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Cleanup the code for TBBR CoT descriptors

Browse Source 
CoT used for BL1 and BL2 are moved to tbbr_cot_bl1.c
and tbbr_cot_bl2.c respectively.
Common CoT used across BL1 and BL2 are moved to
tbbr_cot_common.c.

Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I2252ac8a6960b3431bcaafdb3ea4fb2d01b79cf5
This commit is contained in:
Manish V Badarkhe 2020-05-16 16:36:39 +01:00
parent 4108abb4a0
commit ad43c49ee3
15 changed files with 394 additions and 360 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
docs/design/auth-framework.rst
View File

@ -619,11 +619,13 @@ recommended to read this guide along with the source code.
The TBBR CoT
~~~~~~~~~~~~
The CoT can be found in ``drivers/auth/tbbr/tbbr_cot.c``. This CoT consists of
an array of pointers to image descriptors and it is registered in the framework
using the macro ``REGISTER_COT(cot_desc)``, where ``cot_desc`` must be the name
of the array (passing a pointer or any other type of indirection will cause the
registration process to fail).
CoT specific to BL1 and BL2 can be found in ``drivers/auth/tbbr/tbbr_cot_bl1.c``
and ``drivers/auth/tbbr/tbbr_cot_bl2.c`` respectively. The common CoT used across
BL1 and BL2 can be found in ``drivers/auth/tbbr/tbbr_cot_common.c``.
This CoT consists of an array of pointers to image descriptors and it is
registered in the framework using the macro ``REGISTER_COT(cot_desc)``, where
``cot_desc`` must be the name of the array (passing a pointer or any other
type of indirection will cause the registration process to fail).
The number of images participating in the boot process depends on the CoT.
There is, however, a minimum set of images that are mandatory in TF-A and thus
@ -702,7 +704,7 @@ Each image descriptor must specify:
address/size to store the parameter. The CoT is responsible for allocating
the required memory to store the parameters. This pointer may be NULL.
In the ``tbbr_cot.c`` file, a set of buffers are allocated to store the parameters
In the ``tbbr_cot*.c`` file, a set of buffers are allocated to store the parameters
extracted from the certificates. In the case of the TBBR CoT, these parameters
are hashes and public keys. In DER format, an RSA-4096 public key requires 550
bytes, and a hash requires 51 bytes. Depending on the CoT and the authentication

38
drivers/auth/dualroot/cot.c
View File

@ -12,44 +12,6 @@
#include <drivers/auth/auth_mod.h>
#include <tools_share/dualroot_oid.h>
/*
* TODO: Remove dependency on mbedTLS. The chain of trust should be agnostic of
* the specific cryptographic library in use.
*/
/*
* Maximum key and hash sizes (in DER format).
*
* Both RSA and ECDSA keys may be used at the same time. In this case, the key
* buffers must be big enough to hold either. As RSA keys are bigger than ECDSA
* ones for all key sizes we support, they impose the minimum size of these
* buffers.
*/
#if TF_MBEDTLS_USE_RSA
#if TF_MBEDTLS_KEY_SIZE == 1024
#define PK_DER_LEN 162
#elif TF_MBEDTLS_KEY_SIZE == 2048
#define PK_DER_LEN 294
#elif TF_MBEDTLS_KEY_SIZE == 3072
#define PK_DER_LEN 422
#elif TF_MBEDTLS_KEY_SIZE == 4096
#define PK_DER_LEN 550
#else
#error "Invalid value for TF_MBEDTLS_KEY_SIZE"
#endif
#else /* Only using ECDSA keys. */
#define PK_DER_LEN 91
#endif
#if TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA256
#define HASH_DER_LEN 51
#elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA384
#define HASH_DER_LEN 67
#elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA512
#define HASH_DER_LEN 83
#else
#error "Invalid value for TF_MBEDTLS_HASH_ALG_ID"
#endif
/*
* Allocate static buffers to store the authentication parameters extracted from
* the certificates.

