Merge branch 'aosp/upstream-master' into HEAD am: faa476c0caHEADandroid-s-beta-5android-s-beta-4android-s-beta-3android-s-beta-2android-s-beta-1mastermain-cg-testing-releaseandroid-s-beta-5android-s-beta-4

Original change: https://android-review.googlesource.com/c/platform/external/arm-trusted-firmware/+/1589611

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I3a25534ceed4f8e188510641080d8b8ed49b8f62

5 files changed, 814 insertions, 0 deletions

diff --git a/lib/fconf/fconf.c b/lib/fconf/fconf.c
new file mode 100644
index 000000000..24b6bcc55
--- /dev/null
+++ b/lib/fconf/fconf.c
@@ -0,0 +1,78 @@
+/*
+ * 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 <lib/fconf/fconf_dyn_cfg_getter.h>
+#include <libfdt.h>
+#include <plat/common/platform.h>
+#include <platform_def.h>
+
+int fconf_load_config(unsigned int image_id)
+{
+	int err;
+	const struct dyn_cfg_dtb_info_t *config_info;
+
+	assert((image_id == FW_CONFIG_ID) || (image_id == TB_FW_CONFIG_ID));
+
+	image_info_t config_image_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
+	};
+
+	config_info = FCONF_GET_PROPERTY(dyn_cfg, dtb, image_id);
+	assert(config_info != NULL);
+
+	config_image_info.image_base = config_info->config_addr;
+	config_image_info.image_max_size = config_info->config_max_size;
+
+	VERBOSE("FCONF: Loading config with image ID: %d\n", image_id);
+	err = load_auth_image(image_id, &config_image_info);
+	if (err != 0) {
+		VERBOSE("Failed to load config %d\n", image_id);
+		return err;
+	}
+
+	INFO("FCONF: Config file with image ID:%d loaded at address = 0x%lx\n",
+		image_id, config_image_info.image_base);
+
+	return 0;
+}
+
+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();
+			}
+		}
+	}
+}
diff --git a/lib/fconf/fconf.mk b/lib/fconf/fconf.mk
new file mode 100644
index 000000000..b01dc6fea
--- /dev/null
+++ b/lib/fconf/fconf.mk
@@ -0,0 +1,12 @@
+#
+# Copyright (c) 2019-2020, ARM Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+# Add Firmware Configuration files
+FCONF_SOURCES		:=	lib/fconf/fconf.c
+FCONF_DYN_SOURCES	:=	lib/fconf/fconf_dyn_cfg_getter.c
+
+BL1_SOURCES		+=	${FCONF_SOURCES} ${FCONF_DYN_SOURCES}
+BL2_SOURCES		+=	${FCONF_SOURCES} ${FCONF_DYN_SOURCES}
diff --git a/lib/fconf/fconf_cot_getter.c b/lib/fconf/fconf_cot_getter.c
new file mode 100644
index 000000000..adfa5341c
--- /dev/null
+++ b/lib/fconf/fconf_cot_getter.c
@@ -0,0 +1,497 @@
+/*
+ * Copyright (c) 2020, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <stddef.h>
+
+#include <common/fdt_wrappers.h>
+#include <drivers/auth/mbedtls/mbedtls_config.h>
+#include <drivers/auth/auth_mod.h>
+#include <lib/fconf/fconf.h>
+#include <lib/object_pool.h>
+#include <libfdt.h>
+
+#include <tools_share/tbbr_oid.h>
+
+/* static structures used during authentication process */
+static auth_param_type_desc_t sig = AUTH_PARAM_TYPE_DESC(
+			AUTH_PARAM_SIG, 0);
+static auth_param_type_desc_t sig_alg = AUTH_PARAM_TYPE_DESC(
+			AUTH_PARAM_SIG_ALG, 0);
+static auth_param_type_desc_t raw_data = AUTH_PARAM_TYPE_DESC(
+			AUTH_PARAM_RAW_DATA, 0);
+
+/* pointers to an array of CoT descriptors */
+static const auth_img_desc_t *cot_desc[MAX_NUMBER_IDS];
+/* array of CoT descriptors */
+static auth_img_desc_t auth_img_descs[MAX_NUMBER_IDS];
+
+/* array of authentication methods structures */
+static auth_method_desc_t auth_methods[MAX_NUMBER_IDS * AUTH_METHOD_NUM];
+static OBJECT_POOL_ARRAY(auth_methods_pool, auth_methods);
+
+/* array of authentication params structures */
+static auth_param_desc_t auth_params[MAX_NUMBER_IDS * COT_MAX_VERIFIED_PARAMS];
+static OBJECT_POOL_ARRAY(auth_params_pool, auth_params);
+
+/* array of authentication param type structures */
+static auth_param_type_desc_t auth_param_type_descs[MAX_NUMBER_IDS];
+static OBJECT_POOL_ARRAY(auth_param_type_descs_pool, auth_param_type_descs);
+
+/*
+ * array of OIDs
+ * Object IDs are used to search hash, pk, counter values in certificate.
