refactor(auth): separate bl1 and bl2 CoT
Separate the bl1 and bl2 CoT into individual C files for the
upcoming tool, i.e. the CoT device tree-to-source file generator.
Change-Id: I0d24791991b3539c7aef9a562920dc62fecdc69a
Signed-off-by: Xialin Liu <Xialin.Liu@ARM.com>
diff --git a/drivers/auth/dualroot/bl1_cot.c b/drivers/auth/dualroot/bl1_cot.c
new file mode 100644
index 0000000..a548170
--- /dev/null
+++ b/drivers/auth/dualroot/bl1_cot.c
@@ -0,0 +1,246 @@
+/*
+ * Copyright (c) 2020-2024, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stddef.h>
+
+#include <mbedtls/version.h>
+
+#include <common/tbbr/cot_def.h>
+#include <drivers/auth/auth_mod.h>
+#include <platform_def.h>
+#include <tools_share/dualroot_oid.h>
+
+/*
+ * Allocate static buffers to store the authentication parameters extracted from
+ * the certificates.
+ */
+static unsigned char fw_config_hash_buf[HASH_DER_LEN];
+static unsigned char tb_fw_hash_buf[HASH_DER_LEN];
+static unsigned char tb_fw_config_hash_buf[HASH_DER_LEN];
+static unsigned char scp_fw_hash_buf[HASH_DER_LEN];
+static unsigned char nt_world_bl_hash_buf[HASH_DER_LEN];
+
+/*
+ * Parameter type descriptors.
+ */
+static auth_param_type_desc_t trusted_nv_ctr = AUTH_PARAM_TYPE_DESC(
+ AUTH_PARAM_NV_CTR, TRUSTED_FW_NVCOUNTER_OID);
+static auth_param_type_desc_t subject_pk = AUTH_PARAM_TYPE_DESC(
+ AUTH_PARAM_PUB_KEY, 0);
+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);
+
+static auth_param_type_desc_t tb_fw_hash = AUTH_PARAM_TYPE_DESC(
+ AUTH_PARAM_HASH, TRUSTED_BOOT_FW_HASH_OID);
+static auth_param_type_desc_t tb_fw_config_hash = AUTH_PARAM_TYPE_DESC(
+ AUTH_PARAM_HASH, TRUSTED_BOOT_FW_CONFIG_HASH_OID);
+static auth_param_type_desc_t fw_config_hash = AUTH_PARAM_TYPE_DESC(
+ AUTH_PARAM_HASH, FW_CONFIG_HASH_OID);
+static auth_param_type_desc_t scp_bl2u_hash = AUTH_PARAM_TYPE_DESC(
+ AUTH_PARAM_HASH, SCP_FWU_CFG_HASH_OID);
+static auth_param_type_desc_t bl2u_hash = AUTH_PARAM_TYPE_DESC(
+ AUTH_PARAM_HASH, AP_FWU_CFG_HASH_OID);
+static auth_param_type_desc_t ns_bl2u_hash = AUTH_PARAM_TYPE_DESC(
+ AUTH_PARAM_HASH, FWU_HASH_OID);
+
+static const auth_img_desc_t trusted_boot_fw_cert = {
+ .img_id = TRUSTED_BOOT_FW_CERT_ID,
+ .img_type = IMG_CERT,
+ .parent = NULL,
+ .img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
+ [0] = {
+ .type = AUTH_METHOD_SIG,
+ .param.sig = {
+ .pk = &subject_pk,
+ .sig = &sig,
+ .alg = &sig_alg,
+ .data = &raw_data
+ }
+ },
+ [1] = {
+ .type = AUTH_METHOD_NV_CTR,
+ .param.nv_ctr = {
+ .cert_nv_ctr = &trusted_nv_ctr,
+ .plat_nv_ctr = &trusted_nv_ctr
+ }
+ }
+ },
+ .authenticated_data = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
+ [0] = {
+ .type_desc = &tb_fw_hash,
+ .data = {
+ .ptr = (void *)tb_fw_hash_buf,
+ .len = (unsigned int)HASH_DER_LEN
+ }
+ },
+ [1] = {
+ .type_desc = &tb_fw_config_hash,
+ .data = {
+ .ptr = (void *)tb_fw_config_hash_buf,
+ .len = (unsigned int)HASH_DER_LEN
+ }
+ },
+ [2] = {
+ .type_desc = &fw_config_hash,
+ .data = {
+ .ptr = (void *)fw_config_hash_buf,
+ .len = (unsigned int)HASH_DER_LEN
+ }
+ }
+ }
+};
+
