1*91f16700Schasinglulu /* 2*91f16700Schasinglulu * Copyright (c) 2022-2023, Arm Limited. All rights reserved. 3*91f16700Schasinglulu * Copyright (c) 2022, Linaro. 4*91f16700Schasinglulu * 5*91f16700Schasinglulu * SPDX-License-Identifier: BSD-3-Clause 6*91f16700Schasinglulu */ 7*91f16700Schasinglulu 8*91f16700Schasinglulu #include <string.h> 9*91f16700Schasinglulu 10*91f16700Schasinglulu #include "./include/imx8m_measured_boot.h" 11*91f16700Schasinglulu #include <drivers/measured_boot/event_log/event_log.h> 12*91f16700Schasinglulu #include <plat/arm/common/plat_arm.h> 13*91f16700Schasinglulu 14*91f16700Schasinglulu /* Event Log data */ 15*91f16700Schasinglulu static uint8_t event_log[PLAT_IMX_EVENT_LOG_MAX_SIZE]; 16*91f16700Schasinglulu 17*91f16700Schasinglulu /* FVP table with platform specific image IDs, names and PCRs */ 18*91f16700Schasinglulu static const event_log_metadata_t imx8m_event_log_metadata[] = { 19*91f16700Schasinglulu { BL31_IMAGE_ID, EVLOG_BL31_STRING, PCR_0 }, 20*91f16700Schasinglulu { BL32_IMAGE_ID, EVLOG_BL32_STRING, PCR_0 }, 21*91f16700Schasinglulu { BL32_EXTRA1_IMAGE_ID, EVLOG_BL32_EXTRA1_STRING, PCR_0 }, 22*91f16700Schasinglulu { BL32_EXTRA2_IMAGE_ID, EVLOG_BL32_EXTRA2_STRING, PCR_0 }, 23*91f16700Schasinglulu { BL33_IMAGE_ID, EVLOG_BL33_STRING, PCR_0 }, 24*91f16700Schasinglulu { EVLOG_INVALID_ID, NULL, (unsigned int)(-1) } /* Terminator */ 25*91f16700Schasinglulu }; 26*91f16700Schasinglulu 27*91f16700Schasinglulu int plat_mboot_measure_image(unsigned int image_id, image_info_t *image_data) 28*91f16700Schasinglulu { 29*91f16700Schasinglulu /* Calculate image hash and record data in Event Log */ 30*91f16700Schasinglulu int err = event_log_measure_and_record(image_data->image_base, 31*91f16700Schasinglulu image_data->image_size, 32*91f16700Schasinglulu image_id, 33*91f16700Schasinglulu imx8m_event_log_metadata); 34*91f16700Schasinglulu if (err != 0) { 35*91f16700Schasinglulu ERROR("%s%s image id %u (%i)\n", 36*91f16700Schasinglulu "Failed to ", "record", image_id, err); 37*91f16700Schasinglulu return err; 38*91f16700Schasinglulu } 39*91f16700Schasinglulu 40*91f16700Schasinglulu return 0; 41*91f16700Schasinglulu } 42*91f16700Schasinglulu 43*91f16700Schasinglulu void bl2_plat_mboot_init(void) 44*91f16700Schasinglulu { 45*91f16700Schasinglulu event_log_init(event_log, event_log + sizeof(event_log)); 46*91f16700Schasinglulu event_log_write_header(); 47*91f16700Schasinglulu } 48*91f16700Schasinglulu 49*91f16700Schasinglulu void bl2_plat_mboot_finish(void) 50*91f16700Schasinglulu { 51*91f16700Schasinglulu int rc = 0; 52*91f16700Schasinglulu 53*91f16700Schasinglulu /* Event Log address in Non-Secure memory */ 54*91f16700Schasinglulu uintptr_t ns_log_addr; 55*91f16700Schasinglulu 56*91f16700Schasinglulu /* Event Log filled size */ 57*91f16700Schasinglulu size_t event_log_cur_size; 58*91f16700Schasinglulu 59*91f16700Schasinglulu event_log_cur_size = event_log_get_cur_size(event_log); 60*91f16700Schasinglulu 61*91f16700Schasinglulu rc = imx8m_set_nt_fw_info(event_log_cur_size, &ns_log_addr); 62*91f16700Schasinglulu if (rc != 0) { 63*91f16700Schasinglulu ERROR("%s(): Unable to update %s_FW_CONFIG\n", 64*91f16700Schasinglulu __func__, "NT"); 65*91f16700Schasinglulu /* 66*91f16700Schasinglulu * It is a fatal error because on i.MX U-boot assumes that 67*91f16700Schasinglulu * a valid event log exists and will use it to record the 68*91f16700Schasinglulu * measurements into the fTPM. 69*91f16700Schasinglulu */ 70*91f16700Schasinglulu panic(); 71*91f16700Schasinglulu } 72*91f16700Schasinglulu 73*91f16700Schasinglulu /* Copy Event Log to Non-secure memory */ 74*91f16700Schasinglulu (void)memcpy((void *)ns_log_addr, (const void *)event_log, 75*91f16700Schasinglulu event_log_cur_size); 76*91f16700Schasinglulu 77*91f16700Schasinglulu /* Ensure that the Event Log is visible in Non-secure memory */ 78*91f16700Schasinglulu flush_dcache_range(ns_log_addr, event_log_cur_size); 79*91f16700Schasinglulu 80*91f16700Schasinglulu dump_event_log((uint8_t *)event_log, event_log_cur_size); 81*91f16700Schasinglulu } 82*91f16700Schasinglulu 83*91f16700Schasinglulu int plat_mboot_measure_key(const void *pk_oid, const void *pk_ptr, 84*91f16700Schasinglulu size_t pk_len) 85*91f16700Schasinglulu { 86*91f16700Schasinglulu return 0; 87*91f16700Schasinglulu } 88