1 /* 2 * Copyright (c) 2021-2023, 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/rss/rss_measured_boot.h> 12 #include <tools_share/tbbr_oid.h> 13 #include <fvp_critical_data.h> 14 15 #include <plat/arm/common/plat_arm.h> 16 #include <plat/common/common_def.h> 17 18 #if defined(SPD_tspd) || defined(SPD_opteed) || defined(SPD_spmd) 19 CASSERT(ARM_EVENT_LOG_DRAM1_SIZE >= PLAT_ARM_EVENT_LOG_MAX_SIZE, \ 20 assert_res_eventlog_mem_insufficient); 21 #endif /* defined(SPD_tspd) || defined(SPD_opteed) || defined(SPD_spmd) */ 22 23 /* Event Log data */ 24 static uint64_t event_log_base; 25 26 /* FVP table with platform specific image IDs, names and PCRs */ 27 const event_log_metadata_t fvp_event_log_metadata[] = { 28 { BL31_IMAGE_ID, EVLOG_BL31_STRING, PCR_0 }, 29 { BL32_IMAGE_ID, EVLOG_BL32_STRING, PCR_0 }, 30 { BL32_EXTRA1_IMAGE_ID, EVLOG_BL32_EXTRA1_STRING, PCR_0 }, 31 { BL32_EXTRA2_IMAGE_ID, EVLOG_BL32_EXTRA2_STRING, PCR_0 }, 32 { BL33_IMAGE_ID, EVLOG_BL33_STRING, PCR_0 }, 33 { HW_CONFIG_ID, EVLOG_HW_CONFIG_STRING, PCR_0 }, 34 { NT_FW_CONFIG_ID, EVLOG_NT_FW_CONFIG_STRING, PCR_0 }, 35 { SCP_BL2_IMAGE_ID, EVLOG_SCP_BL2_STRING, PCR_0 }, 36 { SOC_FW_CONFIG_ID, EVLOG_SOC_FW_CONFIG_STRING, PCR_0 }, 37 { TOS_FW_CONFIG_ID, EVLOG_TOS_FW_CONFIG_STRING, PCR_0 }, 38 { RMM_IMAGE_ID, EVLOG_RMM_STRING, PCR_0}, 39 40 #if defined(SPD_spmd) 41 { SP_PKG1_ID, EVLOG_SP1_STRING, PCR_0 }, 42 { SP_PKG2_ID, EVLOG_SP2_STRING, PCR_0 }, 43 { SP_PKG3_ID, EVLOG_SP3_STRING, PCR_0 }, 44 { SP_PKG4_ID, EVLOG_SP4_STRING, PCR_0 }, 45 { SP_PKG5_ID, EVLOG_SP5_STRING, PCR_0 }, 46 { SP_PKG6_ID, EVLOG_SP6_STRING, PCR_0 }, 47 { SP_PKG7_ID, EVLOG_SP7_STRING, PCR_0 }, 48 { SP_PKG8_ID, EVLOG_SP8_STRING, PCR_0 }, 49 #endif 50 51 { CRITICAL_DATA_ID, EVLOG_CRITICAL_DATA_STRING, PCR_1 }, 52 53 { EVLOG_INVALID_ID, NULL, (unsigned int)(-1) } /* Terminator */ 54 }; 55 56 /* FVP table with platform specific image IDs and metadata. Intentionally not a 57 * const struct, some members might set by bootloaders during trusted boot. 58 */ 59 struct rss_mboot_metadata fvp_rss_mboot_metadata[] = { 60 { 61 .id = BL31_IMAGE_ID, 62 .slot = U(9), 63 .signer_id_size = SIGNER_ID_MIN_SIZE, 64 .sw_type = RSS_MBOOT_BL31_STRING, 65 .lock_measurement = true }, 66 { 67 .id = HW_CONFIG_ID, 68 .slot = U(10), 69 .signer_id_size = SIGNER_ID_MIN_SIZE, 70 .sw_type = RSS_MBOOT_HW_CONFIG_STRING, 71 .lock_measurement = true }, 72 { 73 .id = SOC_FW_CONFIG_ID, 74 .slot = U(11), 75 .signer_id_size = SIGNER_ID_MIN_SIZE, 76 .sw_type = RSS_MBOOT_SOC_FW_CONFIG_STRING, 77 .lock_measurement = true }, 78 { 79 .id = RMM_IMAGE_ID, 80 .slot = U(12), 81 .signer_id_size = SIGNER_ID_MIN_SIZE, 82 .sw_type = RSS_MBOOT_RMM_STRING, 83 .lock_measurement = true }, 84 { 85 .id = RSS_MBOOT_INVALID_ID } 86 }; 87 88 void bl2_plat_mboot_init(void) 89 { 90 uint8_t *event_log_start; 91 uint8_t *event_log_finish; 92 size_t bl1_event_log_size; 93 size_t event_log_max_size; 94 int rc; 95 96 rc = arm_get_tb_fw_info(&event_log_base, &bl1_event_log_size, 97 &event_log_max_size); 98 if (rc != 0) { 99 ERROR("%s(): Unable to get Event Log info from TB_FW_CONFIG\n", 100 __func__); 101 /* 102 * It is a fatal error because on FVP platform, BL2 software 103 * assumes that a valid Event Log buffer exist and it will use 104 * same Event Log buffer to append image measurements. 