blob: 5ebfedea0e6e2f89d60b28aaadf64212b4937301 [file] [log] [blame]
/*
* Copyright (c) 2021, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdint.h>
#include <drivers/measured_boot/event_log/event_log.h>
#include <plat/arm/common/plat_arm.h>
/* Event Log data */
static uint64_t event_log_base;
/* FVP table with platform specific image IDs, names and PCRs */
const event_log_metadata_t fvp_event_log_metadata[] = {
{ BL31_IMAGE_ID, EVLOG_BL31_STRING, PCR_0 },
{ BL32_IMAGE_ID, EVLOG_BL32_STRING, PCR_0 },
{ BL32_EXTRA1_IMAGE_ID, EVLOG_BL32_EXTRA1_STRING, PCR_0 },
{ BL32_EXTRA2_IMAGE_ID, EVLOG_BL32_EXTRA2_STRING, PCR_0 },
{ BL33_IMAGE_ID, EVLOG_BL33_STRING, PCR_0 },
{ HW_CONFIG_ID, EVLOG_HW_CONFIG_STRING, PCR_0 },
{ NT_FW_CONFIG_ID, EVLOG_NT_FW_CONFIG_STRING, PCR_0 },
{ SCP_BL2_IMAGE_ID, EVLOG_SCP_BL2_STRING, PCR_0 },
{ SOC_FW_CONFIG_ID, EVLOG_SOC_FW_CONFIG_STRING, PCR_0 },
{ TOS_FW_CONFIG_ID, EVLOG_TOS_FW_CONFIG_STRING, PCR_0 },
{ INVALID_ID, NULL, (unsigned int)(-1) } /* Terminator */
};
void bl2_plat_mboot_init(void)
{
uint8_t *event_log_start;
uint8_t *event_log_finish;
size_t bl1_event_log_size;
int rc;
rc = arm_get_tb_fw_info(&event_log_base, &bl1_event_log_size);
if (rc != 0) {
ERROR("%s(): Unable to get Event Log info from TB_FW_CONFIG\n",
__func__);
/*
* It is a fatal error because on FVP platform, BL2 software
* assumes that a valid Event Log buffer exist and it will use
* same Event Log buffer to append image measurements.
*/
panic();
}
/*
* BL1 and BL2 share the same Event Log buffer and that BL2 will
* append its measurements after BL1's
*/
event_log_start = (uint8_t *)((uintptr_t)event_log_base +
bl1_event_log_size);
event_log_finish = (uint8_t *)((uintptr_t)event_log_base +
PLAT_ARM_EVENT_LOG_MAX_SIZE);
event_log_init((uint8_t *)event_log_start, event_log_finish);
}
void bl2_plat_mboot_finish(void)
{
int rc;
/* Event Log address in Non-Secure memory */
uintptr_t ns_log_addr;
/* Event Log filled size */
size_t event_log_cur_size;
event_log_cur_size = event_log_get_cur_size((uint8_t *)event_log_base);
rc = arm_set_nt_fw_info(
#ifdef SPD_opteed
(uintptr_t)event_log_base,
#endif
event_log_cur_size, &ns_log_addr);
if (rc != 0) {
ERROR("%s(): Unable to update %s_FW_CONFIG\n",
__func__, "NT");
/*
* It is a fatal error because on FVP secure world software
* assumes that a valid event log exists and will use it to
* record the measurements into the fTPM.
* Note: In FVP platform, OP-TEE uses nt_fw_config to get the
* secure Event Log buffer address.
*/
panic();
}
/* Copy Event Log to Non-secure memory */
(void)memcpy((void *)ns_log_addr, (const void *)event_log_base,
event_log_cur_size);
/* Ensure that the Event Log is visible in Non-secure memory */
flush_dcache_range(ns_log_addr, event_log_cur_size);
#if defined(SPD_tspd) || defined(SPD_spmd)
/* Set Event Log data in TOS_FW_CONFIG */
rc = arm_set_tos_fw_info((uintptr_t)event_log_base,
event_log_cur_size);
if (rc != 0) {
ERROR("%s(): Unable to update %s_FW_CONFIG\n",
__func__, "TOS");
panic();
}
#endif /* defined(SPD_tspd) || defined(SPD_spmd) */
dump_event_log((uint8_t *)event_log_base, event_log_cur_size);
}