QEMU support, and code optimization for thead extension

bsp/thead-smart/README.md

@@ -3,7 +3,7 @@ SMART-EVB is a development board provided by T-HEAD, based on FPGA to provide im
 
 ## The main resources on board are as follows:
 
-1. SMART-EVB for E906/E906F/E906FD
+1. SMART-EVB for T-Head CPU E9xx Series
 
 | res | description |
 | -- | -- |
@@ -25,15 +25,21 @@ SMART-EVB is a development board provided by T-HEAD, based on FPGA to provide im
 
 # Compile T-HEAD BSP
 SMART-EVB BSP supports GCC compiler, the version information is:
-
+1. SMART-EVB for E906/7/F/D/P
-1. SMART-EVB for E906/E906F/E906FD
 
 | IDE/Compiler| version|
 | - | - |
 | GCC | gcc version 8.4.0 (C-SKY RISCV Tools V1.9.6 B20200616) |
+2. select cpu in rtconfig.py
+3. scons -c; scons
 
-# run smart-evb bsp
+# Quick start with qemu
+1. download qemu
+wget https://occ-oss-prod.oss-cn-hangzhou.aliyuncs.com/resource/1356021/1612269502091/csky-qemu-x86_64-Ubuntu-16.04-20210202-1445.tar.gz
+2. qemu run
+qemu-system-riscv32 -cpu e906fdp -M smartl -kernel rtthread-e9xx.elf -nographic
 
+# Quick start with smart-evb
 1. Connect JTAG
 2. Connect the serial port
 3. riscv64-unknown-elf-gdb rtthread-e906f.elf

bsp/thead-smart/drivers/board.c

@@ -23,7 +23,7 @@ extern int __bss_end__;
 
 extern usart_handle_t console_handle;
 extern void ioreuse_initial(void);
-
+extern int rt_hw_usart_init(void);
 
 /**
  * This function will initial smart-evb board.

bsp/thead-smart/drivers/csi_config.h

@@ -13,12 +13,7 @@
 #ifndef __CSI_CONFIG_H
 #define __CSI_CONFIG_H
 
-#define CONFIG_ARCH_RV32 1
+#define CONFIG_BOARD_NAME_STR "smart_e906_evb"
-#define CONFIG_CPU_E906FD 1
-#define CONFIG_RV32_CORETIM 1
-#define CONFIG_CHIP_SMARTL_RV32 1
-#define CONFIG_BOARD_SMARTL_E906_EVB 1
-#define CONFIG_BOARD_NAME_STR "smartl_e906_evb"
 #define CONFIG_SUPPORT_TSPEND 1
 #define CONFIG_ARCH_INTERRUPTSTACK 4096
 #define CONFIG_NEWLIB_WRAP 1

bsp/thead-smart/drivers/system.c

@@ -65,7 +65,10 @@ void systemmap_config(void)
 void SystemInit(void)
 {
     int i;
+#if ((CONFIG_CPU_E902 != 1) && (CONFIG_CPU_E902M != 1))
     systemmap_config();
+#endif
+
     /* enable mstatus FS */
 #if (__riscv_flen)
     uint32_t mstatus = __get_MSTATUS();

bsp/thead-smart/gdbinit

@@ -6,6 +6,9 @@ set *(int *)0x40011008=0x0
 set *(int *)0x4001101c=0x0
 set disassemble-next-line on
 show disassemble-next-line
+
+hb Default_Handler
 lo
+c
 
 

bsp/thead-smart/rtconfig.h

@@ -38,20 +38,6 @@
 #define RT_CONSOLEBUF_SIZE 128
 #define RT_CONSOLE_DEVICE_NAME "uart1"
 #define RT_VER_NUM 0x40003
-#define ARCH_RISCV
-#define ARCH_RISCV32
-#if(__riscv_flen == 64)
-#define ARCH_RISCV_FPU
-#define ARCH_RISCV_FPU_D
-#elif(__riscv_flen == 32)
-#define ARCH_RISCV_FPU
-#define ARCH_RISCV_FPU_S
-#else
-#endif
-#ifdef __riscv_zp64
-#define ARCH_RISCV_DSP
-#endif
-
 
 /* RT-Thread Components */
 

bsp/thead-smart/rtconfig.py

@@ -67,11 +67,5 @@ if PLATFORM == 'gcc':
 
     CXXFLAGS = CFLAGS
 
-#    M_CFLAGS = DEVICE + ' -EL -G0 -O2 -mno-abicalls -fno-common -fno-exceptions -fno-omit-frame-pointer -mlong-calls -fno-pic '
- #   M_CXXFLAGS = M_CFLAGS
- #   M_LFLAGS = DEVICE + ' -EL -r -Wl,--gc-sections,-z,max-page-size=0x4' +\
-  #                                  ' -nostartfiles -static-libgcc'
- #   M_POST_ACTION = STRIP + ' -R .hash $TARGET\n' + SIZE + ' $TARGET \n'
-
 DUMP_ACTION = OBJDUMP + ' -D -S $TARGET > rtt.asm\n'
 POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'

