FINSH_THREAD_STACK_SIZE=4096
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CONFIG_FINSH_CMD_SIZE=80
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# CONFIG_FINSH_USING_AUTH is not set
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CONFIG_FINSH_USING_MSH=y
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CONFIG_FINSH_USING_MSH_DEFAULT=y
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CONFIG_FINSH_USING_MSH_ONLY=y
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#
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# Device virtual file system
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#
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# CONFIG_RT_USING_DFS is not set
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#
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# Device Drivers
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#
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CONFIG_RT_USING_DEVICE_IPC=y
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CONFIG_RT_USING_SERIAL=y
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# CONFIG_RT_USING_CAN is not set
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# CONFIG_RT_USING_HWTIMER is not set
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# CONFIG_RT_USING_CPUTIME is not set
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# CONFIG_RT_USING_I2C is not set
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# CONFIG_RT_USING_PIN is not set
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# CONFIG_RT_USING_MTD_NOR is not set
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# CONFIG_RT_USING_MTD_NAND is not set
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# CONFIG_RT_USING_RTC is not set
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# CONFIG_RT_USING_SDIO is not set
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# CONFIG_RT_USING_SPI is not set
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# CONFIG_RT_USING_WDT is not set
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# CONFIG_RT_USING_WIFI is not set
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# CONFIG_RT_USING_AUDIO is not set
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#
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# Using USB
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#
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# CONFIG_RT_USING_USB_HOST is not set
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# CONFIG_RT_USING_USB_DEVICE is not set
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#
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# POSIX layer and C standard library
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#
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CONFIG_RT_USING_LIBC=y
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# CONFIG_RT_USING_PTHREADS is not set
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#
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# Network stack
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#
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#
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# light weight TCP/IP stack
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#
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# CONFIG_RT_USING_LWIP is not set
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#
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# Modbus master and slave stack
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#
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# CONFIG_RT_USING_MODBUS is not set
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#
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# VBUS(Virtual Software BUS)
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#
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# CONFIG_RT_USING_VBUS is not set
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#
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# Utilities
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#
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# CONFIG_RT_USING_LOGTRACE is not set
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# CONFIG_RT_USING_RYM is not set
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#
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# RT-Thread online packages
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#
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#
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# system packages
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#
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#
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# RT-Thread GUI Engine
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#
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# CONFIG_PKG_USING_GUIENGINE is not set
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# CONFIG_PKG_USING_LWEXT4 is not set
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# CONFIG_PKG_USING_PARTITION is not set
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# CONFIG_PKG_USING_SQLITE is not set
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# CONFIG_PKG_USING_RTI is not set
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# CONFIG_PKG_USING_LITTLEVGL2RTT is not set
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#
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# IoT - internet of things
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#
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# CONFIG_PKG_USING_PAHOMQTT is not set
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# CONFIG_PKG_USING_WEBCLIENT is not set
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# CONFIG_PKG_USING_MONGOOSE is not set
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# CONFIG_PKG_USING_WEBTERMINAL is not set
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# CONFIG_PKG_USING_CJSON is not set
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# CONFIG_PKG_USING_LJSON is not set
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# CONFIG_PKG_USING_EZXML is not set
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# CONFIG_PKG_USING_NANOPB is not set
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# CONFIG_PKG_USING_GAGENT_CLOUD is not set
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#
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# Wi-Fi
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#
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#
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# Marvell WiFi
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#
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# CONFIG_PKG_USING_WLANMARVELL is not set
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#
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# Wiced WiFi
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#
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# CONFIG_PKG_USING_WLAN_WICED is not set
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# CONFIG_PKG_USING_COAP is not set
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# CONFIG_PKG_USING_NOPOLL is not set
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# CONFIG_PKG_USING_NETUTILS is not set
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# CONFIG_PKG_USING_ONENET is not set
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#
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# security packages
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#
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# CONFIG_PKG_USING_MBEDTLS is not set
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# CONFIG_PKG_USING_libsodium is not set
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# CONFIG_PKG_USING_TINYCRYPT is not set
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#
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# language packages
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#
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# CONFIG_PKG_USING_JERRYSCRIPT is not set
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# CONFIG_PKG_USING_MICROPYTHON is not set
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#
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# multimedia packages
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#
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# CONFIG_PKG_USING_OPENMV is not set
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#
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# tools packages
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#
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# CONFIG_PKG_USING_CMBACKTRACE is not set
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# CONFIG_PKG_USING_EASYFLASH is not set
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# CONFIG_PKG_USING_EASYLOGGER is not set
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# CONFIG_PKG_USING_SYSTEMVIEW is not set
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# CONFIG_PKG_USING_IPERF is not set
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#
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# miscellaneous packages
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#
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# CONFIG_PKG_USING_FASTLZ is not set
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# CONFIG_PKG_USING_MINILZO is not set
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# CONFIG_PKG_USING_QUICKLZ is not set
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# CONFIG_PKG_USING_MULTIBUTTON is not set
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# CONFIG_PKG_USING_SAMPLES is not set
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# CONFIG_PKG_USING_CANFESTIVAL is not set
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#
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# example package: hello
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#
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# CONFIG_PKG_USING_HELLO is not set
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#
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# Privated Packages of RealThread
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#
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# CONFIG_PKG_USING_CODEC is not set
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# CONFIG_PKG_USING_PLAYER is not set
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# CONFIG_PKG_USING_PERSIMMON_SRC is not set
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#
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# Network Utilities
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#
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# CONFIG_PKG_USING_WLAN_WICED_SRC is not set
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# CONFIG_PKG_USING_CLOUDSDK is not set
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# CONFIG_PKG_USING_COREMARK is not set
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# CONFIG_PKG_USING_POWER_MANAGER is not set
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# CONFIG_PKG_USING_RT_OTA is not set
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# CONFIG_PKG_USING_RT_AT is not set
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@ -0,0 +1,19 @@
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mainmenu "RT-Thread Configuration"
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config $BSP_DIR
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string
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option env="BSP_ROOT"
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default "."
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config $RTT_DIR
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string
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option env="RTT_ROOT"
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default "../.."
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config $PKGS_DIR
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string
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option env="PKGS_ROOT"
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default "packages"
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source "$RTT_DIR/Kconfig"
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source "$PKGS_DIR/Kconfig"
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@ -0,0 +1,69 @@
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# HIFIVE1 #
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## 简介
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[HIFIVE1](https://www.sifive.com/products/hifive1/)是SiFive提供的一款基于RISCV的开发板，搭载SiFive Freedom E310。
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板载主要资源如下：
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| 硬件 | 描述 |
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| -- | -- |
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|CPU| SiFive E31 RISC-V Core |
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|架构| 32-bit RV32IMAC |
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|主频| 320+ MHz |
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|SRAM| 16KB |
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|Flash| 16MB QSPI + 16KB 指令Cache |
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## 编译说明
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HIFIVE1可以自行编译工具链，或者使用SiFive提供的[二进制版本](https://www.sifive.com/products/tools/)。
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## 烧写及执行
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供电方式：开发板使用 Micro USB 线连接电脑和开发板。
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下载程序：参看[hifive1-getting-started](https://static.dev.sifive.com/dev.../hifive1/hifive1-getting-started-v1.0.2.pdf)完成开发环境的配置，运行bsp里的openocd.sh脚本就可以下载程序了。
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### 运行结果
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下载程序之后，连接串口(115200-N-8-1)，可以看到RT-Thread的输出信息：
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```
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\ | /
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- RT - Thread Operating System
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/ | \ 3.0.4 build May 30 2018
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2006 - 2018 Copyright by rt-thread team
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msh >
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```
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## 4. 驱动支持情况及计划
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| 驱动 | 支持情况 | 备注 |
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| ------ | ---- | :------: |
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| UART | 支持 | |
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| GPIO | 未支持 | |
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| SPI | 未支持 | |
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| I2C | 未支持 | |
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### 4.1 IO在板级支持包中的映射情况
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| IO号 | 板级包中的定义 |
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| -- | -- |
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| GPIO19 | LED_GREEN |
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| GPIO21 | LED_BLUE |
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| GPIO22 | LED_RED |
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## 5. 联系人信息
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维护人：
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- [tanek](https://github.com/TanekLiang)
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## 6. 参考
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|
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* [HIFIVE1 Info](https://www.sifive.com/products/hifive1/)
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* [HIFIVE1 Software Development Tools](https://www.sifive.com/products/tools/)
|
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* [hifive1-getting-started-guide](https://www.sifive.com/documentation/boards/hifive1/hifive1-getting-started-guide/)
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* [hifive1-schematics](https://www.sifive.com/documentation/boards/hifive1/hifive1-schematics/)
|
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|
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@ -0,0 +1,18 @@
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# for module compiling
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import os
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Import('RTT_ROOT')
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from building import *
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|
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cwd = str(Dir('#'))
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src = Glob('*.c')
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objs = []
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list = os.listdir(cwd)
|
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|
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for d in list:
|
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path = os.path.join(cwd, d)
|
||||
if os.path.isfile(os.path.join(path, 'SConscript')):
|
||||
objs = objs + SConscript(os.path.join(d, 'SConscript'))
|
||||
|
||||
group = DefineGroup('', src, depend = [''], CPPPATH = [])
|
||||
#objs += group
|
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Return('objs')
|
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@ -0,0 +1,29 @@
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import os
|
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import sys
|
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import rtconfig
|
||||
|
||||
if os.getenv('RTT_ROOT'):
|
||||
RTT_ROOT = os.getenv('RTT_ROOT')
|
||||
else:
|
||||
RTT_ROOT = os.path.normpath(os.getcwd() + '/../..')
|
||||
|
||||
sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
|
||||
from building import *
|
||||
|
||||
TARGET = 'rtthread.' + rtconfig.TARGET_EXT
|
||||
|
||||
env = Environment(tools = ['mingw'],
|
||||
AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
|
||||
CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS,
|
||||
AR = rtconfig.AR, ARFLAGS = '-rc',
|
||||
LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
|
||||
env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
|
||||
|
||||
Export('RTT_ROOT')
|
||||
Export('rtconfig')
|
||||
|
||||
# prepare building environment
|
||||
objs = PrepareBuilding(env, RTT_ROOT)
|
||||
|
||||
# make a building
|
||||
DoBuilding(TARGET, objs)
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
Import('RTT_ROOT')
|
||||
Import('rtconfig')
|
||||
from building import *
|
||||
|
||||
cwd = os.path.join(str(Dir('#')), 'applications')
|
||||
src = Glob('*.c')
|
||||
CPPPATH = [cwd, str(Dir('#'))]
|
||||
|
||||
group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
|
||||
|
||||
Return('group')
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
/*
|
||||
* File : main.c
|
||||
* This file is part of RT-Thread RTOS
|
||||
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Change Logs:
|
||||
* Date Author Notes
|
||||
* 2018-05-30 Tanek first version
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <rtthread.h>
|
||||
|
||||
int main(void)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
Import('RTT_ROOT')
|
||||
Import('rtconfig')
|
||||
from building import *
|
||||
|
||||
cwd = os.path.join(str(Dir('#')), 'drivers')
|
||||
|
||||
# add the general drvers.
|
||||
src = Glob("*.c")
|
||||
|
||||
CPPPATH = [cwd]
|
||||
|
||||
group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
|
||||
|
||||
Return('group')
|
||||
|
|
@ -0,0 +1,93 @@
|
|||
/*
|
||||
* File : board.c
|
||||
* This file is part of RT-Thread RTOS
|
||||
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Change Logs:
|
||||
* Date Author Notes
|
||||
*/
|
||||
|
||||
#include <interrupt.h>
|
||||
#include <rthw.h>
|
||||
|
||||
#include <board.h>
|
||||
#include <platform.h>
|
||||
#include <encoding.h>
|
||||
#include <interrupt.h>
|
||||
#include <drv_led.h>
|
||||
|
||||
extern void use_default_clocks(void);
|
||||
extern void use_pll(int refsel, int bypass, int r, int f, int q);
|
||||
|
||||
#define TICK_COUNT (2 * RTC_FREQ / RT_TICK_PER_SECOND)
|
||||
|
||||
#define MTIME (*((volatile uint64_t *)(CLINT_CTRL_ADDR + CLINT_MTIME)))
|
||||
#define MTIMECMP (*((volatile uint64_t *)(CLINT_CTRL_ADDR + CLINT_MTIMECMP)))
|
||||
|
||||
/* system tick interrupt */
|
||||
void handle_m_time_interrupt()
|
||||
{
|
||||
MTIMECMP = MTIME + TICK_COUNT;
|
||||
rt_tick_increase();
|
||||
}
|
||||
|
||||
/* fixed misaligned bug for qemu */
|
||||
void *__wrap_memset(void *s, int c, size_t n)
|
||||
{
|
||||
return rt_memset(s, c, n);
|
||||
}
|
||||
|
||||
static void rt_hw_clock_init(void)
|
||||
{
|
||||
use_default_clocks();
|
||||
use_pll(0, 0, 1, 31, 1);
|
||||
}
|
||||
|
||||
static void rt_hw_timer_init(void)
|
||||
{
|
||||
MTIMECMP = MTIME + TICK_COUNT;
|
||||
|
||||
/* enable timer interrupt*/
|
||||
set_csr(mie, MIP_MTIP);
|
||||
}
|
||||
|
||||
void rt_hw_board_init(void)
|
||||
{
|
||||
/* initialize the system clock */
|
||||
rt_hw_clock_init();
|
||||
|
||||
/* initialize hardware interrupt */
|
||||
rt_hw_interrupt_init();
|
||||
|
||||
/* initialize timer0 */
|
||||
rt_hw_timer_init();
|
||||
|
||||
#ifdef RT_USING_HEAP
|
||||
rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
|
||||
#endif
|
||||
|
||||
#ifdef RT_USING_COMPONENTS_INIT
|
||||
rt_components_board_init();
|
||||
#endif
|
||||
|
||||
#ifdef RT_USING_CONSOLE
|
||||
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
|
||||
#endif
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
/*
|
||||
* File : board.h
|
||||
* This file is part of RT-Thread RTOS
|
||||
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Change Logs:
|
||||
* Date Author Notes
|
||||
*/
|
||||
|
||||
#ifndef __BOARD__
|
||||
#define __BOARD__
|
||||
|
||||
extern void *_end;
|
||||
extern void *_heap_end;
|
||||
#define HEAP_BEGIN &_end
|
||||
#define HEAP_END &_heap_end
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,125 @@
|
|||
/*
|
||||
* File : drv_usart.c
|
||||
* This file is part of RT-Thread RTOS
|
||||
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Change Logs:
|
||||
* Date Author Notes
|
||||
*/
|
||||
|
||||
#include <rtdevice.h>
|
||||
|
||||
#include <encoding.h>
|
||||
#include <platform.h>
|
||||
#include <interrupt.h>
|
||||
|
||||
static void usart_handler(int vector, void *param)
|
||||
{
|
||||
rt_hw_serial_isr((struct rt_serial_device *)param, RT_SERIAL_EVENT_RX_IND);
|
||||
}
|
||||
|
||||
static rt_err_t usart_configure(struct rt_serial_device *serial,
|
||||
struct serial_configure *cfg)
|
||||
{
|
||||
RT_ASSERT(serial != RT_NULL);
|
||||
RT_ASSERT(cfg != RT_NULL);
|
||||
|
||||
GPIO_REG(GPIO_IOF_SEL) &= ~IOF0_UART0_MASK;
|
||||
GPIO_REG(GPIO_IOF_EN) |= IOF0_UART0_MASK;
|
||||
|
||||
UART0_REG(UART_REG_DIV) = get_cpu_freq() / cfg->baud_rate - 1;
|
||||
UART0_REG(UART_REG_TXCTRL) |= UART_TXEN;
|
||||
UART0_REG(UART_REG_RXCTRL) |= UART_RXEN;
|
||||
UART0_REG(UART_REG_IE) = UART_IP_RXWM;
|
||||
|
||||
return RT_EOK;
|
||||
}
|
||||
|
||||
static rt_err_t usart_control(struct rt_serial_device *serial,
|
||||
int cmd, void *arg)
|
||||
{
|
||||
RT_ASSERT(serial != RT_NULL);
|
||||
|
||||
switch (cmd)
|
||||
{
|
||||
case RT_DEVICE_CTRL_CLR_INT:
|
||||
break;
|
||||
case RT_DEVICE_CTRL_SET_INT:
|
||||
break;
|
||||
}
|
||||
|
||||
return RT_EOK;
|
||||
}
|
||||
|
||||
static int usart_putc(struct rt_serial_device *serial, char c)
|
||||
{
|
||||
while (UART0_REG(UART_REG_TXFIFO) & 0x80000000) ;
|
||||
UART0_REG(UART_REG_TXFIFO) = c;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int usart_getc(struct rt_serial_device *serial)
|
||||
{
|
||||
rt_int32_t val = UART0_REG(UART_REG_RXFIFO);
|
||||
if (val > 0)
|
||||
return (rt_uint8_t)val;
|
||||
else
|
||||
return -1;
|
||||
}
|
||||
|
||||
static struct rt_uart_ops ops =
|
||||
{
|
||||
usart_configure,
|
||||
usart_control,
|
||||
usart_putc,
|
||||
usart_getc,
|
||||
};
|
||||
|
||||
static struct rt_serial_device serial =
|
||||
{
|
||||
.ops = &ops,
|
||||
.config.baud_rate = BAUD_RATE_115200,
|
||||
.config.bit_order = BIT_ORDER_LSB,
|
||||
.config.data_bits = DATA_BITS_8,
|
||||
.config.parity = PARITY_NONE,
|
||||
.config.stop_bits = STOP_BITS_1,
|
||||
.config.invert = NRZ_NORMAL,
|
||||
.config.bufsz = RT_SERIAL_RB_BUFSZ,
|
||||
};
|
||||
|
||||
int rt_hw_uart_init(void)
|
||||
{
|
||||
rt_hw_serial_register(
|
||||
&serial,
|
||||
"dusart",
|
||||
RT_DEVICE_FLAG_STREAM
|
||||
| RT_DEVICE_FLAG_RDWR
|
||||
| RT_DEVICE_FLAG_INT_RX, RT_NULL);
|
||||
|
||||
rt_hw_interrupt_install(
|
||||
INT_UART0_BASE,
|
||||
usart_handler,
|
||||
(void *) & (serial.parent),
|
||||
"uart interrupt");
|
||||
|
||||
rt_hw_interrupt_unmask(INT_UART0_BASE);
|
||||
|
||||
return 0;
|
||||
}
|
||||
INIT_BOARD_EXPORT(rt_hw_uart_init);
|
||||
|
||||
|
|
@ -0,0 +1,158 @@
|
|||
/*
|
||||
* File : interrupt.c
|
||||
* This file is part of RT-Thread RTOS
|
||||
* COPYRIGHT (C) 2018, RT-Thread Development Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Change Logs:
|
||||
* Date Author Notes
|
||||
*/
|
||||
|
||||
#include <rthw.h>
|
||||
#include <plic_driver.h>
|
||||
#include <platform.h>
|
||||
#include <encoding.h>
|
||||
#include <interrupt.h>
|
||||
|
||||
#define MAX_HANDLERS PLIC_NUM_INTERRUPTS
|
||||
|
||||
/* exception and interrupt handler table */
|
||||
static struct rt_irq_desc irq_desc[MAX_HANDLERS];
|
||||
|
||||
static plic_instance_t g_plic;
|
||||
|
||||
/**
|
||||
* This function will mask a interrupt.
|
||||
* @param vector the interrupt number
|
||||
*/
|
||||
void rt_hw_interrupt_mask(int irq)
|
||||
{
|
||||
PLIC_disable_interrupt(&g_plic, irq);
|
||||
}
|
||||
|
||||
/**
|
||||
* This function will un-mask a interrupt.
|
||||
* @param vector the interrupt number
|
||||
*/
|
||||
void rt_hw_interrupt_unmask(int irq)
|
||||
{
|
||||
PLIC_enable_interrupt(&g_plic, irq);
|
||||
PLIC_set_priority(&g_plic, irq, 1);
|
||||
}
|
||||
|
||||
rt_isr_handler_t rt_hw_interrupt_handle(rt_uint32_t vector, void *param)
|
||||
{
|
||||
rt_kprintf("UN-handled interrupt %d occurred!!!\n", vector);
|
||||
return RT_NULL;
|
||||
}
|
||||
|
||||
void rt_hw_interrupt_init(void)
|
||||
{
|
||||
int idx;
|
||||
|
||||
/* config interrupt vector*/
|
||||
asm volatile(
|
||||
"la t0, trap_entry\n"
|
||||
"csrw mtvec, t0"
|
||||
);
|
||||
|
||||
/* enable global interrupt*/
|
||||
PLIC_init(&g_plic,
|
||||
PLIC_CTRL_ADDR,
|
||||
PLIC_NUM_INTERRUPTS,
|
||||
PLIC_NUM_PRIORITIES);
|
||||
|
||||
/* init exceptions table */
|
||||
for (idx = 0; idx < MAX_HANDLERS; idx++)
|
||||
{
|
||||
rt_hw_interrupt_mask(idx);
|
||||
irq_desc[idx].handler = (rt_isr_handler_t)rt_hw_interrupt_handle;
|
||||
irq_desc[idx].param = RT_NULL;
|
||||
#ifdef RT_USING_INTERRUPT_INFO
|
||||
rt_snprintf(irq_desc[idx].name, RT_NAME_MAX - 1, "default");
|
||||
irq_desc[idx].counter = 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
// enable machine external interrupt
|
||||
set_csr(mie, MIP_MEIP);
|
||||
}
|
||||
|
||||
rt_uint32_t rt_hw_interrupt_get_active(rt_uint32_t fiq_irq)
|
||||
{
|
||||
return (rt_uint32_t)PLIC_claim_interrupt(&g_plic);;
|
||||
}
|
||||
|
||||
void rt_hw_interrupt_ack(rt_uint32_t fiq_irq, rt_uint32_t id)
|
||||
{
|
||||
PLIC_complete_interrupt(&g_plic, id);
|
||||
}
|
||||
|
||||
/**
|
||||
* This function will install a interrupt service routine to a interrupt.
|
||||
* @param vector the interrupt number
|
||||
* @param handler the interrupt service routine to be installed
|
||||
* @param param the interrupt service function parameter
|
||||
* @param name the interrupt name
|
||||
* @return old handler
|
||||
*/
|
||||
rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
|
||||
void *param, char *name)
|
||||
{
|
||||
rt_isr_handler_t old_handler = RT_NULL;
|
||||
|
||||
if(vector < MAX_HANDLERS)
|
||||
{
|
||||
old_handler = irq_desc[vector].handler;
|
||||
if (handler != RT_NULL)
|
||||
{
|
||||
irq_desc[vector].handler = (rt_isr_handler_t)handler;
|
||||
irq_desc[vector].param = param;
|
||||
#ifdef RT_USING_INTERRUPT_INFO
|
||||
rt_snprintf(irq_desc[vector].name, RT_NAME_MAX - 1, "%s", name);
|
||||
irq_desc[vector].counter = 0;
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
return old_handler;
|
||||
}
|
||||
|
||||
/**
|
||||
* This function will be call when external machine-level
|
||||
* interrupt from PLIC occurred.
