PRIVATE s32 idle_task(u32 arg)
{
unlock_irq(); /* kick off the system, will switch to the main_task */
while(1) {
#if 0
PRINT_INFO("in %s %d cpu_mode: %s; lr: 0x%x; sp: 0x%x; cpsr: 0x%x\n",
__func__, __LINE__, get_cpu_mode(NULL), __get_lr(), __get_sp(), __get_cpsr());
#endif
/* mdelay(100000); */
#if 0
PRINT_INFO("in %s %d cpu_mode: %s; lr: 0x%x; sp: 0x%x; cpsr: 0x%x\n",
__func__, __LINE__, get_cpu_mode(NULL), __get_lr(), __get_sp(), __get_cpsr());
#endif
}
return 0;
}
static void test_task()
{
unsigned long long t;
unsigned int th, bh;
unsigned int v;
int fd;
char *buf = "abcdefABCDEFabcdefABCDEFabcdefABCDEFabcdefABCDEFabcdef"
"ABCDEFabcdabcdefABCDEFabcdefABCDEFabcdefABCDEFabcdefABCDEF"
"abcdefABCDEFabcd";
sleep(3);
printk("\nstart write test %x %x\n", current, current->addr);
//if ((fd = open("/test_write", O_CREATE | O_RDWR)) <= 0) {
if ((fd = open("/test_write", O_RDWR)) == -ERR_PATH) {
if ((fd = open("/test_write", O_CREATE | O_RDWR)) < 0) {
printk("FAILED to create\n");
goto out;
}
int i;
//for (i = 0; i < 5000; i++) {
for (i = 0; i < 50; i++) {
if (write(fd, buf, 128) <= 0)
break;
printf("%d written\n", (i+1) * 128);
}
}
close(fd);
out:
if ((fd = open("/dev_overlap", O_CREATE)) > 0)
close(fd);
printf("\nend write test\n");
printf("test()\n");
printf("sp : %x, lr : %x\n", __get_sp(), __get_lr());
while (1) {
t = get_systick64();
th = t >> 32;
bh = t;
dmb();
v = systick;
printf("%08x ", v);
printf("%08x", th);
printf("%08x %d (%d sec)\n", bh, v, v/HZ);
sleep(1);
}
}
s32 os_main(u32 sp)
{
struct __os_task__ *ptask;
int_init();
uart_init();
dram_init();
timer_init();
mmc_init();
PRINT_INFO("%s\n", sys_banner);
coretimer_init();
task_init();
semaphore_init();
PRINT_INFO("cpu_mode: %s; lr: 0x%x; sp: 0x%x; cpsr: 0x%x\n",
get_cpu_mode(NULL), __get_lr(), sp, __get_cpsr());
gpio_set_function(GPIO_16, OUTPUT);
gpio_set_output(GPIO_16, 0);
/* set_log_level(LOG_DEBUG); */
/* create idle task */
if ((ptask = tcb_alloc()) == NULL) {
panic();
}
tcb_init(ptask, idle_task, 0, 256);
/*os_ready_insert(ptask);*/
current_task = &tcb[IDLE_TASK_ID]; /* assume that this is idle_task */
/* create main task */
if ((ptask = tcb_alloc()) == NULL) {
panic();
}
tcb_init(ptask, main_task, 0, 100);
os_ready_insert(ptask);
/* 'slip into idle task', cause the os_main() is not a task (it's the god code of system) */
__set_sp(&(task_stack[0][TASK_STK_SIZE]));
current_task->state = TASK_RUNNING;
idle_task(0);
kassert(0);
return 0;
}
void __attribute__((naked)) isr_fault()
{
/* disable interrupts */
/* save registers */
unsigned int sp, lr, psr, usp;
sp = __get_sp();
psr = __get_psr();
lr = __get_lr();
usp = __get_usp();
debug(MSG_ERROR, "\nFault type: %x <%08x>\n"
" (%x=Usage fault, %x=Bus fault, %x=Memory management fault)",
SCB_SHCSR & 0xfff, SCB_SHCSR, USAGE_FAULT, BUS_FAULT, MM_FAULT);
debug(MSG_ERROR, "Fault source: ");
busfault();
usagefault();
printk("\nKernel Space\n");
print_kernel_status((unsigned int *)sp, lr, psr);
printk("\nUser Space\n");
print_user_status((unsigned int *)usp);
printk("\nTask Status\n");
print_task_status(current);
printk("\nCurrent Context\n");
print_context((unsigned int *)usp);
printk("\nSCB_ICSR 0x%08x\n"
"SCB_CFSR 0x%08x\n"
"SCB_HFSR 0x%08x\n"
"SCB_MMFAR 0x%08x\n"
"SCB_BFAR 0x%08x\n",
SCB_ICSR, SCB_CFSR, SCB_HFSR, SCB_MMFAR, SCB_BFAR);
/* led for debugging */
#ifdef LED_DEBUG
SET_PORT_CLOCK(ENABLE, PORTD);
SET_PORT_PIN(PORTD, 2, PIN_OUTPUT_50MHZ);
unsigned int j;
while (1) {
PUT_PORT(PORTD, GET_PORT(PORTD) ^ 4);
for (i = 100; i; i--) {
for (j = 10; j; j--) {
__asm__ __volatile__(
"nop \n\t"
"nop \n\t"
"nop \n\t"
"nop \n\t"
"nop \n\t"
"nop \n\t"
"nop \n\t"
"nop \n\t"
"nop \n\t"
"nop \n\t"
::: "memory");
}
}
}
#endif
while (1);
/* restore registers */
/* enable interrupts */
}