110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
/*
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* Copyright (c) 2018, ARM Limited and Contributors. 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 <arm_dyn_cfg_helpers.h>
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#include <assert.h>
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#include <debug.h>
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#include <desc_image_load.h>
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#include <plat_arm.h>
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#include <platform.h>
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#include <platform_def.h>
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#include <string.h>
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#include <tbbr_img_def.h>
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#if LOAD_IMAGE_V2
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/* Variable to store the address to TB_FW_CONFIG passed from BL1 */
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static void *tb_fw_cfg_dtb;
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/*
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* Helper function to load TB_FW_CONFIG and populate the load information to
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* arg0 of BL2 entrypoint info.
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*/
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void arm_load_tb_fw_config(void)
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{
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int err;
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uintptr_t config_base = 0;
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image_desc_t *image_desc;
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image_desc_t arm_tb_fw_info = {
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.image_id = TB_FW_CONFIG_ID,
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SET_STATIC_PARAM_HEAD(image_info, PARAM_IMAGE_BINARY,
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VERSION_2, image_info_t, 0),
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.image_info.image_base = ARM_TB_FW_CONFIG_BASE,
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.image_info.image_max_size = ARM_TB_FW_CONFIG_LIMIT - ARM_TB_FW_CONFIG_BASE,
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};
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VERBOSE("BL1: Loading TB_FW_CONFIG\n");
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err = load_auth_image(TB_FW_CONFIG_ID, &arm_tb_fw_info.image_info);
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if (err != 0) {
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/* Return if TB_FW_CONFIG is not loaded */
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VERBOSE("Failed to load TB_FW_CONFIG\n");
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return;
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}
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config_base = arm_tb_fw_info.image_info.image_base;
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/* The BL2 ep_info arg0 is modified to point to TB_FW_CONFIG */
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image_desc = bl1_plat_get_image_desc(BL2_IMAGE_ID);
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assert(image_desc != NULL);
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image_desc->ep_info.args.arg0 = config_base;
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INFO("BL1: TB_FW_CONFIG loaded at address = %p\n",
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(void *) config_base);
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}
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/*
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* BL2 utility function to set the address of TB_FW_CONFIG passed from BL1.
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*/
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void arm_bl2_set_tb_cfg_addr(void *dtb)
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{
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assert(dtb != NULL);
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tb_fw_cfg_dtb = dtb;
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}
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/*
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* BL2 utility function to initialize dynamic configuration specified by
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* TB_FW_CONFIG. Return early if TB_FW_CONFIG is not found or HW_CONFIG is
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* not specified in TB_FW_CONFIG.
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*/
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void arm_bl2_dyn_cfg_init(void)
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{
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int err = 0;
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int tb_fw_node;
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bl_mem_params_node_t *hw_cfg_mem_params = NULL;
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if (tb_fw_cfg_dtb == NULL) {
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VERBOSE("No TB_FW_CONFIG specified\n");
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return;
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}
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err = arm_dyn_tb_fw_cfg_init((void *)tb_fw_cfg_dtb, &tb_fw_node);
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if (err < 0) {
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ERROR("Invalid TB_FW_CONFIG passed from BL1\n");
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panic();
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}
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/* Get the hw_config load address and size from TB_FW_CONFIG */
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hw_cfg_mem_params = get_bl_mem_params_node(HW_CONFIG_ID);
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if (hw_cfg_mem_params == NULL) {
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VERBOSE("Couldn't find HW_CONFIG in bl_mem_params_node\n");
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return;
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}
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err = arm_dyn_get_hwconfig_info((void *)tb_fw_cfg_dtb, tb_fw_node,
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(uint64_t *) &hw_cfg_mem_params->image_info.image_base,
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&hw_cfg_mem_params->image_info.image_max_size);
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if (err < 0) {
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VERBOSE("Couldn't find HW_CONFIG load info in TB_FW_CONFIG\n");
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return;
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}
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/* Remove the IMAGE_ATTRIB_SKIP_LOADING attribute from HW_CONFIG node */
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hw_cfg_mem_params->image_info.h.attr &= ~IMAGE_ATTRIB_SKIP_LOADING;
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}
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#endif /* LOAD_IMAGE_V2 */
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