|
||||
*/
|
||||
void handle_m_ext_interrupt(void)
|
||||
{
|
||||
rt_isr_handler_t isr_func;
|
||||
rt_uint32_t irq;
|
||||
void *param;
|
||||
|
||||
/* get irq number */
|
||||
irq = rt_hw_interrupt_get_active(0);
|
||||
|
||||
/* get interrupt service routine */
|
||||
isr_func = irq_desc[irq].handler;
|
||||
param = irq_desc[irq].param;
|
||||
|
||||
/* turn to interrupt service routine */
|
||||
isr_func(irq, param);
|
||||
rt_hw_interrupt_ack(0, irq);
|
||||
|
||||
#ifdef RT_USING_INTERRUPT_INFO
|
||||
irq_desc[irq].counter ++;
|
||||
#endif
|
||||
}
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
/*
|
||||
* File : interrupt.h
|
||||
* This file is part of RT-Thread RTOS
|
||||
* COPYRIGHT (C) 2018, RT-Thread Development Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Change Logs:
|
||||
* Date Author Notes
|
||||
*/
|
||||
|
||||
#ifndef __INTERRUPT_H__
|
||||
#define __INTERRUPT_H__
|
||||
|
||||
#include <rthw.h>
|
||||
void rt_hw_interrupt_mask(int irq);
|
||||
void rt_hw_interrupt_unmask(int irq);
|
||||
rt_isr_handler_t rt_hw_interrupt_handle(rt_uint32_t vector, void *param);
|
||||
void rt_hw_interrupt_init(void);
|
||||
rt_uint32_t rt_hw_interrupt_get_active(rt_uint32_t fiq_irq);
|
||||
void rt_hw_interrupt_ack(rt_uint32_t fiq_irq, rt_uint32_t id);
|
||||
rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
|
||||
void *param, char *name);
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,206 @@
|
|||
|
||||
This software, except as otherwise noted in subrepositories,
|
||||
is licensed under the Apache 2 license, quoted below.
|
||||
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright 2016 SiFive, Inc.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
|
@ -0,0 +1,143 @@
|
|||
# README #
|
||||
|
||||
This repository, maintained by SiFive, Inc, makes it easy to get started developing software for the Freedom E RISC-V platform.
|
||||
|
||||
### Contents ###
|
||||
|
||||
* RISC-V Software Toolchain
|
||||
* RISC-V Debugging Toolchain
|
||||
* Board Support Packages for FE310 and Development Kits
|
||||
* A Few Example Programs
|
||||
|
||||
### Setting up the SDK ###
|
||||
|
||||
First, clone this repository:
|
||||
|
||||
```
|
||||
git clone --recursive https://github.com/sifive/freedom-e-sdk.git
|
||||
```
|
||||
|
||||
To see Makefile options:
|
||||
|
||||
```
|
||||
cd freedom-e-sdk
|
||||
make help
|
||||
```
|
||||
|
||||
#### Building Tools from Source ####
|
||||
|
||||
Ubuntu packages needed:
|
||||
|
||||
$ sudo apt-get install autoconf automake libmpc-dev libmpfr-dev libgmp-dev gawk bison flex texinfo libtool libusb-1.0-0-dev make g++ pkg-config libexpat1-dev zlib1g-dev
|
||||
|
||||
Next, build the tools:
|
||||
|
||||
```
|
||||
cd freedom-e-sdk
|
||||
make tools [BOARD=freedom-e300-hifive1]
|
||||
```
|
||||
|
||||
If your machine has enough resources, you can speed up the build process by adding `-j n` to `make`, where `n` is the number of processors of your build system.
|
||||
|
||||
|
||||
#### Using Pre-Built Binary Tools ####
|
||||
|
||||
If you would like to avoid compiling the tools from source, they are
|
||||
available as pre-built binaries from
|
||||
|
||||
https://sifive.com/products/tools
|
||||
|
||||
For OpenOCD and/or RISC-V GNU Toolchain,
|
||||
download the .tar.gz for your platform, and unpack it to
|
||||
your desired location. Then, use the `RISC_PATH` and `RISCV_OPENOCD_PATH`
|
||||
variables when attempting to use the tools:
|
||||
|
||||
```
|
||||
cp openocd-<date>-<platform>.tar.gz /my/desired/location/
|
||||
cp riscv64-unknown-elf-gcc-<date>-<platform>.tar.gz /my/desired/location
|
||||
cd /my/desired/location
|
||||
tar -xvf openocd-<date>-<platform>.tar.gz
|
||||
tar -xvf riscv64-unknown-elf-gcc-<date>-<platform>.tar.gz
|
||||
export RISCV_OPENOCD_PATH=/my/desired/location/openocd
|
||||
export RISCV_PATH=/my/desired/location/riscv64-unknown-elf-gcc-<date>-<version>
|
||||
```
|
||||
|
||||
### Updating your SDK ###
|
||||
|
||||
If you'd like to update your SDK to the latest version:
|
||||
|
||||
```
|
||||
cd freedom-e-sdk
|
||||
git pull origin master
|
||||
git submodule update --init --recursive
|
||||
```
|
||||
|
||||
If you would like to recompile the entire toolchain after performing the above:
|
||||
|
||||
```
|
||||
make uninstall
|
||||
make tools
|
||||
```
|
||||
### Using the Tools ###
|
||||
|
||||
To compile a bare-metal RISC-V program:
|
||||
|
||||
```
|
||||
cd freedom-e-sdk
|
||||
make software [PROGRAM=demo_gpio] [BOARD=freedom-e300-hifive1]
|
||||
```
|
||||
|
||||
Run `make help` for more commands.
|
||||
|
||||
### Benchmarking ###
|
||||
|
||||
#### Dhrystone ####
|
||||
|
||||
After setting up the software and debug toolchains, you can build and
|
||||
execute everyone's favorite benchmark as follows:
|
||||
|
||||
- Compile the benchmark with the command `make software PROGRAM=dhrystone`.
|
||||
- Run on the HiFive1 board with the command `make upload PROGRAM=dhrystone`.
|
||||
This will take a few minutes. Sample output is provided below.
|
||||
- Compute DMIPS by dividing the Dhrystones per Second result by 1757, which
|
||||
was the VAX 11/780's performance. In the example below, 729927 / 1757 =
|
||||
415 DMIPS.
|
||||
- Compute DMIPS/MHz by dividing by the clock rate: in the example below,
|
||||
415 / 260 = 1.60 DMIPS/MHz.
|
||||
|
||||
```
|
||||
core freq at 259830579 Hz
|
||||
|
||||
Dhrystone Benchmark, Version 2.1 (Language: C)
|
||||
|
||||
<snip>
|
||||
|
||||
Microseconds for one run through Dhrystone: 1.3
|
||||
Dhrystones per Second: 729927.0
|
||||
```
|
||||
|
||||
#### CoreMark ####
|
||||
|
||||
We cannot distribute the CoreMark benchmark, but following are instructions
|
||||
to download and run the benchmark on the HiFive1 board:
|
||||
|
||||
- Download CoreMark from EEMBC's web site and extract the archive from
|
||||
http://www.eembc.org/coremark/download.php.
|
||||
- Copy the following files from the extracted archive into the
|
||||
`software/coremark` directory in this repository:
|
||||
- `core_list_join.c`
|
||||
- `core_main.c`
|
||||
- `coremark.h`
|
||||
- `core_matrix.c`
|
||||
- `core_state.c`
|
||||
- `core_util.c`
|
||||
- Compile the benchmark with the command `make software PROGRAM=coremark`.
|
||||
- Run on the HiFive1 board with the command `make upload PROGRAM=coremark`.
|
||||
- Divide the reported Iterations/Sec by the reported core frequency in MHz to
|
||||
obtain a CoreMarks/MHz value.
|
||||
|
||||
### For More Information ###
|
||||
|
||||
Documentation, Forums, and much more available at
|
||||
|
||||
[dev.sifive.com](https://dev.sifive.com)
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
# RT-Thread building script for component
|
||||
|
||||
Import('rtconfig')
|
||||
Import('RTT_ROOT')
|
||||
from building import *
|
||||
|
||||
cwd = GetCurrentDir()
|
||||
src = [ 'bsp/drivers/plic/plic_driver.c',
|
||||
'bsp/env/start.S',
|
||||
'bsp/env/freedom-e300-hifive1/init.c']
|
||||
|
||||
CPPPATH = [ cwd + '/bsp/drivers', cwd + '/bsp/drivers/fe300prci', cwd + '/bsp/drivers/plic',
|
||||
cwd + '/bsp/env', cwd + '/bsp/env/freedom-e300-hifive1',
|
||||
cwd + '/bsp/include', cwd + '/bsp/include/sifive', cwd + '/bsp/include/sifive/devices']
|
||||
|
||||
CPPDEFINES = []
|
||||
|
||||
group = DefineGroup('Libraries', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES=CPPDEFINES)
|
||||
|
||||
Return('group')
|
||||
|
|
@ -0,0 +1,252 @@
|
|||
// See LICENSE file for license details
|
||||
|
||||
#include "platform.h"
|
||||
|
||||
#ifdef PRCI_CTRL_ADDR
|
||||
#include "fe300prci/fe300prci_driver.h"
|
||||
#include <unistd.h>
|
||||
|
||||
#define rdmcycle(x) { \
|
||||
uint32_t lo, hi, hi2; \
|
||||
__asm__ __volatile__ ("1:\n\t" \
|
||||
"csrr %0, mcycleh\n\t" \
|
||||
"csrr %1, mcycle\n\t" \
|
||||
"csrr %2, mcycleh\n\t" \
|
||||
"bne %0, %2, 1b\n\t" \
|
||||
: "=r" (hi), "=r" (lo), "=r" (hi2)) ; \
|
||||
*(x) = lo | ((uint64_t) hi << 32); \
|
||||
}
|
||||
|
||||
uint32_t PRCI_measure_mcycle_freq(uint32_t mtime_ticks, uint32_t mtime_freq)
|
||||
{
|
||||
|
||||
uint32_t start_mtime = CLINT_REG(CLINT_MTIME);
|
||||
uint32_t end_mtime = start_mtime + mtime_ticks + 1;
|
||||
|
||||
// Make sure we won't get rollover.
|
||||
while (end_mtime < start_mtime){
|
||||
start_mtime = CLINT_REG(CLINT_MTIME);
|
||||
end_mtime = start_mtime + mtime_ticks + 1;
|
||||
}
|
||||
|
||||
// Don't start measuring until mtime edge.
|
||||
uint32_t tmp = start_mtime;
|
||||
do {
|
||||
start_mtime = CLINT_REG(CLINT_MTIME);
|
||||
} while (start_mtime == tmp);
|
||||
|
||||
uint64_t start_mcycle;
|
||||
rdmcycle(&start_mcycle);
|
||||
|
||||
while (CLINT_REG(CLINT_MTIME) < end_mtime) ;
|
||||
|
||||
uint64_t end_mcycle;
|
||||
rdmcycle(&end_mcycle);
|
||||
uint32_t difference = (uint32_t) (end_mcycle - start_mcycle);
|
||||
|
||||
uint64_t freq = ((uint64_t) difference * mtime_freq) / mtime_ticks;
|
||||
return (uint32_t) freq & 0xFFFFFFFF;
|
||||
|
||||
}
|
||||
|
||||
|
||||
void PRCI_use_hfrosc(int div, int trim)
|
||||
{
|
||||
// Make sure the HFROSC is running at its default setting
|
||||
// It is OK to change this even if we are running off of it.
|
||||
|
||||
PRCI_REG(PRCI_HFROSCCFG) = (ROSC_DIV(div) | ROSC_TRIM(trim) | ROSC_EN(1));
|
||||
|
||||
while ((PRCI_REG(PRCI_HFROSCCFG) & ROSC_RDY(1)) == 0);
|
||||
|
||||
PRCI_REG(PRCI_PLLCFG) &= ~PLL_SEL(1);
|
||||
}
|
||||
|
||||
void PRCI_use_pll(int refsel, int bypass,
|
||||
int r, int f, int q, int finaldiv,
|
||||
int hfroscdiv, int hfrosctrim)
|
||||
{
|
||||
// Ensure that we aren't running off the PLL before we mess with it.
|
||||
if (PRCI_REG(PRCI_PLLCFG) & PLL_SEL(1)) {
|
||||
// Make sure the HFROSC is running at its default setting
|
||||
PRCI_use_hfrosc(4, 16);
|
||||
}
|
||||
|
||||
// Set PLL Source to be HFXOSC if desired.
|
||||
uint32_t config_value = 0;
|
||||
|
||||
config_value |= PLL_REFSEL(refsel);
|
||||
|
||||
if (bypass) {
|
||||
// Bypass
|
||||
config_value |= PLL_BYPASS(1);
|
||||
|
||||
PRCI_REG(PRCI_PLLCFG) = config_value;
|
||||
|
||||
// If we don't have an HFXTAL, this doesn't really matter.
|
||||
// Set our Final output divide to divide-by-1:
|
||||
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV_BY_1(1) | PLL_FINAL_DIV(0));
|
||||
} else {
|
||||
|
||||
// To overclock, use the hfrosc
|
||||
if (hfrosctrim >= 0 && hfroscdiv >= 0) {
|
||||
PRCI_use_hfrosc(hfroscdiv, hfrosctrim);
|
||||
}
|
||||
|
||||
// Set DIV Settings for PLL
|
||||
|
||||
// (Legal values of f_REF are 6-48MHz)
|
||||
|
||||
// Set DIVR to divide-by-2 to get 8MHz frequency
|
||||
// (legal values of f_R are 6-12 MHz)
|
||||
|
||||
config_value |= PLL_BYPASS(1);
|
||||
config_value |= PLL_R(r);
|
||||
|
||||
// Set DIVF to get 512Mhz frequncy
|
||||
// There is an implied multiply-by-2, 16Mhz.
|
||||
// So need to write 32-1
|
||||
// (legal values of f_F are 384-768 MHz)
|
||||
config_value |= PLL_F(f);
|
||||
|
||||
// Set DIVQ to divide-by-2 to get 256 MHz frequency
|
||||
// (legal values of f_Q are 50-400Mhz)
|
||||
config_value |= PLL_Q(q);
|
||||
|
||||
// Set our Final output divide to divide-by-1:
|
||||
if (finaldiv == 1){
|
||||
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV_BY_1(1) | PLL_FINAL_DIV(0));
|
||||
} else {
|
||||
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV(finaldiv-1));
|
||||
}
|
||||
|
||||
PRCI_REG(PRCI_PLLCFG) = config_value;
|
||||
|
||||
// Un-Bypass the PLL.
|
||||
PRCI_REG(PRCI_PLLCFG) &= ~PLL_BYPASS(1);
|
||||
|
||||
// Wait for PLL Lock
|
||||
// Note that the Lock signal can be glitchy.
|
||||
// Need to wait 100 us
|
||||
// RTC is running at 32kHz.
|
||||
// So wait 4 ticks of RTC.
|
||||
uint32_t now = CLINT_REG(CLINT_MTIME);
|
||||
while (CLINT_REG(CLINT_MTIME) - now < 4) ;
|
||||
|
||||
// Now it is safe to check for PLL Lock
|
||||
while ((PRCI_REG(PRCI_PLLCFG) & PLL_LOCK(1)) == 0);
|
||||
|
||||
}
|
||||
|
||||
// Switch over to PLL Clock source
|
||||
PRCI_REG(PRCI_PLLCFG) |= PLL_SEL(1);
|
||||
|
||||
// If we're running off HFXOSC, turn off the HFROSC to
|
||||
// save power.
|
||||
if (refsel) {
|
||||
PRCI_REG(PRCI_HFROSCCFG) &= ~ROSC_EN(1);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
void PRCI_use_default_clocks()
|
||||
{
|
||||
// Turn off the LFROSC
|
||||
AON_REG(AON_LFROSC) &= ~ROSC_EN(1);
|
||||
|
||||
// Use HFROSC
|
||||
PRCI_use_hfrosc(4, 16);
|
||||
}
|
||||
|
||||
void PRCI_use_hfxosc(uint32_t finaldiv)
|
||||
{
|
||||
|
||||
PRCI_use_pll(1, // Use HFXTAL
|
||||
1, // Bypass = 1
|
||||
0, // PLL settings don't matter
|
||||
0, // PLL settings don't matter
|
||||
0, // PLL settings don't matter
|
||||
finaldiv,
|
||||
-1,
|
||||
-1);
|
||||
}
|
||||
|
||||
// This is a generic function, which
|
||||
// doesn't span the entire range of HFROSC settings.
|
||||
// It only adjusts the trim, which can span a hundred MHz or so.
|
||||
// This function does not check the legality of the PLL settings
|
||||
// at all, and it is quite possible to configure invalid PLL settings
|
||||
// this way.
|
||||
// It returns the actual measured CPU frequency.
|
||||
|
||||
uint32_t PRCI_set_hfrosctrim_for_f_cpu(uint32_t f_cpu, PRCI_freq_target target )
|
||||
{
|
||||
|
||||
uint32_t hfrosctrim = 0;
|
||||
uint32_t hfroscdiv = 4;
|
||||
uint32_t prev_trim = 0;
|
||||
|
||||
// In this function we use PLL settings which
|
||||
// will give us a 32x multiplier from the output
|
||||
// of the HFROSC source to the output of the
|
||||
// PLL. We first measure our HFROSC to get the
|
||||
// right trim, then finally use it as the PLL source.
|
||||
// We should really check here that the f_cpu
|
||||
// requested is something in the limit of the PLL. For
|
||||
// now that is up to the user.
|
||||
|
||||
// This will undershoot for frequencies not divisible by 16.
|
||||
uint32_t desired_hfrosc_freq = (f_cpu/ 16);
|
||||
|
||||
PRCI_use_hfrosc(hfroscdiv, hfrosctrim);
|
||||
|
||||
// Ignore the first run (for icache reasons)
|
||||
uint32_t cpu_freq = PRCI_measure_mcycle_freq(3000, RTC_FREQ);
|
||||
|
||||
cpu_freq = PRCI_measure_mcycle_freq(3000, RTC_FREQ);
|
||||
uint32_t prev_freq = cpu_freq;
|
||||
|
||||
while ((cpu_freq < desired_hfrosc_freq) && (hfrosctrim < 0x1F)){
|
||||
prev_trim = hfrosctrim;
|
||||
prev_freq = cpu_freq;
|
||||
hfrosctrim ++;
|
||||
PRCI_use_hfrosc(hfroscdiv, hfrosctrim);
|
||||
cpu_freq = PRCI_measure_mcycle_freq(3000, RTC_FREQ);
|
||||
}
|
||||
|
||||
// We couldn't go low enough
|
||||
if (prev_freq > desired_hfrosc_freq){
|
||||
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
|
||||
cpu_freq = PRCI_measure_mcycle_freq(1000, RTC_FREQ);
|
||||
return cpu_freq;
|
||||
}
|
||||
|
||||
// We couldn't go high enough
|
||||
if (cpu_freq < desired_hfrosc_freq){
|
||||
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
|
||||
cpu_freq = PRCI_measure_mcycle_freq(1000, RTC_FREQ);
|
||||
return cpu_freq;
|
||||
}
|
||||
|
||||
// Check for over/undershoot
|
||||
switch(target) {
|
||||
case(PRCI_FREQ_CLOSEST):
|
||||
if ((desired_hfrosc_freq - prev_freq) < (cpu_freq - desired_hfrosc_freq)) {
|
||||
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
|
||||
} else {
|
||||
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, hfrosctrim);
|
||||
}
|
||||
break;
|
||||
case(PRCI_FREQ_UNDERSHOOT):
|
||||
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
|
||||
break;
|
||||
default:
|
||||
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, hfrosctrim);
|
||||
}
|
||||
|
||||
cpu_freq = PRCI_measure_mcycle_freq(1000, RTC_FREQ);
|
||||
return cpu_freq;
|
||||
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,79 @@
|
|||
// See LICENSE file for license details
|
||||
|
||||
#ifndef _FE300PRCI_DRIVER_H_
|
||||
#define _FE300PRCI_DRIVER_H_
|
||||
|
||||
//__BEGIN_DECLS
|
||||
|
||||
#include <unistd.h>
|
||||
|
||||
typedef enum prci_freq_target {
|
||||
|
||||
PRCI_FREQ_OVERSHOOT,
|
||||
PRCI_FREQ_CLOSEST,
|
||||
PRCI_FREQ_UNDERSHOOT
|
||||
|
||||
} PRCI_freq_target;
|
||||
|
||||
/* Measure and return the approximate frequency of the
|
||||
* CPU, as given by measuring the mcycle counter against
|
||||
* the mtime ticks.
|
||||
*/
|
||||
uint32_t PRCI_measure_mcycle_freq(uint32_t mtime_ticks, uint32_t mtime_freq);
|
||||
|
||||
/* Safely switch over to the HFROSC using the given div
|
||||
* and trim settings.
|
||||
*/
|
||||
void PRCI_use_hfrosc(int div, int trim);
|
||||
|
||||
/* Safely switch over to the 16MHz HFXOSC,
|
||||
* applying the finaldiv clock divider (1 is the lowest
|
||||
* legal value).
|
||||
*/
|
||||
void PRCI_use_hfxosc(uint32_t finaldiv);
|
||||
|
||||
/* Safely switch over to the PLL using the given
|
||||
* settings.
|
||||
*
|
||||
* Note that not all combinations of the inputs are actually
|
||||
* legal, and this function does not check for their
|
||||
* legality ("safely" means that this function won't turn off
|
||||
* or glitch the clock the CPU is actually running off, but
|
||||
* doesn't protect against you making it too fast or slow.)
|
||||
*/
|
||||
|
||||
void PRCI_use_pll(int refsel, int bypass,
|
||||
int r, int f, int q, int finaldiv,
|
||||
int hfroscdiv, int hfrosctrim);
|
||||
|
||||
/* Use the default clocks configured at reset.
|
||||
* This is ~16Mhz HFROSC and turns off the LFROSC
|
||||
* (on the current FE310 Dev Platforms, an external LFROSC is
|
||||
* used as it is more power efficient).
|
||||
*/
|
||||
void PRCI_use_default_clocks();
|
||||
|
||||
/* This routine will adjust the HFROSC trim
|
||||
* while using HFROSC as the clock source,
|
||||
* measure the resulting frequency, then
|
||||
* use it as the PLL clock source,
|
||||
* in an attempt to get over, under, or close to the
|
||||
* requested frequency. It returns the actual measured
|
||||
* frequency.
|
||||
*
|
||||
* Note that the requested frequency must be within the
|
||||
* range supported by the PLL so not all values are
|
||||
* achievable with this function, and not all
|
||||
* are guaranteed to actually work. The PLL
|
||||
* is rated higher than the hardware.
|
||||
*
|
||||
* There is no check on the desired f_cpu frequency, it
|
||||
* is up to the user to specify something reasonable.
|
||||
*/
|
||||
|
||||
uint32_t PRCI_set_hfrosctrim_for_f_cpu(uint32_t f_cpu, PRCI_freq_target target);
|
||||
|
||||
//__END_DECLS
|
||||
|
||||
#endif
|
||||
|
||||
|
|
@ -0,0 +1,127 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#include "sifive/devices/plic.h"
|
||||
#include "plic/plic_driver.h"
|
||||
#include "platform.h"
|
||||
#include "encoding.h"
|
||||
#include <string.h>
|
||||
|
||||
|
||||
// Note that there are no assertions or bounds checking on these
|
||||
// parameter values.
|
||||
|
||||
void volatile_memzero(uint8_t * base, unsigned int size)
|
||||
{
|
||||
volatile uint8_t * ptr;
|
||||
for (ptr = base; ptr < (base + size); ptr++){
|
||||
*ptr = 0;
|
||||
}
|
||||
}
|
||||
|
||||
void PLIC_init (
|
||||
plic_instance_t * this_plic,
|
||||
uintptr_t base_addr,
|
||||
uint32_t num_sources,
|
||||
uint32_t num_priorities
|
||||
)
|
||||
{
|
||||
|
||||
this_plic->base_addr = base_addr;
|
||||
this_plic->num_sources = num_sources;
|
||||
this_plic->num_priorities = num_priorities;
|
||||
|
||||
// Disable all interrupts (don't assume that these registers are reset).
