portBASE_TYPE xPortStartScheduler( void )
{
/* Setup the hardware to generate the tick. */
prvSetupTimer();
/* Kick off the first task. */
vStartFirstTask();
/* Should not get here as the tasks are now running! */
return pdTRUE;
}
BaseType_t xPortStartScheduler( void )
{
extern void ( __FreeRTOS_interrupt_handler )( void );
extern void ( vStartFirstTask )( void );
/* Setup the FreeRTOS interrupt handler. */
/*
__asm__ volatile ( "la r6, r0, __FreeRTOS_interrupt_handler \n\t" \
"swi r6, r1, 4 \n\t" \
"lhui r7, r1, 4 \n\t" \
"ori r7, r7, 0xB0000000 \n\t" \
"swi r7, r0, 0x10 \n\t" \
"swi r7, r0, 0x18 \n\t" \
"andi r6, r6, 0xFFFF \n\t" \
"ori r6, r6, 0xB8080000 \n\t" \
"swi r6, r0, 0x14 \n\t" \
"swi r6, r0, 0x1C " );
*/
volatile uint32_t *p = (volatile uint32_t *)0x10;
uint32_t addr = (uint32_t)__FreeRTOS_interrupt_handler;
*p++ = (0xB0000000 | (addr >> 16));
*p++ = (0xB8080000 | (addr & 0xFFFF));
*p++ = (0xB0000000 | (addr >> 16));
*p++ = (0xB8080000 | (addr & 0xFFFF));
/* Setup the hardware to generate the tick. Interrupts are disabled when
this function is called. */
prvSetupTimerInterrupt();
/* Allocate the stack to be used by the interrupt handler. */
pulISRStack = ( uint32_t * ) pvPortMalloc( configMINIMAL_STACK_SIZE * sizeof( StackType_t ) );
/* Restore the context of the first task that is going to run. */
if( pulISRStack != NULL )
{
/* Fill the ISR stack with a known value to facilitate debugging. */
memset( pulISRStack, portISR_STACK_FILL_VALUE, configMINIMAL_STACK_SIZE * sizeof( StackType_t ) );
pulISRStack += ( configMINIMAL_STACK_SIZE - 1 );
portENABLE_INTERRUPTS();
/* Kick off the first task. */
vStartFirstTask();
}
/* Should not get here as the tasks are now running! */
return pdFALSE;
}