+ * As per binding we have below 2 combinations:
+ * 1. Certificates are validated using nv-cntr and pk
+ * 2. Raw images are authenticated using hash
+ * Hence in worst case, there are maximum 2 OIDs per image/certificate
+ */
+static unsigned char oids[(MAX_NUMBER_IDS * 2)][MAX_OID_NAME_LEN];
+static OBJECT_POOL_ARRAY(oid_pool, oids);
+
+/* An array of auth buffer which holds hashes and pk
+ * ToDo: Size decided with the current number of images and
+ * certificates which are available in CoT. Size of these buffers bound to
+ * increase in the future on the addition of images/certificates.
+ */
+static unsigned char hash_auth_bufs[20][HASH_DER_LEN];
+static OBJECT_POOL_ARRAY(hash_auth_buf_pool, hash_auth_bufs);
+static unsigned char pk_auth_bufs[12][PK_DER_LEN];
+static OBJECT_POOL_ARRAY(pk_auth_buf_pool, pk_auth_bufs);
+
+/*******************************************************************************
+ * update_parent_auth_data() - Update authentication data structure
+ * @auth_desc[in]:	Pointer to the auth image descriptor
+ * @type_desc[in]:	Pointer to authentication parameter
+ * @auth_buf_size[in]:	Buffer size to hold pk or hash
+ *
+ * Return 0 on success or an error value otherwise.
+ ******************************************************************************/
+static int update_parent_auth_data(const auth_img_desc_t *auth_desc,
+				   auth_param_type_desc_t *type_desc,
+				   unsigned int auth_buf_size)
+{
+	unsigned int i;
+	auth_param_desc_t *auth_data = &auth_desc->authenticated_data[0];
+	unsigned char *auth_buf;
+
+	for (i = 0U; i < COT_MAX_VERIFIED_PARAMS; i++) {
+		if (auth_data[i].type_desc == type_desc) {
+			return 0;
+		}
+		if (auth_data[i].type_desc == NULL) {
+			break;
+		}
+	}
+
+	if (auth_buf_size == HASH_DER_LEN) {
+		auth_buf = pool_alloc(&hash_auth_buf_pool);
+	} else if (auth_buf_size == PK_DER_LEN) {
+		auth_buf = pool_alloc(&pk_auth_buf_pool);
+	} else {
+		return -1;
+	}
+
+	if (i < COT_MAX_VERIFIED_PARAMS) {
+		auth_data[i].type_desc = type_desc;
+		auth_data[i].data.ptr = auth_buf;
+		auth_data[i].data.len = auth_buf_size;
+	} else {
+		ERROR("Out of authentication data array\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+/*******************************************************************************
+ * get_auth_param_type_desc() - Get pointer of authentication parameter
+ * @img_id[in]:		Image Id
+ * @type_desc[out]:	Pointer to authentication parameter
+ * @buf_size[out]:	Buffer size which hold hash/pk
+ *
+ * Return 0 on success or an error value otherwise.
