diff --git a/libcpu/SConscript b/libcpu/SConscript new file mode 100644 index 0000000000..1ea8ff784c --- /dev/null +++ b/libcpu/SConscript @@ -0,0 +1,15 @@ +Import('env') +Import('rtconfig') + +comm = rtconfig.ARCH + '/common' +path = rtconfig.ARCH + '/' + rtconfig.CPU + +# The set of source files associated with this SConscript file. +if rtconfig.CC == 'armcc': + src_local = Glob(path + '/*.c') + Glob(path + '/*_rvds.s') + Glob(comm + '/*.c') + +if rtconfig.CC == 'gcc': + src_local = Glob(path + '/*.c') + Glob(path + '/*_gcc.s') + Glob(comm + '/*.c') + +obj = env.Object(src_local) +Return('obj') diff --git a/libcpu/arm/stm32/context_gcc.S b/libcpu/arm/stm32/context_gcc.S new file mode 100644 index 0000000000..8d4271ecfe --- /dev/null +++ b/libcpu/arm/stm32/context_gcc.S @@ -0,0 +1,147 @@ +/* + * File : context_gcc.S + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rt-thread.org/license/LICENSE + * + * Change Logs: + * Date Author Notes + * 2009-10-11 Bernard first version + */ + +/** + * @addtogroup STM32 + */ +/*@{*/ + +.cpu cortex-m3 +.fpu softvfp +.syntax unified +.thumb +.text + +.equ NVIC_INT_CTRL, 0xE000ED04 /* interrupt control state register */ +.equ NVIC_SYSPRI2, 0xE000ED20 /* system priority register (2) */ +.equ NVIC_PENDSV_PRI, 0x00FF0000 /* PendSV priority value (lowest) */ +.equ NVIC_PENDSVSET, 0x10000000 /* value to trigger PendSV exception */ + +/* + * rt_base_t rt_hw_interrupt_disable(); + */ +.global rt_hw_interrupt_disable +rt_hw_interrupt_disable: + MRS r0, PRIMASK + CPSID I + BX LR + +/* + * void rt_hw_interrupt_enable(rt_base_t level); + */ +.global rt_hw_interrupt_enable +rt_hw_interrupt_enable: + MSR PRIMASK, r0 + BX LR + +/* + * void rt_hw_context_switch(rt_uint32 from, rt_uint32 to); + * r0 --> from + * r1 --> to + */ +.global rt_hw_context_switch_interrupt +.global rt_hw_context_switch + +rt_hw_context_switch_interrupt: +rt_hw_context_switch: + /* set rt_thread_switch_interrput_flag to 1 */ + LDR r2, =rt_thread_switch_interrput_flag + LDR r3, [r2] + CMP r3, #1 + BEQ _reswitch + MOV r3, #1 + STR r3, [r2] + + LDR r2, =rt_interrupt_from_thread /* set rt_interrupt_from_thread */ + STR r0, [r2] + +_reswitch: + LDR r2, =rt_interrupt_to_thread /* set rt_interrupt_to_thread */ + STR r1, [r2] + + LDR r0, =NVIC_INT_CTRL /* trigger the PendSV exception (causes context switch) */ + LDR r1, =NVIC_PENDSVSET + STR r1, [r0] + BX LR + +/* r0 --> swith from thread stack + * r1 --> swith to thread stack + * psr, pc, lr, r12, r3, r2, r1, r0 are pushed into [from] stack + */ +.global rt_hw_pend_sv +rt_hw_pend_sv: + /* disable interrupt to protect context switch */ + MRS r2, PRIMASK + CPSID I + + /* clear rt_thread_switch_interrput_flag to 0 */ + LDR r0, =rt_thread_switch_interrput_flag + MOV r1, #0x00 + STR r1, [r0] + + LDR r0, =rt_interrupt_from_thread + LDR r1, [r0] + CBZ r1, swtich_to_thread /* skip register save at the first time */ + + MRS r1, psp /* get from thread stack pointer */ + STMFD r1!, {r4 - r11} /* push r4 - r11 register */ + LDR r0, [r0] + STR r1, [r0] /* update from thread stack pointer */ + +swtich_to_thread: + LDR r1, =rt_interrupt_to_thread + LDR r1, [r1] + LDR r1, [r1] /* load thread stack pointer */ + + LDMFD r1!, {r4 - r11} /* pop r4 - r11 register */ + MSR psp, r1 /* update stack pointer */ + + /* restore interrupt */ + MSR PRIMASK, r2 + + ORR lr, lr, #0x04 + BX lr + +/* + * void rt_hw_context_switch_to(rt_uint32 