|
||||
unsigned long hart_id = read_csr(mhartid);
|
||||
volatile_memzero((uint8_t*) (this_plic->base_addr +
|
||||
PLIC_ENABLE_OFFSET +
|
||||
(hart_id << PLIC_ENABLE_SHIFT_PER_TARGET)),
|
||||
(num_sources + 8) / 8);
|
||||
|
||||
// Set all priorities to 0 (equal priority -- don't assume that these are reset).
|
||||
volatile_memzero ((uint8_t *)(this_plic->base_addr +
|
||||
PLIC_PRIORITY_OFFSET),
|
||||
(num_sources + 1) << PLIC_PRIORITY_SHIFT_PER_SOURCE);
|
||||
|
||||
// Set the threshold to 0.
|
||||
volatile plic_threshold* threshold = (plic_threshold*)
|
||||
(this_plic->base_addr +
|
||||
PLIC_THRESHOLD_OFFSET +
|
||||
(hart_id << PLIC_THRESHOLD_SHIFT_PER_TARGET));
|
||||
|
||||
*threshold = 0;
|
||||
|
||||
}
|
||||
|
||||
void PLIC_set_threshold (plic_instance_t * this_plic,
|
||||
plic_threshold threshold){
|
||||
|
||||
unsigned long hart_id = read_csr(mhartid);
|
||||
volatile plic_threshold* threshold_ptr = (plic_threshold*) (this_plic->base_addr +
|
||||
PLIC_THRESHOLD_OFFSET +
|
||||
(hart_id << PLIC_THRESHOLD_SHIFT_PER_TARGET));
|
||||
|
||||
*threshold_ptr = threshold;
|
||||
|
||||
}
|
||||
|
||||
|
||||
void PLIC_enable_interrupt (plic_instance_t * this_plic, plic_source source){
|
||||
|
||||
unsigned long hart_id = read_csr(mhartid);
|
||||
volatile uint8_t * current_ptr = (volatile uint8_t *)(this_plic->base_addr +
|
||||
PLIC_ENABLE_OFFSET +
|
||||
(hart_id << PLIC_ENABLE_SHIFT_PER_TARGET) +
|
||||
(source >> 3));
|
||||
uint8_t current = *current_ptr;
|
||||
current = current | ( 1 << (source & 0x7));
|
||||
*current_ptr = current;
|
||||
|
||||
}
|
||||
|
||||
void PLIC_disable_interrupt (plic_instance_t * this_plic, plic_source source){
|
||||
|
||||
unsigned long hart_id = read_csr(mhartid);
|
||||
volatile uint8_t * current_ptr = (volatile uint8_t *) (this_plic->base_addr +
|
||||
PLIC_ENABLE_OFFSET +
|
||||
(hart_id << PLIC_ENABLE_SHIFT_PER_TARGET) +
|
||||
(source >> 3));
|
||||
uint8_t current = *current_ptr;
|
||||
current = current & ~(( 1 << (source & 0x7)));
|
||||
*current_ptr = current;
|
||||
|
||||
}
|
||||
|
||||
void PLIC_set_priority (plic_instance_t * this_plic, plic_source source, plic_priority priority){
|
||||
|
||||
if (this_plic->num_priorities > 0) {
|
||||
volatile plic_priority * priority_ptr = (volatile plic_priority *)
|
||||
(this_plic->base_addr +
|
||||
PLIC_PRIORITY_OFFSET +
|
||||
(source << PLIC_PRIORITY_SHIFT_PER_SOURCE));
|
||||
*priority_ptr = priority;
|
||||
}
|
||||
}
|
||||
|
||||
plic_source PLIC_claim_interrupt(plic_instance_t * this_plic){
|
||||
|
||||
unsigned long hart_id = read_csr(mhartid);
|
||||
|
||||
volatile plic_source * claim_addr = (volatile plic_source * )
|
||||
(this_plic->base_addr +
|
||||
PLIC_CLAIM_OFFSET +
|
||||
(hart_id << PLIC_CLAIM_SHIFT_PER_TARGET));
|
||||
|
||||
return *claim_addr;
|
||||
|
||||
}
|
||||
|
||||
void PLIC_complete_interrupt(plic_instance_t * this_plic, plic_source source){
|
||||
|
||||
unsigned long hart_id = read_csr(mhartid);
|
||||
volatile plic_source * claim_addr = (volatile plic_source *) (this_plic->base_addr +
|
||||
PLIC_CLAIM_OFFSET +
|
||||
(hart_id << PLIC_CLAIM_SHIFT_PER_TARGET));
|
||||
*claim_addr = source;
|
||||
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,51 @@
|
|||
// See LICENSE file for licence details
|
||||
|
||||
#ifndef PLIC_DRIVER_H
|
||||
#define PLIC_DRIVER_H
|
||||
|
||||
|
||||
//__BEGIN_DECLS
|
||||
|
||||
#include "platform.h"
|
||||
|
||||
typedef struct __plic_instance_t
|
||||
{
|
||||
uintptr_t base_addr;
|
||||
|
||||
uint32_t num_sources;
|
||||
uint32_t num_priorities;
|
||||
|
||||
} plic_instance_t;
|
||||
|
||||
typedef uint32_t plic_source;
|
||||
typedef uint32_t plic_priority;
|
||||
typedef uint32_t plic_threshold;
|
||||
|
||||
void PLIC_init (
|
||||
plic_instance_t * this_plic,
|
||||
uintptr_t base_addr,
|
||||
uint32_t num_sources,
|
||||
uint32_t num_priorities
|
||||
);
|
||||
|
||||
void PLIC_set_threshold (plic_instance_t * this_plic,
|
||||
plic_threshold threshold);
|
||||
|
||||
void PLIC_enable_interrupt (plic_instance_t * this_plic,
|
||||
plic_source source);
|
||||
|
||||
void PLIC_disable_interrupt (plic_instance_t * this_plic,
|
||||
plic_source source);
|
||||
|
||||
void PLIC_set_priority (plic_instance_t * this_plic,
|
||||
plic_source source,
|
||||
plic_priority priority);
|
||||
|
||||
plic_source PLIC_claim_interrupt(plic_instance_t * this_plic);
|
||||
|
||||
void PLIC_complete_interrupt(plic_instance_t * this_plic,
|
||||
plic_source source);
|
||||
|
||||
//__END_DECLS
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,102 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_COREPLEXIP_ARTY_H
|
||||
#define _SIFIVE_COREPLEXIP_ARTY_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
/****************************************************************************
|
||||
* GPIO Connections
|
||||
*****************************************************************************/
|
||||
|
||||
// These are the GPIO bit offsets for the directly driven
|
||||
// RGB LEDs on the Freedom Exx Coreplex IP Evaluation Arty FPGA Dev Kit.
|
||||
// Additional RGB LEDs are driven by the 3 PWM outputs.
|
||||
|
||||
#define RED_LED_OFFSET 0
|
||||
#define GREEN_LED_OFFSET 1
|
||||
#define BLUE_LED_OFFSET 2
|
||||
|
||||
// Switch 3 is used as a GPIO input. (Switch 0 is used to set
|
||||
// the reset vector, the other switches are unused).
|
||||
|
||||
#define SW_3_OFFSET 3
|
||||
|
||||
// These are the buttons which are mapped as inputs.
|
||||
|
||||
#define HAS_BOARD_BUTTONS
|
||||
|
||||
#define BUTTON_0_OFFSET 4
|
||||
#define BUTTON_1_OFFSET 5
|
||||
#define BUTTON_2_OFFSET 6
|
||||
#define BUTTON_3_OFFSET 7
|
||||
|
||||
// These are the bit offsets for the different GPIO pins
|
||||
// mapped onto the PMOD A header.
|
||||
|
||||
#define JA_0_OFFSET 8
|
||||
#define JA_1_OFFSET 9
|
||||
#define JA_2_OFFSET 10
|
||||
#define JA_3_OFFSET 11
|
||||
#define JA_4_OFFSET 12
|
||||
#define JA_5_OFFSET 13
|
||||
#define JA_6_OFFSET 14
|
||||
#define JA_7_OFFSET 15
|
||||
|
||||
// The below gives a mapping between global interrupt
|
||||
// sources and their number. Note that on the coreplex
|
||||
// deliverable, the io_global_interrupts go directly into
|
||||
// the PLIC. The evaluation image on the FPGA mimics a
|
||||
// system with peripheral devices which are driving the
|
||||
// global interrupt lines.
|
||||
// So, on this image, in order to get an interrupt from
|
||||
// e.g. pressing BUTTON_0:
|
||||
// 1) Steps which are external to the delivery coreplex:
|
||||
// a) The corresponding GPIO pin must be configured as in input
|
||||
// b) The "interrupt on fall" bit must be set for the GPIO pin
|
||||
// 2) Steps which would also need to be performed for the delivery coreplex:
|
||||
// a) The corresponding global interrupt, priority, and threshold must be configured in the PLIC.
|
||||
// b) The external interrupt bit must be enabled in MSTATUS
|
||||
// c) Interrupts must be enabled globally in the core.
|
||||
|
||||
// Any of the above GPIO pins can be used as global interrupt
|
||||
// sources by adding their offset to the INT_GPIO_BASE.
|
||||
// For example, the buttons are shown here:
|
||||
|
||||
#define INT_DEVICE_BUTTON_0 (GPIO_INT_BASE + BUTTON_0_OFFSET)
|
||||
#define INT_DEVICE_BUTTON_1 (GPIO_INT_BASE + BUTTON_1_OFFSET)
|
||||
#define INT_DEVICE_BUTTON_2 (GPIO_INT_BASE + BUTTON_2_OFFSET)
|
||||
#define INT_DEVICE_BUTTON_3 (GPIO_INT_BASE + BUTTON_3_OFFSET)
|
||||
|
||||
// In addition, the Switches are mapped directly to
|
||||
// the PLIC (without going through the GPIO Peripheral).
|
||||
|
||||
#define INT_EXT_DEVICE_SW_0 (EXTERNAL_INT_BASE + 0)
|
||||
#define INT_EXT_DEVICE_SW_1 (EXTERNAL_INT_BASE + 1)
|
||||
#define INT_EXT_DEVICE_SW_2 (EXTERNAL_INT_BASE + 2)
|
||||
#define INT_EXT_DEVICE_SW_3 (EXTERNAL_INT_BASE + 3)
|
||||
|
||||
// This gives the mapping from inputs to LOCAL interrupts.
|
||||
|
||||
#define LOCAL_INT_SW_0 0
|
||||
#define LOCAL_INT_SW_1 1
|
||||
#define LOCAL_INT_SW_2 2
|
||||
#define LOCAL_INT_SW_3 3
|
||||
#define LOCAL_INT_BTN_0 4
|
||||
#define LOCAL_INT_BTN_1 5
|
||||
#define LOCAL_INT_BTN_2 6
|
||||
#define LOCAL_INT_BTN_3 7
|
||||
#define LOCAL_INT_JA_0 8
|
||||
#define LOCAL_INT_JA_1 9
|
||||
#define LOCAL_INT_JA_2 10
|
||||
#define LOCAL_INT_JA_3 11
|
||||
#define LOCAL_INT_JA_4 12
|
||||
#define LOCAL_INT_JA_5 13
|
||||
#define LOCAL_INT_JA_6 14
|
||||
#define LOCAL_INT_JA_7 15
|
||||
|
||||
#define RTC_FREQ 32768
|
||||
|
||||
void write_hex(int fd, unsigned long int hex);
|
||||
|
||||
#endif /* _SIFIVE_COREPLEXIP_ARTY_H */
|
||||
|
|
@ -0,0 +1,185 @@
|
|||
OUTPUT_ARCH( "riscv" )
|
||||
|
||||
ENTRY( _start )
|
||||
|
||||
MEMORY
|
||||
{
|
||||
flash (rxai!w) : ORIGIN = 0x40400000, LENGTH = 512M
|
||||
ram (wxa!ri) : ORIGIN = 0x80000000, LENGTH = 16K
|
||||
}
|
||||
|
||||
PHDRS
|
||||
{
|
||||
flash PT_LOAD;
|
||||
ram_init PT_LOAD;
|
||||
ram PT_NULL;
|
||||
}
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
__stack_size = DEFINED(__stack_size) ? __stack_size : 2K;
|
||||
|
||||
.init :
|
||||
{
|
||||
KEEP (*(SORT_NONE(.init)))
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.text :
|
||||
{
|
||||
*(.text.unlikely .text.unlikely.*)
|
||||
*(.text.startup .text.startup.*)
|
||||
*(.text .text.*)
|
||||
*(.gnu.linkonce.t.*)
|
||||
|
||||
|
||||
/* section information for finsh shell */
|
||||
. = ALIGN(4);
|
||||
__fsymtab_start = .;
|
||||
KEEP(*(FSymTab))
|
||||
__fsymtab_end = .;
|
||||
. = ALIGN(4);
|
||||
__vsymtab_start = .;
|
||||
KEEP(*(VSymTab))
|
||||
__vsymtab_end = .;
|
||||
. = ALIGN(4);
|
||||
|
||||
. = ALIGN(4);
|
||||
__rt_init_start = .;
|
||||
KEEP(*(SORT(.rti_fn*)))
|
||||
__rt_init_end = .;
|
||||
. = ALIGN(4);
|
||||
|
||||
/* section information for modules */
|
||||
. = ALIGN(4);
|
||||
__rtmsymtab_start = .;
|
||||
KEEP(*(RTMSymTab))
|
||||
__rtmsymtab_end = .;
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.fini :
|
||||
{
|
||||
KEEP (*(SORT_NONE(.fini)))
|
||||
} >flash AT>flash :flash
|
||||
|
||||
PROVIDE (__etext = .);
|
||||
PROVIDE (_etext = .);
|
||||
PROVIDE (etext = .);
|
||||
|
||||
.rodata :
|
||||
{
|
||||
*(.rdata)
|
||||
*(.rodata .rodata.*)
|
||||
*(.gnu.linkonce.r.*)
|
||||
} >flash AT>flash :flash
|
||||
|
||||
. = ALIGN(4);
|
||||
|
||||
.preinit_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__preinit_array_start = .);
|
||||
KEEP (*(.preinit_array))
|
||||
PROVIDE_HIDDEN (__preinit_array_end = .);
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.init_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__init_array_start = .);
|
||||
KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
|
||||
KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
|
||||
PROVIDE_HIDDEN (__init_array_end = .);
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.fini_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__fini_array_start = .);
|
||||
KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
|
||||
KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
|
||||
PROVIDE_HIDDEN (__fini_array_end = .);
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.ctors :
|
||||
{
|
||||
/* gcc uses crtbegin.o to find the start of
|
||||
the constructors, so we make sure it is
|
||||
first. Because this is a wildcard, it
|
||||
doesn't matter if the user does not
|
||||
actually link against crtbegin.o; the
|
||||
linker won't look for a file to match a
|
||||
wildcard. The wildcard also means that it
|
||||
doesn't matter which directory crtbegin.o
|
||||
is in. */
|
||||
KEEP (*crtbegin.o(.ctors))
|
||||
KEEP (*crtbegin?.o(.ctors))
|
||||
/* We don't want to include the .ctor section from
|
||||
the crtend.o file until after the sorted ctors.
|
||||
The .ctor section from the crtend file contains the
|
||||
end of ctors marker and it must be last */
|
||||
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
|
||||
KEEP (*(SORT(.ctors.*)))
|
||||
KEEP (*(.ctors))
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.dtors :
|
||||
{
|
||||
KEEP (*crtbegin.o(.dtors))
|
||||
KEEP (*crtbegin?.o(.dtors))
|
||||
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
|
||||
KEEP (*(SORT(.dtors.*)))
|
||||
KEEP (*(.dtors))
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.lalign :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _data_lma = . );
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.dalign :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _data = . );
|
||||
} >ram AT>flash :ram_init
|
||||
|
||||
.data :
|
||||
{
|
||||
*(.data .data.*)
|
||||
*(.gnu.linkonce.d.*)
|
||||
. = ALIGN(8);
|
||||
PROVIDE( __global_pointer$ = . + 0x800 );
|
||||
*(.sdata .sdata.*)
|
||||
*(.gnu.linkonce.s.*)
|
||||
. = ALIGN(8);
|
||||
*(.srodata.cst16)
|
||||
*(.srodata.cst8)
|
||||
*(.srodata.cst4)
|
||||
*(.srodata.cst2)
|
||||
*(.srodata .srodata.*)
|
||||
} >ram AT>flash :ram_init
|
||||
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _edata = . );
|
||||
PROVIDE( edata = . );
|
||||
|
||||
PROVIDE( _fbss = . );
|
||||
PROVIDE( __bss_start = . );
|
||||
.bss :
|
||||
{
|
||||
*(.sbss*)
|
||||
*(.gnu.linkonce.sb.*)
|
||||
*(.bss .bss.*)
|
||||
*(.gnu.linkonce.b.*)
|
||||
*(COMMON)
|
||||
. = ALIGN(4);
|
||||
} >ram AT>ram :ram
|
||||
|
||||
. = ALIGN(8);
|
||||
PROVIDE( _end = . );
|
||||
PROVIDE( end = . );
|
||||
|
||||
.stack ORIGIN(ram) + LENGTH(ram) - __stack_size :
|
||||
{
|
||||
PROVIDE( _heap_end = . );
|
||||
. = __stack_size;
|
||||
PROVIDE( _sp = . );
|
||||
} >ram AT>ram :ram
|
||||
}
|
||||
|
|
@ -0,0 +1,98 @@
|
|||
//See LICENSE for license details.
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include "platform.h"
|
||||
#include "encoding.h"
|
||||
|
||||
#define CPU_FREQ 65000000
|
||||
#define XSTR(x) #x
|
||||
#define STR(x) XSTR(x)
|
||||
|
||||
extern int main(int argc, char** argv);
|
||||
extern void trap_entry();
|
||||
|
||||
static unsigned long get_cpu_freq()
|
||||
{
|
||||
return CPU_FREQ;
|
||||
}
|
||||
|
||||
unsigned long get_timer_freq()
|
||||
{
|
||||
return get_cpu_freq();
|
||||
}
|
||||
|
||||
uint64_t get_timer_value()
|
||||
{
|
||||
#if __riscv_xlen == 32
|
||||
while (1) {
|
||||
uint32_t hi = read_csr(mcycleh);
|
||||
uint32_t lo = read_csr(mcycle);
|
||||
if (hi == read_csr(mcycleh))
|
||||
return ((uint64_t)hi << 32) | lo;
|
||||
}
|
||||
#else
|
||||
return read_csr(mcycle);
|
||||
#endif
|
||||
}
|
||||
|
||||
static void uart_init(size_t baud_rate)
|
||||
{
|
||||
UART0_REG(UART_REG_DIV) = (get_cpu_freq() / 2) / baud_rate - 1;
|
||||
UART0_REG(UART_REG_TXCTRL) |= UART_TXEN;
|
||||
}
|
||||
|
||||
|
||||
#ifdef USE_PLIC
|
||||
extern void handle_m_ext_interrupt();
|
||||
#endif
|
||||
|
||||
#ifdef USE_M_TIME
|
||||
extern void handle_m_time_interrupt();
|
||||
#endif
|
||||
|
||||
#ifdef USE_LOCAL_ISR
|
||||
typedef void (*my_interrupt_function_ptr_t) (void);
|
||||
extern my_interrupt_function_ptr_t localISR[];
|
||||
#endif
|
||||
|
||||
uintptr_t handle_trap(uintptr_t mcause, uintptr_t epc)
|
||||
{
|
||||
if (0){
|
||||
#ifdef USE_PLIC
|
||||
// External Machine-Level interrupt from PLIC
|
||||
} else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_EXT)) {
|
||||
handle_m_ext_interrupt();
|
||||
#endif
|
||||
#ifdef USE_M_TIME
|
||||
// External Machine-Level interrupt from PLIC
|
||||
} else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_TIMER)){
|
||||
handle_m_time_interrupt();
|
||||
#endif
|
||||
#ifdef USE_LOCAL_ISR
|
||||
} else if (mcause & MCAUSE_INT) {
|
||||
localISR[mcause & MCAUSE_CAUSE] ();
|
||||
#endif
|
||||
}
|
||||
else {
|
||||
write(1, "Unhandled Trap:\n", 16);
|
||||
_exit(1 + mcause);
|
||||
}
|
||||
return epc;
|
||||
}
|
||||
|
||||
void _init()
|
||||
{
|
||||
#ifndef NO_INIT
|
||||
uart_init(115200);
|
||||
|
||||
puts("core freq at " STR(CPU_FREQ) " Hz\n");
|
||||
|
||||
write_csr(mtvec, &trap_entry);
|
||||
#endif
|
||||
}
|
||||
|
||||
void _fini()
|
||||
{
|
||||
}
|
||||
|
|
@ -0,0 +1,102 @@
|
|||
//See LICENSE for license details.