+ ******************************************************************************/
+static int get_auth_param_type_desc(unsigned int img_id,
+				    auth_param_type_desc_t **type_desc,
+				    unsigned int *buf_size)
+{
+	auth_method_desc_t *img_auth_method = NULL;
+	img_type_t type = auth_img_descs[img_id].img_type;
+
+	if (type == IMG_CERT) {
+		img_auth_method =
+		&auth_img_descs[img_id].img_auth_methods[AUTH_METHOD_SIG];
+		*type_desc = img_auth_method->param.sig.pk;
+		*buf_size = PK_DER_LEN;
+	} else if (type == IMG_RAW) {
+		img_auth_method =
+		&auth_img_descs[img_id].img_auth_methods[AUTH_METHOD_HASH];
+		*type_desc = img_auth_method->param.hash.hash;
+		*buf_size = HASH_DER_LEN;
+	} else {
+		return -1;
+	}
+
+	return 0;
+}
+
+/*******************************************************************************
+ * set_auth_method() - Update global auth image descriptors with authentication
+ *			method data
+ * @auth_method_type[in]:	Type of authentication method
+ * @oid[in]:			Object Idetifier for pk/hash search
+ * @auth_method[in]:		Pointer to authentication method to set
+ ******************************************************************************/
+static void set_auth_method(auth_method_type_t auth_method_type, char *oid,
+			    auth_method_desc_t *auth_method)
+{
+	auth_param_type_t auth_param_type = AUTH_PARAM_NONE;
+	auth_param_type_desc_t *auth_param_type_desc;
+
+	assert(auth_method != NULL);
+
+	auth_param_type_desc = pool_alloc(&auth_param_type_descs_pool);
+	auth_method->type = auth_method_type;
+
+	if (auth_method_type == AUTH_METHOD_SIG) {
+		auth_param_type = AUTH_PARAM_PUB_KEY;
+		auth_method->param.sig.sig = &sig;
+		auth_method->param.sig.alg = &sig_alg;
+		auth_method->param.sig.data = &raw_data;
+		auth_method->param.sig.pk = auth_param_type_desc;
+	} else if (auth_method_type == AUTH_METHOD_HASH) {
+		auth_param_type = AUTH_PARAM_HASH;
+		auth_method->param.hash.data = &raw_data;
+		auth_method->param.hash.hash = auth_param_type_desc;
+	} else if (auth_method_type == AUTH_METHOD_NV_CTR) {
+		auth_param_type = AUTH_PARAM_NV_CTR;
+		auth_method->param.nv_ctr.cert_nv_ctr = auth_param_type_desc;
+		auth_method->param.nv_ctr.plat_nv_ctr = auth_param_type_desc;
+	}
+
+	auth_param_type_desc->type = auth_param_type;
+	auth_param_type_desc->cookie = (void *)oid;
+}
+
+/*******************************************************************************
+ * get_oid() -	get object identifier from device tree
+ * @dtb[in]:	Pointer to the device tree blob in memory
+ * @node[in]:	Offset of the node
+ * @prop[in]:	Property to read from the given node
+ * @oid[out]:	Object Indentifier of key/hash/nv-counter in certificate
+ *
+ * Return 0 on success or an error value otherwise.
+ ******************************************************************************/
+static int get_oid(const void *dtb, int node, const char *prop, char **oid)
+{
+	uint32_t phandle;
+	int rc;
+
+	rc = fdt_read_uint32(dtb, node, prop, &phandle);
+	if (rc < 0) {
+		return rc;
+	}
+
+	node = fdt_node_offset_by_phandle(dtb, phandle);
+	if (node < 0) {
+		return node;
+	}
+
+	*oid = pool_alloc(&oid_pool);
+	rc = fdtw_read_string(dtb, node, "oid", *oid, MAX_OID_NAME_LEN);
+
+	return rc;
+}
+
+/*******************************************************************************
+ * populate_and_set_auth_methods() -  Populate auth method parameters from
+ *			device tree and set authentication method
+ *			structure.
+ * @dtb[in]:		Pointer to the device tree blob in memory
+ * @node[in]:		Offset of the node
+ * @img_id[in]:		Image identifier
+ * @type[in]:		Type of image
+ * @root_certificate[in]:Root certificate (authenticated by ROTPK)
+ *
+ * Return 0 on success or an error value otherwise.