105 */ 106 panic(); 107 } 108 109 /* 110 * BL1 and BL2 share the same Event Log buffer and that BL2 will 111 * append its measurements after BL1's 112 */ 113 event_log_start = (uint8_t *)((uintptr_t)event_log_base + 114 bl1_event_log_size); 115 event_log_finish = (uint8_t *)((uintptr_t)event_log_base + 116 event_log_max_size); 117 118 event_log_init((uint8_t *)event_log_start, event_log_finish); 119 120 rss_measured_boot_init(); 121 } 122 123 int plat_mboot_measure_critical_data(unsigned int critical_data_id, 124 const void *base, size_t size) 125 { 126 /* 127 * It is very unlikely that the critical data size would be 128 * bigger than 2^32 bytes 129 */ 130 assert(size < UINT32_MAX); 131 assert(base != NULL); 132 133 /* Calculate image hash and record data in Event Log */ 134 int err = event_log_measure_and_record((uintptr_t)base, (uint32_t)size, 135 critical_data_id, 136 fvp_event_log_metadata); 137 if (err != 0) { 138 ERROR("%s%s critical data (%i)\n", 139 "Failed to ", "record", err); 140 return err; 141 } 142 143 return 0; 144 } 145 146 #if TRUSTED_BOARD_BOOT 147 static int fvp_populate_critical_data(struct fvp_critical_data *critical_data) 148 { 149 char *nv_ctr_oids[MAX_NV_CTR_IDS] = { 150 [TRUSTED_NV_CTR_ID] = TRUSTED_FW_NVCOUNTER_OID, 151 [NON_TRUSTED_NV_CTR_ID] = NON_TRUSTED_FW_NVCOUNTER_OID, 152 }; 153 154 for (int i = 0; i < MAX_NV_CTR_IDS; i++) { 155 int rc = plat_get_nv_ctr(nv_ctr_oids[i], 156 &critical_data->nv_ctr[i]); 157 if (rc != 0) { 158 return rc; 159 } 160 } 161 162 return 0; 163 } 164 #endif /* TRUSTED_BOARD_BOOT */ 165 166 static int fvp_populate_and_measure_critical_data(void) 167 { 168 int rc = 0; 169 170 /* 171 * FVP platform only measures 'platform NV-counter' and hence its 172 * measurement makes sense during Trusted-Boot flow only. 173 */ 174 #if TRUSTED_BOARD_BOOT 175 struct fvp_critical_data populate_critical_data; 176 177 rc = fvp_populate_critical_data(&populate_critical_data); 178 if (rc == 0) { 179 rc = plat_mboot_measure_critical_data(CRITICAL_DATA_ID, 180 &populate_critical_data, 181 sizeof(populate_critical_data)); 182 } 183 #endif /* TRUSTED_BOARD_BOOT */ 184 185 return rc; 186 } 187 188 void bl2_plat_mboot_finish(void) 189 { 190 int rc; 191 192 /* Event Log address in Non-Secure memory */ 193 uintptr_t ns_log_addr; 194 195 /* Event Log filled size */ 196 size_t event_log_cur_size; 197 198 rc = fvp_populate_and_measure_critical_data(); 199 if (rc != 0) { 200 panic(); 201 } 202 203 event_log_cur_size = event_log_get_cur_size((uint8_t *)event_log_base); 204 205 #if defined(SPD_tspd) || defined(SPD_opteed) || defined(SPD_spmd) 206 /* Copy Event Log to TZC secured DRAM memory */ 207 (void)memcpy((void *)ARM_EVENT_LOG_DRAM1_BASE, 208 (const void *)event_log_base, 209 event_log_cur_size); 210 211 /* Ensure that the Event Log is visible in TZC secured DRAM memory */ 212 flush_dcache_range(ARM_EVENT_LOG_DRAM1_BASE, event_log_cur_size); 213 #endif /* defined(SPD_tspd) || defined(SPD_opteed) || defined(SPD_spmd) */ 214 215 rc = arm_set_nt_fw_info( 216 #ifdef SPD_opteed 217 (uintptr_t)ARM_EVENT_LOG_DRAM1_BASE, 218 #endif 219 event_log_cur_size, &ns_log_addr); 220 if (rc != 0) { 221 ERROR("%s(): Unable to update %s_FW_CONFIG\n", 222 __func__, "NT"); 223 /* 224 * It is a fatal error because on FVP secure world software 225 * assumes that a valid event log exists and will use it to 226 * record the measurements into the fTPM. 227 * Note: In FVP platform, OP-TEE uses nt_fw_config to get the 228 * secure Event Log buffer address. 229 */ 230 panic(); 231 } 232 233 /* Copy Event Log to Non-secure memory */ 234 (void)memcpy((void *)ns_log_addr, (const void *)event_log_base, 235 event_log_cur_size); 236 237 /* Ensure that the Event Log is visible in Non-secure memory */ 238 flush_dcache_range(ns_log_addr, event_log_cur_size); 239 240 #if defined(SPD_tspd) || defined(SPD_spmd) 241 /* Set Event Log data in TOS_FW_CONFIG */ 242 rc = arm_set_tos_fw_info((uintptr_t)ARM_EVENT_LOG_DRAM1_BASE, 243 event_log_cur_size); 244 if (rc != 0) { 245 ERROR("%s(): Unable to update %s_FW_CONFIG\n", 246 __func__, "TOS"); 247 panic(); 248 } 249 #endif /* defined(SPD_tspd) || defined(SPD_spmd) */ 250 251 dump_event_log((uint8_t *)event_log_base, event_log_cur_size); 252 } 253