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include "platform.h"
|
||||
#include "encoding.h"
|
||||
|
||||
#define CPU_FREQ 65000000
|
||||
#define XSTR(x) #x
|
||||
#define STR(x) XSTR(x)
|
||||
|
||||
extern int main(int argc, char** argv);
|
||||
extern void trap_entry();
|
||||
|
||||
static unsigned long get_cpu_freq()
|
||||
{
|
||||
return CPU_FREQ;
|
||||
}
|
||||
|
||||
unsigned long get_timer_freq()
|
||||
{
|
||||
return get_cpu_freq();
|
||||
}
|
||||
|
||||
uint64_t get_timer_value()
|
||||
{
|
||||
#if __riscv_xlen == 32
|
||||
while (1) {
|
||||
uint32_t hi = read_csr(mcycleh);
|
||||
uint32_t lo = read_csr(mcycle);
|
||||
if (hi == read_csr(mcycleh))
|
||||
return ((uint64_t)hi << 32) | lo;
|
||||
}
|
||||
#else
|
||||
return read_csr(mcycle);
|
||||
#endif
|
||||
}
|
||||
|
||||
static void uart_init(size_t baud_rate)
|
||||
{
|
||||
UART0_REG(UART_REG_DIV) = (get_cpu_freq() / 2) / baud_rate - 1;
|
||||
UART0_REG(UART_REG_TXCTRL) |= UART_TXEN;
|
||||
}
|
||||
|
||||
|
||||
#ifdef USE_PLIC
|
||||
extern void handle_m_ext_interrupt();
|
||||
#endif
|
||||
|
||||
#ifdef USE_M_TIME
|
||||
extern void handle_m_time_interrupt();
|
||||
#endif
|
||||
|
||||
#ifdef USE_LOCAL_ISR
|
||||
typedef void (*my_interrupt_function_ptr_t) (void);
|
||||
extern my_interrupt_function_ptr_t localISR[];
|
||||
#endif
|
||||
|
||||
uintptr_t handle_trap(uintptr_t mcause, uintptr_t epc)
|
||||
{
|
||||
if (0){
|
||||
#ifdef USE_PLIC
|
||||
// External Machine-Level interrupt from PLIC
|
||||
} else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_EXT)) {
|
||||
handle_m_ext_interrupt();
|
||||
#endif
|
||||
#ifdef USE_M_TIME
|
||||
// External Machine-Level interrupt from PLIC
|
||||
} else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_TIMER)){
|
||||
handle_m_time_interrupt();
|
||||
#endif
|
||||
#ifdef USE_LOCAL_ISR
|
||||
} else if (mcause & MCAUSE_INT) {
|
||||
localISR[mcause & MCAUSE_CAUSE] ();
|
||||
#endif
|
||||
}
|
||||
else {
|
||||
write(1, "Unhandled Trap:\n", 16);
|
||||
_exit(1 + mcause);
|
||||
}
|
||||
return epc;
|
||||
}
|
||||
|
||||
void _init()
|
||||
{
|
||||
#ifndef NO_INIT
|
||||
uart_init(115200);
|
||||
|
||||
<<<<<<< HEAD
|
||||
puts("core freq at " STR(CPU_FREQ) " Hz\n");
|
||||
=======
|
||||
printf("core freq at %ld Hz\n", get_cpu_freq());
|
||||
>>>>>>> 120f19bbe91e5bda3c777de44618e58d5c8fc2c4
|
||||
|
||||
write_csr(mtvec, &trap_entry);
|
||||
#endif
|
||||
}
|
||||
|
||||
void _fini()
|
||||
{
|
||||
}
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
# JTAG adapter setup
|
||||
adapter_khz 10000
|
||||
|
||||
interface ftdi
|
||||
ftdi_device_desc "Olimex OpenOCD JTAG ARM-USB-TINY-H"
|
||||
ftdi_vid_pid 0x15ba 0x002a
|
||||
|
||||
ftdi_layout_init 0x0808 0x0a1b
|
||||
ftdi_layout_signal nSRST -oe 0x0200
|
||||
#ftdi_layout_signal nTRST -data 0x0100 -oe 0x0100
|
||||
ftdi_layout_signal LED -data 0x0800
|
||||
|
||||
set _CHIPNAME riscv
|
||||
jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x20000001
|
||||
|
||||
set _TARGETNAME $_CHIPNAME.cpu
|
||||
|
||||
target create $_TARGETNAME.0 riscv -chain-position $_TARGETNAME
|
||||
$_TARGETNAME.0 configure -work-area-phys 0x80000000 -work-area-size 10000 -work-area-backup 1
|
||||
|
||||
# Un-comment these two flash lines if you have a SPI flash and want to write
|
||||
# it.
|
||||
flash bank spi0 fespi 0x40000000 0 0 0 $_TARGETNAME.0 0x20004000
|
||||
init
|
||||
if {[ info exists pulse_srst]} {
|
||||
ftdi_set_signal nSRST 0
|
||||
ftdi_set_signal nSRST z
|
||||
}
|
||||
halt
|
||||
#flash protect 0 64 last off
|
||||
echo "Ready for Remote Connections"
|
||||
|
|
@ -0,0 +1,90 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_PLATFORM_H
|
||||
#define _SIFIVE_PLATFORM_H
|
||||
|
||||
// Some things missing from the official encoding.h
|
||||
|
||||
#if __riscv_xlen == 32
|
||||
#define MCAUSE_INT 0x80000000UL
|
||||
#define MCAUSE_CAUSE 0x7FFFFFFFUL
|
||||
#else
|
||||
#define MCAUSE_INT 0x8000000000000000UL
|
||||
#define MCAUSE_CAUSE 0x7FFFFFFFFFFFFFFFUL
|
||||
#endif
|
||||
|
||||
#define IRQ_M_LOCAL 16
|
||||
#define MIP_MLIP(x) (1 << (IRQ_M_LOCAL + x))
|
||||
|
||||
#include "sifive/const.h"
|
||||
#include "sifive/devices/clint.h"
|
||||
#include "sifive/devices/gpio.h"
|
||||
#include "sifive/devices/plic.h"
|
||||
#include "sifive/devices/pwm.h"
|
||||
#include "sifive/devices/spi.h"
|
||||
#include "sifive/devices/uart.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Platform definitions
|
||||
*****************************************************************************/
|
||||
|
||||
// Memory map
|
||||
#define CLINT_CTRL_ADDR _AC(0x02000000,UL)
|
||||
#define GPIO_CTRL_ADDR _AC(0x20002000,UL)
|
||||
#define PLIC_CTRL_ADDR _AC(0x0C000000,UL)
|
||||
#define PWM0_CTRL_ADDR _AC(0x20005000,UL)
|
||||
#define RAM_MEM_ADDR _AC(0x80000000,UL)
|
||||
#define RAM_MEM_SIZE _AC(0x10000,UL)
|
||||
#define SPI0_CTRL_ADDR _AC(0x20004000,UL)
|
||||
#define SPI0_MEM_ADDR _AC(0x40000000,UL)
|
||||
#define SPI0_MEM_SIZE _AC(0x20000000,UL)
|
||||
#define TESTBENCH_MEM_ADDR _AC(0x20000000,UL)
|
||||
#define TESTBENCH_MEM_SIZE _AC(0x10000000,UL)
|
||||
#define TRAPVEC_TABLE_CTRL_ADDR _AC(0x00001010,UL)
|
||||
#define UART0_CTRL_ADDR _AC(0x20000000,UL)
|
||||
|
||||
// IOF masks
|
||||
|
||||
// Interrupt numbers
|
||||
#define RESERVED_INT_BASE 0
|
||||
#define UART0_INT_BASE 1
|
||||
#define EXTERNAL_INT_BASE 2
|
||||
#define SPI0_INT_BASE 6
|
||||
#define GPIO_INT_BASE 7
|
||||
#define PWM0_INT_BASE 23
|
||||
|
||||
// Helper functions
|
||||
#define _REG64(p, i) (*(volatile uint64_t *)((p) + (i)))
|
||||
#define _REG32(p, i) (*(volatile uint32_t *)((p) + (i)))
|
||||
#define _REG16(p, i) (*(volatile uint16_t *)((p) + (i)))
|
||||
// Bulk set bits in `reg` to either 0 or 1.
|
||||
// E.g. SET_BITS(MY_REG, 0x00000007, 0) would generate MY_REG &= ~0x7
|
||||
// E.g. SET_BITS(MY_REG, 0x00000007, 1) would generate MY_REG |= 0x7
|
||||
#define SET_BITS(reg, mask, value) if ((value) == 0) { (reg) &= ~(mask); } else { (reg) |= (mask); }
|
||||
#define CLINT_REG(offset) _REG32(CLINT_CTRL_ADDR, offset)
|
||||
#define GPIO_REG(offset) _REG32(GPIO_CTRL_ADDR, offset)
|
||||
#define PLIC_REG(offset) _REG32(PLIC_CTRL_ADDR, offset)
|
||||
#define PWM0_REG(offset) _REG32(PWM0_CTRL_ADDR, offset)
|
||||
#define SPI0_REG(offset) _REG32(SPI0_CTRL_ADDR, offset)
|
||||
#define TRAPVEC_TABLE_REG(offset) _REG32(TRAPVEC_TABLE_CTRL_ADDR, offset)
|
||||
#define UART0_REG(offset) _REG32(UART0_CTRL_ADDR, offset)
|
||||
#define CLINT_REG64(offset) _REG64(CLINT_CTRL_ADDR, offset)
|
||||
#define GPIO_REG64(offset) _REG64(GPIO_CTRL_ADDR, offset)
|
||||
#define PLIC_REG64(offset) _REG64(PLIC_CTRL_ADDR, offset)
|
||||
#define PWM0_REG64(offset) _REG64(PWM0_CTRL_ADDR, offset)
|
||||
#define SPI0_REG64(offset) _REG64(SPI0_CTRL_ADDR, offset)
|
||||
#define TRAPVEC_TABLE_REG64(offset) _REG64(TRAPVEC_TABLE_CTRL_ADDR, offset)
|
||||
#define UART0_REG64(offset) _REG64(UART0_CTRL_ADDR, offset)
|
||||
|
||||
// Misc
|
||||
|
||||
#define NUM_GPIO 16
|
||||
|
||||
#define PLIC_NUM_INTERRUPTS 28
|
||||
#define PLIC_NUM_PRIORITIES 7
|
||||
|
||||
#define HAS_BOARD_BUTTONS
|
||||
|
||||
#include "coreplexip-arty.h"
|
||||
|
||||
#endif /* _SIFIVE_PLATFORM_H */
|
||||
|
|
@ -0,0 +1,161 @@
|
|||
OUTPUT_ARCH( "riscv" )
|
||||
|
||||
ENTRY( _start )
|
||||
|
||||
MEMORY
|
||||
{
|
||||
ram (wxa!ri) : ORIGIN = 0x80000000, LENGTH = 16K
|
||||
}
|
||||
|
||||
PHDRS
|
||||
{
|
||||
ram PT_LOAD;
|
||||
ram_init PT_LOAD;
|
||||
ram PT_NULL;
|
||||
}
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
__stack_size = DEFINED(__stack_size) ? __stack_size : 1K;
|
||||
|
||||
.init :
|
||||
{
|
||||
KEEP (*(SORT_NONE(.init)))
|
||||
} >ram AT>ram :ram
|
||||
|
||||
.text :
|
||||
{
|
||||
*(.text.unlikely .text.unlikely.*)
|
||||
*(.text.startup .text.startup.*)
|
||||
*(.text .text.*)
|
||||
*(.gnu.linkonce.t.*)
|
||||
} >ram AT>ram :ram
|
||||
|
||||
.fini :
|
||||
{
|
||||
KEEP (*(SORT_NONE(.fini)))
|
||||
} >ram AT>ram :ram
|
||||
|
||||
PROVIDE (__etext = .);
|
||||
PROVIDE (_etext = .);
|
||||
PROVIDE (etext = .);
|
||||
|
||||
.rodata :
|
||||
{
|
||||
*(.rdata)
|
||||
*(.rodata .rodata.*)
|
||||
*(.gnu.linkonce.r.*)
|
||||
} >ram AT>ram :ram
|
||||
|
||||
. = ALIGN(4);
|
||||
|
||||
.preinit_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__preinit_array_start = .);
|
||||
KEEP (*(.preinit_array))
|
||||
PROVIDE_HIDDEN (__preinit_array_end = .);
|
||||
} >ram AT>ram :ram
|
||||
|
||||
.init_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__init_array_start = .);
|
||||
KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
|
||||
KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
|
||||
PROVIDE_HIDDEN (__init_array_end = .);
|
||||
} >ram AT>ram :ram
|
||||
|
||||
.fini_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__fini_array_start = .);
|
||||
KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
|
||||
KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
|
||||
PROVIDE_HIDDEN (__fini_array_end = .);
|
||||
} >ram AT>ram :ram
|
||||
|
||||
.ctors :
|
||||
{
|
||||
/* gcc uses crtbegin.o to find the start of
|
||||
the constructors, so we make sure it is
|
||||
first. Because this is a wildcard, it
|
||||
doesn't matter if the user does not
|
||||
actually link against crtbegin.o; the
|
||||
linker won't look for a file to match a
|
||||
wildcard. The wildcard also means that it
|
||||
doesn't matter which directory crtbegin.o
|
||||
is in. */
|
||||
KEEP (*crtbegin.o(.ctors))
|
||||
KEEP (*crtbegin?.o(.ctors))
|
||||
/* We don't want to include the .ctor section from
|
||||
the crtend.o file until after the sorted ctors.
|
||||
The .ctor section from the crtend file contains the
|
||||
end of ctors marker and it must be last */
|
||||
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
|
||||
KEEP (*(SORT(.ctors.*)))
|
||||
KEEP (*(.ctors))
|
||||
} >ram AT>ram :ram
|
||||
|
||||
.dtors :
|
||||
{
|
||||
KEEP (*crtbegin.o(.dtors))
|
||||
KEEP (*crtbegin?.o(.dtors))
|
||||
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
|
||||
KEEP (*(SORT(.dtors.*)))
|
||||
KEEP (*(.dtors))
|
||||
} >ram AT>ram :ram
|
||||
|
||||
.lalign :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _data_lma = . );
|
||||
} >ram AT>ram :ram
|
||||
|
||||
.dalign :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _data = . );
|
||||
} >ram AT>ram :ram_init
|
||||
|
||||
.data :
|
||||
{
|
||||
*(.data .data.*)
|
||||
*(.gnu.linkonce.d.*)
|
||||
. = ALIGN(8);
|
||||
PROVIDE( __global_pointer$ = . + 0x800 );
|
||||
*(.sdata .sdata.*)
|
||||
*(.gnu.linkonce.s.*)
|
||||
. = ALIGN(8);
|
||||
*(.srodata.cst16)
|
||||
*(.srodata.cst8)
|
||||
*(.srodata.cst4)
|
||||
*(.srodata.cst2)
|
||||
*(.srodata .srodata.*)
|
||||
} >ram AT>ram :ram_init
|
||||
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _edata = . );
|
||||
PROVIDE( edata = . );
|
||||
|
||||
PROVIDE( _fbss = . );
|
||||
PROVIDE( __bss_start = . );
|
||||
.bss :
|
||||
{
|
||||
*(.sbss*)
|
||||
*(.gnu.linkonce.sb.*)
|
||||
*(.bss .bss.*)
|
||||
*(.gnu.linkonce.b.*)
|
||||
*(COMMON)
|
||||
. = ALIGN(4);
|
||||
} >ram AT>ram :ram
|
||||
|
||||
. = ALIGN(8);
|
||||
PROVIDE( _end = . );
|
||||
PROVIDE( end = . );
|
||||
|
||||
.stack :
|
||||
{
|
||||
. = ALIGN(8);
|
||||
. += __stack_size;
|
||||
PROVIDE( _sp = . );
|
||||
PROVIDE( _heap_end = . );
|
||||
} >ram AT>ram :ram
|
||||
}
|
||||
|
|
@ -0,0 +1 @@
|
|||
../coreplexip-e31-arty/flash.lds
|
||||
|
|
@ -0,0 +1 @@
|
|||
../coreplexip-e31-arty/init.c
|
||||
|
|
@ -0,0 +1 @@
|
|||
../coreplexip-e31-arty/openocd.cfg
|
||||
|
|
@ -0,0 +1 @@
|
|||
../coreplexip-e31-arty/platform.h
|
||||
|
|
@ -0,0 +1 @@
|
|||
../coreplexip-e31-arty/scratchpad.lds
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,97 @@
|
|||
// See LICENSE for license details
|
||||
|
||||
#ifndef ENTRY_S
|
||||
#define ENTRY_S
|
||||
|
||||
#include "encoding.h"
|
||||
#include "sifive/bits.h"
|
||||
|
||||
.section .text.entry
|
||||
.align 2
|
||||
.global trap_entry
|
||||
trap_entry:
|
||||
addi sp, sp, -32*REGBYTES
|
||||
|
||||
STORE x1, 1*REGBYTES(sp)
|
||||
STORE x2, 2*REGBYTES(sp)
|
||||
STORE x3, 3*REGBYTES(sp)
|
||||
STORE x4, 4*REGBYTES(sp)
|
||||
STORE x5, 5*REGBYTES(sp)
|
||||
STORE x6, 6*REGBYTES(sp)
|
||||
STORE x7, 7*REGBYTES(sp)
|
||||
STORE x8, 8*REGBYTES(sp)
|
||||
STORE x9, 9*REGBYTES(sp)
|
||||
STORE x10, 10*REGBYTES(sp)
|
||||
STORE x11, 11*REGBYTES(sp)
|
||||
STORE x12, 12*REGBYTES(sp)
|
||||
STORE x13, 13*REGBYTES(sp)
|
||||
STORE x14, 14*REGBYTES(sp)
|
||||
STORE x15, 15*REGBYTES(sp)
|
||||
STORE x16, 16*REGBYTES(sp)
|
||||
STORE x17, 17*REGBYTES(sp)
|
||||
STORE x18, 18*REGBYTES(sp)
|
||||
STORE x19, 19*REGBYTES(sp)
|
||||
STORE x20, 20*REGBYTES(sp)
|
||||
STORE x21, 21*REGBYTES(sp)
|
||||
STORE x22, 22*REGBYTES(sp)
|
||||
STORE x23, 23*REGBYTES(sp)
|
||||
STORE x24, 24*REGBYTES(sp)
|
||||
STORE x25, 25*REGBYTES(sp)
|
||||
STORE x26, 26*REGBYTES(sp)
|
||||
STORE x27, 27*REGBYTES(sp)
|
||||
STORE x28, 28*REGBYTES(sp)
|
||||
STORE x29, 29*REGBYTES(sp)
|
||||
STORE x30, 30*REGBYTES(sp)
|
||||
STORE x31, 31*REGBYTES(sp)
|
||||
|
||||
csrr a0, mcause
|
||||
csrr a1, mepc
|
||||
mv a2, sp
|
||||
call handle_trap
|
||||
csrw mepc, a0
|
||||
|
||||
# Remain in M-mode after mret
|
||||
li t0, MSTATUS_MPP
|
||||
csrs mstatus, t0
|
||||
|
||||
LOAD x1, 1*REGBYTES(sp)
|
||||
LOAD x2, 2*REGBYTES(sp)
|
||||
LOAD x3, 3*REGBYTES(sp)
|
||||
LOAD x4, 4*REGBYTES(sp)
|
||||
LOAD x5, 5*REGBYTES(sp)
|
||||
LOAD x6, 6*REGBYTES(sp)
|
||||
LOAD x7, 7*REGBYTES(sp)
|
||||
LOAD x8, 8*REGBYTES(sp)
|
||||
LOAD x9, 9*REGBYTES(sp)
|
||||
LOAD x10, 10*REGBYTES(sp)
|
||||
LOAD x11, 11*REGBYTES(sp)
|
||||
LOAD x12, 12*REGBYTES(sp)
|
||||
LOAD x13, 13*REGBYTES(sp)
|
||||
LOAD x14, 14*REGBYTES(sp)
|
||||
LOAD x15, 15*REGBYTES(sp)
|
||||
LOAD x16, 16*REGBYTES(sp)
|
||||
LOAD x17, 17*REGBYTES(sp)
|
||||
LOAD x18, 18*REGBYTES(sp)
|
||||
LOAD x19, 19*REGBYTES(sp)
|
||||
LOAD x20, 20*REGBYTES(sp)
|
||||
LOAD x21, 21*REGBYTES(sp)
|
||||
LOAD x22, 22*REGBYTES(sp)
|
||||
LOAD x23, 23*REGBYTES(sp)
|
||||
LOAD x24, 24*REGBYTES(sp)
|
||||
LOAD x25, 25*REGBYTES(sp)
|
||||
LOAD x26, 26*REGBYTES(sp)
|
||||
LOAD x27, 27*REGBYTES(sp)
|
||||
LOAD x28, 28*REGBYTES(sp)
|
||||
LOAD x29, 29*REGBYTES(sp)
|
||||
LOAD x30, 30*REGBYTES(sp)
|
||||
LOAD x31, 31*REGBYTES(sp)
|
||||
|
||||
addi sp, sp, 32*REGBYTES
|
||||
mret
|
||||
|
||||
.weak handle_trap
|
||||
handle_trap:
|
||||
1:
|
||||
j 1b
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1 @@
|
|||
../freedom-e300-hifive1/flash.lds
|
||||
|
|
@ -0,0 +1,87 @@
|
|||
//See LICENSE for license details.