+ ******************************************************************************/
+static int populate_and_set_auth_methods(const void *dtb, int node,
+					 unsigned int img_id, img_type_t type,
+					 bool root_certificate)
+{
+	auth_method_type_t auth_method_type = AUTH_METHOD_NONE;
+	int rc;
+	char *oid = NULL;
+
+	auth_method_desc_t *auth_method = pool_alloc_n(&auth_methods_pool,
+					AUTH_METHOD_NUM);
+
+	/*
+	 * This is as per binding document where certificates are
+	 * verified by signature and images are verified by hash.
+	 */
+	if (type == IMG_CERT) {
+		if (root_certificate) {
+			oid = NULL;
+		} else {
+			rc = get_oid(dtb, node, "signing-key", &oid);
+			if (rc < 0) {
+				ERROR("FCONF: Can't read %s property\n",
+					"signing-key");
+				return rc;
+			}
+		}
+		auth_method_type = AUTH_METHOD_SIG;
+	} else if (type == IMG_RAW) {
+		rc = get_oid(dtb, node, "hash", &oid);
+		if (rc < 0) {
+			ERROR("FCONF: Can't read %s property\n",
+				"hash");
+			return rc;
+		}
+		auth_method_type = AUTH_METHOD_HASH;
+	} else {
+		return -1;
+	}
+
+	set_auth_method(auth_method_type, oid,
+			&auth_method[auth_method_type]);
+
+	/* Retrieve the optional property */
+	rc = get_oid(dtb, node, "antirollback-counter", &oid);
+	if (rc == 0) {
+		auth_method_type = AUTH_METHOD_NV_CTR;
+		set_auth_method(auth_method_type, oid,
+				&auth_method[auth_method_type]);
+	}
+
+	auth_img_descs[img_id].img_auth_methods = &auth_method[0];
+
+	return 0;
+}
+
+/*******************************************************************************
+ * get_parent_img_id() - Get parent image id for given child node
+ * @dtb[in]:		Pointer to the device tree blob in memory
+ * @node[in]:		Offset of the child node
+ * @parent_img_id[out]:	Image id of parent
+ *
+ * Return 0 on success or an error value otherwise.
+ ******************************************************************************/
+static int get_parent_img_id(const void *dtb, int node,
+			     unsigned int *parent_img_id)
+{
+	uint32_t phandle;
+	int err;
+
+	err = fdt_read_uint32(dtb, node, "parent", &phandle);
+	if (err < 0) {
+		ERROR("FCONF: Could not read %s property in node\n",
+			"parent");
+		return err;
+	}
+
+	node = fdt_node_offset_by_phandle(dtb, phandle);
+	if (node < 0) {
+		ERROR("FCONF: Failed to locate node using its phandle\n");
+		return node;
+	}
+
+	err = fdt_read_uint32(dtb, node, "image-id", parent_img_id);
+	if (err < 0) {
+		ERROR("FCONF: Could not read %s property in node\n",
+			"image-id");
+	}
+
+	return err;
+}
+
+/*******************************************************************************
+ * set_desc_data() - Update data in descriptor's structure
+ * @dtb[in]:	Pointer to the device tree blob in memory
+ * @node[in]:	Offset of the node
+ * @type[in]:	Type of image (RAW/CERT)
+ *
+ * Return 0 on success or an error value otherwise.
