1 /* 2 * Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 9 #include <arch_helpers.h> 10 #include <drivers/console.h> 11 #if RAS_EXTENSION 12 #include <lib/extensions/ras.h> 13 #endif 14 #include <lib/xlat_tables/xlat_mmu_helpers.h> 15 #include <plat/common/platform.h> 16 17 /* 18 * The following platform setup functions are weakly defined. They 19 * provide typical implementations that may be re-used by multiple 20 * platforms but may also be overridden by a platform if required. 21 */ 22 #pragma weak bl31_plat_runtime_setup 23 24 #if SDEI_SUPPORT 25 #pragma weak plat_sdei_handle_masked_trigger 26 #pragma weak plat_sdei_validate_entry_point 27 #endif 28 29 #pragma weak plat_ea_handler 30 31 void bl31_plat_runtime_setup(void) 32 { 33 #if MULTI_CONSOLE_API 34 console_switch_state(CONSOLE_FLAG_RUNTIME); 35 #else 36 console_uninit(); 37 #endif 38 } 39 40 /* 41 * Helper function for platform_get_pos() when platform compatibility is 42 * disabled. This is to enable SPDs using the older platform API to continue 43 * to work. 44 */ 45 unsigned int platform_core_pos_helper(unsigned long mpidr) 46 { 47 int idx = plat_core_pos_by_mpidr(mpidr); 48 assert(idx >= 0); 49 return idx; 50 } 51 52 #if SDEI_SUPPORT 53 /* 54 * Function that handles spurious SDEI interrupts while events are masked. 55 */ 56 void plat_sdei_handle_masked_trigger(uint64_t mpidr, unsigned int intr) 57 { 58 WARN("Spurious SDEI interrupt %u on masked PE %llx\n", intr, mpidr); 59 } 60 61 /* 62 * Default Function to validate SDEI entry point, which returns success. 63 * Platforms may override this with their own validation mechanism. 64 */ 65 int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode) 66 { 67 return 0; 68 } 69 #endif 70 71 /* RAS functions common to AArch64 ARM platforms */ 72 void plat_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie, 73 void *handle, uint64_t flags) 74 { 75 #if RAS_EXTENSION 76 /* Call RAS EA handler */ 77 int handled = ras_ea_handler(ea_reason, syndrome, cookie, handle, flags); 78 if (handled != 0) 79 return; 80 #endif 81 82 ERROR("Unhandled External Abort received on 0x%lx at EL3!\n", 83 read_mpidr_el1()); 84 ERROR(" exception reason=%u syndrome=0x%llx\n", ea_reason, syndrome); 85 panic(); 86 } 87