diff options
Diffstat (limited to 'core/riscv-rv32i/panic.c')
| -rw-r--r-- | core/riscv-rv32i/panic.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/core/riscv-rv32i/panic.c b/core/riscv-rv32i/panic.c deleted file mode 100644 index b339fdf76c..0000000000 --- a/core/riscv-rv32i/panic.c +++ /dev/null @@ -1,169 +0,0 @@ -/* Copyright 2019 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "cpu.h" -#include "panic.h" -#include "task.h" -#include "util.h" - -#ifdef CONFIG_DEBUG_EXCEPTIONS -/** - * bit[3-0] @ mcause, general exception type information. - */ -static const char * const exc_type[16] = { - "Instruction address misaligned", - "Instruction access fault", - "Illegal instruction", - "Breakpoint", - "Load address misaligned", - "Load access fault", - "Store/AMO address misaligned", - "Store/AMO access fault", - - NULL, - NULL, - NULL, - "Environment call from M-mode", - NULL, - NULL, - NULL, - NULL, -}; -#endif /* CONFIG_DEBUG_EXCEPTIONS */ - -#ifdef CONFIG_SOFTWARE_PANIC -/* General purpose register (s0) for saving software panic reason */ -#define SOFT_PANIC_GPR_REASON 11 -/* General purpose register (s1) for saving software panic information */ -#define SOFT_PANIC_GPR_INFO 10 - -void software_panic(uint32_t reason, uint32_t info) -{ - asm volatile ("mv s0, %0" : : "r"(reason) : "s0"); - asm volatile ("mv s1, %0" : : "r"(info) : "s1"); - if (in_interrupt_context()) - asm("j excep_handler"); - else - asm("ebreak"); - __builtin_unreachable(); -} - -void panic_set_reason(uint32_t reason, uint32_t info, uint8_t exception) -{ - /* - * It is safe to get pointer using get_panic_data_write(). - * If it was called earlier (eg. when saving riscv.mepc) calling it - * once again won't remove any data - */ - struct panic_data * const pdata = get_panic_data_write(); - uint32_t warning_mepc; - uint32_t *regs; - - regs = pdata->riscv.regs; - - /* Setup panic data structure */ - if (reason != PANIC_SW_WATCHDOG) { - memset(pdata, 0, CONFIG_PANIC_DATA_SIZE); - } else { - warning_mepc = pdata->riscv.mepc; - memset(pdata, 0, CONFIG_PANIC_DATA_SIZE); - pdata->riscv.mepc = warning_mepc; - } - pdata->magic = PANIC_DATA_MAGIC; - pdata->struct_size = CONFIG_PANIC_DATA_SIZE; - pdata->struct_version = 2; - pdata->arch = PANIC_ARCH_RISCV_RV32I; - - /* Log panic cause */ - pdata->riscv.mcause = exception; - regs[SOFT_PANIC_GPR_REASON] = reason; - regs[SOFT_PANIC_GPR_INFO] = info; -} - -void panic_get_reason(uint32_t *reason, uint32_t *info, uint8_t *exception) -{ - struct panic_data * const pdata = panic_get_data(); - uint32_t *regs; - - if (pdata && pdata->struct_version == 2) { - regs = pdata->riscv.regs; - *exception = pdata->riscv.mcause; - *reason = regs[SOFT_PANIC_GPR_REASON]; - *info = regs[SOFT_PANIC_GPR_INFO]; - } else { - *exception = *reason = *info = 0; - } -} -#endif /* CONFIG_SOFTWARE_PANIC */ - -static void print_panic_information(uint32_t *regs, uint32_t mcause, - uint32_t mepc) -{ - panic_printf("=== EXCEPTION: MCAUSE=%x ===\n", mcause); - panic_printf("S11 %08x S10 %08x S9 %08x S8 %08x\n", - regs[0], regs[1], regs[2], regs[3]); - panic_printf("S7 %08x S6 %08x S5 %08x S4 %08x\n", - regs[4], regs[5], regs[6], regs[7]); - panic_printf("S3 %08x S2 %08x S1 %08x S0 %08x\n", - regs[8], regs[9], regs[10], regs[11]); - panic_printf("T6 %08x T5 %08x T4 %08x T3 %08x\n", - regs[12], regs[13], regs[14], regs[15]); - panic_printf("T2 %08x T1 %08x T0 %08x A7 %08x\n", - regs[16], regs[17], regs[18], regs[19]); - panic_printf("A6 %08x A5 %08x A4 %08x A3 %08x\n", - regs[20], regs[21], regs[22], regs[23]); - panic_printf("A2 %08x A1 %08x A0 %08x TP %08x\n", - regs[24], regs[25], regs[26], regs[27]); - panic_printf("GP %08x RA %08x SP %08x MEPC %08x\n", - regs[28], regs[29], regs[30], mepc); - -#ifdef CONFIG_DEBUG_EXCEPTIONS - if ((regs[SOFT_PANIC_GPR_REASON] & 0xfffffff0) == PANIC_SW_BASE) { -#ifdef CONFIG_SOFTWARE_PANIC - panic_printf("Software panic reason: %s\n", - panic_sw_reasons[(regs[SOFT_PANIC_GPR_REASON] - - PANIC_SW_BASE)]); - panic_printf("Software panic info: %d\n", - regs[SOFT_PANIC_GPR_INFO]); -#endif - } else { - panic_printf("Exception type: %s\n", exc_type[(mcause & 0xf)]); - } -#endif -} - -void report_panic(uint32_t *regs) -{ - uint32_t i, mcause, mepc; - struct panic_data * const pdata = get_panic_data_write(); - - mepc = get_mepc(); - mcause = get_mcause(); - - pdata->magic = PANIC_DATA_MAGIC; - pdata->struct_size = CONFIG_PANIC_DATA_SIZE; - pdata->struct_version = 2; - pdata->arch = PANIC_ARCH_RISCV_RV32I; - pdata->flags = 0; - pdata->reserved = 0; - - pdata->riscv.mcause = mcause; - pdata->riscv.mepc = mepc; - for (i = 0; i < 31; i++) - pdata->riscv.regs[i] = regs[i]; - - print_panic_information(regs, mcause, mepc); - panic_reboot(); -} - -void panic_data_print(const struct panic_data *pdata) -{ - uint32_t *regs, mcause, mepc; - - regs = (uint32_t *)pdata->riscv.regs; - mcause = pdata->riscv.mcause; - mepc = pdata->riscv.mepc; - print_panic_information(regs, mcause, mepc); -} |