113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/*
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* Copyright (c) 2020-2021, Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef EVENT_LOG_H
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#define EVENT_LOG_H
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#include <stdint.h>
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#include <common/debug.h>
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#include <common/tbbr/tbbr_img_def.h>
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#include <drivers/measured_boot/event_log/tcg.h>
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/*
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* Set Event Log debug level to one of:
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*
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* LOG_LEVEL_ERROR
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* LOG_LEVEL_INFO
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* LOG_LEVEL_WARNING
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* LOG_LEVEL_VERBOSE
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*/
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#if EVENT_LOG_LEVEL == LOG_LEVEL_ERROR
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#define LOG_EVENT ERROR
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#elif EVENT_LOG_LEVEL == LOG_LEVEL_NOTICE
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#define LOG_EVENT NOTICE
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#elif EVENT_LOG_LEVEL == LOG_LEVEL_WARNING
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#define LOG_EVENT WARN
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#elif EVENT_LOG_LEVEL == LOG_LEVEL_INFO
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#define LOG_EVENT INFO
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#elif EVENT_LOG_LEVEL == LOG_LEVEL_VERBOSE
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#define LOG_EVENT VERBOSE
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#else
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#error "Not supported EVENT_LOG_LEVEL"
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#endif
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/* Number of hashing algorithms supported */
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#define HASH_ALG_COUNT 1U
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#define EVLOG_INVALID_ID UINT32_MAX
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#define MEMBER_SIZE(type, member) sizeof(((type *)0)->member)
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/*
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* Each event log entry has some metadata (i.e. a string) that identifies
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* what is measured.These macros define these strings.
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* Note that these strings follow the standardization recommendations
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* defined in the Arm Server Base Security Guide (a.k.a. SBSG, Arm DEN 0086),
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* where applicable. They should not be changed in the code.
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* Where the SBSG does not make recommendations, we are free to choose any
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* naming convention.
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* The key thing is to choose meaningful strings so that when the TPM event
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* log is used in attestation, the different components can be identified.
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*/
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#define EVLOG_BL2_STRING "BL_2"
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#define EVLOG_BL31_STRING "SECURE_RT_EL3"
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#if defined(SPD_opteed)
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#define EVLOG_BL32_STRING "SECURE_RT_EL1_OPTEE"
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#elif defined(SPD_tspd)
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#define EVLOG_BL32_STRING "SECURE_RT_EL1_TSPD"
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#elif defined(SPD_tlkd)
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#define EVLOG_BL32_STRING "SECURE_RT_EL1_TLKD"
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#elif defined(SPD_trusty)
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#define EVLOG_BL32_STRING "SECURE_RT_EL1_TRUSTY"
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#else
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#define EVLOG_BL32_STRING "SECURE_RT_EL1_UNKNOWN"
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#endif
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#define EVLOG_BL32_EXTRA1_STRING "SECURE_RT_EL1_OPTEE_EXTRA1"
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#define EVLOG_BL32_EXTRA2_STRING "SECURE_RT_EL1_OPTEE_EXTRA2"
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#define EVLOG_BL33_STRING "BL_33"
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#define EVLOG_FW_CONFIG_STRING "FW_CONFIG"
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#define EVLOG_HW_CONFIG_STRING "HW_CONFIG"
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#define EVLOG_NT_FW_CONFIG_STRING "NT_FW_CONFIG"
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#define EVLOG_SCP_BL2_STRING "SYS_CTRL_2"
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#define EVLOG_SOC_FW_CONFIG_STRING "SOC_FW_CONFIG"
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#define EVLOG_STM32_STRING "STM32"
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#define EVLOG_TB_FW_CONFIG_STRING "TB_FW_CONFIG"
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#define EVLOG_TOS_FW_CONFIG_STRING "TOS_FW_CONFIG"
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#define EVLOG_RMM_STRING "RMM"
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typedef struct {
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unsigned int id;
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const char *name;
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unsigned int pcr;
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} event_log_metadata_t;
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#define ID_EVENT_SIZE (sizeof(id_event_headers_t) + \
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(sizeof(id_event_algorithm_size_t) * HASH_ALG_COUNT) + \
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sizeof(id_event_struct_data_t))
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#define LOC_EVENT_SIZE (sizeof(event2_header_t) + \
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sizeof(tpmt_ha) + TCG_DIGEST_SIZE + \
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sizeof(event2_data_t) + \
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sizeof(startup_locality_event_t))
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#define LOG_MIN_SIZE (ID_EVENT_SIZE + LOC_EVENT_SIZE)
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#define EVENT2_HDR_SIZE (sizeof(event2_header_t) + \
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sizeof(tpmt_ha) + TCG_DIGEST_SIZE + \
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sizeof(event2_data_t))
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/* Functions' declarations */
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void event_log_init(uint8_t *event_log_start, uint8_t *event_log_finish);
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void event_log_write_header(void);
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void dump_event_log(uint8_t *log_addr, size_t log_size);
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const event_log_metadata_t *plat_event_log_get_metadata(void);
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int event_log_measure_and_record(uintptr_t data_base, uint32_t data_size,
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uint32_t data_id);
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size_t event_log_get_cur_size(uint8_t *event_log_start);
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#endif /* EVENT_LOG_H */
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