168
drivers/auth/tbbr/tbbr_cot_bl1.c Normal file
View File

@ -0,0 +1,168 @@
/*
* Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stddef.h>
#include <platform_def.h>
#include <drivers/auth/mbedtls/mbedtls_config.h>
#include <drivers/auth/auth_mod.h>
#include <drivers/auth/tbbr_cot_common.h>
#if USE_TBBR_DEFS
#include <tools_share/tbbr_oid.h>
#else
#include <platform_oid.h>
#endif
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 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
}
}
}
};
/*
* 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
}
}
}
};
/*
* 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
}
}
}
};
/*
* TBBR Chain of trust definition
*/
static const auth_img_desc_t * const cot_desc[] = {
[TRUSTED_BOOT_FW_CERT_ID] = &trusted_boot_fw_cert,
[BL2_IMAGE_ID] = &bl2_image,
[HW_CONFIG_ID] = &hw_config,
[TB_FW_CONFIG_ID] = &tb_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 the CoT in the authentication module */
REGISTER_COT(cot_desc);

294
drivers/auth/tbbr/tbbr_cot.c → drivers/auth/tbbr/tbbr_cot_bl2.c
View File

@ -10,60 +10,13 @@
#include <drivers/auth/mbedtls/mbedtls_config.h>
#include <drivers/auth/auth_mod.h>
#include <drivers/auth/tbbr_cot_common.h>
#if USE_TBBR_DEFS
#include <tools_share/tbbr_oid.h>
#else
#include <platform_oid.h>
#endif
/*
* Maximum key and hash sizes (in DER format).
*
* Both RSA and ECDSA keys may be used at the same time. In this case, the key
* buffers must be big enough to hold either. As RSA keys are bigger than ECDSA
* ones for all key sizes we support, they impose the minimum size of these
* buffers.
*/
#if TF_MBEDTLS_USE_RSA
#if TF_MBEDTLS_KEY_SIZE == 1024
#define PK_DER_LEN 162
#elif TF_MBEDTLS_KEY_SIZE == 2048
#define PK_DER_LEN 294
#elif TF_MBEDTLS_KEY_SIZE == 3072
#define PK_DER_LEN 422
#elif TF_MBEDTLS_KEY_SIZE == 4096
#define PK_DER_LEN 550
#else
#error "Invalid value for TF_MBEDTLS_KEY_SIZE"
#endif
#else /* Only using ECDSA keys. */
#define PK_DER_LEN 91
#endif
#if TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA256
#define HASH_DER_LEN 51
#elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA384
#define HASH_DER_LEN 67
#elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA512
#define HASH_DER_LEN 83
#else
#error "Invalid value for TF_MBEDTLS_HASH_ALG_ID"
#endif
/*
* The platform must allocate buffers to store the authentication parameters
* extracted from the certificates. In this case, because of the way the CoT is
* established, we can reuse some of the buffers on different stages
*/
static unsigned char tb_fw_hash_buf[HASH_DER_LEN];
static unsigned char tb_fw_config_hash_buf[HASH_DER_LEN];
static unsigned char hw_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];
#ifdef IMAGE_BL2
static unsigned char soc_fw_hash_buf[HASH_DER_LEN];
static unsigned char tos_fw_hash_buf[HASH_DER_LEN];
static unsigned char tos_fw_extra1_hash_buf[HASH_DER_LEN];
@ -74,40 +27,7 @@ static unsigned char content_pk_buf[PK_DER_LEN];
static unsigned char soc_fw_config_hash_buf[HASH_DER_LEN];
static unsigned char tos_fw_config_hash_buf[HASH_DER_LEN];
static unsigned char nt_fw_config_hash_buf[HASH_DER_LEN];
#endif
/*
* 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 hw_config_hash = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_HASH, HW_CONFIG_HASH_OID);
#ifdef IMAGE_BL1
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);
#endif /* IMAGE_BL1 */
#ifdef IMAGE_BL2
static auth_param_type_desc_t non_trusted_nv_ctr = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_NV_CTR, NON_TRUSTED_FW_NVCOUNTER_OID);
static auth_param_type_desc_t trusted_world_pk = AUTH_PARAM_TYPE_DESC(
@ -141,107 +61,6 @@ static auth_param_type_desc_t nt_world_bl_hash = AUTH_PARAM_TYPE_DESC(
static auth_param_type_desc_t nt_fw_config_hash = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_HASH, NON_TRUSTED_FW_CONFIG_HASH_OID);
