1 /* 2 * Copyright (c) 2020-2024, Arm Limited. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef EVENT_LOG_H 8 #define EVENT_LOG_H 9 10 #include <stdint.h> 11 12 #include <common/debug.h> 13 #include <common/tbbr/tbbr_img_def.h> 14 #include <drivers/auth/crypto_mod.h> 15 #include <drivers/measured_boot/event_log/tcg.h> 16 17 /* 18 * Set Event Log debug level to one of: 19 * 20 * LOG_LEVEL_ERROR 21 * LOG_LEVEL_INFO 22 * LOG_LEVEL_WARNING 23 * LOG_LEVEL_VERBOSE 24 */ 25 #if EVENT_LOG_LEVEL == LOG_LEVEL_ERROR 26 #define LOG_EVENT ERROR 27 #elif EVENT_LOG_LEVEL == LOG_LEVEL_NOTICE 28 #define LOG_EVENT NOTICE 29 #elif EVENT_LOG_LEVEL == LOG_LEVEL_WARNING 30 #define LOG_EVENT WARN 31 #elif EVENT_LOG_LEVEL == LOG_LEVEL_INFO 32 #define LOG_EVENT INFO 33 #elif EVENT_LOG_LEVEL == LOG_LEVEL_VERBOSE 34 #define LOG_EVENT VERBOSE 35 #else 36 #error "Not supported EVENT_LOG_LEVEL" 37 #endif 38 39 /* Number of hashing algorithms supported */ 40 #define HASH_ALG_COUNT 1U 41 42 #define EVLOG_INVALID_ID UINT32_MAX 43 44 #define MEMBER_SIZE(type, member) sizeof(((type *)0)->member) 45 46 typedef struct { 47 unsigned int id; 48 const char *name; 49 unsigned int pcr; 50 } event_log_metadata_t; 51 52 #define ID_EVENT_SIZE (sizeof(id_event_headers_t) + \ 53 (sizeof(id_event_algorithm_size_t) * HASH_ALG_COUNT) + \ 54 sizeof(id_event_struct_data_t)) 55 56 #define LOC_EVENT_SIZE (sizeof(event2_header_t) + \ 57 sizeof(tpmt_ha) + TCG_DIGEST_SIZE + \ 58 sizeof(event2_data_t) + \ 59 sizeof(startup_locality_event_t)) 60 61 #define LOG_MIN_SIZE (ID_EVENT_SIZE + LOC_EVENT_SIZE) 62 63 #define EVENT2_HDR_SIZE (sizeof(event2_header_t) + \ 64 sizeof(tpmt_ha) + TCG_DIGEST_SIZE + \ 65 sizeof(event2_data_t)) 66 67 /* Functions' declarations */ 68 void event_log_buf_init(uint8_t *event_log_start, uint8_t *event_log_finish); 69 void event_log_init(uint8_t *event_log_start, uint8_t *event_log_finish); 70 void event_log_write_specid_event(void); 71 void event_log_write_header(void); 72 void dump_event_log(uint8_t *log_addr, size_t log_size); 73 int event_log_measure(uintptr_t data_base, uint32_t data_size, 74 unsigned char hash_data[CRYPTO_MD_MAX_SIZE]); 75 void event_log_record(const uint8_t *hash, uint32_t event_type, 76 const event_log_metadata_t *metadata_ptr); 77 int event_log_measure_and_record(uintptr_t data_base, uint32_t data_size, 78 uint32_t data_id, 79 const event_log_metadata_t *metadata_ptr); 80 size_t event_log_get_cur_size(uint8_t *event_log_start); 81 82 #endif /* EVENT_LOG_H */ 83