mirror of
https://github.com/RT-Thread/rt-thread.git
synced 2026-09-20 17:44:20 +08:00
*** EFM32 branch ***
1. Add SD card driver (SPI mode) 2. Add ELM ChaN FatFs support (Please read "Readme.txt") - Warning: FatFs is really FAT! (35KB) 3. Upgrade EFM32 libraries (CMSIS and efm32lib) to version 2.0.0 4. Merge all of the C source code in "libcpu\arm\cortex-m3\" into "cpuport.c" 5. Merge all of the assembly source code in "libcpu\arm\cortex-m3\" into "context_gcc.S" (except "start_gcc.S") git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1525 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
onelife.real
@@ -13,6 +13,7 @@
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* Date Author Notes
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* 2009-10-11 Bernard first version
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* 2010-12-29 onelife Modify for EFM32
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* 2011-06-17 onelife Merge all of the assembly source code into context_gcc.S
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*********************************************************************/
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/******************************************************************//**
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@@ -87,9 +88,9 @@ _reswitch:
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* R1 --> swith to thread stack
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* psr, pc, LR, R12, R3, R2, R1, R0 are pushed into [from] stack
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*/
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.global rt_hw_pend_sv
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.type rt_hw_pend_sv, %function
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rt_hw_pend_sv:
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.global PendSV_Handler
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.type PendSV_Handler, %function
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PendSV_Handler:
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/* disable interrupt to protect context switch */
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MRS R2, PRIMASK
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CPSID I
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@@ -169,6 +170,18 @@ rt_hw_interrupt_thread_switch:
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BX LR
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NOP
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.global HardFault_Handler
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.type HardFault_Handler, %function
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HardFault_Handler:
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/* get current context */
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MRS r0, psp /* get fault thread stack pointer */
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PUSH {lr}
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BL rt_hw_hard_fault_exception
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POP {lr}
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ORR lr, lr, #0x04
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BX lr
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/******************************************************************//**
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* @}
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*********************************************************************/
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@@ -1,54 +0,0 @@
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/******************************************************************//**
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* @file cpu.c
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* @brief This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2011, RT-Thread Development Team
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* @author Bernard, onelife
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* @version 0.4 beta
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**********************************************************************
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* @section License
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* The license and distribution terms for this file may be found in the file LICENSE in this
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* distribution or at http://www.rt-thread.org/license/LICENSE
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**********************************************************************
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* @section Change Logs
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* Date Author Notes
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* 2009-01-05 Bernard first version
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* 2011-02-14 onelife Modify for EFM32
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*********************************************************************/
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/******************************************************************//**
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* @addtogroup cortex-m3
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* @{
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*********************************************************************/
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/* Includes -------------------------------------------------------------------*/
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#include <rtthread.h>
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/* Private typedef -------------------------------------------------------------*/
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/* Private define --------------------------------------------------------------*/
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/* Private macro --------------------------------------------------------------*/
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/* Private variables ------------------------------------------------------------*/
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/* Private function prototypes ---------------------------------------------------*/
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/* Private functions ------------------------------------------------------------*/
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/**
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* reset cpu by dog's time-out
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*
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*/
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void rt_hw_cpu_reset()
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{
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/*NOTREACHED*/
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}
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/**
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* shutdown CPU
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*
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*/
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void rt_hw_cpu_shutdown()
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{
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rt_kprintf("shutdown...\n");
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RT_ASSERT(0);
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}
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/******************************************************************//**
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* @}
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*********************************************************************/
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@@ -1,5 +1,5 @@
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/******************************************************************//**
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* @file fault.c
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* @file cpu.c
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* @brief This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2011, RT-Thread Development Team
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* @author Bernard, onelife
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@@ -13,6 +13,7 @@
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* Date Author Notes
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* 2009-01-05 Bernard first version
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* 2011-02-14 onelife Modify for EFM32
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* 2011-06-17 onelife Merge all of the C source code into cpuport.c
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*********************************************************************/
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/******************************************************************//**
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@@ -39,12 +40,42 @@ struct stack_contex
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/* Private define --------------------------------------------------------------*/
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/* Private macro --------------------------------------------------------------*/