#endif /* IMAGE_BL2 */
/*
* BL2
*/
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 = &hw_config_hash,
.data = {
.ptr = (void *)hw_config_hash_buf,
.len = (unsigned int)HASH_DER_LEN
}
}
}
};
#ifdef IMAGE_BL1
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
}
}
}
};
#endif /* IMAGE_BL1 */
/* HW Config */
static const auth_img_desc_t hw_config = {
.img_id = HW_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 = &hw_config_hash
}
}
}
};
/* TB FW Config */
#ifdef IMAGE_BL1
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
}
}
}
};
#endif /* IMAGE_BL1 */
#ifdef IMAGE_BL2
/*
* Trusted key certificate
*/
@ -716,117 +535,7 @@ static const auth_img_desc_t nt_fw_config = {
}
}
};
#else /* IMAGE_BL2 */
/*
* 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
}
}
}
};
#endif /* IMAGE_BL2 */
/*
* TBBR Chain of trust definition
*/
#ifdef IMAGE_BL1
static const auth_img_desc_t * const cot_desc[] = {
[TRUSTED_BOOT_FW_CERT_ID] = &trusted_boot_fw_cert,
[BL2_IMAGE_ID] = &bl2_image,
[HW_CONFIG_ID] = &hw_config,
[TB_FW_CONFIG_ID] = &tb_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
};
#else /* IMAGE_BL2 */
static const auth_img_desc_t * const cot_desc[] = {
[TRUSTED_BOOT_FW_CERT_ID] = &trusted_boot_fw_cert,
[HW_CONFIG_ID] = &hw_config,
@ -849,7 +558,6 @@ static const auth_img_desc_t * const cot_desc[] = {
[BL33_IMAGE_ID] = &bl33_image,
[NT_FW_CONFIG_ID] = &nt_fw_config,
};
#endif
/* Register the CoT in the authentication module */
REGISTER_COT(cot_desc);

116
drivers/auth/tbbr/tbbr_cot_common.c Normal file
View File

@ -0,0 +1,116 @@
/*
* Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stddef.h>
#include <platform_def.h>
#include <drivers/auth/mbedtls/mbedtls_config.h>
#include <drivers/auth/auth_mod.h>
#include <drivers/auth/tbbr_cot_common.h>
#if USE_TBBR_DEFS
#include <tools_share/tbbr_oid.h>
#else
#include <platform_oid.h>
#endif
/*
* The platform must allocate buffers to store the authentication parameters
* extracted from the certificates. In this case, because of the way the CoT is
* established, we can reuse some of the buffers on different stages
*/
unsigned char tb_fw_hash_buf[HASH_DER_LEN];
unsigned char tb_fw_config_hash_buf[HASH_DER_LEN];
unsigned char hw_config_hash_buf[HASH_DER_LEN];
unsigned char scp_fw_hash_buf[HASH_DER_LEN];
unsigned char nt_world_bl_hash_buf[HASH_DER_LEN];
/*
* common Parameter type descriptors across BL1 and BL2
*/
auth_param_type_desc_t trusted_nv_ctr = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_NV_CTR, TRUSTED_FW_NVCOUNTER_OID);
auth_param_type_desc_t subject_pk = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_PUB_KEY, 0);
auth_param_type_desc_t sig = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_SIG, 0);
auth_param_type_desc_t sig_alg = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_SIG_ALG, 0);
auth_param_type_desc_t raw_data = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_RAW_DATA, 0);
/* common hash used across BL1 and BL2 */
auth_param_type_desc_t tb_fw_hash = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_HASH, TRUSTED_BOOT_FW_HASH_OID);
auth_param_type_desc_t tb_fw_config_hash = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_HASH, TRUSTED_BOOT_FW_CONFIG_HASH_OID);
auth_param_type_desc_t hw_config_hash = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_HASH, HW_CONFIG_HASH_OID);
/* trusted_boot_fw_cert */
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 = &hw_config_hash,
.data = {
.ptr = (void *)hw_config_hash_buf,
.len = (unsigned int)HASH_DER_LEN
}
}
}
};
/* HW Config */
const auth_img_desc_t hw_config = {
.img_id = HW_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 = &hw_config_hash
}
}
}
};

36
include/common/tbbr/cot_def.h
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -11,4 +11,38 @@
#define COT_MAX_VERIFIED_PARAMS 4
/*
* Maximum key and hash sizes (in DER format).
