blob: ae933f76d23cf775f14ba635c05cc2c12dd5b1b5 (
plain) (
tree)
|
|
/*
* NXP/Philips LPC22XX/LPC21xx Interrupt handler
* Ray 2007 <rayx.cn@gmail.com> to support LPC ARM
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <irq.h>
#include <bsp.h>
#include <lpc22xx.h>
/*
* Interrupt system initialization. Disable interrupts, clear
* any that are pending.
*/
void BSP_rtems_irq_mngt_init(void)
{
long *vectorTable;
int i;
/* disable all interrupts */
VICIntEnClr = 0xFFFFFFFF;
vectorTable = (long *) VECTOR_TABLE;
/* Initialize the vector table contents with default handler */
for (i=0; i<BSP_MAX_INT; i++) {
*(vectorTable + i) = (long)(default_int_handler);
}
/*
* Set IRQHandler
*/
IRQ_VECTOR_ADDR = 0xE59FF018; /* LDR PC,[PC,#0x18] instruction */
/*
* Set FIQHandler
*/
FIQ_VECTOR_ADDR = 0xE59FF018; /* LDR PC,[PC,#0x18] instruction */
/*
* We does not need the next interrupt sources in the moment,
* therefore jump to itself.
*/
UNDEFINED_INSTRUCTION_VECTOR_ADDR = 0xEAFFFFFE;
SOFTWARE_INTERRUPT_VECTOR_ADDR = 0xEAFFFFFE;
PREFETCH_ABORT_VECTOR_ADDR = 0xEAFFFFFE;
/*
* In case we must find an ABORT error,
* enable the next lines and set a breakpoint
* in ABORTHandler.
*/
#if 1
DATA_ABORT_VECTOR_ADDR = 0xE59FF018;
#endif
/*
* Init the Vectored Interrupt Controller (VIC)
*/
VICProtection = 0;
VICIntSelect = 0;
VICVectAddr = 0;
}
|