bsp/thead-smart/theadconfig.h

@@ -0,0 +1,24 @@
+#ifndef THEAD_CONFIG_H__
+#define THAED_CONFIG_H__
+
+#define ARCH_RISCV
+#define ARCH_RISCV32
+#if(__riscv_flen == 64)
+#define ARCH_RISCV_FPU
+#define ARCH_RISCV_FPU_D
+#elif(__riscv_flen == 32)
+#define ARCH_RISCV_FPU
+#define ARCH_RISCV_FPU_S
+#else
+#endif
+#ifdef __riscv_zp64
+#define ARCH_RISCV_DSP
+#endif
+
+#ifdef __riscv_xthead
+#ifdef __riscv_xtheade
+#define CONFIG_THEAD_EXT_SPUSHEN
+#endif
+#endif
+
+#endif

libcpu/risc-v/t-head/e9xx/context_gcc.S

@@ -1,11 +1,13 @@
 /*
  * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2021, Alibaba Group Holding Limited
  *
  * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
  * 2020/08/20     zx.chen      The T-HEAD RISC-V CPU E906 porting implementation
+ * 2021/08/13     zx.chen      update T-HEAD E9xx-series(E906/7/F/D/P) CPU porting code.
  */
 
 #include "cpuport.h"
@@ -29,8 +31,6 @@ vPortYield:
 
     ret
 
-
-
 /*
  * #ifdef RT_USING_SMP
  * void rt_hw_context_switch_to(rt_ubase_t to, stuct rt_thread *to_thread);
@@ -56,12 +56,10 @@ rt_hw_context_switch_to:
     li      t1, 1
     STORE   t1, (t0)
 
-    /* enable mexstatus SPUSHEN and SPSWAPEN */
+    /* enable mexstatus SPUSHEN */
-#if ((CONFIG_CPU_E906==1) || (CONFIG_CPU_E906F==1) || (CONFIG_CPU_E906FD==1))
+#ifdef CONFIG_THEAD_EXT_SPUSHEN
-    uint32_t mexstatus;
+    li      t0, 0x10000
-    mexstatus  = __get_MEXSTATUS();
+    csrs    mexstatus, t0
-    mexstatus |= (0x2 << 16);
-    __set_MEXSTATUS(mexstatus);
 #endif
 
     csrw    mscratch, sp
@@ -140,7 +138,7 @@ PendSV_Handler:
     lw      t1, (t0)
     beqz    t1, .switch_to_thead
     
-    /* save from thread context */
+    /* restore from thread context t0,t1 */
     lw      t0, (-4)(sp)
     lw      t1, (-8)(sp)
 
@@ -191,10 +189,6 @@ PendSV_Handler:
     csrr    x1, mepc
     STORE   x1, 0 * REGBYTES(sp)
     csrr    x1, mstatus
-    andi    x1, x1, 8
-    beqz    x1, .save_mpie
-    li      x1, 0x80
-.save_mpie:
     STORE   x1, 2 * REGBYTES(sp)
     /* x3 don't need save */
     STORE   x4, 4 * REGBYTES(sp)
@@ -256,11 +250,9 @@ PendSV_Handler:
     csrw    mepc, a1
     LOAD    x1, 1 * REGBYTES(sp)
 
-    /* force to machin mode(MPP=11) */
+    /* force to machine mode(MPP=11) */
-    li      a1, 0x1880
-    csrs    mstatus, a1
     LOAD    a1, 2 * REGBYTES(sp)
-    csrs    mstatus, a1
+    csrw    mstatus, a1
     /* x3 don't need restore */
     LOAD    x4, 4 * REGBYTES(sp)
     LOAD    x5, 5 * REGBYTES(sp)

libcpu/risc-v/t-head/e9xx/cpuport.c

@@ -1,11 +1,13 @@
 /*
  * Copyright (c) 2006-2021, RT-Thread Development Team
+ * Copyright (c) 2021, Alibaba Group Holding Limited
  *
  * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
  * 2020/08/20     zx.chen      The T-HEAD RISC-V CPU E906 porting code.
+ * 2021/08/13     zx.chen      update T-HEAD E9xx-series(E906/7/F/D/P) CPU porting code.
  */
 
 #include <rthw.h>
@@ -143,8 +145,8 @@ rt_uint8_t *rt_hw_stack_init(void       *tentry,
 
 rt_base_t rt_hw_interrupt_disable(void)
 {
-    __asm volatile("csrc mstatus, 8");
+    __asm volatile("csrrci a0, mstatus, 8");
-    return 0;
+    return;
 }
 
 /**
@@ -154,9 +156,10 @@ rt_base_t rt_hw_interrupt_disable(void)
  *
  * @return none
  */
+/* XXX:rename rt_hw_interrupt_restore? */
 void rt_hw_interrupt_enable(rt_base_t level)
 {
-    __asm volatile("csrs mstatus, 8");
+    __asm volatile("csrw mstatus, a0");
 }
 
 /** shutdown CPU */

libcpu/risc-v/t-head/e9xx/cpuport.h

@@ -12,6 +12,7 @@
 #define CPUPORT_H__
 
 #include <rtconfig.h>
+#include <theadconfig.h>
 
 /* bytes of register width  */
 #ifdef ARCH_RISCV_64