+ ******************************************************************************/
+static int set_desc_data(const void *dtb, int node, img_type_t type)
+{
+	int rc;
+	bool root_certificate = false;
+	unsigned int img_id, parent_img_id;
+
+	rc = fdt_read_uint32(dtb, node, "image-id", &img_id);
+	if (rc < 0) {
+		ERROR("FCONF: Can't find property %s in node\n",
+			"image-id");
+		return rc;
+	}
+
+	if (fdt_getprop(dtb, node, "root-certificate",
+					NULL) != NULL) {
+		root_certificate = true;
+	}
+
+	if (!root_certificate) {
+		rc = get_parent_img_id(dtb, node, &parent_img_id);
+		if (rc < 0) {
+			return rc;
+		}
+		auth_img_descs[img_id].parent = &auth_img_descs[parent_img_id];
+	}
+
+	auth_img_descs[img_id].img_id = img_id;
+	auth_img_descs[img_id].img_type = type;
+
+	rc = populate_and_set_auth_methods(dtb, node, img_id, type,
+				root_certificate);
+	if (rc < 0) {
+		return rc;
+	}
+
+	if (type == IMG_CERT) {
+		auth_param_desc_t *auth_param =
+			pool_alloc_n(&auth_params_pool,
+					COT_MAX_VERIFIED_PARAMS);
+		auth_img_descs[img_id].authenticated_data = &auth_param[0];
+	}
+
+	cot_desc[img_id] = &auth_img_descs[img_id];
+
+	return rc;
+}
+
+/*******************************************************************************
+ * populate_manifest_descs() - Populate CoT descriptors and update global
+ *			       certificate structures
+ * @dtb[in]:	Pointer to the device tree blob in memory
+ *
+ * Return 0 on success or an error value otherwise.
+ ******************************************************************************/
+static int populate_manifest_descs(const void *dtb)
+{
+	int node, child;
+	int rc;
+
+	/*
+	 * Assert the node offset points to "arm, cert-descs"
+	 * compatible property
+	 */
+	const char *compatible_str = "arm, cert-descs";
+
+	node = fdt_node_offset_by_compatible(dtb, -1, compatible_str);
+	if (node < 0) {
+		ERROR("FCONF: Can't find %s compatible in node\n",
+			compatible_str);
+		return node;
+	}
+
+	fdt_for_each_subnode(child, dtb, node) {
+		rc = set_desc_data(dtb, child, IMG_CERT);
+		if (rc < 0) {
+			return rc;
+		}
+	}
+
+	return 0;
+}
+
+/*******************************************************************************
+ * populate_image_descs() - Populate CoT descriptors and update global
+ *			    image descriptor structures.
+ * @dtb[in]:	Pointer to the device tree blob in memory
+ *
+ * Return 0 on success or an error value otherwise.
+ ******************************************************************************/
+static int populate_image_descs(const void *dtb)
+{
+	int node, child;
+	int rc;
+
+	/*
+	 * Assert the node offset points to "arm, img-descs"
+	 * compatible property
+	 */
+	const char *compatible_str = "arm, img-descs";
+
+	node = fdt_node_offset_by_compatible(dtb, -1, compatible_str);
+	if (node < 0) {
+		ERROR("FCONF: Can't find %s compatible in node\n",
+			compatible_str);
+		return node;
+	}
+
+	fdt_for_each_subnode(child, dtb, node) {
+		rc = set_desc_data(dtb, child, IMG_RAW);
+		if (rc < 0) {
+			return rc;
+		}
+	}
+
+	return 0;
+}
+
+/*******************************************************************************
+ * fconf_populate_cot_descs() - Populate CoT descriptors and update global
+ *				structures
+ * @config[in]:	Pointer to the device tree blob in memory
+ *
+ * Return 0 on success or an error value otherwise.