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include "platform.h"
|
||||
#include "encoding.h"
|
||||
|
||||
extern int main(int argc, char** argv);
|
||||
extern void trap_entry();
|
||||
|
||||
static unsigned long get_cpu_freq()
|
||||
{
|
||||
return 65000000;
|
||||
}
|
||||
|
||||
unsigned long get_timer_freq()
|
||||
{
|
||||
return get_cpu_freq();
|
||||
}
|
||||
|
||||
uint64_t get_timer_value()
|
||||
{
|
||||
#if __riscv_xlen == 32
|
||||
while (1) {
|
||||
uint32_t hi = read_csr(mcycleh);
|
||||
uint32_t lo = read_csr(mcycle);
|
||||
if (hi == read_csr(mcycleh))
|
||||
return ((uint64_t)hi << 32) | lo;
|
||||
}
|
||||
#else
|
||||
return read_csr(mcycle);
|
||||
#endif
|
||||
}
|
||||
|
||||
static void uart_init(size_t baud_rate)
|
||||
{
|
||||
GPIO_REG(GPIO_IOF_SEL) &= ~IOF0_UART0_MASK;
|
||||
GPIO_REG(GPIO_IOF_EN) |= IOF0_UART0_MASK;
|
||||
UART0_REG(UART_REG_DIV) = get_cpu_freq() / baud_rate - 1;
|
||||
UART0_REG(UART_REG_TXCTRL) |= UART_TXEN;
|
||||
}
|
||||
|
||||
|
||||
#ifdef USE_PLIC
|
||||
extern void handle_m_ext_interrupt();
|
||||
#endif
|
||||
|
||||
#ifdef USE_M_TIME
|
||||
extern void handle_m_time_interrupt();
|
||||
#endif
|
||||
|
||||
uintptr_t handle_trap(uintptr_t mcause, uintptr_t epc)
|
||||
{
|
||||
if (0){
|
||||
#ifdef USE_PLIC
|
||||
// External Machine-Level interrupt from PLIC
|
||||
} else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_EXT)) {
|
||||
handle_m_ext_interrupt();
|
||||
#endif
|
||||
#ifdef USE_M_TIME
|
||||
// External Machine-Level interrupt from PLIC
|
||||
} else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_TIMER)){
|
||||
handle_m_time_interrupt();
|
||||
#endif
|
||||
}
|
||||
else {
|
||||
write(1, "Unhandled Trap:\n", 16);
|
||||
_exit(1 + mcause);
|
||||
}
|
||||
return epc;
|
||||
}
|
||||
|
||||
void _init()
|
||||
{
|
||||
#ifndef NO_INIT
|
||||
uart_init(115200);
|
||||
|
||||
printf("core freq at %d Hz\n", get_cpu_freq());
|
||||
|
||||
write_csr(mtvec, &trap_entry);
|
||||
#endif
|
||||
}
|
||||
|
||||
void _fini()
|
||||
{
|
||||
}
|
||||
|
|
@ -0,0 +1,30 @@
|
|||
adapter_khz 10000
|
||||
|
||||
#source [find interface/ftdi/olimex-arm-usb-tiny-h.cfg]
|
||||
|
||||
interface ftdi
|
||||
ftdi_device_desc "Olimex OpenOCD JTAG ARM-USB-TINY-H"
|
||||
ftdi_vid_pid 0x15ba 0x002a
|
||||
|
||||
ftdi_layout_init 0x0808 0x0a1b
|
||||
ftdi_layout_signal nSRST -oe 0x0200
|
||||
ftdi_layout_signal nTRST -data 0x0100 -oe 0x0100
|
||||
ftdi_layout_signal LED -data 0x0800
|
||||
#
|
||||
|
||||
set _CHIPNAME riscv
|
||||
jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x10e31913
|
||||
|
||||
set _TARGETNAME $_CHIPNAME.cpu
|
||||
target create $_TARGETNAME riscv -chain-position $_TARGETNAME
|
||||
$_TARGETNAME configure -work-area-phys 0x80000000 -work-area-size 10000 -work-area-backup 1
|
||||
|
||||
flash bank my_first_flash fespi 0x20000000 0 0 0 $_TARGETNAME
|
||||
init
|
||||
#reset
|
||||
if {[ info exists pulse_srst]} {
|
||||
ftdi_set_signal nSRST 0
|
||||
ftdi_set_signal nSRST z
|
||||
}
|
||||
halt
|
||||
#flash protect 0 64 last off
|
||||
|
|
@ -0,0 +1,124 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_PLATFORM_H
|
||||
#define _SIFIVE_PLATFORM_H
|
||||
|
||||
// Some things missing from the official encoding.h
|
||||
#define MCAUSE_INT 0x80000000
|
||||
#define MCAUSE_CAUSE 0x7FFFFFFF
|
||||
|
||||
#include "sifive/const.h"
|
||||
#include "sifive/devices/aon.h"
|
||||
#include "sifive/devices/clint.h"
|
||||
#include "sifive/devices/gpio.h"
|
||||
#include "sifive/devices/plic.h"
|
||||
#include "sifive/devices/pwm.h"
|
||||
#include "sifive/devices/spi.h"
|
||||
#include "sifive/devices/uart.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Platform definitions
|
||||
*****************************************************************************/
|
||||
|
||||
#define TRAPVEC_TABLE_CTRL_ADDR _AC(0x00001010,UL)
|
||||
#define CLINT_CTRL_ADDR _AC(0x02000000,UL)
|
||||
#define PLIC_CTRL_ADDR _AC(0x0C000000,UL)
|
||||
#define AON_CTRL_ADDR _AC(0x10000000,UL)
|
||||
#define GPIO_CTRL_ADDR _AC(0x10012000,UL)
|
||||
#define UART0_CTRL_ADDR _AC(0x10013000,UL)
|
||||
#define SPI0_CTRL_ADDR _AC(0x10014000,UL)
|
||||
#define PWM0_CTRL_ADDR _AC(0x10015000,UL)
|
||||
#define UART1_CTRL_ADDR _AC(0x10023000,UL)
|
||||
#define SPI1_CTRL_ADDR _AC(0x10024000,UL)
|
||||
#define PWM1_CTRL_ADDR _AC(0x10025000,UL)
|
||||
#define SPI2_CTRL_ADDR _AC(0x10034000,UL)
|
||||
#define PWM2_CTRL_ADDR _AC(0x10035000,UL)
|
||||
#define SPI0_MMAP_ADDR _AC(0x20000000,UL)
|
||||
#define MEM_CTRL_ADDR _AC(0x80000000,UL)
|
||||
|
||||
// IOF Mappings
|
||||
#define IOF0_SPI1_MASK _AC(0x000007FC,UL)
|
||||
#define SPI11_NUM_SS (4)
|
||||
#define IOF_SPI1_SS0 (2u)
|
||||
#define IOF_SPI1_SS1 (8u)
|
||||
#define IOF_SPI1_SS2 (9u)
|
||||
#define IOF_SPI1_SS3 (10u)
|
||||
#define IOF_SPI1_MOSI (3u)
|
||||
#define IOF_SPI1_MISO (4u)
|
||||
#define IOF_SPI1_SCK (5u)
|
||||
#define IOF_SPI1_DQ0 (3u)
|
||||
#define IOF_SPI1_DQ1 (4u)
|
||||
#define IOF_SPI1_DQ2 (6u)
|
||||
#define IOF_SPI1_DQ3 (7u)
|
||||
|
||||
#define IOF0_SPI2_MASK _AC(0xFC000000,UL)
|
||||
#define SPI2_NUM_SS (1)
|
||||
#define IOF_SPI2_SS0 (26u)
|
||||
#define IOF_SPI2_MOSI (27u)
|
||||
#define IOF_SPI2_MISO (28u)
|
||||
#define IOF_SPI2_SCK (29u)
|
||||
#define IOF_SPI2_DQ0 (27u)
|
||||
#define IOF_SPI2_DQ1 (28u)
|
||||
#define IOF_SPI2_DQ2 (30u)
|
||||
#define IOF_SPI2_DQ3 (31u)
|
||||
|
||||
#define IOF0_UART0_MASK _AC(0x00030000, UL)
|
||||
#define IOF_UART0_RX (16u)
|
||||
#define IOF_UART0_TX (17u)
|
||||
|
||||
#define IOF0_UART1_MASK _AC(0x03000000, UL)
|
||||
#define IOF_UART1_RX (24u)
|
||||
#define IOF_UART1_TX (25u)
|
||||
|
||||
#define IOF1_PWM0_MASK _AC(0x0000000F, UL)
|
||||
#define IOF1_PWM1_MASK _AC(0x00780000, UL)
|
||||
#define IOF1_PWM2_MASK _AC(0x00003C00, UL)
|
||||
|
||||
// Interrupt Numbers
|
||||
#define INT_RESERVED 0
|
||||
#define INT_WDOGCMP 1
|
||||
#define INT_RTCCMP 2
|
||||
#define INT_UART0_BASE 3
|
||||
#define INT_UART1_BASE 4
|
||||
#define INT_SPI0_BASE 5
|
||||
#define INT_SPI1_BASE 6
|
||||
#define INT_SPI2_BASE 7
|
||||
#define INT_GPIO_BASE 8
|
||||
#define INT_PWM0_BASE 40
|
||||
#define INT_PWM1_BASE 44
|
||||
#define INT_PWM2_BASE 48
|
||||
|
||||
// Helper functions
|
||||
#define _REG32(p, i) (*(volatile uint32_t *) ((p) + (i)))
|
||||
#define _REG32P(p, i) ((volatile uint32_t *) ((p) + (i)))
|
||||
#define AON_REG(offset) _REG32(AON_CTRL_ADDR, offset)
|
||||
#define CLINT_REG(offset) _REG32(CLINT_CTRL_ADDR, offset)
|
||||
#define GPIO_REG(offset) _REG32(GPIO_CTRL_ADDR, offset)
|
||||
#define OTP_REG(offset) _REG32(OTP_CTRL_ADDR, offset)
|
||||
#define PLIC_REG(offset) _REG32(PLIC_CTRL_ADDR, offset)
|
||||
#define PWM0_REG(offset) _REG32(PWM0_CTRL_ADDR, offset)
|
||||
#define PWM1_REG(offset) _REG32(PWM1_CTRL_ADDR, offset)
|
||||
#define PWM2_REG(offset) _REG32(PWM2_CTRL_ADDR, offset)
|
||||
#define SPI0_REG(offset) _REG32(SPI0_CTRL_ADDR, offset)
|
||||
#define SPI1_REG(offset) _REG32(SPI1_CTRL_ADDR, offset)
|
||||
#define SPI2_REG(offset) _REG32(SPI2_CTRL_ADDR, offset)
|
||||
#define UART0_REG(offset) _REG32(UART0_CTRL_ADDR, offset)
|
||||
#define UART1_REG(offset) _REG32(UART1_CTRL_ADDR, offset)
|
||||
|
||||
// Misc
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
|
||||
#define NUM_GPIO 32
|
||||
|
||||
#define PLIC_NUM_INTERRUPTS 52
|
||||
#define PLIC_NUM_PRIORITIES 7
|
||||
|
||||
#define HAS_BOARD_BUTTONS
|
||||
#include "hifive1.h"
|
||||
|
||||
unsigned long get_timer_freq(void);
|
||||
uint64_t get_timer_value(void);
|
||||
|
||||
#endif /* _SIFIVE_PLATFORM_H */
|
||||
|
|
@ -0,0 +1,185 @@
|
|||
OUTPUT_ARCH( "riscv" )
|
||||
|
||||
ENTRY( _start )
|
||||
|
||||
MEMORY
|
||||
{
|
||||
flash (rxai!w) : ORIGIN = 0x20400000, LENGTH = 512M
|
||||
ram (wxa!ri) : ORIGIN = 0x80000000, LENGTH = 16K
|
||||
}
|
||||
|
||||
PHDRS
|
||||
{
|
||||
flash PT_LOAD;
|
||||
ram_init PT_LOAD;
|
||||
ram PT_NULL;
|
||||
}
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
__stack_size = DEFINED(__stack_size) ? __stack_size : 2K;
|
||||
|
||||
.init :
|
||||
{
|
||||
KEEP (*(SORT_NONE(.init)))
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.text :
|
||||
{
|
||||
*(.text.unlikely .text.unlikely.*)
|
||||
*(.text.startup .text.startup.*)
|
||||
*(.text .text.*)
|
||||
*(.gnu.linkonce.t.*)
|
||||
|
||||
/* section information for finsh shell */
|
||||
. = ALIGN(4);
|
||||
__fsymtab_start = .;
|
||||
KEEP(*(FSymTab))
|
||||
__fsymtab_end = .;
|
||||
. = ALIGN(4);
|
||||
__vsymtab_start = .;
|
||||
KEEP(*(VSymTab))
|
||||
__vsymtab_end = .;
|
||||
. = ALIGN(4);
|
||||
|
||||
. = ALIGN(4);
|
||||
__rt_init_start = .;
|
||||
KEEP(*(SORT(.rti_fn*)))
|
||||
__rt_init_end = .;
|
||||
. = ALIGN(4);
|
||||
|
||||
/* section information for modules */
|
||||
. = ALIGN(4);
|
||||
__rtmsymtab_start = .;
|
||||
KEEP(*(RTMSymTab))
|
||||
__rtmsymtab_end = .;
|
||||
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.fini :
|
||||
{
|
||||
KEEP (*(SORT_NONE(.fini)))
|
||||
} >flash AT>flash :flash
|
||||
|
||||
PROVIDE (__etext = .);
|
||||
PROVIDE (_etext = .);
|
||||
PROVIDE (etext = .);
|
||||
|
||||
.rodata :
|
||||
{
|
||||
*(.rdata)
|
||||
*(.rodata .rodata.*)
|
||||
*(.gnu.linkonce.r.*)
|
||||
} >flash AT>flash :flash
|
||||
|
||||
. = ALIGN(4);
|
||||
|
||||
.preinit_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__preinit_array_start = .);
|
||||
KEEP (*(.preinit_array))
|
||||
PROVIDE_HIDDEN (__preinit_array_end = .);
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.init_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__init_array_start = .);
|
||||
KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
|
||||
KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
|
||||
PROVIDE_HIDDEN (__init_array_end = .);
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.fini_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__fini_array_start = .);
|
||||
KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
|
||||
KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
|
||||
PROVIDE_HIDDEN (__fini_array_end = .);
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.ctors :
|
||||
{
|
||||
/* gcc uses crtbegin.o to find the start of
|
||||
the constructors, so we make sure it is
|
||||
first. Because this is a wildcard, it
|
||||
doesn't matter if the user does not
|
||||
actually link against crtbegin.o; the
|
||||
linker won't look for a file to match a
|
||||
wildcard. The wildcard also means that it
|
||||
doesn't matter which directory crtbegin.o
|
||||
is in. */
|
||||
KEEP (*crtbegin.o(.ctors))
|
||||
KEEP (*crtbegin?.o(.ctors))
|
||||
/* We don't want to include the .ctor section from
|
||||
the crtend.o file until after the sorted ctors.
|
||||
The .ctor section from the crtend file contains the
|
||||
end of ctors marker and it must be last */
|
||||
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
|
||||
KEEP (*(SORT(.ctors.*)))
|
||||
KEEP (*(.ctors))
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.dtors :
|
||||
{
|
||||
KEEP (*crtbegin.o(.dtors))
|
||||
KEEP (*crtbegin?.o(.dtors))
|
||||
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
|
||||
KEEP (*(SORT(.dtors.*)))
|
||||
KEEP (*(.dtors))
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.lalign :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _data_lma = . );
|
||||
} >flash AT>flash :flash
|
||||
|
||||
.dalign :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _data = . );
|
||||
} >ram AT>flash :ram_init
|
||||
|
||||
.data :
|
||||
{
|
||||
*(.data .data.*)
|
||||
*(.gnu.linkonce.d.*)
|
||||
. = ALIGN(8);
|
||||
PROVIDE( __global_pointer$ = . + 0x800 );
|
||||
*(.sdata .sdata.*)
|
||||
*(.gnu.linkonce.s.*)
|
||||
. = ALIGN(8);
|
||||
*(.srodata.cst16)
|
||||
*(.srodata.cst8)
|
||||
*(.srodata.cst4)
|
||||
*(.srodata.cst2)
|
||||
*(.srodata .srodata.*)
|
||||
} >ram AT>flash :ram_init
|
||||
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _edata = . );
|
||||
PROVIDE( edata = . );
|
||||
|
||||
PROVIDE( _fbss = . );
|
||||
PROVIDE( __bss_start = . );
|
||||
.bss :
|
||||
{
|
||||
*(.sbss*)
|
||||
*(.gnu.linkonce.sb.*)
|
||||
*(.bss .bss.*)
|
||||
*(.gnu.linkonce.b.*)
|
||||
*(COMMON)
|
||||
. = ALIGN(4);
|
||||
} >ram AT>ram :ram
|
||||
|
||||
. = ALIGN(8);
|
||||
PROVIDE( _end = . );
|
||||
PROVIDE( end = . );
|
||||
|
||||
.stack ORIGIN(ram) + LENGTH(ram) - __stack_size :
|
||||
{
|
||||
PROVIDE( _heap_end = . );
|
||||
. = __stack_size;
|
||||
PROVIDE( _sp = . );
|
||||
} >ram AT>ram :ram
|
||||
}
|
||||
|
|
@ -0,0 +1,238 @@
|
|||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include "platform.h"
|
||||
#include "encoding.h"
|
||||
|
||||
extern int main(int argc, char** argv);
|
||||
extern void trap_entry();
|
||||
|
||||
static unsigned long mtime_lo(void)
|
||||
{
|
||||
return *(volatile unsigned long *)(CLINT_CTRL_ADDR + CLINT_MTIME);
|
||||
}
|
||||
|
||||
#ifdef __riscv32
|
||||
|
||||
static uint32_t mtime_hi(void)
|
||||
{
|
||||
return *(volatile uint32_t *)(CLINT_CTRL_ADDR + CLINT_MTIME + 4);
|
||||
}
|
||||
|
||||
uint64_t get_timer_value()
|
||||
{
|
||||
while (1) {
|
||||
uint32_t hi = mtime_hi();
|
||||
uint32_t lo = mtime_lo();
|
||||
if (hi == mtime_hi())
|
||||
return ((uint64_t)hi << 32) | lo;
|
||||
}
|
||||
}
|
||||
|
||||
#else /* __riscv32 */
|
||||
|
||||
uint64_t get_timer_value()
|
||||
{
|
||||
return mtime_lo();
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
unsigned long get_timer_freq()
|
||||
{
|
||||
return 32768;
|
||||
}
|
||||
|
||||
static void use_hfrosc(int div, int trim)
|
||||
{
|
||||
// Make sure the HFROSC is running at its default setting
|
||||
PRCI_REG(PRCI_HFROSCCFG) = (ROSC_DIV(div) | ROSC_TRIM(trim) | ROSC_EN(1));
|
||||
while ((PRCI_REG(PRCI_HFROSCCFG) & ROSC_RDY(1)) == 0) ;
|
||||
PRCI_REG(PRCI_PLLCFG) &= ~PLL_SEL(1);
|
||||
}
|
||||
|
||||
void use_pll(int refsel, int bypass, int r, int f, int q)
|
||||
{
|
||||
// Ensure that we aren't running off the PLL before we mess with it.
|
||||
if (PRCI_REG(PRCI_PLLCFG) & PLL_SEL(1)) {
|
||||
// Make sure the HFROSC is running at its default setting
|
||||
use_hfrosc(4, 16);
|
||||
}
|
||||
|
||||
// Set PLL Source to be HFXOSC if available.
|
||||
uint32_t config_value = 0;
|
||||
|
||||
config_value |= PLL_REFSEL(refsel);
|
||||
|
||||
if (bypass) {
|
||||
// Bypass
|
||||
config_value |= PLL_BYPASS(1);
|
||||
|
||||
PRCI_REG(PRCI_PLLCFG) = config_value;
|
||||
|
||||
// If we don't have an HFXTAL, this doesn't really matter.
|
||||
// Set our Final output divide to divide-by-1:
|
||||
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV_BY_1(1) | PLL_FINAL_DIV(0));
|
||||
} else {
|
||||
// In case we are executing from QSPI,
|
||||
// (which is quite likely) we need to
|
||||
// set the QSPI clock divider appropriately
|
||||
// before boosting the clock frequency.
|
||||
|
||||
// Div = f_sck/2
|
||||
SPI0_REG(SPI_REG_SCKDIV) = 8;
|
||||
|
||||
// Set DIV Settings for PLL
|
||||
// Both HFROSC and HFXOSC are modeled as ideal
|
||||
// 16MHz sources (assuming dividers are set properly for
|
||||
// HFROSC).
|
||||
// (Legal values of f_REF are 6-48MHz)
|
||||
|
||||
// Set DIVR to divide-by-2 to get 8MHz frequency
|
||||
// (legal values of f_R are 6-12 MHz)
|
||||
|
||||
config_value |= PLL_BYPASS(1);
|
||||
config_value |= PLL_R(r);
|
||||
|
||||
// Set DIVF to get 512Mhz frequncy
|
||||
// There is an implied multiply-by-2, 16Mhz.
|
||||
// So need to write 32-1
|
||||
// (legal values of f_F are 384-768 MHz)
|
||||
config_value |= PLL_F(f);
|
||||
|
||||
// Set DIVQ to divide-by-2 to get 256 MHz frequency
|
||||
// (legal values of f_Q are 50-400Mhz)
|
||||
config_value |= PLL_Q(q);
|
||||
|
||||
// Set our Final output divide to divide-by-1:
|
||||
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV_BY_1(1) | PLL_FINAL_DIV(0));
|
||||
|
||||
PRCI_REG(PRCI_PLLCFG) = config_value;
|
||||
|
||||
// Un-Bypass the PLL.
|
||||
PRCI_REG(PRCI_PLLCFG) &= ~PLL_BYPASS(1);
|
||||
|
||||
// Wait for PLL Lock
|
||||
// Note that the Lock signal can be glitchy.
|
||||
// Need to wait 100 us
|
||||
// RTC is running at 32kHz.
|
||||
// So wait 4 ticks of RTC.
|
||||
uint32_t now = mtime_lo();
|
||||
while (mtime_lo() - now < 4) ;
|
||||
|
||||
// Now it is safe to check for PLL Lock
|
||||
while ((PRCI_REG(PRCI_PLLCFG) & PLL_LOCK(1)) == 0) ;
|
||||
}
|
||||
|
||||
// Switch over to PLL Clock source
|
||||
PRCI_REG(PRCI_PLLCFG) |= PLL_SEL(1);
|
||||
}
|
||||
|
||||
void use_default_clocks()
|
||||
{
|
||||
// Turn off the LFROSC
|
||||
AON_REG(AON_LFROSC) &= ~ROSC_EN(1);
|
||||
|
||||
// Use HFROSC
|
||||
use_hfrosc(4, 16);
|
||||
}
|
||||
|
||||
static unsigned long __attribute__((noinline)) measure_cpu_freq(size_t n)
|
||||
{
|
||||
unsigned long start_mtime, delta_mtime;
|
||||
unsigned long mtime_freq = get_timer_freq();
|
||||
|
||||
// Don't start measuruing until we see an mtime tick
|
||||
unsigned long tmp = mtime_lo();
|
||||
do {
|
||||
start_mtime = mtime_lo();
|
||||
} while (start_mtime == tmp);
|
||||
|
||||
unsigned long start_mcycle = read_csr(mcycle);
|
||||
|
||||
do {
|
||||
delta_mtime = mtime_lo() - start_mtime;
|
||||
} while (delta_mtime < n);
|
||||
|
||||
unsigned long delta_mcycle = read_csr(mcycle) - start_mcycle;
|
||||
|
||||
return (delta_mcycle / delta_mtime) * mtime_freq
|
||||
+ ((delta_mcycle % delta_mtime) * mtime_freq) / delta_mtime;
|
||||
}
|
||||
|
||||
unsigned long get_cpu_freq()
|
||||
{
|
||||
static uint32_t cpu_freq;
|
||||
|
||||
if (!cpu_freq) {
|
||||
// warm up I$
|
||||
measure_cpu_freq(1);
|
||||
// measure for real
|
||||
cpu_freq = measure_cpu_freq(10);
|
||||
}
|
||||
|
||||
return cpu_freq;
|
||||
}
|
||||
|
||||
static void uart_init(size_t baud_rate)
|
||||
{
|
||||
GPIO_REG(GPIO_IOF_SEL) &= ~IOF0_UART0_MASK;
|
||||
GPIO_REG(GPIO_IOF_EN) |= IOF0_UART0_MASK;
|
||||
UART0_REG(UART_REG_DIV) = get_cpu_freq() / baud_rate - 1;
|
||||
UART0_REG(UART_REG_TXCTRL) |= UART_TXEN;
|
||||
}
|
||||
|
||||
|
||||
|
||||
#ifdef USE_PLIC
|
||||
extern void handle_m_ext_interrupt();
|
||||
#endif
|
||||
|
||||
#ifdef USE_M_TIME
|
||||
extern void handle_m_time_interrupt();
|
||||
#endif
|
||||
|
||||
uintptr_t handle_trap(uintptr_t mcause, uintptr_t epc)
|
||||
{
|
||||
if (0){
|
||||
#ifdef USE_PLIC
|
||||
// External Machine-Level interrupt from PLIC
|
||||
} else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_EXT)) {
|
||||
handle_m_ext_interrupt();
|
||||
#endif
|
||||
#ifdef USE_M_TIME
|
||||
// External Machine-Level interrupt from PLIC
|
||||
} else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_TIMER)){
|
||||
handle_m_time_interrupt();
|
||||
#endif
|
||||
}
|
||||
else {
|
||||
write(1, "trap\n", 5);
|
||||
_exit(1 + mcause);
|
||||
}
|
||||
return epc;
|
||||
}
|
||||
|
||||
void _init()
|
||||
{
|
||||
|
||||
#ifndef NO_INIT
|
||||
use_default_clocks();
|
||||
use_pll(0, 0, 1, 31, 1);
|
||||
uart_init(115200);
|
||||
|
||||
printf("core freq at %ld Hz\n", get_cpu_freq());
|
||||
|
||||
write_csr(mtvec, &trap_entry);
|
||||
if (read_csr(misa) & (1 << ('F' - 'A'))) { // if F extension is present
|
||||
write_csr(mstatus, MSTATUS_FS); // allow FPU instructions without trapping
|
||||
write_csr(fcsr, 0); // initialize rounding mode, undefined at reset
|
||||
}
|
||||
#endif
|
||||
|
||||
}
|
||||
|
||||
void _fini()
|
||||
{
|
||||
}
|
||||
|
|
@ -0,0 +1,34 @@
|
|||
adapter_khz 10000
|
||||
|
||||
interface ftdi
|
||||
ftdi_device_desc "Dual RS232-HS"
|
||||
ftdi_vid_pid 0x0403 0x6010
|
||||
|
||||
ftdi_layout_init 0x0008 0x001b
|
||||
ftdi_layout_signal nSRST -oe 0x0020 -data 0x0020
|
||||
|
||||
#Reset Stretcher logic on FE310 is ~1 second long
|
||||
#This doesn't apply if you use
|
||||
# ftdi_set_signal, but still good to document
|
||||
#adapter_nsrst_delay 1500
|
||||
|
||||
set _CHIPNAME riscv
|
||||
jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x10e31913
|
||||
|
||||
set _TARGETNAME $_CHIPNAME.cpu
|
||||
target create $_TARGETNAME riscv -chain-position $_TARGETNAME
|
||||
$_TARGETNAME configure -work-area-phys 0x80000000 -work-area-size 10000 -work-area-backup 1
|
||||
|
||||
flash bank onboard_spi_flash fespi 0x20000000 0 0 0 $_TARGETNAME
|
||||
init
|
||||
#reset -- This type of reset is not implemented yet
|
||||
if {[ info exists pulse_srst]} {
|
||||
ftdi_set_signal nSRST 0
|
||||
ftdi_set_signal nSRST z
|
||||
#Wait for the reset stretcher
|
||||
#It will work without this, but
|
||||
#will incur lots of delays for later commands.