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/* Private variables ------------------------------------------------------------*/
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/* External function prototypes --------------------------------------------------*/
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extern void list_thread(void);
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extern rt_thread_t rt_current_thread;
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/* exception and interrupt handler table */
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rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
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rt_uint32_t rt_thread_switch_interrput_flag;
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/* Private function prototypes ---------------------------------------------------*/
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/* Private functions ------------------------------------------------------------*/
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rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
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rt_uint8_t *stack_addr, void *texit)
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{
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unsigned long *stk;
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stk = (unsigned long *)stack_addr;
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*(stk) = 0x01000000L; /* PSR */
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*(--stk) = (unsigned long)tentry; /* entry point, pc */
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*(--stk) = (unsigned long)texit; /* lr */
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*(--stk) = 0; /* r12 */
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*(--stk) = 0; /* r3 */
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*(--stk) = 0; /* r2 */
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*(--stk) = 0; /* r1 */
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*(--stk) = (unsigned long)parameter; /* r0 : argument */
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*(--stk) = 0; /* r11 */
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*(--stk) = 0; /* r10 */
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*(--stk) = 0; /* r9 */
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*(--stk) = 0; /* r8 */
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*(--stk) = 0; /* r7 */
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*(--stk) = 0; /* r6 */
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*(--stk) = 0; /* r5 */
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*(--stk) = 0; /* r4 */
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/* return task's current stack address */
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return (rt_uint8_t *)stk;
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}
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extern void list_thread(void);
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extern rt_thread_t rt_current_thread;
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void rt_hw_hard_fault_exception(struct stack_contex* contex)
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{
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rt_kprintf("psr: 0x%08x\n", contex->psr);
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@@ -63,6 +94,13 @@ void rt_hw_hard_fault_exception(struct stack_contex* contex)
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while (1);
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}
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void rt_hw_cpu_shutdown()
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{
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rt_kprintf("shutdown...\n");
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RT_ASSERT(0);
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}
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/******************************************************************//**
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* @}
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*********************************************************************/
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@@ -1,43 +0,0 @@
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/******************************************************************//**
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* @file fault_gcc.S
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* @brief Faults handling functions
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* COPYRIGHT (C) 2011, RT-Thread Development Team
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* @author Bernard, onelife
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* @version 0.4 beta
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**********************************************************************
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* @section License
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* The license and distribution terms for this file may be found in the file LICENSE in this
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* distribution or at http://www.rt-thread.org/license/LICENSE
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**********************************************************************
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* @section Change Logs
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* Date Author Notes
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* 2009-10-11 Bernard first version
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* 2010-12-29 onelife Modify for EFM32
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*********************************************************************/
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/******************************************************************//**
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* @addtogroup cortex-m3
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* @{
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*********************************************************************/
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.cpu cortex-m3
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.fpu softvfp
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.syntax unified
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.thumb
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.text
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.global rt_hw_hard_fault
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.type rt_hw_hard_fault, %function
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rt_hw_hard_fault:
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/* get current context */
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MRS r0, psp /* get fault thread stack pointer */
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PUSH {lr}
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BL rt_hw_hard_fault_exception
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POP {lr}
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ORR lr, lr, #0x04
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BX lr
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/******************************************************************//**
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* @}
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*********************************************************************/
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@@ -1,39 +0,0 @@
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/******************************************************************//**
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* @file interrupt.c
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* @brief This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2011, RT-Thread Development Team
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* @author Bernard, onelife
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* @version 0.4 beta
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**********************************************************************
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* @section License
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* The license and distribution terms for this file may be found in the file LICENSE in this
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* distribution or at http://www.rt-thread.org/license/LICENSE
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**********************************************************************
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* @section Change Logs
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* Date Author Notes
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* 2009-01-05 Bernard first version
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* 2011-02-14 onelife Modify for EFM32
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*********************************************************************/
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/******************************************************************//**
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* @addtogroup cortex-m3
