feat(intel): support HMAC SHA-2 MAC verify request
This command sends request on checking the integrity and authenticity
of a blob by comparing the calculated MAC with tagged MAC. The
comparison result will be returned in response.
Signed-off-by: Siew Chin Lim <elly.siew.chin.lim@intel.com>
Signed-off-by: Boon Khai Ng <boon.khai.ng@intel.com>
Signed-off-by: Sieu Mun Tang <sieu.mun.tang@intel.com>
Change-Id: Ifefdf67f088d7612d2ec2459d71faf2ec8181222
diff --git a/plat/intel/soc/common/include/socfpga_fcs.h b/plat/intel/soc/common/include/socfpga_fcs.h
index db8f558..5c1a76e 100644
--- a/plat/intel/soc/common/include/socfpga_fcs.h
+++ b/plat/intel/soc/common/include/socfpga_fcs.h
@@ -66,6 +66,8 @@
#define FCS_GET_DIGEST_CMD_MAX_WORD_SIZE 7U
#define FCS_GET_DIGEST_RESP_MAX_WORD_SIZE 19U
+#define FCS_MAC_VERIFY_CMD_MAX_WORD_SIZE 23U
+#define FCS_MAC_VERIFY_RESP_MAX_WORD_SIZE 4U
#define FCS_SHA_HMAC_CRYPTO_PARAM_SIZE_OFFSET 8U
/* FCS Payload Structure */
typedef struct fcs_rng_payload_t {
@@ -179,4 +181,12 @@
uint64_t dst_addr, uint32_t *dst_size,
uint32_t *mbox_error);
+int intel_fcs_mac_verify_init(uint32_t session_id, uint32_t context_id,
+ uint32_t key_id, uint32_t param_size,
+ uint64_t param_data, uint32_t *mbox_error);
+int intel_fcs_mac_verify_finalize(uint32_t session_id, uint32_t context_id,
+ uint32_t src_addr, uint32_t src_size,
+ uint64_t dst_addr, uint32_t *dst_size,
+ uint32_t data_size, uint32_t *mbox_error);
+
#endif /* SOCFPGA_FCS_H */
diff --git a/plat/intel/soc/common/include/socfpga_mailbox.h b/plat/intel/soc/common/include/socfpga_mailbox.h
index 4984020..a04264d 100644
--- a/plat/intel/soc/common/include/socfpga_mailbox.h
+++ b/plat/intel/soc/common/include/socfpga_mailbox.h
@@ -76,6 +76,7 @@
#define MBOX_FCS_DECRYPT_REQ 0x7F
#define MBOX_FCS_RANDOM_GEN 0x80
#define MBOX_FCS_GET_DIGEST_REQ 0x82
+#define MBOX_FCS_MAC_VERIFY_REQ 0x83
#define MBOX_FCS_OPEN_CS_SESSION 0xA0
#define MBOX_FCS_CLOSE_CS_SESSION 0xA1
#define MBOX_FCS_IMPORT_CS_KEY 0xA5
diff --git a/plat/intel/soc/common/include/socfpga_sip_svc.h b/plat/intel/soc/common/include/socfpga_sip_svc.h
index f05e861..379a123 100644
--- a/plat/intel/soc/common/include/socfpga_sip_svc.h
+++ b/plat/intel/soc/common/include/socfpga_sip_svc.h
@@ -95,6 +95,8 @@
#define INTEL_SIP_SMC_FCS_GET_CS_KEY_INFO 0xC2000073
#define INTEL_SIP_SMC_FCS_GET_DIGEST_INIT 0xC2000077
#define INTEL_SIP_SMC_FCS_GET_DIGEST_FINALIZE 0xC2000079
+#define INTEL_SIP_SMC_FCS_MAC_VERIFY_INIT 0xC200007A
+#define INTEL_SIP_SMC_FCS_MAC_VERIFY_FINALIZE 0xC200007C
#define INTEL_SIP_SMC_FCS_SHA_MODE_MASK 0xF
#define INTEL_SIP_SMC_FCS_DIGEST_SIZE_MASK 0xF
diff --git a/plat/intel/soc/common/sip/socfpga_sip_fcs.c b/plat/intel/soc/common/sip/socfpga_sip_fcs.c
index 809037e..7da01fd 100644
--- a/plat/intel/soc/common/sip/socfpga_sip_fcs.c
+++ b/plat/intel/soc/common/sip/socfpga_sip_fcs.c
@@ -13,6 +13,7 @@
/* FCS static variables */
static fcs_crypto_service_data fcs_sha_get_digest_param;