*
* Both RSA and ECDSA keys may be used at the same time. In this case, the key
* buffers must be big enough to hold either. As RSA keys are bigger than ECDSA
* ones for all key sizes we support, they impose the minimum size of these
* buffers.
*/
#if TF_MBEDTLS_USE_RSA
#if TF_MBEDTLS_KEY_SIZE == 1024
#define PK_DER_LEN 162
#elif TF_MBEDTLS_KEY_SIZE == 2048
#define PK_DER_LEN 294
#elif TF_MBEDTLS_KEY_SIZE == 3072
#define PK_DER_LEN 422
#elif TF_MBEDTLS_KEY_SIZE == 4096
#define PK_DER_LEN 550
#else
#error "Invalid value for TF_MBEDTLS_KEY_SIZE"
#endif
#else /* Only using ECDSA keys. */
#define PK_DER_LEN 91
#endif
#if TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA256
#define HASH_DER_LEN 51
#elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA384
#define HASH_DER_LEN 67
#elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA512
#define HASH_DER_LEN 83
#else
#error "Invalid value for TF_MBEDTLS_HASH_ALG_ID"
#endif
#endif /* COT_DEF_H */

31
include/drivers/auth/tbbr_cot_common.h Normal file
View File

@ -0,0 +1,31 @@
/*
* Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef TBBR_COT_COMMON_H
#define TBBR_COT_COMMON_H
#include <drivers/auth/auth_mod.h>
extern unsigned char tb_fw_hash_buf[HASH_DER_LEN];
extern unsigned char tb_fw_config_hash_buf[HASH_DER_LEN];
extern unsigned char hw_config_hash_buf[HASH_DER_LEN];
extern unsigned char scp_fw_hash_buf[HASH_DER_LEN];
extern unsigned char nt_world_bl_hash_buf[HASH_DER_LEN];
extern auth_param_type_desc_t trusted_nv_ctr;
extern auth_param_type_desc_t subject_pk;
extern auth_param_type_desc_t sig;
extern auth_param_type_desc_t sig_alg;
extern auth_param_type_desc_t raw_data;
extern auth_param_type_desc_t tb_fw_hash;
extern auth_param_type_desc_t tb_fw_config_hash;
extern auth_param_type_desc_t hw_config_hash;
extern const auth_img_desc_t trusted_boot_fw_cert;
extern const auth_img_desc_t hw_config;
#endif /* TBBR_COT_COMMON_H */

6
plat/arm/common/arm_common.mk
View File

@ -297,7 +297,7 @@ ifneq (${TRUSTED_BOARD_BOOT},0)
