diff options
Diffstat (limited to 'plat/common/aarch64/plat_common.c')
| -rw-r--r-- | plat/common/aarch64/plat_common.c | 43 |
1 files changed, 39 insertions, 4 deletions
diff --git a/plat/common/aarch64/plat_common.c b/plat/common/aarch64/plat_common.c index f8d312952..ba4c366a9 100644 --- a/plat/common/aarch64/plat_common.c +++ b/plat/common/aarch64/plat_common.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2014-2020, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -11,6 +11,7 @@ #if RAS_EXTENSION #include <lib/extensions/ras.h> #endif +#include <lib/extensions/twed.h> #include <lib/xlat_tables/xlat_mmu_helpers.h> #include <plat/common/platform.h> @@ -20,6 +21,7 @@ * platforms but may also be overridden by a platform if required. */ #pragma weak bl31_plat_runtime_setup +#pragma weak plat_arm_set_twedel_scr_el3 #if SDEI_SUPPORT #pragma weak plat_sdei_handle_masked_trigger @@ -64,6 +66,18 @@ int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode) } #endif +#if !ENABLE_BACKTRACE +static const char *get_el_str(unsigned int el) +{ + if (el == MODE_EL3) { + return "EL3"; + } else if (el == MODE_EL2) { + return "EL2"; + } + return "S-EL1"; +} +#endif /* !ENABLE_BACKTRACE */ + /* RAS functions common to AArch64 ARM platforms */ void plat_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie, void *handle, uint64_t flags) @@ -74,9 +88,30 @@ void plat_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie, if (handled != 0) return; #endif + unsigned int level = (unsigned int)GET_EL(read_spsr_el3()); - ERROR("Unhandled External Abort received on 0x%lx at EL3!\n", - read_mpidr_el1()); - ERROR(" exception reason=%u syndrome=0x%llx\n", ea_reason, syndrome); + ERROR("Unhandled External Abort received on 0x%lx from %s\n", + read_mpidr_el1(), get_el_str(level)); + ERROR("exception reason=%u syndrome=0x%llx\n", ea_reason, syndrome); +#if HANDLE_EA_EL3_FIRST + /* Skip backtrace for lower EL */ + if (level != MODE_EL3) { + console_flush(); + do_panic(); + } +#endif panic(); } + +/******************************************************************************* + * In v8.6+ platforms with delayed trapping of WFE this hook sets the delay. It + * is a weak function definition so can be overridden depending on the + * requirements of a platform. The only hook provided is for the TWED fields + * in SCR_EL3, the TWED fields in HCR_EL2, SCTLR_EL2, and SCTLR_EL1 should be + * configured as needed in lower exception levels. + ******************************************************************************/ + +uint32_t plat_arm_set_twedel_scr_el3(void) +{ + return TWED_DISABLED; +} |