+ ******************************************************************************/
+static int fconf_populate_cot_descs(uintptr_t config)
+{
+	auth_param_type_desc_t *type_desc = NULL;
+	unsigned int auth_buf_size = 0U;
+	int rc;
+
+	/* As libfdt uses void *, we can't avoid this cast */
+	const void *dtb = (void *)config;
+
+	/* populate manifest descs information */
+	rc = populate_manifest_descs(dtb);
+	if (rc < 0) {
+		ERROR("FCONF: population of %s descs failed %d\n",
+			"manifest", rc);
+		return rc;
+	}
+
+	/* populate image descs information */
+	rc = populate_image_descs(dtb);
+	if (rc < 0) {
+		ERROR("FCONF: population of %s descs failed %d\n",
+			"images", rc);
+		return rc;
+	}
+
+	/* update parent's authentication data */
+	for (unsigned int i = 0U; i < MAX_NUMBER_IDS; i++) {
+		if (auth_img_descs[i].parent != NULL) {
+			rc = get_auth_param_type_desc(i,
+						&type_desc,
+						&auth_buf_size);
+			if (rc < 0) {
+				ERROR("FCONF: failed to get auth data %d\n",
+					rc);
+				return rc;
+			}
+
+			rc = update_parent_auth_data(auth_img_descs[i].parent,
+						type_desc,
+						auth_buf_size);
+			if (rc < 0) {
+				ERROR("FCONF: auth data update failed %d\n",
+					rc);
+				return rc;
+			}
+		}
+	}
+
+	return rc;
+}
+
+FCONF_REGISTER_POPULATOR(TB_FW, cot_desc, fconf_populate_cot_descs);
+REGISTER_COT(cot_desc);
diff --git a/lib/fconf/fconf_dyn_cfg_getter.c b/lib/fconf/fconf_dyn_cfg_getter.c
new file mode 100644
index 000000000..25dd7f9ed
--- /dev/null
+++ b/lib/fconf/fconf_dyn_cfg_getter.c
@@ -0,0 +1,130 @@
+/*
+ * 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_dyn_cfg_getter.h>
+#include <lib/object_pool.h>
+#include <libfdt.h>
+
+/* We currently use FW, TB_FW, SOC_FW, TOS_FW, NT_FW and HW configs  */
+#define MAX_DTB_INFO	U(6)
+/*
+ * Compile time assert if FW_CONFIG_ID is 0 which is more
+ * unlikely as 0 is a valid image ID for FIP as per the current
+ * code but still to avoid code breakage in case of unlikely
+ * event when image IDs get changed.
+ */
+CASSERT(FW_CONFIG_ID != U(0), assert_invalid_fw_config_id);
+
+static struct dyn_cfg_dtb_info_t dtb_infos[MAX_DTB_INFO];
+static OBJECT_POOL_ARRAY(dtb_info_pool, dtb_infos);
+
+/*
+ * This function is used to alloc memory for config information from
+ * global pool and set the configuration information.
+ */
+void set_config_info(uintptr_t config_addr, uint32_t config_max_size,
+			unsigned int config_id)
+{
+	struct dyn_cfg_dtb_info_t *dtb_info;
+
+	dtb_info = pool_alloc(&dtb_info_pool);
+	dtb_info->config_addr = config_addr;
+	dtb_info->config_max_size = config_max_size;
+	dtb_info->config_id = config_id;
+}
+
+struct dyn_cfg_dtb_info_t *dyn_cfg_dtb_info_getter(unsigned int config_id)
+{
+	unsigned int index;
+
+	/* Positions index to the proper config-id */
+	for (index = 0U; index < MAX_DTB_INFO; index++) {
+		if (dtb_infos[index].config_id == config_id) {
+			return &dtb_infos[index];
+		}
+	}
+
+	WARN("FCONF: Invalid config id %u\n", config_id);
+
+	return NULL;
+}
+
+int fconf_populate_dtb_registry(uintptr_t config)
+{
+	int rc;
+	int node, child;
+
+	/* As libfdt use void *, we can't avoid this cast */
+	const void *dtb = (void *)config;
+
+	/*
+	 * In case of BL1, fw_config dtb information is already
+	 * populated in global dtb_infos array by 'set_fw_config_info'
+	 * function, Below check is present to avoid re-population of
+	 * fw_config information.
+	 *
+	 * Other BLs, satisfy below check and populate fw_config information
+	 * in global dtb_infos array.
