mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
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7f8589cdba
Changes all occurrences of "RSS" and "rss" in the code and build files to "RSE" and "rse". Signed-off-by: Tamas Ban <tamas.ban@arm.com> Change-Id: Idec0bf7a90ae381f5bc968e1bb167daace24a11f
138 lines
3.6 KiB
C
138 lines
3.6 KiB
C
/*
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* Copyright (c) 2024, 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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#include <stdint.h>
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#include <common/debug.h>
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#include <drivers/arm/css/sds.h>
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#include <drivers/arm/rse_comms.h>
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#include <drivers/delay_timer.h>
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#include <drivers/generic_delay_timer.h>
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#include <drivers/measured_boot/metadata.h>
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#include <drivers/measured_boot/rse/dice_prot_env.h>
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#include <plat/arm/common/plat_arm.h>
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#include <plat/common/platform.h>
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#include <platform_def.h>
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#include <tools_share/zero_oid.h>
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#include "tc_dpe_cert.h"
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struct dpe_metadata tc_dpe_metadata[] = {
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{
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.id = FW_CONFIG_ID,
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.cert_id = DPE_AP_FW_CERT_ID,
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.signer_id_size = SIGNER_ID_MIN_SIZE,
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.sw_type = MBOOT_FW_CONFIG_STRING,
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.allow_new_context_to_derive = false,
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.retain_parent_context = true,
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.create_certificate = false,
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.pk_oid = ZERO_OID },
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{
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.id = TB_FW_CONFIG_ID,
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.cert_id = DPE_AP_FW_CERT_ID,
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.signer_id_size = SIGNER_ID_MIN_SIZE,
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.sw_type = MBOOT_TB_FW_CONFIG_STRING,
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.allow_new_context_to_derive = false,
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.retain_parent_context = true,
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.create_certificate = false,
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.pk_oid = ZERO_OID },
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{
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.id = BL2_IMAGE_ID,
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.cert_id = DPE_AP_FW_CERT_ID,
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.signer_id_size = SIGNER_ID_MIN_SIZE,
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.sw_type = MBOOT_BL2_IMAGE_STRING,
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.allow_new_context_to_derive = true,
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.retain_parent_context = false,
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.create_certificate = false,
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.pk_oid = ZERO_OID },
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{
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.id = DPE_INVALID_ID }
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};
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/* Effective timeout of 10000 ms */
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#define RSE_DPE_BOOT_10US_RETRIES 1000000
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#define TC2_SDS_DPE_CTX_HANDLE_STRUCT_ID 0x0000000A
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/* Context handle is meant to be used by BL2. Sharing it via TB_FW_CONFIG */
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static int new_ctx_handle;
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void plat_dpe_share_context_handle(int *ctx_handle)
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{
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new_ctx_handle = *ctx_handle;
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}
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void plat_dpe_get_context_handle(int *ctx_handle)
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{
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int retry = RSE_DPE_BOOT_10US_RETRIES;
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int ret;
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/* Initialize System level generic or SP804 timer */
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generic_delay_timer_init();
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/* Check the initialization of the Shared Data Storage area between RSE
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* and AP. Since AP_BL1 is executed first then a bit later the RSE
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* runtime, which initialize this area, therefore AP needs to check it
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* in a loop until it gets written by RSE Secure Runtime.
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*/
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VERBOSE("Waiting for DPE service initialization in RSE Secure Runtime\n");
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while (retry > 0) {
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ret = sds_init(SDS_RSE_AP_REGION_ID);
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if (ret != SDS_OK) {
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udelay(10);
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retry--;
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} else {
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break;
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}
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}
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if (retry == 0) {
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ERROR("DPE init timeout\n");
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plat_panic_handler();
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} else {
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VERBOSE("DPE init succeeded in %dms.\n",
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(RSE_DPE_BOOT_10US_RETRIES - retry) / 100);
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}
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/* TODO: call this in a loop to avoid reading unfinished data */
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ret = sds_struct_read(SDS_RSE_AP_REGION_ID,
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TC2_SDS_DPE_CTX_HANDLE_STRUCT_ID,
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0,
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ctx_handle,
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sizeof(*ctx_handle),
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SDS_ACCESS_MODE_NON_CACHED);
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if (ret != SDS_OK) {
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ERROR("Unable to get DPE context handle from SDS area\n");
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plat_panic_handler();
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}
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VERBOSE("Received DPE context handle: 0x%x\n", *ctx_handle);
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}
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void bl1_plat_mboot_init(void)
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{
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/* Initialize the communication channel between AP and RSE */
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(void)rse_comms_init(PLAT_RSE_AP_SND_MHU_BASE,
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PLAT_RSE_AP_RCV_MHU_BASE);
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dpe_init(tc_dpe_metadata);
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}
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void bl1_plat_mboot_finish(void)
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{
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int rc;
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VERBOSE("Share DPE context handle with BL2: 0x%x\n", new_ctx_handle);
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rc = arm_set_tb_fw_info(&new_ctx_handle);
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if (rc != 0) {
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ERROR("Unable to set DPE context handle in TB_FW_CONFIG\n");
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/*
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* It is a fatal error because on TC platform, BL2 software
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* assumes that a valid DPE context_handle is passed through
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* the DTB object by BL1.
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*/
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plat_panic_handler();
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}
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}
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