|
||||
sleep 1500
|
||||
}
|
||||
halt
|
||||
#flash protect 0 64 last off
|
||||
|
|
@ -0,0 +1,133 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_PLATFORM_H
|
||||
#define _SIFIVE_PLATFORM_H
|
||||
|
||||
// Some things missing from the official encoding.h
|
||||
#define MCAUSE_INT 0x80000000
|
||||
#define MCAUSE_CAUSE 0x7FFFFFFF
|
||||
|
||||
#include "sifive/const.h"
|
||||
#include "sifive/devices/aon.h"
|
||||
#include "sifive/devices/clint.h"
|
||||
#include "sifive/devices/gpio.h"
|
||||
#include "sifive/devices/otp.h"
|
||||
#include "sifive/devices/plic.h"
|
||||
#include "sifive/devices/prci.h"
|
||||
#include "sifive/devices/pwm.h"
|
||||
#include "sifive/devices/spi.h"
|
||||
#include "sifive/devices/uart.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Platform definitions
|
||||
*****************************************************************************/
|
||||
|
||||
// Memory map
|
||||
#define MASKROM_MEM_ADDR _AC(0x00001000,UL)
|
||||
#define TRAPVEC_TABLE_CTRL_ADDR _AC(0x00001010,UL)
|
||||
#define OTP_MEM_ADDR _AC(0x00020000,UL)
|
||||
#define CLINT_CTRL_ADDR _AC(0x02000000,UL)
|
||||
#define PLIC_CTRL_ADDR _AC(0x0C000000,UL)
|
||||
#define AON_CTRL_ADDR _AC(0x10000000,UL)
|
||||
#define PRCI_CTRL_ADDR _AC(0x10008000,UL)
|
||||
#define OTP_CTRL_ADDR _AC(0x10010000,UL)
|
||||
#define GPIO_CTRL_ADDR _AC(0x10012000,UL)
|
||||
#define UART0_CTRL_ADDR _AC(0x10013000,UL)
|
||||
#define SPI0_CTRL_ADDR _AC(0x10014000,UL)
|
||||
#define PWM0_CTRL_ADDR _AC(0x10015000,UL)
|
||||
#define UART1_CTRL_ADDR _AC(0x10023000,UL)
|
||||
#define SPI1_CTRL_ADDR _AC(0x10024000,UL)
|
||||
#define PWM1_CTRL_ADDR _AC(0x10025000,UL)
|
||||
#define SPI2_CTRL_ADDR _AC(0x10034000,UL)
|
||||
#define PWM2_CTRL_ADDR _AC(0x10035000,UL)
|
||||
#define SPI0_MEM_ADDR _AC(0x20000000,UL)
|
||||
#define MEM_CTRL_ADDR _AC(0x80000000,UL)
|
||||
|
||||
// IOF masks
|
||||
#define IOF0_SPI1_MASK _AC(0x000007FC,UL)
|
||||
#define SPI11_NUM_SS (4)
|
||||
#define IOF_SPI1_SS0 (2u)
|
||||
#define IOF_SPI1_SS1 (8u)
|
||||
#define IOF_SPI1_SS2 (9u)
|
||||
#define IOF_SPI1_SS3 (10u)
|
||||
#define IOF_SPI1_MOSI (3u)
|
||||
#define IOF_SPI1_MISO (4u)
|
||||
#define IOF_SPI1_SCK (5u)
|
||||
#define IOF_SPI1_DQ0 (3u)
|
||||
#define IOF_SPI1_DQ1 (4u)
|
||||
#define IOF_SPI1_DQ2 (6u)
|
||||
#define IOF_SPI1_DQ3 (7u)
|
||||
|
||||
#define IOF0_SPI2_MASK _AC(0xFC000000,UL)
|
||||
#define SPI2_NUM_SS (1)
|
||||
#define IOF_SPI2_SS0 (26u)
|
||||
#define IOF_SPI2_MOSI (27u)
|
||||
#define IOF_SPI2_MISO (28u)
|
||||
#define IOF_SPI2_SCK (29u)
|
||||
#define IOF_SPI2_DQ0 (27u)
|
||||
#define IOF_SPI2_DQ1 (28u)
|
||||
#define IOF_SPI2_DQ2 (30u)
|
||||
#define IOF_SPI2_DQ3 (31u)
|
||||
|
||||
//#define IOF0_I2C_MASK _AC(0x00003000,UL)
|
||||
|
||||
#define IOF0_UART0_MASK _AC(0x00030000, UL)
|
||||
#define IOF_UART0_RX (16u)
|
||||
#define IOF_UART0_TX (17u)
|
||||
|
||||
#define IOF0_UART1_MASK _AC(0x03000000, UL)
|
||||
#define IOF_UART1_RX (24u)
|
||||
#define IOF_UART1_TX (25u)
|
||||
|
||||
#define IOF1_PWM0_MASK _AC(0x0000000F, UL)
|
||||
#define IOF1_PWM1_MASK _AC(0x00780000, UL)
|
||||
#define IOF1_PWM2_MASK _AC(0x00003C00, UL)
|
||||
|
||||
// Interrupt numbers
|
||||
#define INT_RESERVED 0
|
||||
#define INT_WDOGCMP 1
|
||||
#define INT_RTCCMP 2
|
||||
#define INT_UART0_BASE 3
|
||||
#define INT_UART1_BASE 4
|
||||
#define INT_SPI0_BASE 5
|
||||
#define INT_SPI1_BASE 6
|
||||
#define INT_SPI2_BASE 7
|
||||
#define INT_GPIO_BASE 8
|
||||
#define INT_PWM0_BASE 40
|
||||
#define INT_PWM1_BASE 44
|
||||
#define INT_PWM2_BASE 48
|
||||
|
||||
// Helper functions
|
||||
#define _REG32(p, i) (*(volatile uint32_t *) ((p) + (i)))
|
||||
#define _REG32P(p, i) ((volatile uint32_t *) ((p) + (i)))
|
||||
#define AON_REG(offset) _REG32(AON_CTRL_ADDR, offset)
|
||||
#define CLINT_REG(offset) _REG32(CLINT_CTRL_ADDR, offset)
|
||||
#define GPIO_REG(offset) _REG32(GPIO_CTRL_ADDR, offset)
|
||||
#define OTP_REG(offset) _REG32(OTP_CTRL_ADDR, offset)
|
||||
#define PLIC_REG(offset) _REG32(PLIC_CTRL_ADDR, offset)
|
||||
#define PRCI_REG(offset) _REG32(PRCI_CTRL_ADDR, offset)
|
||||
#define PWM0_REG(offset) _REG32(PWM0_CTRL_ADDR, offset)
|
||||
#define PWM1_REG(offset) _REG32(PWM1_CTRL_ADDR, offset)
|
||||
#define PWM2_REG(offset) _REG32(PWM2_CTRL_ADDR, offset)
|
||||
#define SPI0_REG(offset) _REG32(SPI0_CTRL_ADDR, offset)
|
||||
#define SPI1_REG(offset) _REG32(SPI1_CTRL_ADDR, offset)
|
||||
#define SPI2_REG(offset) _REG32(SPI2_CTRL_ADDR, offset)
|
||||
#define UART0_REG(offset) _REG32(UART0_CTRL_ADDR, offset)
|
||||
#define UART1_REG(offset) _REG32(UART1_CTRL_ADDR, offset)
|
||||
|
||||
// Misc
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#define NUM_GPIO 32
|
||||
|
||||
#define PLIC_NUM_INTERRUPTS 52
|
||||
#define PLIC_NUM_PRIORITIES 7
|
||||
|
||||
#include "hifive1.h"
|
||||
|
||||
unsigned long get_cpu_freq(void);
|
||||
unsigned long get_timer_freq(void);
|
||||
uint64_t get_timer_value(void);
|
||||
|
||||
#endif /* _SIFIVE_PLATFORM_H */
|
||||
|
|
@ -0,0 +1,81 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_HIFIVE1_H
|
||||
#define _SIFIVE_HIFIVE1_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
/****************************************************************************
|
||||
* GPIO Connections
|
||||
*****************************************************************************/
|
||||
|
||||
// These are the GPIO bit offsets for the RGB LED on HiFive1 Board.
|
||||
// These are also mapped to RGB LEDs on the Freedom E300 Arty
|
||||
// FPGA
|
||||
// Dev Kit.
|
||||
|
||||
#define RED_LED_OFFSET 22
|
||||
#define GREEN_LED_OFFSET 19
|
||||
#define BLUE_LED_OFFSET 21
|
||||
|
||||
// These are the GPIO bit offsets for the differen digital pins
|
||||
// on the headers for both the HiFive1 Board and the Freedom E300 Arty FPGA Dev Kit.
|
||||
#define PIN_0_OFFSET 16
|
||||
#define PIN_1_OFFSET 17
|
||||
#define PIN_2_OFFSET 18
|
||||
#define PIN_3_OFFSET 19
|
||||
#define PIN_4_OFFSET 20
|
||||
#define PIN_5_OFFSET 21
|
||||
#define PIN_6_OFFSET 22
|
||||
#define PIN_7_OFFSET 23
|
||||
#define PIN_8_OFFSET 0
|
||||
#define PIN_9_OFFSET 1
|
||||
#define PIN_10_OFFSET 2
|
||||
#define PIN_11_OFFSET 3
|
||||
#define PIN_12_OFFSET 4
|
||||
#define PIN_13_OFFSET 5
|
||||
//#define PIN_14_OFFSET 8 //This pin is not connected on either board.
|
||||
#define PIN_15_OFFSET 9
|
||||
#define PIN_16_OFFSET 10
|
||||
#define PIN_17_OFFSET 11
|
||||
#define PIN_18_OFFSET 12
|
||||
#define PIN_19_OFFSET 13
|
||||
|
||||
// These are *PIN* numbers, not
|
||||
// GPIO Offset Numbers.
|
||||
#define PIN_SPI1_SCK (13u)
|
||||
#define PIN_SPI1_MISO (12u)
|
||||
#define PIN_SPI1_MOSI (11u)
|
||||
#define PIN_SPI1_SS0 (10u)
|
||||
#define PIN_SPI1_SS1 (14u)
|
||||
#define PIN_SPI1_SS2 (15u)
|
||||
#define PIN_SPI1_SS3 (16u)
|
||||
|
||||
#define SS_PIN_TO_CS_ID(x) \
|
||||
((x==PIN_SPI1_SS0 ? 0 : \
|
||||
(x==PIN_SPI1_SS1 ? 1 : \
|
||||
(x==PIN_SPI1_SS2 ? 2 : \
|
||||
(x==PIN_SPI1_SS3 ? 3 : \
|
||||
-1)))))
|
||||
|
||||
|
||||
// These buttons are present only on the Freedom E300 Arty Dev Kit.
|
||||
#ifdef HAS_BOARD_BUTTONS
|
||||
#define BUTTON_0_OFFSET 15
|
||||
#define BUTTON_1_OFFSET 30
|
||||
#define BUTTON_2_OFFSET 31
|
||||
|
||||
#define INT_DEVICE_BUTTON_0 (INT_GPIO_BASE + BUTTON_0_OFFSET)
|
||||
#define INT_DEVICE_BUTTON_1 (INT_GPIO_BASE + BUTTON_1_OFFSET)
|
||||
#define INT_DEVICE_BUTTON_2 (INT_GPIO_BASE + BUTTON_2_OFFSET)
|
||||
|
||||
#endif
|
||||
|
||||
#define HAS_HFXOSC 1
|
||||
#define HAS_LFROSC_BYPASS 1
|
||||
|
||||
#define RTC_FREQ 32768
|
||||
|
||||
void write_hex(int fd, unsigned long int hex);
|
||||
|
||||
#endif /* _SIFIVE_HIFIVE1_H */
|
||||
|
|
@ -0,0 +1,111 @@
|
|||
// See LICENSE for license details.
|
||||
#include <sifive/smp.h>
|
||||
|
||||
/* This is defined in sifive/platform.h, but that can't be included from
|
||||
* assembly. */
|
||||
#define CLINT_CTRL_ADDR 0x02000000
|
||||
|
||||
.section .init
|
||||
.globl _start
|
||||
.type _start,@function
|
||||
|
||||
_start:
|
||||
.cfi_startproc
|
||||
.cfi_undefined ra
|
||||
.option push
|
||||
.option norelax
|
||||
la gp, __global_pointer$
|
||||
.option pop
|
||||
la sp, _sp
|
||||
|
||||
#if defined(ENABLE_SMP)
|
||||
smp_pause(t0, t1)
|
||||
#endif
|
||||
|
||||
/* Load data section */
|
||||
la a0, _data_lma
|
||||
la a1, _data
|
||||
la a2, _edata
|
||||
bgeu a1, a2, 2f
|
||||
1:
|
||||
lw t0, (a0)
|
||||
sw t0, (a1)
|
||||
addi a0, a0, 4
|
||||
addi a1, a1, 4
|
||||
bltu a1, a2, 1b
|
||||
2:
|
||||
|
||||
/* Clear bss section */
|
||||
la a0, __bss_start
|
||||
la a1, _end
|
||||
bgeu a0, a1, 2f
|
||||
1:
|
||||
sw zero, (a0)
|
||||
addi a0, a0, 4
|
||||
bltu a0, a1, 1b
|
||||
2:
|
||||
|
||||
/* Call global constructors */
|
||||
//la a0, __libc_fini_array
|
||||
//call atexit
|
||||
//call __libc_init_array
|
||||
|
||||
#ifndef __riscv_float_abi_soft
|
||||
/* Enable FPU */
|
||||
li t0, MSTATUS_FS
|
||||
csrs mstatus, t0
|
||||
csrr t1, mstatus
|
||||
and t1, t1, t0
|
||||
beqz t1, 1f
|
||||
fssr x0
|
||||
1:
|
||||
#endif
|
||||
|
||||
#if defined(ENABLE_SMP)
|
||||
smp_resume(t0, t1)
|
||||
|
||||
csrr a0, mhartid
|
||||
bnez a0, 2f
|
||||
#endif
|
||||
|
||||
auipc ra, 0
|
||||
addi sp, sp, -16
|
||||
#if __riscv_xlen == 32
|
||||
sw ra, 8(sp)
|
||||
#else
|
||||
sd ra, 8(sp)
|
||||
#endif
|
||||
|
||||
/* argc = argv = 0 */
|
||||
li a0, 0
|
||||
li a1, 0
|
||||
call entry
|
||||
tail exit
|
||||
1:
|
||||
j 1b
|
||||
|
||||
#if defined(ENABLE_SMP)
|
||||
2:
|
||||
la t0, trap_entry
|
||||
csrw mtvec, t0
|
||||
|
||||
csrr a0, mhartid
|
||||
la t1, _sp
|
||||
slli t0, a0, 10
|
||||
sub sp, t1, t0
|
||||
|
||||
auipc ra, 0
|
||||
addi sp, sp, -16
|
||||
#if __riscv_xlen == 32
|
||||
sw ra, 8(sp)
|
||||
#else
|
||||
sd ra, 8(sp)
|
||||
#endif
|
||||
|
||||
call secondary_main
|
||||
tail exit
|
||||
|
||||
1:
|
||||
j 1b
|
||||
#endif
|
||||
.cfi_endproc
|
||||
|
|
@ -0,0 +1,36 @@
|
|||
// See LICENSE for license details.
|
||||
#ifndef _RISCV_BITS_H
|
||||
#define _RISCV_BITS_H
|
||||
|
||||
#define likely(x) __builtin_expect((x), 1)
|
||||
#define unlikely(x) __builtin_expect((x), 0)
|
||||
|
||||
#define ROUNDUP(a, b) ((((a)-1)/(b)+1)*(b))
|
||||
#define ROUNDDOWN(a, b) ((a)/(b)*(b))
|
||||
|
||||
#define MAX(a, b) ((a) > (b) ? (a) : (b))
|
||||
#define MIN(a, b) ((a) < (b) ? (a) : (b))
|
||||
#define CLAMP(a, lo, hi) MIN(MAX(a, lo), hi)
|
||||
|
||||
#define EXTRACT_FIELD(val, which) (((val) & (which)) / ((which) & ~((which)-1)))
|
||||
#define INSERT_FIELD(val, which, fieldval) (((val) & ~(which)) | ((fieldval) * ((which) & ~((which)-1))))
|
||||
|
||||
#define STR(x) XSTR(x)
|
||||
#define XSTR(x) #x
|
||||
|
||||
#if __riscv_xlen == 64
|
||||
# define SLL32 sllw
|
||||
# define STORE sd
|
||||
# define LOAD ld
|
||||
# define LWU lwu
|
||||
# define LOG_REGBYTES 3
|
||||
#else
|
||||
# define SLL32 sll
|
||||
# define STORE sw
|
||||
# define LOAD lw
|
||||
# define LWU lw
|
||||
# define LOG_REGBYTES 2
|
||||
#endif
|
||||
#define REGBYTES (1 << LOG_REGBYTES)
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
// See LICENSE for license details.
|
||||
/* Derived from <linux/const.h> */
|
||||
|
||||
#ifndef _SIFIVE_CONST_H
|
||||
#define _SIFIVE_CONST_H
|
||||
|
||||
#ifdef __ASSEMBLER__
|
||||
#define _AC(X,Y) X
|
||||
#define _AT(T,X) X
|
||||
#else
|
||||
#define _AC(X,Y) (X##Y)
|
||||
#define _AT(T,X) ((T)(X))
|
||||
#endif /* !__ASSEMBLER__*/
|
||||
|
||||
#define _BITUL(x) (_AC(1,UL) << (x))
|
||||
#define _BITULL(x) (_AC(1,ULL) << (x))
|
||||
|
||||
#endif /* _SIFIVE_CONST_H */
|
||||
|
|
@ -0,0 +1,88 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_AON_H
|
||||
#define _SIFIVE_AON_H
|
||||
|
||||
/* Register offsets */
|
||||
|
||||
#define AON_WDOGCFG 0x000
|
||||
#define AON_WDOGCOUNT 0x008
|
||||
#define AON_WDOGS 0x010
|
||||
#define AON_WDOGFEED 0x018
|
||||
#define AON_WDOGKEY 0x01C
|
||||
#define AON_WDOGCMP 0x020
|
||||
|
||||
#define AON_RTCCFG 0x040
|
||||
#define AON_RTCLO 0x048
|
||||
#define AON_RTCHI 0x04C
|
||||
#define AON_RTCS 0x050
|
||||
#define AON_RTCCMP 0x060
|
||||
|
||||
#define AON_BACKUP0 0x080
|
||||
#define AON_BACKUP1 0x084
|
||||
#define AON_BACKUP2 0x088
|
||||
#define AON_BACKUP3 0x08C
|
||||
#define AON_BACKUP4 0x090
|
||||
#define AON_BACKUP5 0x094
|
||||
#define AON_BACKUP6 0x098
|
||||
#define AON_BACKUP7 0x09C
|
||||
#define AON_BACKUP8 0x0A0
|
||||
#define AON_BACKUP9 0x0A4
|
||||
#define AON_BACKUP10 0x0A8
|
||||
#define AON_BACKUP11 0x0AC
|
||||
#define AON_BACKUP12 0x0B0
|
||||
#define AON_BACKUP13 0x0B4
|
||||
#define AON_BACKUP14 0x0B8
|
||||
#define AON_BACKUP15 0x0BC
|
||||
|
||||
#define AON_PMUWAKEUPI0 0x100
|
||||
#define AON_PMUWAKEUPI1 0x104
|
||||
#define AON_PMUWAKEUPI2 0x108
|
||||
#define AON_PMUWAKEUPI3 0x10C
|
||||
#define AON_PMUWAKEUPI4 0x110
|
||||
#define AON_PMUWAKEUPI5 0x114
|
||||
#define AON_PMUWAKEUPI6 0x118
|
||||
#define AON_PMUWAKEUPI7 0x11C
|
||||
#define AON_PMUSLEEPI0 0x120
|
||||
#define AON_PMUSLEEPI1 0x124
|
||||
#define AON_PMUSLEEPI2 0x128
|
||||
#define AON_PMUSLEEPI3 0x12C
|
||||
#define AON_PMUSLEEPI4 0x130
|
||||
#define AON_PMUSLEEPI5 0x134
|
||||
#define AON_PMUSLEEPI6 0x138
|
||||
#define AON_PMUSLEEPI7 0x13C
|
||||
#define AON_PMUIE 0x140
|
||||
#define AON_PMUCAUSE 0x144
|
||||
#define AON_PMUSLEEP 0x148
|
||||
#define AON_PMUKEY 0x14C
|
||||
|
||||
#define AON_LFROSC 0x070
|
||||
/* Constants */
|
||||
|
||||
#define AON_WDOGKEY_VALUE 0x51F15E
|
||||
#define AON_WDOGFEED_VALUE 0xD09F00D
|
||||
|
||||
#define AON_WDOGCFG_SCALE 0x0000000F
|
||||
#define AON_WDOGCFG_RSTEN 0x00000100
|
||||
#define AON_WDOGCFG_ZEROCMP 0x00000200
|
||||
#define AON_WDOGCFG_ENALWAYS 0x00001000
|
||||
#define AON_WDOGCFG_ENCOREAWAKE 0x00002000
|
||||
#define AON_WDOGCFG_CMPIP 0x10000000
|
||||
|
||||
#define AON_RTCCFG_SCALE 0x0000000F
|
||||
#define AON_RTCCFG_ENALWAYS 0x00001000
|
||||
#define AON_RTCCFG_CMPIP 0x10000000
|
||||
|
||||
#define AON_WAKEUPCAUSE_RESET 0x00
|
||||
#define AON_WAKEUPCAUSE_RTC 0x01
|
||||
#define AON_WAKEUPCAUSE_DWAKEUP 0x02
|
||||
#define AON_WAKEUPCAUSE_AWAKEUP 0x03
|
||||
|
||||
#define AON_RESETCAUSE_POWERON 0x0000
|
||||
#define AON_RESETCAUSE_EXTERNAL 0x0100
|
||||
#define AON_RESETCAUSE_WATCHDOG 0x0200
|
||||
|
||||
#define AON_PMUCAUSE_WAKEUPCAUSE 0x00FF
|
||||
#define AON_PMUCAUSE_RESETCAUSE 0xFF00
|
||||
|
||||
#endif /* _SIFIVE_AON_H */
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
// See LICENSE for license details
|
||||
|
||||
#ifndef _SIFIVE_CLINT_H
|
||||
#define _SIFIVE_CLINT_H
|
||||
|
||||
|
||||
#define CLINT_MSIP 0x0000
|
||||
#define CLINT_MSIP_size 0x4
|
||||
#define CLINT_MTIMECMP 0x4000
|
||||
#define CLINT_MTIMECMP_size 0x8
|
||||
#define CLINT_MTIME 0xBFF8
|
||||
#define CLINT_MTIME_size 0x8
|
||||
|
||||
#endif /* _SIFIVE_CLINT_H */
|
||||
|
|
@ -0,0 +1,24 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_GPIO_H
|
||||
#define _SIFIVE_GPIO_H
|
||||
|
||||
#define GPIO_INPUT_VAL (0x00)
|
||||
#define GPIO_INPUT_EN (0x04)
|
||||
#define GPIO_OUTPUT_EN (0x08)
|
||||
#define GPIO_OUTPUT_VAL (0x0C)
|
||||
#define GPIO_PULLUP_EN (0x10)
|
||||
#define GPIO_DRIVE (0x14)
|
||||
#define GPIO_RISE_IE (0x18)
|
||||
#define GPIO_RISE_IP (0x1C)
|
||||
#define GPIO_FALL_IE (0x20)
|
||||
#define GPIO_FALL_IP (0x24)
|
||||
#define GPIO_HIGH_IE (0x28)
|
||||
#define GPIO_HIGH_IP (0x2C)
|
||||
#define GPIO_LOW_IE (0x30)
|
||||
#define GPIO_LOW_IP (0x34)
|
||||
#define GPIO_IOF_EN (0x38)
|
||||
#define GPIO_IOF_SEL (0x3C)
|
||||
#define GPIO_OUTPUT_XOR (0x40)
|
||||
|
||||
#endif /* _SIFIVE_GPIO_H */
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_OTP_H
|
||||
#define _SIFIVE_OTP_H
|
||||
|
||||
/* Register offsets */
|
||||
|
||||
#define OTP_LOCK 0x00
|
||||
#define OTP_CK 0x04
|
||||
#define OTP_OE 0x08
|
||||
#define OTP_SEL 0x0C
|
||||
#define OTP_WE 0x10
|
||||
#define OTP_MR 0x14
|
||||
#define OTP_MRR 0x18
|
||||
#define OTP_MPP 0x1C
|
||||
#define OTP_VRREN 0x20
|
||||
#define OTP_VPPEN 0x24
|
||||
#define OTP_A 0x28
|
||||
#define OTP_D 0x2C
|
||||
#define OTP_Q 0x30
|
||||
#define OTP_READ_TIMINGS 0x34
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef PLIC_H
|
||||
#define PLIC_H
|
||||
|
||||
#include <sifive/const.h>
|
||||
|
||||
// 32 bits per source
|
||||
#define PLIC_PRIORITY_OFFSET _AC(0x0000,UL)
|
||||
#define PLIC_PRIORITY_SHIFT_PER_SOURCE 2
|
||||
// 1 bit per source (1 address)
|
||||
#define PLIC_PENDING_OFFSET _AC(0x1000,UL)
|
||||
#define PLIC_PENDING_SHIFT_PER_SOURCE 0
|
||||
|
||||
//0x80 per target
|
||||
#define PLIC_ENABLE_OFFSET _AC(0x2000,UL)
|
||||
#define PLIC_ENABLE_SHIFT_PER_TARGET 7
|
||||
|
||||
|
||||
#define PLIC_THRESHOLD_OFFSET _AC(0x200000,UL)
|
||||
#define PLIC_CLAIM_OFFSET _AC(0x200004,UL)
|
||||
#define PLIC_THRESHOLD_SHIFT_PER_TARGET 12
|
||||
#define PLIC_CLAIM_SHIFT_PER_TARGET 12
|
||||
|
||||
#define PLIC_MAX_SOURCE 1023
|
||||
#define PLIC_SOURCE_MASK 0x3FF
|
||||
|
||||
#define PLIC_MAX_TARGET 15871
|
||||
#define PLIC_TARGET_MASK 0x3FFF
|
||||
|
||||
#endif /* PLIC_H */
|
||||
|
|
@ -0,0 +1,56 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_PRCI_H
|
||||
#define _SIFIVE_PRCI_H
|
||||
|
||||
/* Register offsets */
|
||||
|
||||
#define PRCI_HFROSCCFG (0x0000)
|
||||
#define PRCI_HFXOSCCFG (0x0004)
|
||||
#define PRCI_PLLCFG (0x0008)
|
||||
#define PRCI_PLLDIV (0x000C)
|
||||
#define PRCI_PROCMONCFG (0x00F0)
|
||||
|
||||
/* Fields */
|
||||
#define ROSC_DIV(x) (((x) & 0x2F) << 0 )
|
||||
#define ROSC_TRIM(x) (((x) & 0x1F) << 16)
|
||||
#define ROSC_EN(x) (((x) & 0x1 ) << 30)
|
||||
#define ROSC_RDY(x) (((x) & 0x1 ) << 31)
|
||||
|
||||
#define XOSC_EN(x) (((x) & 0x1) << 30)
|
||||
#define XOSC_RDY(x) (((x) & 0x1) << 31)
|
||||
|
||||
#define PLL_R(x) (((x) & 0x7) << 0)
|
||||
// single reserved bit for F LSB.