+	 */
+	if (dtb_infos[0].config_id == 0U) {
+		uint32_t config_max_size = fdt_totalsize(dtb);
+		set_config_info(config, config_max_size, FW_CONFIG_ID);
+	}
+
+	/* Find the node offset point to "fconf,dyn_cfg-dtb_registry" compatible property */
+	const char *compatible_str = "fconf,dyn_cfg-dtb_registry";
+	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;
+	}
+
+	fdt_for_each_subnode(child, dtb, node) {
+		uint32_t config_max_size, config_id;
+		uintptr_t config_addr;
+		uint64_t val64;
+
+		/* Read configuration dtb information */
+		rc = fdt_read_uint64(dtb, child, "load-address", &val64);
+		if (rc < 0) {
+			ERROR("FCONF: Incomplete configuration property in dtb-registry.\n");
+			return rc;
+		}
+		config_addr = (uintptr_t)val64;
+
+		rc = fdt_read_uint32(dtb, child, "max-size", &config_max_size);
+		if (rc < 0) {
+			ERROR("FCONF: Incomplete configuration property in dtb-registry.\n");
+			return rc;
+		}
+
+		rc = fdt_read_uint32(dtb, child, "id", &config_id);
+		if (rc < 0) {
+			ERROR("FCONF: Incomplete configuration property in dtb-registry.\n");
+			return rc;
+		}
+
+		VERBOSE("FCONF: dyn_cfg.dtb_registry cell found with:\n");
+		VERBOSE("\tload-address = %lx\n", config_addr);
+		VERBOSE("\tmax-size = 0x%x\n", config_max_size);
+		VERBOSE("\tconfig-id = %u\n", config_id);
+
+		set_config_info(config_addr, config_max_size, config_id);
+	}
+
+	if ((child < 0) && (child != -FDT_ERR_NOTFOUND)) {
+		ERROR("%d: fdt_for_each_subnode(): %d\n", __LINE__, node);
+		return child;
+	}
+
+	return 0;
+}
+
+FCONF_REGISTER_POPULATOR(FW_CONFIG, dyn_cfg, fconf_populate_dtb_registry);
diff --git a/lib/fconf/fconf_tbbr_getter.c b/lib/fconf/fconf_tbbr_getter.c
new file mode 100644
index 000000000..9a20ced4e
--- /dev/null
+++ b/lib/fconf/fconf_tbbr_getter.c
@@ -0,0 +1,97 @@
+/*
+ * 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;
+	uint64_t val64;
+	uint32_t val32;
+
+	/* 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 = fdt_read_uint32(dtb, node, "disable_auth",
+					&tbbr_dyn_config.disable_auth);
+	if (err < 0) {
+		WARN("FCONF: Read %s failed for `%s`\n",
+				"cell", "disable_auth");
+		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 `%s` cell %d\n",
+			"disable_auth", 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 = fdt_read_uint64(dtb, node, "mbedtls_heap_addr", &val64);
+	if (err < 0) {
+		ERROR("FCONF: Read %s failed for `%s`\n",
+			"cell", "mbedtls_heap_addr");
+		return err;
+	}
+	tbbr_dyn_config.mbedtls_heap_addr = (void *)(uintptr_t)val64;
+
+	err = fdt_read_uint32(dtb, node, "mbedtls_heap_size", &val32);
+	if (err < 0) {
+		ERROR("FCONF: Read %s failed for `%s`\n",
+			"cell", "mbedtls_heap_size");
+		return err;
+	}
+	tbbr_dyn_config.mbedtls_heap_size = val32;
+
+#if MEASURED_BOOT
+	/* Retrieve BL2 hash data details from the DTB */
+	err = fdtw_read_bytes(dtb, node, "bl2_hash_data", TCG_DIGEST_SIZE,
+				&tbbr_dyn_config.bl2_hash_data);
+	if (err < 0) {
+		ERROR("FCONF: Read %s failed for '%s'\n",
+				"bytes", "bl2_hash_data");
+		return err;
+	}
+#endif
+	VERBOSE("%s%s%s %d\n", "FCONF: `tbbr.", "disable_auth",
+		"` cell found with value =", tbbr_dyn_config.disable_auth);
+	VERBOSE("%s%s%s %p\n", "FCONF: `tbbr.", "mbedtls_heap_addr",
+		"` cell found with value =", tbbr_dyn_config.mbedtls_heap_addr);
+	VERBOSE("%s%s%s %zu\n", "FCONF: `tbbr.", "mbedtls_heap_size",
+		"` cell found with value =", tbbr_dyn_config.mbedtls_heap_size);
+#if MEASURED_BOOT
+	VERBOSE("%s%s%s %p\n", "FCONF: `tbbr.", "bl2_hash_data",
+		"` array found at address =", tbbr_dyn_config.bl2_hash_data);
+#endif
+	return 0;
+}
+
+FCONF_REGISTER_POPULATOR(TB_FW, tbbr, fconf_populate_tbbr_dyn_config);