blob: 122bb23b14d42147aac85b9cae7a88a85626e414 [file] [log] [blame]
/*
* Copyright (c) 2022, Arm Limited. All rights reserved.
* Copyright (c) 2022, Linaro.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdint.h>
#include <drivers/measured_boot/event_log/event_log.h>
#include <plat/common/common_def.h>
#include <plat/common/platform.h>
#include <tools_share/tbbr_oid.h>
#include "../common/qemu_private.h"
/* Event Log data */
static uint8_t event_log[PLAT_EVENT_LOG_MAX_SIZE];
static uint64_t event_log_base;
/* QEMU table with platform specific image IDs, names and PCRs */
static const event_log_metadata_t qemu_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 },
{ EVLOG_INVALID_ID, NULL, (unsigned int)(-1) } /* Terminator */
};
void bl2_plat_mboot_init(void)
{
/*
* Here we assume that BL1/ROM code doesn't have the driver
* to measure the BL2 code which is a common case for
* already existing platforms
*/
event_log_init(event_log, event_log + sizeof(event_log));
event_log_write_header();
/*
* TBD - Add code to do self measurement of BL2 code and add an
* event for BL2 measurement
*/
event_log_base = (uintptr_t)event_log;
}
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 = qemu_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 QEMU secure world software
* assumes that a valid event log exists and will use it to
* record the measurements into the fTPM or sw-tpm.
* Note: In QEMU 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 = qemu_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);
}
int plat_mboot_measure_image(unsigned int image_id, image_info_t *image_data)
{
/* Calculate image hash and record data in Event Log */
int err = event_log_measure_and_record(image_data->image_base,
image_data->image_size,
image_id,
qemu_event_log_metadata);
if (err != 0) {
ERROR("%s%s image id %u (%i)\n",
"Failed to ", "record", image_id, err);
return err;
}
return 0;
}