+static const auth_img_desc_t bl2_image = {
+ .img_id = BL2_IMAGE_ID,
+ .img_type = IMG_RAW,
+ .parent = &trusted_boot_fw_cert,
+ .img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
+ [0] = {
+ .type = AUTH_METHOD_HASH,
+ .param.hash = {
+ .data = &raw_data,
+ .hash = &tb_fw_hash
+ }
+ }
+ }
+};
+
+/* TB FW Config */
+static const auth_img_desc_t tb_fw_config = {
+ .img_id = TB_FW_CONFIG_ID,
+ .img_type = IMG_RAW,
+ .parent = &trusted_boot_fw_cert,
+ .img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
+ [0] = {
+ .type = AUTH_METHOD_HASH,
+ .param.hash = {
+ .data = &raw_data,
+ .hash = &tb_fw_config_hash
+ }
+ }
+ }
+};
+
+static const auth_img_desc_t fw_config = {
+ .img_id = FW_CONFIG_ID,
+ .img_type = IMG_RAW,
+ .parent = &trusted_boot_fw_cert,
+ .img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
+ [0] = {
+ .type = AUTH_METHOD_HASH,
+ .param.hash = {
+ .data = &raw_data,
+ .hash = &fw_config_hash
+ }
+ }
+ }
+};
+
+/* FWU auth descriptor */
+static const auth_img_desc_t fwu_cert = {
+ .img_id = FWU_CERT_ID,
+ .img_type = IMG_CERT,
+ .parent = NULL,
+ .img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
+ [0] = {
+ .type = AUTH_METHOD_SIG,
+ .param.sig = {
+ .pk = &subject_pk,
+ .sig = &sig,
+ .alg = &sig_alg,
+ .data = &raw_data
+ }
+ }
+ },
+ .authenticated_data = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
+ [0] = {
+ .type_desc = &scp_bl2u_hash,
+ .data = {
+ .ptr = (void *)scp_fw_hash_buf,
+ .len = (unsigned int)HASH_DER_LEN
+ }
+ },
+ [1] = {
+ .type_desc = &bl2u_hash,
+ .data = {
+ .ptr = (void *)tb_fw_hash_buf,
+ .len = (unsigned int)HASH_DER_LEN
+ }
+ },
+ [2] = {
+ .type_desc = &ns_bl2u_hash,
+ .data = {
+ .ptr = (void *)nt_world_bl_hash_buf,
+ .len = (unsigned int)HASH_DER_LEN
+ }
+ }
+ }
+};
+
+/* SCP_BL2U */
+static const auth_img_desc_t scp_bl2u_image = {
+ .img_id = SCP_BL2U_IMAGE_ID,
+ .img_type = IMG_RAW,
+ .parent = &fwu_cert,
+ .img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
+ [0] = {
+ .type = AUTH_METHOD_HASH,
+ .param.hash = {
+ .data = &raw_data,
+ .hash = &scp_bl2u_hash
+ }
+ }
+ }
+};
+
+/* BL2U */
+static const auth_img_desc_t bl2u_image = {
+ .img_id = BL2U_IMAGE_ID,
+ .img_type = IMG_RAW,
+ .parent = &fwu_cert,
+ .img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
+ [0] = {
+ .type = AUTH_METHOD_HASH,
+ .param.hash = {
+ .data = &raw_data,
+ .hash = &bl2u_hash
+ }
+ }
+ }
+};
+
+/* NS_BL2U */
+static const auth_img_desc_t ns_bl2u_image = {
+ .img_id = NS_BL2U_IMAGE_ID,
+ .img_type = IMG_RAW,
+ .parent = &fwu_cert,
+ .img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
+ [0] = {
+ .type = AUTH_METHOD_HASH,
+ .param.hash = {
+ .data = &raw_data,
+ .hash = &ns_bl2u_hash
+ }
+ }
+ }
+};
+
+static const auth_img_desc_t * const cot_desc[] = {
+ [TRUSTED_BOOT_FW_CERT_ID] = &trusted_boot_fw_cert,
+ [BL2_IMAGE_ID] = &bl2_image,
+ [TB_FW_CONFIG_ID] = &tb_fw_config,
+ [FW_CONFIG_ID] = &fw_config,
+ [FWU_CERT_ID] = &fwu_cert,
+ [SCP_BL2U_IMAGE_ID] = &scp_bl2u_image,
+ [BL2U_IMAGE_ID] = &bl2u_image,
+ [NS_BL2U_IMAGE_ID] = &ns_bl2u_image
+};
+
+REGISTER_COT(cot_desc);