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