diff options
| -rw-r--r-- | arch/arm/lib/interrupts.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/lib/interrupts.c b/arch/arm/lib/interrupts.c index 9019736..4dacfd9 100644 --- a/arch/arm/lib/interrupts.c +++ b/arch/arm/lib/interrupts.c @@ -28,6 +28,8 @@ DECLARE_GLOBAL_DATA_PTR; #ifdef CONFIG_USE_IRQ int interrupt_init (void) { + unsigned long cpsr; + /* * setup up stacks if necessary */ @@ -35,6 +37,31 @@ int interrupt_init (void) IRQ_STACK_START_IN = gd->irq_sp + 8; FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; + + __asm__ __volatile__("mrs %0, cpsr\n" + : "=r" (cpsr) + : + : "memory"); + + __asm__ __volatile__("msr cpsr_c, %0\n" + "mov sp, %1\n" + : + : "r" (IRQ_MODE | I_BIT | F_BIT | (cpsr & ~FIQ_MODE)), + "r" (IRQ_STACK_START) + : "memory"); + + __asm__ __volatile__("msr cpsr_c, %0\n" + "mov sp, %1\n" + : + : "r" (FIQ_MODE | I_BIT | F_BIT | (cpsr & ~IRQ_MODE)), + "r" (FIQ_STACK_START) + : "memory"); + + __asm__ __volatile__("msr cpsr_c, %0" + : + : "r" (cpsr) + : "memory"); + return arch_interrupt_init(); } |