1 /* 2 * Copyright (c) 2025, Arm Limited. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 #include <stdarg.h> 9 #include <stdint.h> 10 11 #include "./include/rpi3_measured_boot.h" 12 13 #include <drivers/auth/crypto_mod.h> 14 #include <drivers/measured_boot/event_log/event_log.h> 15 #include <drivers/measured_boot/metadata.h> 16 #include <plat/common/common_def.h> 17 #include <plat/common/platform.h> 18 #include <platform_def.h> 19 #include <tools_share/tbbr_oid.h> 20 21 /* RPI3 table with platform specific image IDs, names and PCRs */ 22 const event_log_metadata_t rpi3_event_log_metadata[] = { 23 { BL31_IMAGE_ID, MBOOT_BL31_IMAGE_STRING, PCR_0 }, 24 { BL33_IMAGE_ID, MBOOT_BL33_IMAGE_STRING, PCR_0 }, 25 { NT_FW_CONFIG_ID, MBOOT_NT_FW_CONFIG_STRING, PCR_0 }, 26 27 { EVLOG_INVALID_ID, NULL, (unsigned int)(-1) } /* Terminator */ 28 }; 29 30 static uint8_t *event_log_start; 31 static size_t event_log_size; 32 33 void bl2_plat_mboot_init(void) 34 { 35 uint8_t *bl2_event_log_start; 36 uint8_t *bl2_event_log_finish; 37 38 rpi3_mboot_fetch_eventlog_info(&event_log_start, &event_log_size); 39 bl2_event_log_start = event_log_start + event_log_size; 40 bl2_event_log_finish = event_log_start + PLAT_ARM_EVENT_LOG_MAX_SIZE; 41 event_log_init(bl2_event_log_start, bl2_event_log_finish); 42 } 43 44 void bl2_plat_mboot_finish(void) 45 { 46 /* Event Log filled size */ 47 size_t event_log_cur_size; 48 49 event_log_cur_size = event_log_get_cur_size((uint8_t *)event_log_start); 50 51 /* Dump Event Log for user view */ 52 dump_event_log((uint8_t *)event_log_start, event_log_cur_size); 53 } 54 55 int plat_mboot_measure_image(unsigned int image_id, image_info_t *image_data) 56 { 57 int rc = 0; 58 59 unsigned char hash_data[CRYPTO_MD_MAX_SIZE]; 60 const event_log_metadata_t *metadata_ptr = rpi3_event_log_metadata; 61 62 /* Measure the payload with algorithm selected by EventLog driver */ 63 rc = event_log_measure(image_data->image_base, image_data->image_size, hash_data); 64 if (rc != 0) { 65 return rc; 66 } 67 68 while ((metadata_ptr->id != EVLOG_INVALID_ID) && 69 (metadata_ptr->id != image_id)) { 70 metadata_ptr++; 71 } 72 assert(metadata_ptr->id != EVLOG_INVALID_ID); 73 74 event_log_record(hash_data, EV_POST_CODE, metadata_ptr); 75 76 return rc; 77 } 78