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-rw-r--r--lib/fconf/fconf.c78
-rw-r--r--lib/fconf/fconf.mk19
-rw-r--r--lib/fconf/fconf_amu_getter.c142
-rw-r--r--lib/fconf/fconf_cot_getter.c497
-rw-r--r--lib/fconf/fconf_dyn_cfg_getter.c155
-rw-r--r--lib/fconf/fconf_mpmm_getter.c80
-rw-r--r--lib/fconf/fconf_tbbr_getter.c84
7 files changed, 1055 insertions, 0 deletions
diff --git a/lib/fconf/fconf.c b/lib/fconf/fconf.c
new file mode 100644
index 0000000..b1d6eaa
--- /dev/null
+++ b/lib/fconf/fconf.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2019-2022, 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: %u\n", image_id);
+ err = load_auth_image(image_id, &config_image_info);
+ if (err != 0) {
+ VERBOSE("Failed to load config %u\n", image_id);
+ return err;
+ }
+
+ INFO("FCONF: Config file with image ID:%u 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 0000000..fb88910
--- /dev/null
+++ b/lib/fconf/fconf.mk
@@ -0,0 +1,19 @@
+#
+# Copyright (c) 2019-2021, ARM Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+include common/fdt_wrappers.mk
+
+FCONF_SOURCES := lib/fconf/fconf.c
+FCONF_SOURCES += ${FDT_WRAPPERS_SOURCES}
+
+FCONF_DYN_SOURCES := lib/fconf/fconf_dyn_cfg_getter.c
+FCONF_DYN_SOURCES += ${FDT_WRAPPERS_SOURCES}
+
+FCONF_AMU_SOURCES := lib/fconf/fconf_amu_getter.c
+FCONF_AMU_SOURCES += ${FDT_WRAPPERS_SOURCES}
+
+FCONF_MPMM_SOURCES := lib/fconf/fconf_mpmm_getter.c
+FCONF_MPMM_SOURCES += ${FDT_WRAPPERS_SOURCES}
diff --git a/lib/fconf/fconf_amu_getter.c b/lib/fconf/fconf_amu_getter.c
new file mode 100644
index 0000000..eff309c
--- /dev/null
+++ b/lib/fconf/fconf_amu_getter.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2021, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <common/debug.h>
+#include <common/fdt_wrappers.h>
+#include <lib/fconf/fconf.h>
+#include <lib/fconf/fconf_amu_getter.h>
+#include <libfdt.h>
+
+#include <plat/common/platform.h>
+
+struct fconf_amu_config fconf_amu_config;
+static struct amu_topology fconf_amu_topology_;
+
+/*
+ * Populate the core-specific AMU structure with information retrieved from a
+ * device tree.
+ *
+ * Returns `0` on success, or a negative integer representing an error code.
+ */
+static int fconf_populate_amu_cpu_amu(const void *fdt, int parent,
+ struct amu_core *amu)
+{
+ int ret = 0;
+ int node = 0;
+
+ fdt_for_each_subnode(node, fdt, parent) {
+ const char *name;
+ const char *value;
+ int len;
+
+ uintptr_t idx = 0U;
+
+ name = fdt_get_name(fdt, node, &len);
+ if (strncmp(name, "counter@", 8) != 0) {
+ continue;
+ }
+
+ ret = fdt_get_reg_props_by_index(fdt, node, 0, &idx, NULL);
+ if (ret < 0) {
+ break;
+ }
+
+ value = fdt_getprop(fdt, node, "enable-at-el3", &len);
+ if ((value == NULL) && (len != -FDT_ERR_NOTFOUND)) {
+ break;
+ }
+
+ if (len != -FDT_ERR_NOTFOUND) {
+ amu->enable |= (1 << idx);
+ }
+ }
+
+ if ((node < 0) && (node != -FDT_ERR_NOTFOUND)) {
+ return node;
+ }
+
+ return ret;
+}
+
+/*
+ * Within a `cpu` node, attempt to dereference the `amu` property, and populate
+ * the AMU information for the core.
+ *
+ * Returns `0` on success, or a negative integer representing an error code.
+ */
+static int fconf_populate_amu_cpu(const void *fdt, int node, uintptr_t mpidr)
+{
+ int ret;
+ int idx;
+
+ uint32_t amu_phandle;
+ struct amu_core *amu;
+
+ ret = fdt_read_uint32(fdt, node, "amu", &amu_phandle);
+ if (ret < 0) {
+ if (ret == -FDT_ERR_NOTFOUND) {
+ ret = 0;
+ }
+
+ return ret;
+ }
+
+ node = fdt_node_offset_by_phandle(fdt, amu_phandle);
+ if (node < 0) {
+ return node;
+ }
+
+ idx = plat_core_pos_by_mpidr(mpidr);
+ if (idx < 0) {
+ return -FDT_ERR_BADVALUE;
+ }
+
+ amu = &fconf_amu_topology_.cores[idx];
+
+ return fconf_populate_amu_cpu_amu(fdt, node, amu);
+}
+
+/*
+ * Populates the global `amu_topology` structure based on what's described by
+ * the hardware configuration device tree blob.
