104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/*
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* Copyright (c) 2022, Arm Limited. All rights reserved.
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* Copyright (c) 2022, Linaro.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <stdint.h>
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#include <drivers/measured_boot/event_log/event_log.h>
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#include <plat/common/common_def.h>
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#include <tools_share/tbbr_oid.h>
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#include "../common/qemu_private.h"
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/* Event Log data */
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static uint8_t event_log[PLAT_EVENT_LOG_MAX_SIZE];
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static uint64_t event_log_base;
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/* FVP table with platform specific image IDs, names and PCRs */
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const event_log_metadata_t qemu_event_log_metadata[] = {
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{ BL31_IMAGE_ID, EVLOG_BL31_STRING, PCR_0 },
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{ BL32_IMAGE_ID, EVLOG_BL32_STRING, PCR_0 },
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{ BL32_EXTRA1_IMAGE_ID, EVLOG_BL32_EXTRA1_STRING, PCR_0 },
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{ BL32_EXTRA2_IMAGE_ID, EVLOG_BL32_EXTRA2_STRING, PCR_0 },
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{ BL33_IMAGE_ID, EVLOG_BL33_STRING, PCR_0 },
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{ HW_CONFIG_ID, EVLOG_HW_CONFIG_STRING, PCR_0 },
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{ NT_FW_CONFIG_ID, EVLOG_NT_FW_CONFIG_STRING, PCR_0 },
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{ SCP_BL2_IMAGE_ID, EVLOG_SCP_BL2_STRING, PCR_0 },
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{ SOC_FW_CONFIG_ID, EVLOG_SOC_FW_CONFIG_STRING, PCR_0 },
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{ TOS_FW_CONFIG_ID, EVLOG_TOS_FW_CONFIG_STRING, PCR_0 },
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{ EVLOG_INVALID_ID, NULL, (unsigned int)(-1) } /* Terminator */
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};
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void bl2_plat_mboot_init(void)
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{
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/*
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* Here we assume that BL1/ROM code doesn't have the driver
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* to measure the BL2 code which is a common case for
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* already existing platforms
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*/
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event_log_init(event_log, event_log + sizeof(event_log));
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event_log_write_header();
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/*
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* TBD - Add code to do self measurement of BL2 code and add an
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* event for BL2 measurement
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*/
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event_log_base = (uintptr_t)event_log;
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}
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void bl2_plat_mboot_finish(void)
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{
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int rc;
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/* Event Log address in Non-Secure memory */
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uintptr_t ns_log_addr;
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/* Event Log filled size */
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size_t event_log_cur_size;
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event_log_cur_size = event_log_get_cur_size((uint8_t *)event_log_base);
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rc = qemu_set_nt_fw_info(
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#ifdef SPD_opteed
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(uintptr_t)event_log_base,
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#endif
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event_log_cur_size, &ns_log_addr);
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if (rc != 0) {
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ERROR("%s(): Unable to update %s_FW_CONFIG\n",
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__func__, "NT");
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/*
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* It is a fatal error because on QEMU secure world software
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* assumes that a valid event log exists and will use it to
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* record the measurements into the fTPM or sw-tpm.
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* Note: In QEMU platform, OP-TEE uses nt_fw_config to get the
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* secure Event Log buffer address.
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*/
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panic();
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}
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/* Copy Event Log to Non-secure memory */
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(void)memcpy((void *)ns_log_addr, (const void *)event_log_base,
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event_log_cur_size);
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/* Ensure that the Event Log is visible in Non-secure memory */
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flush_dcache_range(ns_log_addr, event_log_cur_size);
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#if defined(SPD_tspd) || defined(SPD_spmd)
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/* Set Event Log data in TOS_FW_CONFIG */
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rc = qemu_set_tos_fw_info((uintptr_t)event_log_base,
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event_log_cur_size);
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if (rc != 0) {
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ERROR("%s(): Unable to update %s_FW_CONFIG\n",
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__func__, "TOS");
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panic();
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}
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#endif /* defined(SPD_tspd) || defined(SPD_spmd) */
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dump_event_log((uint8_t *)event_log_base, event_log_cur_size);
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}
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