diff options
Diffstat (limited to 'src/arch/arm')
| -rw-r--r-- | src/arch/arm/armv7/exception.c | 52 | ||||
| -rw-r--r-- | src/arch/arm/armv7/exception_asm.S | 15 |
2 files changed, 14 insertions, 53 deletions
diff --git a/src/arch/arm/armv7/exception.c b/src/arch/arm/armv7/exception.c index 3b32e8bbb1..b02e5c1892 100644 --- a/src/arch/arm/armv7/exception.c +++ b/src/arch/arm/armv7/exception.c @@ -29,12 +29,12 @@ #include <stdint.h> #include <types.h> +#include <arch/cache.h> #include <arch/exception.h> #include <console/console.h> -void exception_test(void); - -static int test_abort; +uint8_t exception_stack[0x100] __attribute__((aligned(8))); +extern void *exception_stack_end; void exception_undefined_instruction(uint32_t *); void exception_software_interrupt(uint32_t *); @@ -104,14 +104,9 @@ void exception_prefetch_abort(uint32_t *regs) void exception_data_abort(uint32_t *regs) { - if (test_abort) { - regs[15] = regs[0]; - return; - } else { - printk(BIOS_ERR, "exception _data_abort\n"); - print_regs(regs); - dump_stack(regs[13], 512); - } + printk(BIOS_ERR, "exception _data_abort\n"); + print_regs(regs); + dump_stack(regs[13], 512); die("exception"); } @@ -139,42 +134,19 @@ void exception_fiq(uint32_t *regs) die("exception"); } -static inline uint32_t get_sctlr(void) -{ - uint32_t val; - asm("mrc p15, 0, %0, c1, c0, 0" : "=r" (val)); - return val; -} - -static inline void set_sctlr(uint32_t val) -{ - asm volatile("mcr p15, 0, %0, c1, c0, 0" :: "r" (val)); - asm volatile("" ::: "memory"); -} - void exception_init(void) { - static const uint32_t sctlr_te = (0x1 << 30); - static const uint32_t sctlr_v = (0x1 << 13); - static const uint32_t sctlr_a = (0x1 << 1); - - uint32_t sctlr = get_sctlr(); + uint32_t sctlr = read_sctlr(); /* Handle exceptions in ARM mode. */ - sctlr &= ~sctlr_te; + sctlr &= ~SCTLR_TE; /* Set V=0 in SCTLR so VBAR points to the exception vector table. */ - sctlr &= ~sctlr_v; + sctlr &= ~SCTLR_V; /* Enforce alignment temporarily. */ - set_sctlr(sctlr | sctlr_a); + write_sctlr(sctlr); extern uint32_t exception_table[]; set_vbar((uintptr_t)exception_table); + exception_stack_end = exception_stack + sizeof(exception_stack); - test_abort = 1; - printk(BIOS_ERR, "Testing exceptions\n"); - exception_test(); - test_abort = 0; - printk(BIOS_ERR, "Testing exceptions: DONE\n"); - - /* Restore original alignment settings. */ - set_sctlr(sctlr); + printk(BIOS_DEBUG, "Exception handlers installed.\n"); } diff --git a/src/arch/arm/armv7/exception_asm.S b/src/arch/arm/armv7/exception_asm.S index 163fdbd52a..dd456363e9 100644 --- a/src/arch/arm/armv7/exception_asm.S +++ b/src/arch/arm/armv7/exception_asm.S @@ -27,11 +27,9 @@ * SUCH DAMAGE. */ -exception_stack: - .align 5 - .skip 0x2000, 0xa5 + .global exception_stack_end exception_stack_end: - .word exception_stack_end + .word 0 exception_handler: .word 0 @@ -105,12 +103,3 @@ set_vbar: mcr p15, 0, r0, c12, c0, 0 bx lr - .global exception_test - .thumb_func -exception_test: - mov r1, $1 - mov r0, pc - add r0, $3 - ldr r1, [r1] - bx lr - |