+ *
+ * The device tree is expected to provide an `amu` property for each `cpu` node,
+ * like so:
+ *
+ * cpu@0 {
+ * amu = <&cpu0_amu>;
+ * };
+ *
+ * amus {
+ * cpu0_amu: amu-0 {
+ * counters {
+ * #address-cells = <2>;
+ * #size-cells = <0>;
+ *
+ * counter@x,y {
+ * reg = <x y>; // Group x, counter y
+ * };
+ * };
+ * };
+ * };
+ */
+static int fconf_populate_amu(uintptr_t config)
+{
+ int ret = fdtw_for_each_cpu(
+ (const void *)config, fconf_populate_amu_cpu);
+ if (ret == 0) {
+ fconf_amu_config.topology = &fconf_amu_topology_;
+ } else {
+ ERROR("FCONF: failed to parse AMU information: %d\n", ret);
+ }
+
+ return ret;
+}
+
+FCONF_REGISTER_POPULATOR(HW_CONFIG, amu, fconf_populate_amu);
diff --git a/lib/fconf/fconf_cot_getter.c b/lib/fconf/fconf_cot_getter.c
new file mode 100644
index 0000000..ae59d8c
--- /dev/null
+++ b/lib/fconf/fconf_cot_getter.c
@@ -0,0 +1,497 @@
+/*
+ * Copyright (c) 2020-2022, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <stddef.h>
+
+#include <common/fdt_wrappers.h>
+#include MBEDTLS_CONFIG_FILE
+#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 0000000..351772e
--- /dev/null
+++ b/lib/fconf/fconf_dyn_cfg_getter.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 2019-2022, 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>
+
+#include <platform_def.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, uintptr_t ns_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->ns_config_addr = ns_config_addr;
+ dtb_info->config_max_size = config_max_size;
+ dtb_info->config_id = config_id;
+}
+
+/* Get index of the config_id image */
+unsigned int dyn_cfg_dtb_info_get_index(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 index;
+ }
+ }
+
+ return FCONF_INVALID_IDX;
+}
+
+struct dyn_cfg_dtb_info_t *dyn_cfg_dtb_info_getter(unsigned int config_id)
+{
+ /* Positions index to the proper config-id */
+ unsigned int index = dyn_cfg_dtb_info_get_index(config_id);
+
+ if (index < MAX_DTB_INFO) {
+ 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, ~0UL, 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;
+ uintptr_t ns_config_addr = ~0UL;
+ 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);
+
+ rc = fdt_read_uint64(dtb, child, "ns-load-address", &val64);
+ if (rc == 0) {
+ ns_config_addr = (uintptr_t)val64;
+ VERBOSE("\tns-load-address = %lx\n", ns_config_addr);
+ }
+
+ set_config_info(config_addr, ns_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_mpmm_getter.c b/lib/fconf/fconf_mpmm_getter.c
new file mode 100644
index 0000000..02a566d
--- /dev/null
+++ b/lib/fconf/fconf_mpmm_getter.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2021, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <common/debug.h>
+#include <common/fdt_wrappers.h>
+#include <lib/fconf/fconf.h>
+#include <lib/fconf/fconf_mpmm_getter.h>
+#include <libfdt.h>
+
+#include <plat/common/platform.h>
+
+struct fconf_mpmm_config fconf_mpmm_config;
+static struct mpmm_topology fconf_mpmm_topology;
+
+/*
+ * Within a `cpu` node, determine support for MPMM via the `supports-mpmm`
+ * property.
+ *
+ * Returns `0` on success, or a negative integer representing an error code.
+ */
+static int fconf_populate_mpmm_cpu(const void *fdt, int off, uintptr_t mpidr)
+{
+ int ret, len;
+
+ int core_pos;
+ struct mpmm_core *core;
+
+ core_pos = plat_core_pos_by_mpidr(mpidr);
+ if (core_pos < 0) {
+ return -FDT_ERR_BADVALUE;
+ }
+
+ core = &fconf_mpmm_topology.cores[core_pos];
+
+ fdt_getprop(fdt, off, "supports-mpmm", &len);
+ if (len >= 0) {
+ core->supported = true;
+ ret = 0;
+ } else {
+ core->supported = false;
+ ret = len;
+ }
+
+ return ret;
+}
+
+/*
+ * Populates the global `fconf_mpmm_config` structure based on what's described
+ * by the hardware configuration device tree blob.
+ *
+ * The device tree is expected to provide a `supports-mpmm` property for each
+ * `cpu` node, like so:
+ *
+ * cpu@0 {
+ * supports-mpmm;
+ * };
+ *
+ * This property indicates whether the core implements MPMM, as we cannot detect
+ * support for it dynamically.
+ */
+static int fconf_populate_mpmm(uintptr_t config)
+{
+ int ret = fdtw_for_each_cpu(
+ (const void *)config, fconf_populate_mpmm_cpu);
+ if (ret == 0) {
+ fconf_mpmm_config.topology = &fconf_mpmm_topology;
+ } else {
+ ERROR("FCONF: failed to configure MPMM: %d\n", ret);
+ }
+
+ return ret;
+}
+
+FCONF_REGISTER_POPULATOR(HW_CONFIG, mpmm, fconf_populate_mpmm);
diff --git a/lib/fconf/fconf_tbbr_getter.c b/lib/fconf/fconf_tbbr_getter.c
new file mode 100644
index 0000000..c3b4b7e
--- /dev/null
+++ b/lib/fconf/fconf_tbbr_getter.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2019-2022, 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 %u\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;
+
+ VERBOSE("%s%s%s %u\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);
+
+ return 0;
+}
+
+FCONF_REGISTER_POPULATOR(TB_FW, tbbr, fconf_populate_tbbr_dyn_config);