blob: 9ce46354dc66dd13a6d9489c3f0c52688f19225b [file] [log] [blame]
/*
* Copyright (c) 2019-2020, ARM Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <common/debug.h>
#include <common/fdt_wrappers.h>
#include <lib/fconf/fconf.h>
#include <libfdt.h>
#include <plat/common/platform.h>
#include <platform_def.h>
struct fconf_dtb_info_t fconf_dtb_info;
void fconf_load_config(void)
{
int err;
/* fconf FW_CONFIG and TB_FW_CONFIG are currently the same DTB */
image_info_t arm_tb_fw_info = {
.h.type = (uint8_t)PARAM_IMAGE_BINARY,
.h.version = (uint8_t)VERSION_2,
.h.size = (uint16_t)sizeof(image_info_t),
.h.attr = 0,
.image_base = ARM_TB_FW_CONFIG_BASE,
.image_max_size = (uint32_t)
(ARM_TB_FW_CONFIG_LIMIT - ARM_TB_FW_CONFIG_BASE)
};
VERBOSE("FCONF: Loading FW_CONFIG\n");
err = load_auth_image(TB_FW_CONFIG_ID, &arm_tb_fw_info);
if (err != 0) {
/* Return if FW_CONFIG is not loaded */
VERBOSE("Failed to load FW_CONFIG\n");
return;
}
/* At this point we know that a DTB is indeed available */
fconf_dtb_info.base_addr = arm_tb_fw_info.image_base;
fconf_dtb_info.size = (size_t)arm_tb_fw_info.image_size;
#if !BL2_AT_EL3
image_desc_t *desc;
/* The BL2 ep_info arg0 is modified to point to FW_CONFIG */
desc = bl1_plat_get_image_desc(BL2_IMAGE_ID);
assert(desc != NULL);
desc->ep_info.args.arg0 = arm_tb_fw_info.image_base;
#endif
INFO("FCONF: FW_CONFIG loaded at address = 0x%lx\n", arm_tb_fw_info.image_base);
}
void fconf_populate(const char *config_type, uintptr_t config)
{
assert(config != 0UL);
/* Check if the pointer to DTB is correct */
if (fdt_check_header((void *)config) != 0) {
ERROR("FCONF: Invalid DTB file passed for %s\n", config_type);
panic();
}
INFO("FCONF: Reading %s firmware configuration file from: 0x%lx\n", config_type, config);
/* Go through all registered populate functions */
IMPORT_SYM(struct fconf_populator *, __FCONF_POPULATOR_START__, start);
IMPORT_SYM(struct fconf_populator *, __FCONF_POPULATOR_END__, end);
const struct fconf_populator *populator;
for (populator = start; populator != end; populator++) {
assert((populator->info != NULL) && (populator->populate != NULL));
if (strcmp(populator->config_type, config_type) == 0) {
INFO("FCONF: Reading firmware configuration information for: %s\n", populator->info);
if (populator->populate(config) != 0) {
/* TODO: handle property miss */
panic();
}
}
}
/* save local pointer to the config dtb */
fconf_dtb_info.base_addr = config;
}