# Include the selected chain of trust sources.
ifeq (${COT},tbbr)
AUTH_SOURCES += drivers/auth/tbbr/tbbr_cot.c
AUTH_SOURCES += drivers/auth/tbbr/tbbr_cot_common.c
else ifeq (${COT},dualroot)
AUTH_SOURCES += drivers/auth/dualroot/cot.c
else
@ -307,10 +307,12 @@ ifneq (${TRUSTED_BOARD_BOOT},0)
BL1_SOURCES += ${AUTH_SOURCES} \
bl1/tbbr/tbbr_img_desc.c \
plat/arm/common/arm_bl1_fwu.c \
drivers/auth/tbbr/tbbr_cot_bl1.c \
plat/common/tbbr/plat_tbbr.c
BL2_SOURCES += ${AUTH_SOURCES} \
plat/common/tbbr/plat_tbbr.c
plat/common/tbbr/plat_tbbr.c \
drivers/auth/tbbr/tbbr_cot_bl2.c
$(eval $(call TOOL_ADD_IMG,ns_bl2u,--fwu,FWU_))

3
plat/brcm/board/common/board_common.mk
View File

@ -213,7 +213,8 @@ KEY_ALG := rsa_1_5
AUTH_SOURCES += drivers/auth/auth_mod.c \
drivers/auth/crypto_mod.c \
drivers/auth/img_parser_mod.c \
drivers/auth/tbbr/tbbr_cot.c
drivers/auth/tbbr/tbbr_cot_common.c \
drivers/auth/tbbr/tbbr_cot_bl2.c
BL2_SOURCES += ${AUTH_SOURCES}

10
plat/hisilicon/hikey/platform.mk
View File

@ -1,5 +1,5 @@
#
# Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
# Copyright (c) 2017-2020, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@ -126,17 +126,19 @@ include drivers/auth/mbedtls/mbedtls_x509.mk
AUTH_SOURCES := drivers/auth/auth_mod.c \
drivers/auth/crypto_mod.c \
drivers/auth/img_parser_mod.c \
drivers/auth/tbbr/tbbr_cot.c
drivers/auth/tbbr/tbbr_cot_common.c
BL1_SOURCES += ${AUTH_SOURCES} \
plat/common/tbbr/plat_tbbr.c \
plat/hisilicon/hikey/hikey_tbbr.c \
plat/hisilicon/hikey/hikey_rotpk.S
plat/hisilicon/hikey/hikey_rotpk.S \
drivers/auth/tbbr/tbbr_cot_bl1.c
BL2_SOURCES += ${AUTH_SOURCES} \
plat/common/tbbr/plat_tbbr.c \
plat/hisilicon/hikey/hikey_tbbr.c \
plat/hisilicon/hikey/hikey_rotpk.S
plat/hisilicon/hikey/hikey_rotpk.S \
drivers/auth/tbbr/tbbr_cot_bl2.c
ROT_KEY = $(BUILD_PLAT)/rot_key.pem
ROTPK_HASH = $(BUILD_PLAT)/rotpk_sha256.bin

10
plat/hisilicon/hikey960/platform.mk
View File

@ -1,5 +1,5 @@
#
# Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
# Copyright (c) 2017-2020, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@ -118,17 +118,19 @@ include drivers/auth/mbedtls/mbedtls_x509.mk
AUTH_SOURCES := drivers/auth/auth_mod.c \
drivers/auth/crypto_mod.c \
drivers/auth/img_parser_mod.c \
drivers/auth/tbbr/tbbr_cot.c
drivers/auth/tbbr/tbbr_cot_common.c
BL1_SOURCES += ${AUTH_SOURCES} \
plat/common/tbbr/plat_tbbr.c \
plat/hisilicon/hikey960/hikey960_tbbr.c \
plat/hisilicon/hikey960/hikey960_rotpk.S
plat/hisilicon/hikey960/hikey960_rotpk.S \
drivers/auth/tbbr/tbbr_cot_bl1.c
BL2_SOURCES += ${AUTH_SOURCES} \
plat/common/tbbr/plat_tbbr.c \
plat/hisilicon/hikey960/hikey960_tbbr.c \
plat/hisilicon/hikey960/hikey960_rotpk.S
plat/hisilicon/hikey960/hikey960_rotpk.S \
drivers/auth/tbbr/tbbr_cot_bl2.c
ROT_KEY = $(BUILD_PLAT)/rot_key.pem
ROTPK_HASH = $(BUILD_PLAT)/rotpk_sha256.bin

7
