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Diffstat (limited to 'src/arch/armv7/exception.c')
| -rw-r--r-- | src/arch/armv7/exception.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/src/arch/armv7/exception.c b/src/arch/armv7/exception.c deleted file mode 100644 index 3b32e8bbb1..0000000000 --- a/src/arch/armv7/exception.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * This file is part of the libpayload project. - * - * Copyright 2013 Google Inc. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <stdint.h> -#include <types.h> -#include <arch/exception.h> -#include <console/console.h> - -void exception_test(void); - -static int test_abort; - -void exception_undefined_instruction(uint32_t *); -void exception_software_interrupt(uint32_t *); -void exception_prefetch_abort(uint32_t *); -void exception_data_abort(uint32_t *); -void exception_not_used(uint32_t *); -void exception_irq(uint32_t *); -void exception_fiq(uint32_t *); - -static void dump_stack(uintptr_t addr, size_t bytes) -{ - int i, j; - const int line = 8; - uint32_t *ptr = (uint32_t *)(addr & ~(line * sizeof(*ptr) - 1)); - - printk(BIOS_ERR, "Dumping stack:\n"); - for (i = bytes / sizeof(*ptr); i >= 0; i -= line) { - printk(BIOS_ERR, "%p: ", ptr + i); - for (j = i; j < i + line; j++) - printk(BIOS_ERR, "%08x ", *(ptr + j)); - printk(BIOS_ERR, "\n"); - } -} - -static void print_regs(uint32_t *regs) -{ - int i; - - for (i = 0; i < 16; i++) { - if (i == 15) - printk(BIOS_ERR, "PC"); - else if (i == 14) - printk(BIOS_ERR, "LR"); - else if (i == 13) - printk(BIOS_ERR, "SP"); - else if (i == 12) - printk(BIOS_ERR, "IP"); - else - printk(BIOS_ERR, "R%d", i); - printk(BIOS_ERR, " = 0x%08x\n", regs[i]); - } -} - -void exception_undefined_instruction(uint32_t *regs) -{ - printk(BIOS_ERR, "exception _undefined_instruction\n"); - print_regs(regs); - dump_stack(regs[13], 512); - die("exception"); -} - -void exception_software_interrupt(uint32_t *regs) -{ - printk(BIOS_ERR, "exception _software_interrupt\n"); - print_regs(regs); - dump_stack(regs[13], 512); - die("exception"); -} - -void exception_prefetch_abort(uint32_t *regs) -{ - printk(BIOS_ERR, "exception _prefetch_abort\n"); - print_regs(regs); - dump_stack(regs[13], 512); - die("exception"); -} - -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); - } - die("exception"); -} - -void exception_not_used(uint32_t *regs) -{ - printk(BIOS_ERR, "exception _not_used\n"); - print_regs(regs); - dump_stack(regs[13], 512); - die("exception"); -} - -void exception_irq(uint32_t *regs) -{ - printk(BIOS_ERR, "exception _irq\n"); - print_regs(regs); - dump_stack(regs[13], 512); - die("exception"); -} - -void exception_fiq(uint32_t *regs) -{ - printk(BIOS_ERR, "exception _fiq\n"); - print_regs(regs); - dump_stack(regs[13], 512); - 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(); - /* Handle exceptions in ARM mode. */ - sctlr &= ~sctlr_te; - /* Set V=0 in SCTLR so VBAR points to the exception vector table. */ - sctlr &= ~sctlr_v; - /* Enforce alignment temporarily. */ - set_sctlr(sctlr | sctlr_a); - - extern uint32_t exception_table[]; - set_vbar((uintptr_t)exception_table); - - 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); -} |