1 /*
2 * Copyright (c) 2019-2025, Arm Limited. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8
9 #include <common/debug.h>
10 #include <common/fdt_wrappers.h>
11 #include <lib/fconf/fconf.h>
12 #include <lib/fconf/fconf_dyn_cfg_getter.h>
13 #include <libfdt.h>
14 #include <plat/common/platform.h>
15 #include <platform_def.h>
16
fconf_load_config(unsigned int image_id)17 int fconf_load_config(unsigned int image_id)
18 {
19 int err;
20 const struct dyn_cfg_dtb_info_t *config_info;
21 image_info_t config_image_info;
22
23 assert((image_id == FW_CONFIG_ID) || (image_id == TB_FW_CONFIG_ID));
24
25 SET_PARAM_HEAD(&config_image_info, PARAM_IMAGE_BINARY, VERSION_2, 0);
26
27 config_info = FCONF_GET_PROPERTY(dyn_cfg, dtb, image_id);
28 assert(config_info != NULL);
29
30 config_image_info.image_base = config_info->config_addr;
31 config_image_info.image_max_size = config_info->config_max_size;
32
33 VERBOSE("FCONF: Loading config with image ID: %u\n", image_id);
34 err = load_auth_image(image_id, &config_image_info);
35 if (err != 0) {
36 VERBOSE("Failed to load config %u\n", image_id);
37 return err;
38 }
39
40 INFO("FCONF: Config file with image ID:%u loaded at address = 0x%lx\n",
41 image_id, config_image_info.image_base);
42
43 return 0;
44 }
45
fconf_populate(const char * config_type,uintptr_t config)46 void fconf_populate(const char *config_type, uintptr_t config)
47 {
48 assert(config != 0UL);
49
50 /* Check if the pointer to DTB is correct */
51 if (fdt_check_header((void *)config) != 0) {
52 ERROR("FCONF: Invalid DTB file passed for %s\n", config_type);
53 panic();
54 }
55
56 INFO("FCONF: Reading %s firmware configuration file from: 0x%lx\n", config_type, config);
57
58 /* Go through all registered populate functions */
59 IMPORT_SYM(struct fconf_populator *, __FCONF_POPULATOR_START__, start);
60 IMPORT_SYM(struct fconf_populator *, __FCONF_POPULATOR_END__, end);
61 const struct fconf_populator *populator;
62
63 for (populator = start; populator != end; populator++) {
64 assert((populator->info != NULL) && (populator->populate != NULL));
65
66 if (strcmp(populator->config_type, config_type) == 0) {
67 INFO("FCONF: Reading firmware configuration information for: %s\n", populator->info);
68 if (populator->populate(config) != 0) {
69 /* TODO: handle property miss */
70 panic();
71 }
72 }
73 }
74 }
75