plat/imx/imx7/common/imx7.mk
View File

@ -1,5 +1,5 @@
#
# Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
# Copyright (c) 2018-2020, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@ -58,12 +58,13 @@ include drivers/auth/mbedtls/mbedtls_x509.mk
AUTH_SOURCES := drivers/auth/auth_mod.c \
drivers/auth/crypto_mod.c \
drivers/auth/img_parser_mod.c \
drivers/auth/tbbr/tbbr_cot.c
drivers/auth/tbbr/tbbr_cot_common.c
BL2_SOURCES += ${AUTH_SOURCES} \
plat/common/tbbr/plat_tbbr.c \
plat/imx/imx7/common/imx7_trusted_boot.c \
plat/imx/imx7/common/imx7_rotpk.S
plat/imx/imx7/common/imx7_rotpk.S \
drivers/auth/tbbr/tbbr_cot_bl2.c
ROT_KEY = $(BUILD_PLAT)/rot_key.pem
ROTPK_HASH = $(BUILD_PLAT)/rotpk_sha256.bin

8
plat/qemu/qemu/platform.mk
View File

@ -59,18 +59,20 @@ ifneq (${TRUSTED_BOARD_BOOT},0)
AUTH_SOURCES := drivers/auth/auth_mod.c \
drivers/auth/crypto_mod.c \
drivers/auth/img_parser_mod.c \
drivers/auth/tbbr/tbbr_cot.c
drivers/auth/tbbr/tbbr_cot_common.c
BL1_SOURCES += ${AUTH_SOURCES} \
bl1/tbbr/tbbr_img_desc.c \
plat/common/tbbr/plat_tbbr.c \
${PLAT_QEMU_COMMON_PATH}/qemu_trusted_boot.c \
$(PLAT_QEMU_COMMON_PATH)/qemu_rotpk.S
$(PLAT_QEMU_COMMON_PATH)/qemu_rotpk.S \
drivers/auth/tbbr/tbbr_cot_bl1.c
BL2_SOURCES += ${AUTH_SOURCES} \
plat/common/tbbr/plat_tbbr.c \
${PLAT_QEMU_COMMON_PATH}/qemu_trusted_boot.c \
$(PLAT_QEMU_COMMON_PATH)/qemu_rotpk.S
$(PLAT_QEMU_COMMON_PATH)/qemu_rotpk.S \
drivers/auth/tbbr/tbbr_cot_bl2.c
ROT_KEY = $(BUILD_PLAT)/rot_key.pem
ROTPK_HASH = $(BUILD_PLAT)/rotpk_sha256.bin

10
plat/rpi/rpi3/platform.mk
View File

@ -1,5 +1,5 @@
#
# Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
# Copyright (c) 2013-2020, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@ -185,18 +185,20 @@ ifneq (${TRUSTED_BOARD_BOOT},0)
AUTH_SOURCES := drivers/auth/auth_mod.c \
drivers/auth/crypto_mod.c \
drivers/auth/img_parser_mod.c \
drivers/auth/tbbr/tbbr_cot.c
drivers/auth/tbbr/tbbr_cot_common.c
BL1_SOURCES += ${AUTH_SOURCES} \
bl1/tbbr/tbbr_img_desc.c \
plat/common/tbbr/plat_tbbr.c \
plat/rpi/common/rpi3_trusted_boot.c \
plat/rpi/common/rpi3_rotpk.S
plat/rpi/common/rpi3_rotpk.S \
drivers/auth/tbbr/tbbr_cot_bl1.c
BL2_SOURCES += ${AUTH_SOURCES} \
plat/common/tbbr/plat_tbbr.c \
plat/rpi/common/rpi3_trusted_boot.c \
plat/rpi/common/rpi3_rotpk.S
plat/rpi/common/rpi3_rotpk.S \
drivers/auth/tbbr/tbbr_cot_bl2.c
ROT_KEY = $(BUILD_PLAT)/rot_key.pem
ROTPK_HASH = $(BUILD_PLAT)/rotpk_sha256.bin

3
plat/socionext/uniphier/platform.mk
View File

@ -92,7 +92,8 @@ include drivers/auth/mbedtls/mbedtls_x509.mk
BL2_SOURCES += drivers/auth/auth_mod.c \
drivers/auth/crypto_mod.c \
drivers/auth/img_parser_mod.c \
drivers/auth/tbbr/tbbr_cot.c \
drivers/auth/tbbr/tbbr_cot_common.c \
drivers/auth/tbbr/tbbr_cot_bl2.c \
plat/common/tbbr/plat_tbbr.c \
$(PLAT_PATH)/uniphier_rotpk.S \
$(PLAT_PATH)/uniphier_tbbr.c