blob: 02f995f7f83626f3f4d40a174748894629c5da46 [file] [log] [blame]
/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arm_dyn_cfg_helpers.h>
#include <assert.h>
#include <debug.h>
#include <desc_image_load.h>
#include <plat_arm.h>
#include <platform.h>
#include <platform_def.h>
#include <string.h>
#include <tbbr_img_def.h>
#if LOAD_IMAGE_V2
/* Variable to store the address to TB_FW_CONFIG passed from BL1 */
static void *tb_fw_cfg_dtb;
/*
* Helper function to load TB_FW_CONFIG and populate the load information to
* arg0 of BL2 entrypoint info.
*/
void arm_load_tb_fw_config(void)
{
int err;
uintptr_t config_base = 0;
image_desc_t *image_desc;
image_desc_t arm_tb_fw_info = {
.image_id = TB_FW_CONFIG_ID,
SET_STATIC_PARAM_HEAD(image_info, PARAM_IMAGE_BINARY,
VERSION_2, image_info_t, 0),
.image_info.image_base = ARM_TB_FW_CONFIG_BASE,
.image_info.image_max_size = ARM_TB_FW_CONFIG_LIMIT - ARM_TB_FW_CONFIG_BASE,
};
VERBOSE("BL1: Loading TB_FW_CONFIG\n");
err = load_auth_image(TB_FW_CONFIG_ID, &arm_tb_fw_info.image_info);
if (err != 0) {
/* Return if TB_FW_CONFIG is not loaded */
VERBOSE("Failed to load TB_FW_CONFIG\n");
return;
}
config_base = arm_tb_fw_info.image_info.image_base;
/* The BL2 ep_info arg0 is modified to point to TB_FW_CONFIG */
image_desc = bl1_plat_get_image_desc(BL2_IMAGE_ID);
assert(image_desc != NULL);
image_desc->ep_info.args.arg0 = config_base;
INFO("BL1: TB_FW_CONFIG loaded at address = %p\n",
(void *) config_base);
}
/*
* BL2 utility function to set the address of TB_FW_CONFIG passed from BL1.
*/
void arm_bl2_set_tb_cfg_addr(void *dtb)
{
assert(dtb != NULL);
tb_fw_cfg_dtb = dtb;
}
/*
* BL2 utility function to initialize dynamic configuration specified by
* TB_FW_CONFIG. Return early if TB_FW_CONFIG is not found or HW_CONFIG is
* not specified in TB_FW_CONFIG.
*/
void arm_bl2_dyn_cfg_init(void)
{
int err = 0;
int tb_fw_node;
bl_mem_params_node_t *hw_cfg_mem_params = NULL;
if (tb_fw_cfg_dtb == NULL) {
VERBOSE("No TB_FW_CONFIG specified\n");
return;
}
err = arm_dyn_tb_fw_cfg_init((void *)tb_fw_cfg_dtb, &tb_fw_node);
if (err < 0) {
ERROR("Invalid TB_FW_CONFIG passed from BL1\n");
panic();
}
/* Get the hw_config load address and size from TB_FW_CONFIG */
hw_cfg_mem_params = get_bl_mem_params_node(HW_CONFIG_ID);
if (hw_cfg_mem_params == NULL) {
VERBOSE("Couldn't find HW_CONFIG in bl_mem_params_node\n");
return;
}
err = arm_dyn_get_hwconfig_info((void *)tb_fw_cfg_dtb, tb_fw_node,
(uint64_t *) &hw_cfg_mem_params->image_info.image_base,
&hw_cfg_mem_params->image_info.image_max_size);
if (err < 0) {
VERBOSE("Couldn't find HW_CONFIG load info in TB_FW_CONFIG\n");
return;
}
/* Remove the IMAGE_ATTRIB_SKIP_LOADING attribute from HW_CONFIG node */
hw_cfg_mem_params->image_info.h.attr &= ~IMAGE_ATTRIB_SKIP_LOADING;
}
#endif /* LOAD_IMAGE_V2 */