1 /* 2 * Copyright (c) 2021-2024, Arm Limited. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <stdint.h> 8 9 #include <common/tbbr/tbbr_img_def.h> 10 #include <drivers/measured_boot/event_log/event_log.h> 11 #include <drivers/measured_boot/metadata.h> 12 #if defined(ARM_COT_cca) 13 #include <tools_share/cca_oid.h> 14 #else 15 #include <tools_share/tbbr_oid.h> 16 #endif /* ARM_COT_cca */ 17 #include <fvp_critical_data.h> 18 19 #include <plat/arm/common/plat_arm.h> 20 #include <plat/common/common_def.h> 21 22 #if defined(SPD_tspd) || defined(SPD_opteed) || defined(SPD_spmd) 23 CASSERT(ARM_EVENT_LOG_DRAM1_SIZE >= PLAT_ARM_EVENT_LOG_MAX_SIZE, \ 24 assert_res_eventlog_mem_insufficient); 25 #endif /* defined(SPD_tspd) || defined(SPD_opteed) || defined(SPD_spmd) */ 26 27 /* Event Log data */ 28 static uint64_t event_log_base; 29 30 /* FVP table with platform specific image IDs, names and PCRs */ 31 const event_log_metadata_t fvp_event_log_metadata[] = { 32 { BL31_IMAGE_ID, MBOOT_BL31_IMAGE_STRING, PCR_0 }, 33 { BL32_IMAGE_ID, MBOOT_BL32_IMAGE_STRING, PCR_0 }, 34 { BL32_EXTRA1_IMAGE_ID, MBOOT_BL32_EXTRA1_IMAGE_STRING, PCR_0 }, 35 { BL32_EXTRA2_IMAGE_ID, MBOOT_BL32_EXTRA2_IMAGE_STRING, PCR_0 }, 36 { BL33_IMAGE_ID, MBOOT_BL33_IMAGE_STRING, PCR_0 }, 37 { HW_CONFIG_ID, MBOOT_HW_CONFIG_STRING, PCR_0 }, 38 { NT_FW_CONFIG_ID, MBOOT_NT_FW_CONFIG_STRING, PCR_0 }, 39 { SCP_BL2_IMAGE_ID, MBOOT_SCP_BL2_IMAGE_STRING, PCR_0 }, 40 { SOC_FW_CONFIG_ID, MBOOT_SOC_FW_CONFIG_STRING, PCR_0 }, 41 { TOS_FW_CONFIG_ID, MBOOT_TOS_FW_CONFIG_STRING, PCR_0 }, 42 { RMM_IMAGE_ID, MBOOT_RMM_IMAGE_STRING, PCR_0}, 43 44 #if defined(SPD_spmd) 45 { SP_PKG1_ID, MBOOT_SP1_STRING, PCR_0 }, 46 { SP_PKG2_ID, MBOOT_SP2_STRING, PCR_0 }, 47 { SP_PKG3_ID, MBOOT_SP3_STRING, PCR_0 }, 48 { SP_PKG4_ID, MBOOT_SP4_STRING, PCR_0 }, 49 { SP_PKG5_ID, MBOOT_SP5_STRING, PCR_0 }, 50 { SP_PKG6_ID, MBOOT_SP6_STRING, PCR_0 }, 51 { SP_PKG7_ID, MBOOT_SP7_STRING, PCR_0 }, 52 { SP_PKG8_ID, MBOOT_SP8_STRING, PCR_0 }, 53 #endif 54 55 { CRITICAL_DATA_ID, EVLOG_CRITICAL_DATA_STRING, PCR_1 }, 56 57 { EVLOG_INVALID_ID, NULL, (unsigned int)(-1) } /* Terminator */ 58 }; 59 60 void bl2_plat_mboot_init(void) 61 { 62 uint8_t *event_log_start; 63 uint8_t *event_log_finish; 64 size_t bl1_event_log_size; 65 size_t event_log_max_size; 66 int rc; 67 68 rc = arm_get_tb_fw_info(&event_log_base, &bl1_event_log_size, 69 &event_log_max_size); 70 if (rc != 0) { 71 ERROR("%s(): Unable to get Event Log info from TB_FW_CONFIG\n", 72 __func__); 73 /* 74 * It is a fatal error because on FVP platform, BL2 software 75 * assumes that a valid Event Log buffer exist and it will use 76 * same Event Log buffer to append image measurements. 77 */ 78 panic(); 79 } 80 81 /* 82 * BL1 and BL2 share the same Event Log buffer and that BL2 will 83 * append its measurements after BL1's 84 */ 85 event_log_start = (uint8_t *)((uintptr_t)event_log_base + 86 bl1_event_log_size); 87 event_log_finish = (uint8_t *)((uintptr_t)event_log_base + 88 event_log_max_size); 89 90 event_log_init((uint8_t *)event_log_start, event_log_finish); 91 } 92 93 int plat_mboot_measure_critical_data(unsigned int critical_data_id, 94 const void *base, size_t size) 95 { 96 /* 97 * It is very unlikely that the critical data size would be 98 * bigger than 2^32 bytes 99 */ 100 assert(size < UINT32_MAX); 101 assert(base != NULL); 102 103 /* Calculate image hash and record data in Event Log */ 104 int err = event_log_measure_and_record((uintptr_t)base, (uint32_t)size, 105 critical_data_id, 106 fvp_event_log_metadata); 107 if (err != 0) { 108 ERROR("%s%s critical data (%i)\n", 109 "Failed to ", "record", err); 110 return err; 111 } 112 113 return 0; 114 } 115 116 #if TRUSTED_BOARD_BOOT 117 static int fvp_populate_critical_data(struct fvp_critical_data *critical_data) 118 { 119 char *nv_ctr_oids[MAX_NV_CTR_IDS] = { 120 [TRUSTED_NV_CTR_ID] = TRUSTED_FW_NVCOUNTER_OID, 121 [NON_TRUSTED_NV_CTR_ID] = NON_TRUSTED_FW_NVCOUNTER_OID, 122 }; 123 124 for (int i = 0; i < MAX_NV_CTR_IDS; i++) { 125 int rc = plat_get_nv_ctr(nv_ctr_oids[i], 126 &critical_data->nv_ctr[i]); 127 if (rc != 0) { 128 return rc; 129 } 130 } 131 132 return 0; 133 } 134 #endif /* TRUSTED_BOARD_BOOT */ 135 136 static int fvp_populate_and_measure_critical_data(void) 137 { 138 int rc = 0; 139 140 /* 141 * FVP platform only measures 'platform NV-counter' and hence its 142 * measurement makes sense during Trusted-Boot flow only. 143 */ 144 #if TRUSTED_BOARD_BOOT 145 struct fvp_critical_data populate_critical_data; 146 147 rc = fvp_populate_critical_data(&populate_critical_data); 148 if (rc == 0) { 149 rc = plat_mboot_measure_critical_data(CRITICAL_DATA_ID, 150 &populate_critical_data, 151 sizeof(populate_critical_data)); 152 } 153 #endif /* TRUSTED_BOARD_BOOT */ 154 155 return rc; 156 } 157 158 void bl2_plat_mboot_finish(void) 159 { 160 int rc; 161 162 /* Event Log address in Non-Secure memory */ 163 uintptr_t ns_log_addr; 164 165 /* Event Log filled size */ 166 size_t event_log_cur_size; 167 168 rc = fvp_populate_and_measure_critical_data(); 169 if (rc != 0) { 170 panic(); 171 } 172 173 event_log_cur_size = event_log_get_cur_size((uint8_t *)event_log_base); 174 175 #if defined(SPD_tspd) || defined(SPD_opteed) || defined(SPD_spmd) 176 /* Copy Event Log to TZC secured DRAM memory */ 177 (void)memcpy((void *)ARM_EVENT_LOG_DRAM1_BASE, 178 (const void *)event_log_base, 179 event_log_cur_size); 180 181 /* Ensure that the Event Log is visible in TZC secured DRAM memory */ 182 flush_dcache_range(ARM_EVENT_LOG_DRAM1_BASE, event_log_cur_size); 183 #endif /* defined(SPD_tspd) || defined(SPD_opteed) || defined(SPD_spmd) */ 184 185 rc = arm_set_nt_fw_info( 186 #ifdef SPD_opteed 187 (uintptr_t)ARM_EVENT_LOG_DRAM1_BASE, 188 #endif 189 event_log_cur_size, &ns_log_addr); 190 if (rc != 0) { 191 ERROR("%s(): Unable to update %s_FW_CONFIG\n", 192 __func__, "NT"); 193 /* 194 * It is a fatal error because on FVP secure world software 195 * assumes that a valid event log exists and will use it to 196 * record the measurements into the fTPM. 197 * Note: In FVP platform, OP-TEE uses nt_fw_config to get the 198 * secure Event Log buffer address. 199 */ 200 panic(); 201 } 202 203 /* Copy Event Log to Non-secure memory */ 204 (void)memcpy((void *)ns_log_addr, (const void *)event_log_base, 205 event_log_cur_size); 206 207 /* Ensure that the Event Log is visible in Non-secure memory */ 208 flush_dcache_range(ns_log_addr, event_log_cur_size); 209 210 #if defined(SPD_tspd) || defined(SPD_spmd) 211 /* Set Event Log data in TOS_FW_CONFIG */ 212 rc = arm_set_tos_fw_info((uintptr_t)ARM_EVENT_LOG_DRAM1_BASE, 213 event_log_cur_size); 214 if (rc != 0) { 215 ERROR("%s(): Unable to update %s_FW_CONFIG\n", 216 __func__, "TOS"); 217 panic(); 218 } 219 #endif /* defined(SPD_tspd) || defined(SPD_spmd) */ 220 221 dump_event_log((uint8_t *)event_log_base, event_log_cur_size); 222 } 223