|
||||
#define PLL_F(x) (((x) & 0x3F) << 4)
|
||||
#define PLL_Q(x) (((x) & 0x3) << 10)
|
||||
#define PLL_SEL(x) (((x) & 0x1) << 16)
|
||||
#define PLL_REFSEL(x) (((x) & 0x1) << 17)
|
||||
#define PLL_BYPASS(x) (((x) & 0x1) << 18)
|
||||
#define PLL_LOCK(x) (((x) & 0x1) << 31)
|
||||
|
||||
#define PLL_R_default 0x1
|
||||
#define PLL_F_default 0x1F
|
||||
#define PLL_Q_default 0x3
|
||||
|
||||
#define PLL_REFSEL_HFROSC 0x0
|
||||
#define PLL_REFSEL_HFXOSC 0x1
|
||||
|
||||
#define PLL_SEL_HFROSC 0x0
|
||||
#define PLL_SEL_PLL 0x1
|
||||
|
||||
#define PLL_FINAL_DIV(x) (((x) & 0x3F) << 0)
|
||||
#define PLL_FINAL_DIV_BY_1(x) (((x) & 0x1 ) << 8)
|
||||
|
||||
#define PROCMON_DIV(x) (((x) & 0x1F) << 0)
|
||||
#define PROCMON_TRIM(x) (((x) & 0x1F) << 8)
|
||||
#define PROCMON_EN(x) (((x) & 0x1) << 16)
|
||||
#define PROCMON_SEL(x) (((x) & 0x3) << 24)
|
||||
#define PROCMON_NT_EN(x) (((x) & 0x1) << 28)
|
||||
|
||||
#define PROCMON_SEL_HFCLK 0
|
||||
#define PROCMON_SEL_HFXOSCIN 1
|
||||
#define PROCMON_SEL_PLLOUTDIV 2
|
||||
#define PROCMON_SEL_PROCMON 3
|
||||
|
||||
#endif // _SIFIVE_PRCI_H
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_PWM_H
|
||||
#define _SIFIVE_PWM_H
|
||||
|
||||
/* Register offsets */
|
||||
|
||||
#define PWM_CFG 0x00
|
||||
#define PWM_COUNT 0x08
|
||||
#define PWM_S 0x10
|
||||
#define PWM_CMP0 0x20
|
||||
#define PWM_CMP1 0x24
|
||||
#define PWM_CMP2 0x28
|
||||
#define PWM_CMP3 0x2C
|
||||
|
||||
/* Constants */
|
||||
|
||||
#define PWM_CFG_SCALE 0x0000000F
|
||||
#define PWM_CFG_STICKY 0x00000100
|
||||
#define PWM_CFG_ZEROCMP 0x00000200
|
||||
#define PWM_CFG_DEGLITCH 0x00000400
|
||||
#define PWM_CFG_ENALWAYS 0x00001000
|
||||
#define PWM_CFG_ONESHOT 0x00002000
|
||||
#define PWM_CFG_CMP0CENTER 0x00010000
|
||||
#define PWM_CFG_CMP1CENTER 0x00020000
|
||||
#define PWM_CFG_CMP2CENTER 0x00040000
|
||||
#define PWM_CFG_CMP3CENTER 0x00080000
|
||||
#define PWM_CFG_CMP0GANG 0x01000000
|
||||
#define PWM_CFG_CMP1GANG 0x02000000
|
||||
#define PWM_CFG_CMP2GANG 0x04000000
|
||||
#define PWM_CFG_CMP3GANG 0x08000000
|
||||
#define PWM_CFG_CMP0IP 0x10000000
|
||||
#define PWM_CFG_CMP1IP 0x20000000
|
||||
#define PWM_CFG_CMP2IP 0x40000000
|
||||
#define PWM_CFG_CMP3IP 0x80000000
|
||||
|
||||
#endif /* _SIFIVE_PWM_H */
|
||||
|
|
@ -0,0 +1,80 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_SPI_H
|
||||
#define _SIFIVE_SPI_H
|
||||
|
||||
/* Register offsets */
|
||||
|
||||
#define SPI_REG_SCKDIV 0x00
|
||||
#define SPI_REG_SCKMODE 0x04
|
||||
#define SPI_REG_CSID 0x10
|
||||
#define SPI_REG_CSDEF 0x14
|
||||
#define SPI_REG_CSMODE 0x18
|
||||
|
||||
#define SPI_REG_DCSSCK 0x28
|
||||
#define SPI_REG_DSCKCS 0x2a
|
||||
#define SPI_REG_DINTERCS 0x2c
|
||||
#define SPI_REG_DINTERXFR 0x2e
|
||||
|
||||
#define SPI_REG_FMT 0x40
|
||||
#define SPI_REG_TXFIFO 0x48
|
||||
#define SPI_REG_RXFIFO 0x4c
|
||||
#define SPI_REG_TXCTRL 0x50
|
||||
#define SPI_REG_RXCTRL 0x54
|
||||
|
||||
#define SPI_REG_FCTRL 0x60
|
||||
#define SPI_REG_FFMT 0x64
|
||||
|
||||
#define SPI_REG_IE 0x70
|
||||
#define SPI_REG_IP 0x74
|
||||
|
||||
/* Fields */
|
||||
|
||||
#define SPI_SCK_POL 0x1
|
||||
#define SPI_SCK_PHA 0x2
|
||||
|
||||
#define SPI_FMT_PROTO(x) ((x) & 0x3)
|
||||
#define SPI_FMT_ENDIAN(x) (((x) & 0x1) << 2)
|
||||
#define SPI_FMT_DIR(x) (((x) & 0x1) << 3)
|
||||
#define SPI_FMT_LEN(x) (((x) & 0xf) << 16)
|
||||
|
||||
/* TXCTRL register */
|
||||
#define SPI_TXWM(x) ((x) & 0xffff)
|
||||
/* RXCTRL register */
|
||||
#define SPI_RXWM(x) ((x) & 0xffff)
|
||||
|
||||
#define SPI_IP_TXWM 0x1
|
||||
#define SPI_IP_RXWM 0x2
|
||||
|
||||
#define SPI_FCTRL_EN 0x1
|
||||
|
||||
#define SPI_INSN_CMD_EN 0x1
|
||||
#define SPI_INSN_ADDR_LEN(x) (((x) & 0x7) << 1)
|
||||
#define SPI_INSN_PAD_CNT(x) (((x) & 0xf) << 4)
|
||||
#define SPI_INSN_CMD_PROTO(x) (((x) & 0x3) << 8)
|
||||
#define SPI_INSN_ADDR_PROTO(x) (((x) & 0x3) << 10)
|
||||
#define SPI_INSN_DATA_PROTO(x) (((x) & 0x3) << 12)
|
||||
#define SPI_INSN_CMD_CODE(x) (((x) & 0xff) << 16)
|
||||
#define SPI_INSN_PAD_CODE(x) (((x) & 0xff) << 24)
|
||||
|
||||
#define SPI_TXFIFO_FULL (1 << 31)
|
||||
#define SPI_RXFIFO_EMPTY (1 << 31)
|
||||
|
||||
/* Values */
|
||||
|
||||
#define SPI_CSMODE_AUTO 0
|
||||
#define SPI_CSMODE_HOLD 2
|
||||
#define SPI_CSMODE_OFF 3
|
||||
|
||||
#define SPI_DIR_RX 0
|
||||
#define SPI_DIR_TX 1
|
||||
|
||||
#define SPI_PROTO_S 0
|
||||
#define SPI_PROTO_D 1
|
||||
#define SPI_PROTO_Q 2
|
||||
|
||||
#define SPI_ENDIAN_MSB 0
|
||||
#define SPI_ENDIAN_LSB 1
|
||||
|
||||
|
||||
#endif /* _SIFIVE_SPI_H */
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
#ifndef _SIFIVE_UART_H
|
||||
#define _SIFIVE_UART_H
|
||||
|
||||
/* Register offsets */
|
||||
#define UART_REG_TXFIFO 0x00
|
||||
#define UART_REG_RXFIFO 0x04
|
||||
#define UART_REG_TXCTRL 0x08
|
||||
#define UART_REG_RXCTRL 0x0c
|
||||
#define UART_REG_IE 0x10
|
||||
#define UART_REG_IP 0x14
|
||||
#define UART_REG_DIV 0x18
|
||||
|
||||
/* TXCTRL register */
|
||||
#define UART_TXEN 0x1
|
||||
#define UART_TXWM(x) (((x) & 0xffff) << 16)
|
||||
|
||||
/* RXCTRL register */
|
||||
#define UART_RXEN 0x1
|
||||
#define UART_RXWM(x) (((x) & 0xffff) << 16)
|
||||
|
||||
/* IP register */
|
||||
#define UART_IP_TXWM 0x1
|
||||
#define UART_IP_RXWM 0x2
|
||||
|
||||
#endif /* _SIFIVE_UART_H */
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
// See LICENSE for license details.
|
||||
#ifndef _SECTIONS_H
|
||||
#define _SECTIONS_H
|
||||
|
||||
extern unsigned char _rom[];
|
||||
extern unsigned char _rom_end[];
|
||||
|
||||
extern unsigned char _ram[];
|
||||
extern unsigned char _ram_end[];
|
||||
|
||||
extern unsigned char _ftext[];
|
||||
extern unsigned char _etext[];
|
||||
extern unsigned char _fbss[];
|
||||
extern unsigned char _ebss[];
|
||||
extern unsigned char _end[];
|
||||
|
||||
#endif /* _SECTIONS_H */
|
||||
|
|
@ -0,0 +1,65 @@
|
|||
#ifndef SIFIVE_SMP
|
||||
#define SIFIVE_SMP
|
||||
|
||||
// The maximum number of HARTs this code supports
|
||||
#ifndef MAX_HARTS
|
||||
#define MAX_HARTS 32
|
||||
#endif
|
||||
#define CLINT_END_HART_IPI CLINT_CTRL_ADDR + (MAX_HARTS*4)
|
||||
|
||||
// The hart that non-SMP tests should run on
|
||||
#ifndef NONSMP_HART
|
||||
#define NONSMP_HART 0
|
||||
#endif
|
||||
|
||||
/* If your test cannot handle multiple-threads, use this:
|
||||
* smp_disable(reg1)
|
||||
*/
|
||||
#define smp_disable(reg1, reg2) \
|
||||
csrr reg1, mhartid ;\
|
||||
li reg2, NONSMP_HART ;\
|
||||
beq reg1, reg2, hart0_entry ;\
|
||||
42: ;\
|
||||
wfi ;\
|
||||
j 42b ;\
|
||||
hart0_entry:
|
||||
|
||||
/* If your test needs to temporarily block multiple-threads, do this:
|
||||
* smp_pause(reg1, reg2)
|
||||
* ... single-threaded work ...
|
||||
* smp_resume(reg1, reg2)
|
||||
* ... multi-threaded work ...
|
||||
*/
|
||||
|
||||
#define smp_pause(reg1, reg2) \
|
||||
li reg2, 0x8 ;\
|
||||
csrw mie, reg2 ;\
|
||||
csrr reg2, mhartid ;\
|
||||
bnez reg2, 42f
|
||||
|
||||
#define smp_resume(reg1, reg2) \
|
||||
li reg1, CLINT_CTRL_ADDR ;\
|
||||
41: ;\
|
||||
li reg2, 1 ;\
|
||||
sw reg2, 0(reg1) ;\
|
||||
addi reg1, reg1, 4 ;\
|
||||
li reg2, CLINT_END_HART_IPI ;\
|
||||
blt reg1, reg2, 41b ;\
|
||||
42: ;\
|
||||
wfi ;\
|
||||
csrr reg2, mip ;\
|
||||
andi reg2, reg2, 0x8 ;\
|
||||
beqz reg2, 42b ;\
|
||||
li reg1, CLINT_CTRL_ADDR ;\
|
||||
csrr reg2, mhartid ;\
|
||||
slli reg2, reg2, 2 ;\
|
||||
add reg2, reg2, reg1 ;\
|
||||
sw zero, 0(reg2) ;\
|
||||
41: ;\
|
||||
lw reg2, 0(reg1) ;\
|
||||
bnez reg2, 41b ;\
|
||||
addi reg1, reg1, 4 ;\
|
||||
li reg2, CLINT_END_HART_IPI ;\
|
||||
blt reg1, reg2, 41b
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,34 @@
|
|||
adapter_khz 10000
|
||||
|
||||
interface ftdi
|
||||
ftdi_device_desc "Dual RS232-HS"
|
||||
ftdi_vid_pid 0x0403 0x6010
|
||||
|
||||
ftdi_layout_init 0x0008 0x001b
|
||||
ftdi_layout_signal nSRST -oe 0x0020 -data 0x0020
|
||||
|
||||
#Reset Stretcher logic on FE310 is ~1 second long
|
||||
#This doesn't apply if you use
|
||||
# ftdi_set_signal, but still good to document
|
||||
#adapter_nsrst_delay 1500
|
||||
|
||||
set _CHIPNAME riscv
|
||||
jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x10e31913
|
||||
|
||||
set _TARGETNAME $_CHIPNAME.cpu
|
||||
target create $_TARGETNAME riscv -chain-position $_TARGETNAME
|
||||
$_TARGETNAME configure -work-area-phys 0x80000000 -work-area-size 10000 -work-area-backup 1
|
||||
|
||||
flash bank onboard_spi_flash fespi 0x20000000 0 0 0 $_TARGETNAME
|
||||
init
|
||||
#reset -- This type of reset is not implemented yet
|
||||
if {[ info exists pulse_srst]} {
|
||||
ftdi_set_signal nSRST 0
|
||||
ftdi_set_signal nSRST z
|
||||
#Wait for the reset stretcher
|
||||
#It will work without this, but
|
||||
#will incur lots of delays for later commands.
|
||||
sleep 1500
|
||||
}
|
||||
halt
|
||||
flash protect 0 64 last off
|
||||
|
|
@ -0,0 +1,5 @@
|
|||
#!/bin/bash
|
||||
|
||||
openocd -f openocd.cfg & riscv64-unknown-elf-gdb rtthread.elf --batch -ex "set remotetimeout 240" -ex "target extended-remote localhost:3333" -ex "monitor reset halt" -ex "monitor flash protect 0 64 last off" -ex "load" -ex "monitor resume" -ex "monitor shutdown" -ex "quit" && \
|
||||
echo "Successfully uploaded 'hello' to freedom-e300-hifive1."
|
||||
|
||||
|
|
@ -0,0 +1,138 @@
|
|||
#ifndef RT_CONFIG_H__
|
||||
#define RT_CONFIG_H__
|
||||
|
||||
/* Automatically generated file; DO NOT EDIT. */
|
||||
/* RT-Thread Configuration */
|
||||
|
||||
/* RT-Thread Kernel */
|
||||
|
||||
#define RT_NAME_MAX 32
|
||||
#define RT_ALIGN_SIZE 4
|
||||
#define RT_THREAD_PRIORITY_256
|
||||
#define RT_THREAD_PRIORITY_MAX 256
|
||||
#define RT_TICK_PER_SECOND 100
|
||||
#define RT_DEBUG
|
||||
#define RT_USING_OVERFLOW_CHECK
|
||||
#define RT_DEBUG_INIT 0
|
||||
#define RT_DEBUG_THREAD 0
|
||||
#define RT_USING_HOOK
|
||||
#define IDLE_THREAD_STACK_SIZE 1024
|
||||
|
||||
/* Inter-Thread communication */
|
||||
|
||||
#define RT_USING_SEMAPHORE
|
||||
#define RT_USING_MUTEX
|
||||
#define RT_USING_EVENT
|
||||
#define RT_USING_MAILBOX
|
||||
#define RT_USING_MESSAGEQUEUE
|
||||
|
||||
/* Memory Management */
|
||||
|
||||
#define RT_USING_MEMPOOL
|
||||
#define RT_USING_SMALL_MEM
|
||||
#define RT_USING_MEMTRACE
|
||||
#define RT_USING_HEAP
|
||||
|
||||
/* Kernel Device Object */
|
||||
|
||||
#define RT_USING_DEVICE
|
||||
#define RT_USING_CONSOLE
|
||||
#define RT_CONSOLEBUF_SIZE 128
|
||||
#define RT_CONSOLE_DEVICE_NAME "dusart"
|
||||
|
||||
/* RT-Thread Components */
|
||||
|
||||
#define RT_USING_COMPONENTS_INIT
|
||||
#define RT_USING_USER_MAIN
|
||||
#define RT_MAIN_THREAD_STACK_SIZE 2048
|
||||
|
||||
/* C++ features */
|
||||
|
||||
|
||||
/* Command shell */
|
||||
|
||||
#define RT_USING_FINSH
|
||||
#define FINSH_THREAD_NAME "tshell"
|
||||
#define FINSH_USING_HISTORY
|
||||
#define FINSH_HISTORY_LINES 5
|
||||
#define FINSH_USING_SYMTAB
|
||||
#define FINSH_USING_DESCRIPTION
|
||||
#define FINSH_THREAD_PRIORITY 20
|
||||
#define FINSH_THREAD_STACK_SIZE 4096
|
||||
#define FINSH_CMD_SIZE 80
|
||||
#define FINSH_USING_MSH
|
||||
#define FINSH_USING_MSH_DEFAULT
|
||||
#define FINSH_USING_MSH_ONLY
|
||||
|
||||
/* Device virtual file system */
|
||||
|
||||
|
||||
/* Device Drivers */
|
||||
|
||||
#define RT_USING_DEVICE_IPC
|
||||
#define RT_USING_SERIAL
|
||||
|
||||
/* Using USB */
|
||||
|
||||
|
||||
/* POSIX layer and C standard library */
|
||||
|
||||
#define RT_USING_LIBC
|
||||
|
||||
/* Network stack */
|
||||
|
||||
/* light weight TCP/IP stack */
|
||||
|
||||
|
||||
/* Modbus master and slave stack */
|
||||
|
||||
|
||||
/* VBUS(Virtual Software BUS) */
|
||||
|
||||
|
||||
/* Utilities */
|
||||
|
||||
|
||||
/* RT-Thread online packages */
|
||||
|
||||
/* system packages */
|
||||
|
||||
/* RT-Thread GUI Engine */
|
||||
|
||||
|
||||
/* IoT - internet of things */
|
||||
|
||||
|
||||
/* Wi-Fi */
|
||||
|
||||
/* Marvell WiFi */
|
||||
|
||||
|
||||
/* Wiced WiFi */
|
||||
|
||||
|
||||
/* security packages */
|
||||
|
||||
|
||||
/* language packages */
|
||||
|
||||
|
||||
/* multimedia packages */
|
||||
|
||||
|
||||
/* tools packages */
|
||||
|
||||
|
||||
/* miscellaneous packages */
|
||||
|
||||
|
||||
/* example package: hello */
|
||||
|
||||
|
||||
/* Privated Packages of RealThread */
|
||||
|
||||
|
||||
/* Network Utilities */
|
||||
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,60 @@
|
|||
import os
|
||||
ARCH = 'risc-v'
|
||||
CPU = 'e310'
|
||||
# toolchains options
|
||||
CROSS_TOOL = 'gcc'
|
||||
|
||||
#------- toolchains path -------------------------------------------------------
|
||||
if os.getenv('RTT_CC'):
|
||||
CROSS_TOOL = os.getenv('RTT_CC')
|
||||
|
||||
if CROSS_TOOL == 'gcc':
|
||||
PLATFORM = 'gcc'
|
||||
# EXEC_PATH = '/home/tanek/risc-v/e300/riscv64-unknown-elf-gcc-20170612-x86_64-linux-centos6/bin'
|
||||
EXEC_PATH = '/home/tanek/risc-v/e300/riscv64-unknown-elf-gcc-20171231-x86_64-linux-centos6/bin'
|
||||
|
||||
if os.getenv('RTT_EXEC_PATH'):
|
||||
EXEC_PATH = os.getenv('RTT_EXEC_PATH')
|
||||
|
||||
#BUILD = 'debug'
|
||||
BUILD = 'release'
|
||||
|
||||
CORE = 'risc-v'
|
||||
MAP_FILE = 'rtthread.map'
|
||||
LINK_FILE = './freedom-e-sdk/bsp/env/freedom-e300-hifive1/flash.lds'
|
||||
TARGET_NAME = 'rtthread.bin'
|
||||
|
||||
#------- GCC settings ----------------------------------------------------------
|
||||
if PLATFORM == 'gcc':
|
||||
# toolchains
|
||||
PREFIX = 'riscv64-unknown-elf-'
|
||||
CC = PREFIX + 'gcc'
|
||||
AS = PREFIX + 'gcc'
|
||||
AR = PREFIX + 'ar'
|
||||
LINK = PREFIX + 'gcc'
|
||||
TARGET_EXT = 'elf'
|
||||
SIZE = PREFIX + 'size'
|
||||
OBJDUMP = PREFIX + 'objdump'
|
||||
OBJCPY = PREFIX + 'objcopy'
|
||||
|
||||
DEVICE = ' -march=rv32imac -mabi=ilp32 -DUSE_PLIC -DUSE_M_TIME -DNO_INIT -mcmodel=medany -msmall-data-limit=8 -g -L. -nostartfiles -lc '
|
||||
CFLAGS = DEVICE
|
||||
CFLAGS += ' -save-temps=obj'
|
||||
AFLAGS = '-c'+ DEVICE + ' -x assembler-with-cpp'
|
||||
AFLAGS += ' -Iplatform -Ifreedom-e-sdk/bsp/include -Ifreedom-e-sdk/bsp/env'
|
||||
LFLAGS = DEVICE
|
||||
LFLAGS += ' -Wl,--gc-sections,-cref,-Map=' + MAP_FILE
|
||||
LFLAGS += ' -T ' + LINK_FILE
|
||||
LFLAGS += ' -Wl,-wrap=memset'
|
||||
|
||||
CPATH = ''
|
||||
LPATH = ''
|
||||
|
||||
if BUILD == 'debug':
|
||||
CFLAGS += ' -O0 -gdwarf-2'
|
||||
AFLAGS += ' -gdwarf-2'
|
||||
else:
|
||||
CFLAGS += ' -O2'
|
||||
|
||||
POST_ACTION = OBJCPY + ' -O binary $TARGET ' + TARGET_NAME + '\n'
|
||||
POST_ACTION += SIZE + ' $TARGET\n'
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
Import('rtconfig')
|
||||
from building import *
|
||||
|
||||
cwd = GetCurrentDir()
|
||||
src = Glob('*.c')
|
||||
CPPPATH = [cwd]
|
||||
|
||||
if rtconfig.PLATFORM == 'gcc':
|
||||
src += Glob('*_gcc.S')
|
||||
|
||||
group = DefineGroup('libcpu', src, depend = [''], CPPPATH = CPPPATH)
|
||||
|
||||
Return('group')
|
||||
|
|
@ -0,0 +1,227 @@
|
|||
;/*
|
||||
; * File : context_gcc.S
|
||||
; * This file is part of RT-Thread RTOS
|
||||
; * COPYRIGHT (C) 2018, RT-Thread Development Team
|
||||
; *
|
||||
; * This program is free software; you can redistribute it and/or modify
|
||||
; * it under the terms of the GNU General Public License as published by
|
||||
; * the Free Software Foundation; either version 2 of the License, or
|
||||
; * (at your option) any later version.