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* @{
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*********************************************************************/
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/* Includes -------------------------------------------------------------------*/
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#include <rtthread.h>
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/* Private typedef -------------------------------------------------------------*/
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/* Private define --------------------------------------------------------------*/
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/* Private macro --------------------------------------------------------------*/
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/* Private variables ------------------------------------------------------------*/
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/* exception and interrupt handler table */
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rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
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rt_uint32_t rt_thread_switch_interrput_flag;
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/* Private function prototypes ---------------------------------------------------*/
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/* Private functions ------------------------------------------------------------*/
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/******************************************************************//**
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* @}
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*********************************************************************/
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@@ -1,72 +0,0 @@
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/******************************************************************//**
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* @file stack.c
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* @brief This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2011, RT-Thread Development Team
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* @author Bernard, onelife
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* @version 0.4 beta
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**********************************************************************
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* @section License
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* The license and distribution terms for this file may be found in the file LICENSE in this
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* distribution or at http://www.rt-thread.org/license/LICENSE
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**********************************************************************
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* @section Change Logs
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* Date Author Notes
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* 2006-08-23 Bernard first version
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* 2011-02-14 onelife Modify for EFM32
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*********************************************************************/
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/******************************************************************//**
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* @addtogroup cortex-m3
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* @{
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*********************************************************************/
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/* Includes -------------------------------------------------------------------*/
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#include <rtthread.h>
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/* Private typedef -------------------------------------------------------------*/
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/* Private define --------------------------------------------------------------*/
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/* Private macro --------------------------------------------------------------*/
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/* Private variables ------------------------------------------------------------*/
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/* Private function prototypes ---------------------------------------------------*/
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/* Private functions ------------------------------------------------------------*/
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/**
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* This function will initialize thread stack
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*
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* @param tentry the entry of thread
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* @param parameter the parameter of entry
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* @param stack_addr the beginning stack address
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* @param texit the function will be called when thread exit
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*
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* @return stack address
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*/
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rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
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rt_uint8_t *stack_addr, void *texit)
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{
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unsigned long *stk;
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stk = (unsigned long *)stack_addr;
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*(stk) = 0x01000000L; /* PSR */
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*(--stk) = (unsigned long)tentry; /* entry point, pc */
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*(--stk) = (unsigned long)texit; /* lr */
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*(--stk) = 0; /* r12 */
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*(--stk) = 0; /* r3 */
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*(--stk) = 0; /* r2 */
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*(--stk) = 0; /* r1 */
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*(--stk) = (unsigned long)parameter; /* r0 : argument */
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*(--stk) = 0; /* r11 */
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*(--stk) = 0; /* r10 */
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*(--stk) = 0; /* r9 */
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*(--stk) = 0; /* r8 */
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*(--stk) = 0; /* r7 */
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*(--stk) = 0; /* r6 */
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*(--stk) = 0; /* r5 */
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*(--stk) = 0; /* r4 */
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/* return task's current stack address */
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return (rt_uint8_t *)stk;
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}
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/******************************************************************//**
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* @}
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*********************************************************************/
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@@ -51,7 +51,7 @@ g_pfnVectors:
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.word Initial_spTop
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.word Reset_Handler
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.word NMI_Handler
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.word rt_hw_hard_fault
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.word HardFault_Handler
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.word MemManage_Handler
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.word BusFault_Handler
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.word UsageFault_Handler
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@@ -62,8 +62,8 @@ g_pfnVectors:
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.word SVC_Handler
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.word DebugMon_Handler
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.word 0
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.word rt_hw_pend_sv
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.word rt_hw_timer_handler
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.word PendSV_Handler
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.word SysTick_Handler
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/* External Interrupts */
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.word DMA_IRQHandler /* 0: DMA Interrupt (efm32_dma.c) */
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.word GPIO_EVEN_IRQHandler /* 1: GPIO_EVEN Interrupt */
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