to); + * r0 --> to + */ +.global rt_hw_context_switch_to +rt_hw_context_switch_to: + LDR r1, =rt_interrupt_to_thread + STR r0, [r1] + + /* set from thread to 0 */ + LDR r1, =rt_interrupt_from_thread + MOV r0, #0x0 + STR r0, [r1] + + /* set the PendSV exception priority */ + LDR r0, =NVIC_SYSPRI2 + LDR r1, =NVIC_PENDSV_PRI + STR r1, [r0] + + LDR r0, =NVIC_INT_CTRL /* trigger the PendSV exception (causes context switch) */ + LDR r1, =NVIC_PENDSVSET + STR r1, [r0] + + CPSIE I /* enable interrupts at processor level */ + + /* never reach here! */ + +/* compatible with old version */ +.global rt_hw_interrupt_thread_switch +rt_hw_interrupt_thread_switch: + BX lr + NOP diff --git a/libcpu/arm/stm32/fault_gcc.S b/libcpu/arm/stm32/fault_gcc.S new file mode 100644 index 0000000000..6aae535043 --- /dev/null +++ b/libcpu/arm/stm32/fault_gcc.S @@ -0,0 +1,30 @@ +/* + * File : fault_gcc.S + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rt-thread.org/license/LICENSE + * + * Change Logs: + * Date Author Notes + * 2009-10-11 Bernard first version + */ + +.cpu cortex-m3 +.fpu softvfp +.syntax unified +.thumb +.text + +.global rt_hw_hard_fault +rt_hw_hard_fault: + /* get current context */ + MRS r0, psp /* get fault thread stack pointer */ + PUSH {lr} + BL rt_hw_hard_fault_exception + POP {lr} + + ORR lr, lr, #0x04 + BX lr diff --git a/libcpu/arm/stm32/start_gcc.s b/libcpu/arm/stm32/start_gcc.s new file mode 100644 index 0000000000..78c10c3c49 --- /dev/null +++ b/libcpu/arm/stm32/start_gcc.s @@ -0,0 +1,483 @@ +/** + ****************************************************************************** + * @file startup_stm32f10x_hd.s + * @author MCD Application Team + * @version V3.1.2 + * @date 09/28/2009 + * @brief STM32F10x High Density Devices vector table for RIDE7 toolchain. + * This module performs: + * - Set the initial SP + * - Set the initial PC == Reset_Handler, + * - Set the vector table entries with the exceptions ISR address, + * - Configure external SRAM mounted on STM3210E-EVAL board + * to be used as data memory (optional, to be enabled by user) + * - Branches to main in the C library (which eventually + * calls main()). + * After Reset the Cortex-M3 processor is in Thread mode, + * priority is Privileged, and the Stack is set to Main. + ****************************************************************************** + * @copy + * + * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS + * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE + * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY + * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING + * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE + * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. + * + *

© COPYRIGHT 2009 STMicroelectronics

+ */ + + .syntax unified + .cpu cortex-m3 + .fpu softvfp + .thumb + +.global g_pfnVectors +.global SystemInit_ExtMemCtl_Dummy +.global Default_Handler + +/* start address for the initialization values of the .data section. +defined in linker script */ +.word _sidata +/* start address for the .data section. defined in linker script */ +.word _sdata +/* end address for the .data section. defined in linker script */ +.word _edata +/* start address for the .bss section. defined in linker script */ +.word _sbss +/* end address for the .bss section. defined in linker script */ +.word _ebss +/* stack used for SystemInit_ExtMemCtl; always internal