|
||||
; *
|
||||
; * This program is distributed in the hope that it will be useful,
|
||||
; * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
; * GNU General Public License for more details.
|
||||
; *
|
||||
; * You should have received a copy of the GNU General Public License along
|
||||
; * with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
; * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
; *
|
||||
; * Change Logs:
|
||||
; * Date Author Notes
|
||||
; * 2017-07-16 zhangjun for hifive1
|
||||
; * 2018-05-29 tanek optimize rt_hw_interrupt_*
|
||||
; * 2018-05-29 tanek add mie register to context
|
||||
; */
|
||||
|
||||
/*
|
||||
* rt_base_t rt_hw_interrupt_disable(void);
|
||||
*/
|
||||
.globl rt_hw_interrupt_disable
|
||||
rt_hw_interrupt_disable:
|
||||
csrrci a0, mstatus, 8
|
||||
ret
|
||||
|
||||
/*
|
||||
* void rt_hw_interrupt_enable(rt_base_t level);
|
||||
*/
|
||||
.globl rt_hw_interrupt_enable
|
||||
rt_hw_interrupt_enable:
|
||||
csrw mstatus, a0
|
||||
ret
|
||||
|
||||
/*
|
||||
* void rt_hw_context_switch(rt_uint32 from, rt_uint32 to);
|
||||
* a0 --> from
|
||||
* a1 --> to
|
||||
*/
|
||||
.globl rt_hw_context_switch
|
||||
rt_hw_context_switch:
|
||||
|
||||
/* saved from thread context
|
||||
* x1/ra -> sp(0)
|
||||
* x1/ra -> sp(1)
|
||||
* mstatus.mie -> sp(2)
|
||||
* x(i) -> sp(i-4)
|
||||
*/
|
||||
addi sp, sp, -32 * 4
|
||||
sw sp, (a0)
|
||||
|
||||
sw x1, 0 * 4(sp)
|
||||
sw x1, 1 * 4(sp)
|
||||
|
||||
csrr a0, mstatus
|
||||
andi a0, a0, 8
|
||||
beqz a0, save_mpie
|
||||
li a0, 0x80
|
||||
save_mpie:
|
||||
sw a0, 2 * 4(sp)
|
||||
|
||||
sw x4, 4 * 4(sp)
|
||||
sw x5, 5 * 4(sp)
|
||||
sw x6, 6 * 4(sp)
|
||||
sw x7, 7 * 4(sp)
|
||||
sw x8, 8 * 4(sp)
|
||||
sw x9, 9 * 4(sp)
|
||||
sw x10, 10 * 4(sp)
|
||||
sw x11, 11 * 4(sp)
|
||||
sw x12, 12 * 4(sp)
|
||||
sw x13, 13 * 4(sp)
|
||||
sw x14, 14 * 4(sp)
|
||||
sw x15, 15 * 4(sp)
|
||||
sw x16, 16 * 4(sp)
|
||||
sw x17, 17 * 4(sp)
|
||||
sw x18, 18 * 4(sp)
|
||||
sw x19, 19 * 4(sp)
|
||||
sw x20, 20 * 4(sp)
|
||||
sw x21, 21 * 4(sp)
|
||||
sw x22, 22 * 4(sp)
|
||||
sw x23, 23 * 4(sp)
|
||||
sw x24, 24 * 4(sp)
|
||||
sw x25, 25 * 4(sp)
|
||||
sw x26, 26 * 4(sp)
|
||||
sw x27, 27 * 4(sp)
|
||||
sw x28, 28 * 4(sp)
|
||||
sw x29, 29 * 4(sp)
|
||||
sw x30, 30 * 4(sp)
|
||||
sw x31, 31 * 4(sp)
|
||||
|
||||
/* restore to thread context
|
||||
* sp(0) -> epc;
|
||||
* sp(1) -> ra;
|
||||
* sp(i) -> x(i+2)
|
||||
*/
|
||||
lw sp, (a1)
|
||||
|
||||
/* resw ra to mepc */
|
||||
lw a1, 0 * 4(sp)
|
||||
csrw mepc, a1
|
||||
lw x1, 1 * 4(sp)
|
||||
|
||||
/* force to machin mode(MPP=11) */
|
||||
li a1, 0x00001800;
|
||||
csrs mstatus, a1
|
||||
lw a1, 2 * 4(sp)
|
||||
csrs mstatus, a1
|
||||
|
||||
lw x4, 4 * 4(sp)
|
||||
lw x5, 5 * 4(sp)
|
||||
lw x6, 6 * 4(sp)
|
||||
lw x7, 7 * 4(sp)
|
||||
lw x8, 8 * 4(sp)
|
||||
lw x9, 9 * 4(sp)
|
||||
lw x10, 10 * 4(sp)
|
||||
lw x11, 11 * 4(sp)
|
||||
lw x12, 12 * 4(sp)
|
||||
lw x13, 13 * 4(sp)
|
||||
lw x14, 14 * 4(sp)
|
||||
lw x15, 15 * 4(sp)
|
||||
lw x16, 16 * 4(sp)
|
||||
lw x17, 17 * 4(sp)
|
||||
lw x18, 18 * 4(sp)
|
||||
lw x19, 19 * 4(sp)
|
||||
lw x20, 20 * 4(sp)
|
||||
lw x21, 21 * 4(sp)
|
||||
lw x22, 22 * 4(sp)
|
||||
lw x23, 23 * 4(sp)
|
||||
lw x24, 24 * 4(sp)
|
||||
lw x25, 25 * 4(sp)
|
||||
lw x26, 26 * 4(sp)
|
||||
lw x27, 27 * 4(sp)
|
||||
lw x28, 28 * 4(sp)
|
||||
lw x29, 29 * 4(sp)
|
||||
lw x30, 30 * 4(sp)
|
||||
lw x31, 31 * 4(sp)
|
||||
|
||||
addi sp, sp, 32 * 4
|
||||
mret
|
||||
|
||||
/*
|
||||
* void rt_hw_context_switch_to(rt_uint32 to);
|
||||
* a0 --> to
|
||||
*/
|
||||
.globl rt_hw_context_switch_to
|
||||
rt_hw_context_switch_to:
|
||||
lw sp, (a0)
|
||||
|
||||
/* load epc from stack */
|
||||
lw a0, 0 * 4(sp)
|
||||
csrw mepc, a0
|
||||
lw x1, 1 * 4(sp)
|
||||
/* load mstatus from stack */
|
||||
lw a0, 2 * 4(sp)
|
||||
csrw mstatus, a0
|
||||
lw x4, 4 * 4(sp)
|
||||
lw x5, 5 * 4(sp)
|
||||
lw x6, 6 * 4(sp)
|
||||
lw x7, 7 * 4(sp)
|
||||
lw x8, 8 * 4(sp)
|
||||
lw x9, 9 * 4(sp)
|
||||
lw x10, 10 * 4(sp)
|
||||
lw x11, 11 * 4(sp)
|
||||
lw x12, 12 * 4(sp)
|
||||
lw x13, 13 * 4(sp)
|
||||
lw x14, 14 * 4(sp)
|
||||
lw x15, 15 * 4(sp)
|
||||
lw x16, 16 * 4(sp)
|
||||
lw x17, 17 * 4(sp)
|
||||
lw x18, 18 * 4(sp)
|
||||
lw x19, 19 * 4(sp)
|
||||
lw x20, 20 * 4(sp)
|
||||
lw x21, 21 * 4(sp)
|
||||
lw x22, 22 * 4(sp)
|
||||
lw x23, 23 * 4(sp)
|
||||
lw x24, 24 * 4(sp)
|
||||
lw x25, 25 * 4(sp)
|
||||
lw x26, 26 * 4(sp)
|
||||
lw x27, 27 * 4(sp)
|
||||
lw x28, 28 * 4(sp)
|
||||
lw x29, 29 * 4(sp)
|
||||
lw x30, 30 * 4(sp)
|
||||
lw x31, 31 * 4(sp)
|
||||
|
||||
addi sp, sp, 32 * 4
|
||||
mret
|
||||
|
||||
/*
|
||||
* void rt_hw_context_switch_interrupt(rt_uint32 from, rt_uint32 to);
|
||||
*/
|
||||
.globl rt_thread_switch_interrupt_flag
|
||||
.globl rt_interrupt_from_thread
|
||||
.globl rt_interrupt_to_thread
|
||||
.globl rt_hw_context_switch_interrupt
|
||||
rt_hw_context_switch_interrupt:
|
||||
addi sp, sp, -16
|
||||
sw s0, 12(sp)
|
||||
sw a0, 8(sp)
|
||||
sw a5, 4(sp)
|
||||
|
||||
la a0, rt_thread_switch_interrupt_flag
|
||||
lw a5, (a0)
|
||||
bnez a5, _reswitch
|
||||
li a5, 1
|
||||
sw a5, (a0)
|
||||
|
||||
la a5, rt_interrupt_from_thread
|
||||
lw a0, 8(sp)
|
||||
sw a0, (a5)
|
||||
|
||||
_reswitch:
|
||||
la a5, rt_interrupt_to_thread
|
||||
sw a1, (a5)
|
||||
|
||||
lw a5, 4(sp)
|
||||
lw a0, 8(sp)
|
||||
lw s0, 12(sp)
|
||||
addi sp, sp, 16
|
||||
ret
|
||||
|
|
@ -0,0 +1,145 @@
|
|||
/*
|
||||
* File : context_gcc.S
|
||||
* This file is part of RT-Thread RTOS
|
||||
* COPYRIGHT (C) 2018, RT-Thread Development Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Change Logs:
|
||||
* Date Author Notes
|
||||
* 2018-05-29 tanek first implementation
|
||||
*/
|
||||
|
||||
.section .text.entry
|
||||
.align 2
|
||||
.global trap_entry
|
||||
trap_entry:
|
||||
|
||||
// save all from thread context
|
||||
addi sp, sp, -32 * 4
|
||||
|
||||
sw x1, 1 * 4(sp)
|
||||
li t0, 0x80
|
||||
sw t0, 2 * 4(sp)
|
||||
|
||||
sw x4, 4 * 4(sp)
|
||||
sw x5, 5 * 4(sp)
|
||||
sw x6, 6 * 4(sp)
|
||||
sw x7, 7 * 4(sp)
|
||||
sw x8, 8 * 4(sp)
|
||||
sw x9, 9 * 4(sp)
|
||||
sw x10, 10 * 4(sp)
|
||||
sw x11, 11 * 4(sp)
|
||||
sw x12, 12 * 4(sp)
|
||||
sw x13, 13 * 4(sp)
|
||||
sw x14, 14 * 4(sp)
|
||||
sw x15, 15 * 4(sp)
|
||||
sw x16, 16 * 4(sp)
|
||||
sw x17, 17 * 4(sp)
|
||||
sw x18, 18 * 4(sp)
|
||||
sw x19, 19 * 4(sp)
|
||||
sw x20, 20 * 4(sp)
|
||||
sw x21, 21 * 4(sp)
|
||||
sw x22, 22 * 4(sp)
|
||||
sw x23, 23 * 4(sp)
|
||||
sw x24, 24 * 4(sp)
|
||||
sw x25, 25 * 4(sp)
|
||||
sw x26, 26 * 4(sp)
|
||||
sw x27, 27 * 4(sp)
|
||||
sw x28, 28 * 4(sp)
|
||||
sw x29, 29 * 4(sp)
|
||||
sw x30, 30 * 4(sp)
|
||||
sw x31, 31 * 4(sp)
|
||||
|
||||
// switch to interrupt stack
|
||||
move s0, sp
|
||||
la sp, _sp
|
||||
|
||||
// interrupt handle
|
||||
call rt_interrupt_enter
|
||||
csrr a0, mcause
|
||||
csrr a1, mepc
|
||||
mv a2, sp
|
||||
call handle_trap
|
||||
call rt_interrupt_leave
|
||||
|
||||
// switch to from thread stack
|
||||
move sp, s0
|
||||
|
||||
// need to switch new thread
|
||||
la s0, rt_thread_switch_interrupt_flag
|
||||
lw s2, 0(s0)
|
||||
beqz s2, spurious_interrupt
|
||||
sw zero, 0(s0)
|
||||
|
||||
csrr a0, mepc
|
||||
sw a0, 0 * 4(sp)
|
||||
|
||||
la s0, rt_interrupt_from_thread
|
||||
lw s1, 0(s0)
|
||||
sw sp, 0(s1)
|
||||
|
||||
la s0, rt_interrupt_to_thread
|
||||
lw s1, 0(s0)
|
||||
lw sp, 0(s1)
|
||||
|
||||
lw a0, 0 * 4(sp)
|
||||
csrw mepc, a0
|
||||
|
||||
spurious_interrupt:
|
||||
lw x1, 1 * 4(sp)
|
||||
|
||||
// Remain in M-mode after mret
|
||||
li t0, 0x00001800
|
||||
csrs mstatus, t0
|
||||
lw t0, 2 * 4(sp)
|
||||
csrs mstatus, t0
|
||||
|
||||
lw x4, 4 * 4(sp)
|
||||
lw x5, 5 * 4(sp)
|
||||
lw x6, 6 * 4(sp)
|
||||
lw x7, 7 * 4(sp)
|
||||
lw x8, 8 * 4(sp)
|
||||
lw x9, 9 * 4(sp)
|
||||
lw x10, 10 * 4(sp)
|
||||
lw x11, 11 * 4(sp)
|
||||
lw x12, 12 * 4(sp)
|
||||
lw x13, 13 * 4(sp)
|
||||
lw x14, 14 * 4(sp)
|
||||
lw x15, 15 * 4(sp)
|
||||
lw x16, 16 * 4(sp)
|
||||
lw x17, 17 * 4(sp)
|
||||
lw x18, 18 * 4(sp)
|
||||
lw x19, 19 * 4(sp)
|
||||
lw x20, 20 * 4(sp)
|
||||
lw x21, 21 * 4(sp)
|
||||
lw x22, 22 * 4(sp)
|
||||
lw x23, 23 * 4(sp)
|
||||
lw x24, 24 * 4(sp)
|
||||
lw x25, 25 * 4(sp)
|
||||
lw x26, 26 * 4(sp)
|
||||
lw x27, 27 * 4(sp)
|
||||
lw x28, 28 * 4(sp)
|
||||
lw x29, 29 * 4(sp)
|
||||
lw x30, 30 * 4(sp)
|
||||
lw x31, 31 * 4(sp)
|
||||
|
||||
addi sp, sp, 32 * 4
|
||||
mret
|
||||
|
||||
.weak handle_trap
|
||||
handle_trap:
|
||||
1:
|
||||
j 1b
|
||||
|
|
@ -0,0 +1,104 @@
|
|||
/*
|
||||
* File : stack.c
|
||||
* This file is part of RT-Thread RTOS
|
||||
* COPYRIGHT (C) 2006, RT-Thread Development Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Change Logs:
|
||||
* Date Author Notes
|
||||
* 2017-07-31 tanek first implementation
|
||||
*/
|
||||
|
||||
#include <rtthread.h>
|
||||
|
||||
/* flag in interrupt handling */
|
||||
rt_uint32_t rt_interrupt_from_thread;
|
||||
rt_uint32_t rt_interrupt_to_thread;
|
||||
rt_uint32_t rt_thread_switch_interrupt_flag;
|
||||
|
||||
struct stack_frame
|
||||
{
|
||||
rt_ubase_t epc; /* epc - epc - program counter */
|
||||
rt_ubase_t ra; /* x1 - ra - return address for jumps */
|
||||
rt_ubase_t mstatus; /* - machine status register */
|
||||
rt_ubase_t gp; /* x3 - gp - global pointer */
|
||||
rt_ubase_t tp; /* x4 - tp - thread pointer */
|
||||
rt_ubase_t t0; /* x5 - t0 - temporary register 0 */
|
||||
rt_ubase_t t1; /* x6 - t1 - temporary register 1 */
|
||||
rt_ubase_t t2; /* x7 - t2 - temporary register 2 */
|
||||
rt_ubase_t s0_fp; /* x8 - s0/fp - saved register 0 or frame pointer */
|
||||
rt_ubase_t s1; /* x9 - s1 - saved register 1 */
|
||||
rt_ubase_t a0; /* x10 - a0 - return value or function argument 0 */
|
||||
rt_ubase_t a1; /* x11 - a1 - return value or function argument 1 */
|
||||
rt_ubase_t a2; /* x12 - a2 - function argument 2 */
|
||||
rt_ubase_t a3; /* x13 - a3 - function argument 3 */
|
||||
rt_ubase_t a4; /* x14 - a4 - function argument 4 */
|
||||
rt_ubase_t a5; /* x15 - a5 - function argument 5 */
|
||||
rt_ubase_t a6; /* x16 - a6 - function argument 6 */
|
||||
rt_ubase_t a7; /* x17 - s7 - function argument 7 */
|
||||
rt_ubase_t s2; /* x18 - s2 - saved register 2 */
|
||||
rt_ubase_t s3; /* x19 - s3 - saved register 3 */
|
||||
rt_ubase_t s4; /* x20 - s4 - saved register 4 */
|
||||
rt_ubase_t s5; /* x21 - s5 - saved register 5 */
|
||||
rt_ubase_t s6; /* x22 - s6 - saved register 6 */
|
||||
rt_ubase_t s7; /* x23 - s7 - saved register 7 */
|
||||
rt_ubase_t s8; /* x24 - s8 - saved register 8 */
|
||||
rt_ubase_t s9; /* x25 - s9 - saved register 9 */
|
||||
rt_ubase_t s10; /* x26 - s10 - saved register 10 */
|
||||
rt_ubase_t s11; /* x27 - s11 - saved register 11 */
|
||||
rt_ubase_t t3; /* x28 - t3 - temporary register 3 */
|
||||
rt_ubase_t t4; /* x29 - t4 - temporary register 4 */
|
||||
rt_ubase_t t5; /* x30 - t5 - temporary register 5 */
|
||||
rt_ubase_t t6; /* x31 - t6 - temporary register 6 */
|
||||
};
|
||||
|
||||
/**
|
||||
* This function will initialize thread stack
|
||||
*
|
||||
* @param tentry the entry of thread
|
||||
* @param parameter the parameter of entry
|
||||
* @param stack_addr the beginning stack address
|
||||
* @param texit the function will be called when thread exit
|
||||
*
|
||||
* @return stack address
|
||||
*/
|
||||
rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
|
||||
rt_uint8_t *stack_addr, void *texit)
|
||||
{
|
||||
struct stack_frame *stack_frame;
|
||||
rt_uint8_t *stk;
|
||||
int i;
|
||||
|
||||
stk = stack_addr + sizeof(rt_uint32_t);
|
||||
stk = (rt_uint8_t *)RT_ALIGN_DOWN((rt_uint32_t)stk, 8);
|
||||
stk -= sizeof(struct stack_frame);
|
||||
|
||||
stack_frame = (struct stack_frame *)stk;
|
||||
|
||||
for (i = 0; i < sizeof(struct stack_frame) / sizeof(rt_ubase_t); i++)
|
||||
{
|
||||
((rt_ubase_t *)stack_frame)[i] = 0xdeadbeef;
|
||||
}
|
||||
|
||||
stack_frame->ra = (rt_ubase_t)texit;
|
||||
stack_frame->a0 = (rt_ubase_t)parameter;
|
||||
stack_frame->epc = (rt_ubase_t)tentry;
|
||||
|
||||
// force to machine mode(MPP=11) and set MPIE to 1
|
||||
stack_frame->mstatus = 0x00001880;
|
||||
|
||||
return stk;
|
||||
}
|
||||
Loading…
Reference in New Issue