| /* |
| * 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/cache.h> |
| #include <arch/exception.h> |
| #include <console/console.h> |
| |
| void exception_sync_el0(uint64_t *regs, uint64_t esr); |
| void exception_irq_el0(uint64_t *regs, uint64_t esr); |
| void exception_fiq_el0(uint64_t *regs, uint64_t esr); |
| void exception_serror_el0(uint64_t *regs, uint64_t esr); |
| void exception_sync(uint64_t *regs, uint64_t esr); |
| void exception_irq(uint64_t *regs, uint64_t esr); |
| void exception_fiq(uint64_t *regs, uint64_t esr); |
| void exception_serror(uint64_t *regs, uint64_t esr); |
| |
| static void print_regs(uint64_t *regs) |
| { |
| int i; |
| |
| /* ELR contains the restart PC at target exception level */ |
| printk(BIOS_ERR, "ELR = 0x%016llx ", regs[0]); |
| printk(BIOS_ERR, "X00 = 0x%016llx\n", regs[1]); |
| |
| for (i = 2; i < 31; i+=2) { |
| printk(BIOS_ERR, "X%02d = 0x%016llx ", i - 1, regs[i]); |
| printk(BIOS_ERR, "X%02d = 0x%016llx\n", i, regs[i + 1]); |
| } |
| } |
| |
| void exception_sync_el0(uint64_t *regs, uint64_t esr) |
| { |
| printk(BIOS_ERR, "exception _sync_el0 (ESR = 0x%08llx)\n", esr); |
| print_regs(regs); |
| die("exception"); |
| } |
| |
| void exception_irq_el0(uint64_t *regs, uint64_t esr) |
| { |
| printk(BIOS_ERR, "exception _irq_el0 (ESR = 0x%08llx)\n", esr); |
| print_regs(regs); |
| die("exception"); |
| } |
| |
| void exception_fiq_el0(uint64_t *regs, uint64_t esr) |
| { |
| printk(BIOS_ERR, "exception _fiq_el0 (ESR = 0x%08llx)\n", esr); |
| print_regs(regs); |
| die("exception"); |
| } |
| |
| void exception_serror_el0(uint64_t *regs, uint64_t esr) |
| { |
| printk(BIOS_ERR, "exception _serror_el0 (ESR = 0x%08llx)\n", esr); |
| print_regs(regs); |
| die("exception"); |
| } |
| |
| void exception_sync(uint64_t *regs, uint64_t esr) |
| { |
| printk(BIOS_ERR, "exception _sync (ESR = 0x%08llx)\n", esr); |
| print_regs(regs); |
| die("exception"); |
| } |
| |
| void exception_irq(uint64_t *regs, uint64_t esr) |
| { |
| printk(BIOS_ERR, "exception _irq (ESR = 0x%08llx)\n", esr); |
| print_regs(regs); |
| die("exception"); |
| } |
| |
| void exception_fiq(uint64_t *regs, uint64_t esr) |
| { |
| printk(BIOS_ERR, "exception _fiq (ESR = 0x%08llx)\n", esr); |
| print_regs(regs); |
| die("exception"); |
| } |
| |
| void exception_serror(uint64_t *regs, uint64_t esr) |
| { |
| printk(BIOS_ERR, "exception _serror (ESR = 0x%08llx)\n", esr); |
| print_regs(regs); |
| die("exception"); |
| } |
| |
| void exception_init(void) |
| { |
| //uint32_t sctlr = read_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. */ |
| //write_sctlr(sctlr); |
| |
| extern uint32_t exception_table[]; |
| set_vbar((uintptr_t)exception_table); |
| |
| printk(BIOS_DEBUG, "Exception handlers installed.\n"); |
| } |