blob: c6df9c87650989cf1c7c18e5a2837be9fa95f04d [file] [log] [blame]
/*
* Copyright (c) 2019-2020, ARM Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <common/bl_common.h>
#include <common/debug.h>
#include <common/fdt_wrappers.h>
#include <lib/fconf/fconf_tbbr_getter.h>
#include <libfdt.h>
struct tbbr_dyn_config_t tbbr_dyn_config;
int fconf_populate_tbbr_dyn_config(uintptr_t config)
{
int err;
int node;
/* As libfdt use void *, we can't avoid this cast */
const void *dtb = (void *)config;
/* Assert the node offset point to "arm,tb_fw" compatible property */
const char *compatible_str = "arm,tb_fw";
node = fdt_node_offset_by_compatible(dtb, -1, compatible_str);
if (node < 0) {
ERROR("FCONF: Can't find %s compatible in dtb\n", compatible_str);
return node;
}
/* Locate the disable_auth cell and read the value */
err = fdtw_read_cells(dtb, node, "disable_auth", 1, &tbbr_dyn_config.disable_auth);
if (err < 0) {
WARN("FCONF: Read cell failed for `disable_auth`\n");
return err;
}
/* Check if the value is boolean */
if ((tbbr_dyn_config.disable_auth != 0U) && (tbbr_dyn_config.disable_auth != 1U)) {
WARN("Invalid value for `disable_auth` cell %d\n", tbbr_dyn_config.disable_auth);
return -1;
}
#if defined(DYN_DISABLE_AUTH)
if (tbbr_dyn_config.disable_auth == 1)
dyn_disable_auth();
#endif
/* Retrieve the Mbed TLS heap details from the DTB */
err = fdtw_read_cells(dtb, node,
"mbedtls_heap_addr", 2, &tbbr_dyn_config.mbedtls_heap_addr);
if (err < 0) {
ERROR("FCONF: Read cell failed for mbedtls_heap\n");
return err;
}
err = fdtw_read_cells(dtb, node,
"mbedtls_heap_size", 1, &tbbr_dyn_config.mbedtls_heap_size);
if (err < 0) {
ERROR("FCONF: Read cell failed for mbedtls_heap\n");
return err;
}
VERBOSE("FCONF:tbbr.disable_auth cell found with value = %d\n",
tbbr_dyn_config.disable_auth);
VERBOSE("FCONF:tbbr.mbedtls_heap_addr cell found with value = %p\n",
tbbr_dyn_config.mbedtls_heap_addr);
VERBOSE("FCONF:tbbr.mbedtls_heap_size cell found with value = %zu\n",
tbbr_dyn_config.mbedtls_heap_size);
return 0;
}
FCONF_REGISTER_POPULATOR(tbbr, fconf_populate_tbbr_dyn_config);