RAM used */ + +.equ Initial_spTop, 0x20000400 +.equ BootRAM, 0xF1E0F85F +/** + * @brief This is the code that gets called when the processor first + * starts execution following a reset event. Only the absolutely + * necessary set is performed, after which the application + * supplied main() routine is called. + * @param None + * @retval : None +*/ + + .section .text.Reset_Handler + .weak Reset_Handler + .type Reset_Handler, %function +Reset_Handler: + +/* FSMC Bank1 NOR/SRAM3 is used for the STM3210E-EVAL, if another Bank is + required, then adjust the Register Addresses */ + bl SystemInit_ExtMemCtl +/* restore original stack pointer */ + LDR r0, =_estack + MSR msp, r0 +/* Copy the data segment initializers from flash to SRAM */ + movs r1, #0 + b LoopCopyDataInit + +CopyDataInit: + ldr r3, =_sidata + ldr r3, [r3, r1] + str r3, [r0, r1] + adds r1, r1, #4 + +LoopCopyDataInit: + ldr r0, =_sdata + ldr r3, =_edata + adds r2, r0, r1 + cmp r2, r3 + bcc CopyDataInit + ldr r2, =_sbss + b LoopFillZerobss +/* Zero fill the bss segment. */ +FillZerobss: + movs r3, #0 + str r3, [r2], #4 + +LoopFillZerobss: + ldr r3, = _ebss + cmp r2, r3 + bcc FillZerobss +/* Call the application's entry point.*/ + bl main + bx lr +.size Reset_Handler, .-Reset_Handler + +/** + * @brief Dummy SystemInit_ExtMemCtl function + * @param None + * @retval : None +*/ + .section .text.SystemInit_ExtMemCtl_Dummy,"ax",%progbits +SystemInit_ExtMemCtl_Dummy: + bx lr + .size SystemInit_ExtMemCtl_Dummy, .-SystemInit_ExtMemCtl_Dummy + +/** + * @brief This is the code that gets called when the processor receives an + * unexpected interrupt. This simply enters an infinite loop, preserving + * the system state for examination by a debugger. + * + * @param None + * @retval : None +*/ + .section .text.Default_Handler,"ax",%progbits +Default_Handler: +Infinite_Loop: + b Infinite_Loop + .size Default_Handler, .-Default_Handler +/****************************************************************************** +* +* The minimal vector table for a Cortex M3. Note that the proper constructs +* must be placed on this to ensure that it ends up at physical address +* 0x0000.0000. +* +******************************************************************************/ + .section .isr_vector,"a",%progbits + .type g_pfnVectors, %object + .size g_pfnVectors, .-g_pfnVectors + + +g_pfnVectors: + .word Initial_spTop + .word Reset_Handler + .word NMI_Handler + .word HardFault_Handler + .word MemManage_Handler + .word BusFault_Handler + .word UsageFault_Handler + .word 0 + .word 0 + .word 0 + .word 0 + .word SVC_Handler + .word DebugMon_Handler + .word 0 + .word PendSV_Handler + .word SysTick_Handler + .word WWDG_IRQHandler + .word PVD_IRQHandler + .word TAMPER_IRQHandler + .word RTC_IRQHandler + .word FLASH_IRQHandler + .word RCC_IRQHandler + .word EXTI0_IRQHandler + .word EXTI1_IRQHandler + .word EXTI2_IRQHandler + .word EXTI3_IRQHandler + .word EXTI4_IRQHandler + .word DMA1_Channel1_IRQHandler + .word DMA1_Channel2_IRQHandler + .word DMA1_Channel3_IRQHandler + .word DMA1_Channel4_IRQHandler + .word DMA1_Channel5_IRQHandler + .word DMA1_Channel6_IRQHandler + .word DMA1_Channel7_IRQHandler + .word ADC1_2_IRQHandler + .word USB_HP_CAN1_TX_IRQHandler + .word USB_LP_CAN1_RX0_IRQHandler + .word CAN1_RX1_IRQHandler + .word CAN1_SCE_IRQHandler + .word EXTI9_5_IRQHandler + .word TIM1_BRK_IRQHandler + .word TIM1_UP_IRQHandler + .word