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 #if !ERROR_DEPRECATED 23 #pragma weak plat_get_syscnt_freq2 24 #pragma weak bl31_early_platform_setup2 25 #endif /* ERROR_DEPRECATED */ 26 27 #if SDEI_SUPPORT 28 #pragma weak plat_sdei_handle_masked_trigger 29 #pragma weak plat_sdei_validate_entry_point 30 #endif 31 32 #pragma weak plat_ea_handler 33 34 void bl31_plat_runtime_setup(void) 35 { 36 #if MULTI_CONSOLE_API 37 console_switch_state(CONSOLE_FLAG_RUNTIME); 38 #else 39 console_uninit(); 40 #endif 41 } 42 43 #if !ENABLE_PLAT_COMPAT 44 /* 45 * Helper function for platform_get_pos() when platform compatibility is 46 * disabled. This is to enable SPDs using the older platform API to continue 47 * to work. 48 */ 49 unsigned int platform_core_pos_helper(unsigned long mpidr) 50 { 51 int idx = plat_core_pos_by_mpidr(mpidr); 52 assert(idx >= 0); 53 return idx; 54 } 55 #endif 56 57 58 #if !ERROR_DEPRECATED 59 unsigned int plat_get_syscnt_freq2(void) 60 { 61 WARN("plat_get_syscnt_freq() is deprecated\n"); 62 WARN("Please define plat_get_syscnt_freq2()\n"); 63 /* 64 * Suppress deprecated declaration warning in compatibility function 65 */ 66 #pragma GCC diagnostic push 67 #pragma GCC diagnostic ignored "-Wdeprecated-declarations" 68 unsigned long long freq = plat_get_syscnt_freq(); 69 #pragma GCC diagnostic pop 70 71 assert(freq >> 32 == 0); 72 73 return (unsigned int)freq; 74 } 75 76 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 77 u_register_t arg2, u_register_t arg3) 78 { 79 bl31_early_platform_setup((void *) arg0, (void *)arg1); 80 } 81 #endif /* ERROR_DEPRECATED */ 82 83 #if SDEI_SUPPORT 84 /* 85 * Function that handles spurious SDEI interrupts while events are masked. 86 */ 87 void plat_sdei_handle_masked_trigger(uint64_t mpidr, unsigned int intr) 88 { 89 WARN("Spurious SDEI interrupt %u on masked PE %llx\n", intr, mpidr); 90 } 91 92 /* 93 * Default Function to validate SDEI entry point, which returns success. 94 * Platforms may override this with their own validation mechanism. 95 */ 96 int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode) 97 { 98 return 0; 99 } 100 #endif 101 102 /* RAS functions common to AArch64 ARM platforms */ 103 void plat_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie, 104 void *handle, uint64_t flags) 105 { 106 #if RAS_EXTENSION 107 /* Call RAS EA handler */ 108 int handled = ras_ea_handler(ea_reason, syndrome, cookie, handle, flags); 109 if (handled != 0) 110 return; 111 #endif 112 113 ERROR("Unhandled External Abort received on 0x%lx at EL3!\n", 114 read_mpidr_el1()); 115 ERROR(" exception reason=%u syndrome=0x%llx\n", ea_reason, syndrome); 116 panic(); 117 } 118