1 /*
2  * Copyright (c) 2019-2022, 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 
22 	assert((image_id == FW_CONFIG_ID) || (image_id == TB_FW_CONFIG_ID));
23 
24 	image_info_t config_image_info = {
25 		.h.type = (uint8_t)PARAM_IMAGE_BINARY,
26 		.h.version = (uint8_t)VERSION_2,
27 		.h.size = (uint16_t)sizeof(image_info_t),
28 		.h.attr = 0
29 	};
30 
31 	config_info = FCONF_GET_PROPERTY(dyn_cfg, dtb, image_id);
32 	assert(config_info != NULL);
33 
34 	config_image_info.image_base = config_info->config_addr;
35 	config_image_info.image_max_size = config_info->config_max_size;
36 
37 	VERBOSE("FCONF: Loading config with image ID: %u\n", image_id);
38 	err = load_auth_image(image_id, &config_image_info);
39 	if (err != 0) {
40 		VERBOSE("Failed to load config %u\n", image_id);
41 		return err;
42 	}
43 
44 	INFO("FCONF: Config file with image ID:%u loaded at address = 0x%lx\n",
45 	     image_id, config_image_info.image_base);
46 
47 	return 0;
48 }
49 
fconf_populate(const char * config_type,uintptr_t config)50 void fconf_populate(const char *config_type, uintptr_t config)
51 {
52 	assert(config != 0UL);
53 
54 	/* Check if the pointer to DTB is correct */
55 	if (fdt_check_header((void *)config) != 0) {
56 		ERROR("FCONF: Invalid DTB file passed for %s\n", config_type);
57 		panic();
58 	}
59 
60 	INFO("FCONF: Reading %s firmware configuration file from: 0x%lx\n", config_type, config);
61 
62 	/* Go through all registered populate functions */
63 	IMPORT_SYM(struct fconf_populator *, __FCONF_POPULATOR_START__, start);
64 	IMPORT_SYM(struct fconf_populator *, __FCONF_POPULATOR_END__, end);
65 	const struct fconf_populator *populator;
66 
67 	for (populator = start; populator != end; populator++) {
68 		assert((populator->info != NULL) && (populator->populate != NULL));
69 
70 		if (strcmp(populator->config_type, config_type) == 0) {
71 			INFO("FCONF: Reading firmware configuration information for: %s\n", populator->info);
72 			if (populator->populate(config) != 0) {
73 				/* TODO: handle property miss */
74 				panic();
75 			}
76 		}
77 	}
78 }
79