TIM1_TRG_COM_IRQHandler + .word TIM1_CC_IRQHandler + .word TIM2_IRQHandler + .word TIM3_IRQHandler + .word TIM4_IRQHandler + .word I2C1_EV_IRQHandler + .word I2C1_ER_IRQHandler + .word I2C2_EV_IRQHandler + .word I2C2_ER_IRQHandler + .word SPI1_IRQHandler + .word SPI2_IRQHandler + .word USART1_IRQHandler + .word USART2_IRQHandler + .word USART3_IRQHandler + .word EXTI15_10_IRQHandler + .word RTCAlarm_IRQHandler + .word USBWakeUp_IRQHandler + .word TIM8_BRK_IRQHandler + .word TIM8_UP_IRQHandler + .word TIM8_TRG_COM_IRQHandler + .word TIM8_CC_IRQHandler + .word ADC3_IRQHandler + .word FSMC_IRQHandler + .word SDIO_IRQHandler + .word TIM5_IRQHandler + .word SPI3_IRQHandler + .word UART4_IRQHandler + .word UART5_IRQHandler + .word TIM6_IRQHandler + .word TIM7_IRQHandler + .word DMA2_Channel1_IRQHandler + .word DMA2_Channel2_IRQHandler + .word DMA2_Channel3_IRQHandler + .word DMA2_Channel4_5_IRQHandler + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word 0 + .word BootRAM /* @0x1E0. This is for boot in RAM mode for + STM32F10x High Density devices. */ + +/******************************************************************************* +* +* Provide weak aliases for each Exception handler to the Default_Handler. +* As they are weak aliases, any function with the same name will override +* this definition. +* +*******************************************************************************/ + + .weak NMI_Handler + .thumb_set NMI_Handler,Default_Handler + + .weak HardFault_Handler + .thumb_set HardFault_Handler,Default_Handler + + .weak MemManage_Handler + .thumb_set MemManage_Handler,Default_Handler + + .weak BusFault_Handler + .thumb_set BusFault_Handler,Default_Handler + + .weak UsageFault_Handler + .thumb_set UsageFault_Handler,Default_Handler + + .weak SVC_Handler + .thumb_set SVC_Handler,Default_Handler + + .weak DebugMon_Handler + .thumb_set DebugMon_Handler,Default_Handler + + .weak PendSV_Handler + .thumb_set PendSV_Handler,Default_Handler + + .weak SysTick_Handler + .thumb_set SysTick_Handler,Default_Handler + + .weak WWDG_IRQHandler + .thumb_set WWDG_IRQHandler,Default_Handler + + .weak PVD_IRQHandler + .thumb_set PVD_IRQHandler,Default_Handler + + .weak TAMPER_IRQHandler + .thumb_set TAMPER_IRQHandler,Default_Handler + + .weak RTC_IRQHandler + .thumb_set RTC_IRQHandler,Default_Handler + + .weak FLASH_IRQHandler + .thumb_set FLASH_IRQHandler,Default_Handler + + .weak RCC_IRQHandler + .thumb_set RCC_IRQHandler,Default_Handler + + .weak EXTI0_IRQHandler + .thumb_set EXTI0_IRQHandler,Default_Handler + + .weak EXTI1_IRQHandler + .thumb_set EXTI1_IRQHandler,Default_Handler + + .weak EXTI2_IRQHandler + .thumb_set EXTI2_IRQHandler,Default_Handler + + .weak EXTI3_IRQHandler + .thumb_set EXTI3_IRQHandler,Default_Handler + + .weak EXTI4_IRQHandler + .thumb_set EXTI4_IRQHandler,Default_Handler + + .weak DMA1_Channel1_IRQHandler + .thumb_set DMA1_Channel1_IRQHandler,Default_Handler + + .weak DMA1_Channel2_IRQHandler + .thumb_set DMA1_Channel2_IRQHandler,Default_Handler + + .weak DMA1_Channel3_IRQHandler + .thumb_set DMA1_Channel3_IRQHandler,Default_Handler + + .weak DMA1_Channel4_IRQHandler + .thumb_set DMA1_Channel4_IRQHandler,Default_Handler + + .weak DMA1_Channel5_IRQHandler + .thumb_set DMA1_Channel5_IRQHandler,Default_Handler + + .weak DMA1_Channel6_IRQHandler + .thumb_set DMA1_Channel6_IRQHandler,Default_Handler + + .weak DMA1_Channel7_IRQHandler + .thumb_set DMA1_Channel7_IRQHandler,Default_Handler + + .weak ADC1_2_IRQHandler + .thumb_set ADC1_2_IRQHandler,Default_Handler + + .weak USB_HP_CAN1_TX_IRQHandler + .thumb_set USB_HP_CAN1_TX_IRQHandler,Default_Handler + + .weak USB_LP_CAN1_RX0_IRQHandler + .thumb_set USB_LP_CAN1_RX0_IRQHandler,Default_Handler + + .weak CAN1_RX1_IRQHandler + .thumb_set CAN1_RX1_IRQHandler,Default_Handler + + .weak CAN1_SCE_IRQHandler + .thumb_set CAN1_SCE_IRQHandler,Default_Handler + + .weak EXTI9_5_IRQHandler + .thumb_set EXTI9_5_IRQHandler,Default_Handler + + .weak TIM1_BRK_IRQHandler + .thumb_set TIM1_BRK_IRQHandler,Default_Handler + + .weak TIM1_UP_IRQHandler + .thumb_set TIM1_UP_IRQHandler,Default_Handler + + .weak TIM1_TRG_COM_IRQHandler + .thumb_set TIM1_TRG_COM_IRQHandler,Default_Handler + + .weak TIM1_CC_IRQHandler + .thumb_set TIM1_CC_IRQHandler,Default_Handler + + .weak TIM2_IRQHandler + .thumb_set TIM2_IRQHandler,Default_Handler + + .weak TIM3_IRQHandler + .thumb_set TIM3_IRQHandler,Default_Handler + + .weak TIM4_IRQHandler + .thumb_set TIM4_IRQHandler,Default_Handler + + .weak I2C1_EV_IRQHandler + .thumb_set I2C1_EV_IRQHandler,Default_Handler + + .weak I2C1_ER_IRQHandler + .thumb_set I2C1_ER_IRQHandler,Default_Handler + + .weak I2C2_EV_IRQHandler + .thumb_set I2C2_EV_IRQHandler,Default_Handler + + .weak I2C2_ER_IRQHandler + .thumb_set I2C2_ER_IRQHandler,Default_Handler + + .weak SPI1_IRQHandler + .thumb_set SPI1_IRQHandler,Default_Handler + + .weak SPI2_IRQHandler + .thumb_set SPI2_IRQHandler,Default_Handler + + .weak USART1_IRQHandler + .thumb_set USART1_IRQHandler,Default_Handler + + .weak USART2_IRQHandler + .thumb_set USART2_IRQHandler,Default_Handler + + .weak USART3_IRQHandler + .thumb_set USART3_IRQHandler,Default_Handler + + .weak EXTI15_10_IRQHandler + .thumb_set EXTI15_10_IRQHandler,Default_Handler + + .weak RTCAlarm_IRQHandler + .thumb_set RTCAlarm_IRQHandler,Default_Handler + + .weak USBWakeUp_IRQHandler + .thumb_set USBWakeUp_IRQHandler,Default_Handler + + .weak TIM8_BRK_IRQHandler + .thumb_set TIM8_BRK_IRQHandler,Default_Handler + + .weak TIM8_UP_IRQHandler + .thumb_set TIM8_UP_IRQHandler,Default_Handler + + .weak TIM8_TRG_COM_IRQHandler + .thumb_set TIM8_TRG_COM_IRQHandler,Default_Handler + + .weak TIM8_CC_IRQHandler + .thumb_set TIM8_CC_IRQHandler,Default_Handler + + .weak ADC3_IRQHandler + .thumb_set ADC3_IRQHandler,Default_Handler + + .weak FSMC_IRQHandler + .thumb_set FSMC_IRQHandler,Default_Handler + + .weak SDIO_IRQHandler + .thumb_set SDIO_IRQHandler,Default_Handler + + .weak TIM5_IRQHandler + .thumb_set TIM5_IRQHandler,Default_Handler + + .weak SPI3_IRQHandler + .thumb_set SPI3_IRQHandler,Default_Handler + + .weak UART4_IRQHandler + .thumb_set UART4_IRQHandler,Default_Handler + + .weak UART5_IRQHandler + .thumb_set UART5_IRQHandler,Default_Handler + + .weak TIM6_IRQHandler + .thumb_set TIM6_IRQHandler,Default_Handler + + .weak TIM7_IRQHandler + .thumb_set TIM7_IRQHandler,Default_Handler + + .weak DMA2_Channel1_IRQHandler + .thumb_set DMA2_Channel1_IRQHandler,Default_Handler + + .weak DMA2_Channel2_IRQHandler + .thumb_set DMA2_Channel2_IRQHandler,Default_Handler + + .weak DMA2_Channel3_IRQHandler + .thumb_set DMA2_Channel3_IRQHandler,Default_Handler + + .weak DMA2_Channel4_5_IRQHandler + .thumb_set DMA2_Channel4_5_IRQHandler,Default_Handler + + .weak SystemInit_ExtMemCtl + .thumb_set SystemInit_ExtMemCtl,SystemInit_ExtMemCtl_Dummy +