void arm_cm_irq_entry(void)
{
inc_critical_section();
THREAD_STATS_INC(interrupts);
KEVLOG_IRQ_ENTER(__get_IPSR());
}
static void busfault(struct arm_cm_exception_frame *frame)
{
inc_critical_section();
printf("busfault: ");
dump_frame(frame);
platform_halt(HALT_ACTION_HALT, HALT_REASON_SW_PANIC);
}
void lk_main(void)
{
inc_critical_section();
// get us into some sort of thread context
thread_init_early();
// early arch stuff
lk_init_level(LK_INIT_LEVEL_ARCH_EARLY - 1);
arch_early_init();
// do any super early platform initialization
lk_init_level(LK_INIT_LEVEL_PLATFORM_EARLY - 1);
platform_early_init();
// do any super early target initialization
lk_init_level(LK_INIT_LEVEL_TARGET_EARLY - 1);
target_early_init();
dprintf(INFO, "welcome to lk\n\n");
#if WITH_PLATFORM_MSM_SHARED
bs_set_timestamp(BS_BL_START);
#endif
// deal with any static constructors
dprintf(SPEW, "calling constructors\n");
call_constructors();
// bring up the kernel heap
dprintf(SPEW, "initializing heap\n");
lk_init_level(LK_INIT_LEVEL_HEAP - 1);
heap_init();
#if WITH_PLATFORM_MSM_SHARED
__stack_chk_guard_setup();
#endif
// initialize the kernel
lk_init_level(LK_INIT_LEVEL_KERNEL - 1);
kernel_init();
lk_init_level(LK_INIT_LEVEL_THREADING - 1);
#if (!ENABLE_NANDWRITE)
// create a thread to complete system initialization
dprintf(SPEW, "creating bootstrap completion thread\n");
thread_t *t = thread_create("bootstrap2", &bootstrap2, NULL, DEFAULT_PRIORITY, DEFAULT_STACK_SIZE);
thread_detach(t);
thread_resume(t);
// become the idle thread and enable interrupts to start the scheduler
thread_become_idle();
#else
bootstrap_nandwrite();
#endif
}
static void hardfault(struct arm_cm_exception_frame *frame)
{
inc_critical_section();
printf("hardfault: ");
dump_frame(frame);
printf("HFSR 0x%x\n", SCB->HFSR);
platform_halt(HALT_ACTION_HALT, HALT_REASON_SW_PANIC);
}
static void exception_die(struct x86_iframe *frame, const char *msg)
{
inc_critical_section();
dprintf(CRITICAL, msg);
dump_fault_frame(frame);
for (;;) {
x86_cli();
x86_hlt();
}
}
void sam3_uart_irq(void)
{
inc_critical_section();
unsigned char c;
if (uart_read(UART, &c) == 0) {
cbuf_write(&debug_rx_buf, &c, 1, false);
cm3_trigger_preempt();
}
dec_critical_section();
}
void lk_main(ulong arg0, ulong arg1, ulong arg2, ulong arg3)
{
inc_critical_section();
// save the boot args
lk_boot_args[0] = arg0;
lk_boot_args[1] = arg1;
lk_boot_args[2] = arg2;
lk_boot_args[3] = arg3;
// get us into some sort of thread context
thread_init_early();
// early arch stuff
lk_init_level(LK_INIT_LEVEL_ARCH_EARLY - 1);
arch_early_init();
// do any super early platform initialization
lk_init_level(LK_INIT_LEVEL_PLATFORM_EARLY - 1);
platform_early_init();
// do any super early target initialization
lk_init_level(LK_INIT_LEVEL_TARGET_EARLY - 1);
target_early_init();
dprintf(INFO, "welcome to lk\n\n");
dprintf(INFO, "boot args 0x%lx 0x%lx 0x%lx 0x%lx\n",
lk_boot_args[0], lk_boot_args[1], lk_boot_args[2], lk_boot_args[3]);
// deal with any static constructors
dprintf(SPEW, "calling constructors\n");
call_constructors();
// bring up the kernel heap
dprintf(SPEW, "initializing heap\n");
lk_init_level(LK_INIT_LEVEL_HEAP - 1);
heap_init();
// initialize the kernel
lk_init_level(LK_INIT_LEVEL_KERNEL - 1);
kernel_init();
lk_init_level(LK_INIT_LEVEL_THREADING - 1);
// create a thread to complete system initialization
dprintf(SPEW, "creating bootstrap completion thread\n");
thread_t *t = thread_create("bootstrap2", &bootstrap2, NULL, DEFAULT_PRIORITY, DEFAULT_STACK_SIZE);
thread_detach(t);
thread_resume(t);
// become the idle thread and enable interrupts to start the scheduler
thread_become_idle();
}
static void exception_die(struct arm_fault_frame *frame, int pc_off, const char *msg)
{
inc_critical_section();
frame->pc += pc_off;
dprintf(CRITICAL, msg);
dump_fault_frame(frame);
#ifdef LGE_WITH_CRASH_HANDLER
platform_halt();
#else
halt();
#endif
for(;;);
}
/* use systick as the kernel tick */
void _systick(void)
{
inc_critical_section();
bool resched = false;
ticks += 10;
if (cb) {
if (cb(cb_args, ticks) == INT_RESCHEDULE)
resched = true;
}
if (resched) {
// have the cortex-m3 queue a preemption
cm3_trigger_preempt();
}
dec_critical_section();
}
void lk_main(void)
{
inc_critical_section();
// get us into some sort of thread context
thread_init_early();
// early arch stuff
arch_early_init();
// do any super early platform initialization
platform_early_init();
// do any super early target initialization
target_early_init();
dprintf(INFO, "welcome to lk\n\n");
// deal with any static constructors
dprintf(SPEW, "calling constructors\n");
call_constructors();
// bring up the kernel heap
dprintf(SPEW, "initializing heap\n");
heap_init();
// initialize the kernel
kernel_init();
// create a thread to complete system initialization
dprintf(SPEW, "creating bootstrap completion thread\n");
thread_t *t = thread_create("bootstrap2", &bootstrap2, NULL, DEFAULT_PRIORITY, DEFAULT_STACK_SIZE);
thread_detach(t);
thread_resume(t);
// become the idle thread and enable interrupts to start the scheduler
thread_become_idle();
}
void _memmanage(void)
{
inc_critical_section();
printf("memmanage\n");
platform_halt(HALT_ACTION_HALT, HALT_REASON_SW_PANIC);
}
void _nmi(void)
{
inc_critical_section();
printf("nmi\n");
platform_halt(HALT_ACTION_HALT, HALT_REASON_SW_PANIC);
}
/* systick handler */
void __WEAK _systick(void)
{
inc_critical_section();
printf("systick\n");
platform_halt(HALT_ACTION_HALT, HALT_REASON_SW_PANIC);
}