rtt-f030/libcpu/arm/fm3/cpuport.c

123 lines
2.9 KiB
C

/*
* File : cpuport.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2009 - 2011, 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
* 2011-02-23 Bernard the first version
*/
#include <rthw.h>
#include <rtthread.h>
#include "mb9bf506r.h"
#include "core_cm3.h"
/* switch flag on interrupt and thread pointer to save switch record */
rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
rt_uint32_t rt_thread_switch_interrput_flag;
/* stack context in ARM Cortex-M3 */
struct stack_context
{
rt_uint32_t r0;
rt_uint32_t r1;
rt_uint32_t r2;
rt_uint32_t r3;
rt_uint32_t r12;
rt_uint32_t lr;
rt_uint32_t pc;
rt_uint32_t psr;
};
extern void rt_hw_interrupt_thread_switch(void);
extern void list_thread(void);
extern rt_thread_t rt_current_thread;
void rt_hw_hard_fault_exception(struct stack_context* contex)
{
rt_kprintf("psr: 0x%08x\n", contex->psr);
rt_kprintf(" pc: 0x%08x\n", contex->pc);
rt_kprintf(" lr: 0x%08x\n", contex->lr);
rt_kprintf("r12: 0x%08x\n", contex->r12);
rt_kprintf("r03: 0x%08x\n", contex->r3);
rt_kprintf("r02: 0x%08x\n", contex->r2);
rt_kprintf("r01: 0x%08x\n", contex->r1);
rt_kprintf("r00: 0x%08x\n", contex->r0);
if (rt_current_thread != RT_NULL)
{
rt_kprintf("hard fault on thread: %s\n", rt_current_thread->name);
#ifdef RT_USING_FINSH
list_thread();
#endif
while (1);
}
else
{
rt_kprintf("hard fault on initialization\n");
}
}
/**
* reset MCU
*
*/
void rt_hw_cpu_reset()
{
NVIC_SystemReset();
}
/**
* shutdown CPU
*
*/
void rt_hw_cpu_shutdown()
{
rt_kprintf("shutdown...\n");
RT_ASSERT(0);
}
/**
* 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)
{
unsigned long *stk;
stk = (unsigned long *)stack_addr;
*(stk) = 0x01000000L; /* PSR */
*(--stk) = (unsigned long)tentry; /* entry point, pc */
*(--stk) = (unsigned long)texit; /* lr */
*(--stk) = 0; /* r12 */
*(--stk) = 0; /* r3 */
*(--stk) = 0; /* r2 */
*(--stk) = 0; /* r1 */
*(--stk) = (unsigned long)parameter; /* r0 : argument */
*(--stk) = 0; /* r11 */
*(--stk) = 0; /* r10 */
*(--stk) = 0; /* r9 */
*(--stk) = 0; /* r8 */
*(--stk) = 0; /* r7 */
*(--stk) = 0; /* r6 */
*(--stk) = 0; /* r5 */
*(--stk) = 0; /* r4 */
/* return task's current stack address */
return (rt_uint8_t *)stk;
}