+static fcs_crypto_service_data fcs_sha_mac_verify_param;
bool is_size_4_bytes_aligned(uint32_t size)
{
@@ -797,3 +798,98 @@
return INTEL_SIP_SMC_STATUS_OK;
}
+
+int intel_fcs_mac_verify_init(uint32_t session_id, uint32_t context_id,
+ uint32_t key_id, uint32_t param_size,
+ uint64_t param_data, uint32_t *mbox_error)
+{
+ return intel_fcs_crypto_service_init(session_id, context_id,
+ key_id, param_size, param_data,
+ (void *) &fcs_sha_mac_verify_param,
+ mbox_error);
+}
+
+int intel_fcs_mac_verify_finalize(uint32_t session_id, uint32_t context_id,
+ uint32_t src_addr, uint32_t src_size,
+ uint64_t dst_addr, uint32_t *dst_size,
+ uint32_t data_size, uint32_t *mbox_error)
+{
+ int status;
+ uint32_t i;
+ uint32_t resp_len = *dst_size / MBOX_WORD_BYTE;
+ uint32_t payload[FCS_MAC_VERIFY_CMD_MAX_WORD_SIZE] = {0U};
+ uintptr_t mac_offset;
+
+ if (dst_size == NULL || mbox_error == NULL) {
+ return INTEL_SIP_SMC_STATUS_REJECTED;
+ }
+
+ if (fcs_sha_mac_verify_param.session_id != session_id ||
+ fcs_sha_mac_verify_param.context_id != context_id) {
+ return INTEL_SIP_SMC_STATUS_REJECTED;
+ }
+
+ if (data_size >= src_size) {
+ return INTEL_SIP_SMC_STATUS_REJECTED;
+ }
+
+ if (!is_size_4_bytes_aligned(src_size) ||
+ !is_8_bytes_aligned(data_size)) {
+ return INTEL_SIP_SMC_STATUS_REJECTED;
+ }
+
+ if (!is_address_in_ddr_range(src_addr, src_size) ||
+ !is_address_in_ddr_range(dst_addr, *dst_size)) {
+ return INTEL_SIP_SMC_STATUS_REJECTED;
+ }
+
+ /* Prepare command payload */
+ i = 0;
+ /* Crypto header */
+ payload[i] = fcs_sha_mac_verify_param.session_id;
+ i++;
+ payload[i] = fcs_sha_mac_verify_param.context_id;
+ i++;
+ payload[i] = fcs_sha_mac_verify_param.crypto_param_size
+ & FCS_CS_FIELD_SIZE_MASK;
+ payload[i] |= (FCS_CS_FIELD_FLAG_INIT | FCS_CS_FIELD_FLAG_UPDATE
+ | FCS_CS_FIELD_FLAG_FINALIZE)
+ << FCS_CS_FIELD_FLAG_OFFSET;
+ i++;
+ payload[i] = fcs_sha_mac_verify_param.key_id;
+ i++;
+ /* Crypto parameters */
+ payload[i] = ((fcs_sha_mac_verify_param.crypto_param
+ >> INTEL_SIP_SMC_FCS_DIGEST_SIZE_OFFSET)
+ & INTEL_SIP_SMC_FCS_DIGEST_SIZE_MASK)
+ << FCS_SHA_HMAC_CRYPTO_PARAM_SIZE_OFFSET;
+ i++;
+ /* Data source address and size */
+ payload[i] = src_addr;
+ i++;
+ payload[i] = data_size;
+ i++;
+ /* Copy mac data to command */
+ mac_offset = src_addr + data_size;
+ memcpy((uint8_t *) &payload[i], (uint8_t *) mac_offset,
+ src_size - data_size);
+
+ i += (src_size - data_size) / MBOX_WORD_BYTE;
+
+ status = mailbox_send_cmd(MBOX_JOB_ID, MBOX_FCS_MAC_VERIFY_REQ,
+ payload, i, CMD_CASUAL,
+ (uint32_t *) dst_addr, &resp_len);
+
+ memset((void *)&fcs_sha_mac_verify_param, 0,
+ sizeof(fcs_crypto_service_data));
+
+ if (status < 0) {
+ *mbox_error = -status;
+ return INTEL_SIP_SMC_STATUS_ERROR;
+ }
+
+ *dst_size = resp_len * MBOX_WORD_BYTE;
+ flush_dcache_range(dst_addr, *dst_size);
+
+ return INTEL_SIP_SMC_STATUS_OK;
+}
diff --git a/plat/intel/soc/common/socfpga_sip_svc.c b/plat/intel/soc/common/socfpga_sip_svc.c
index f9a376e..3f92cf6 100644
--- a/plat/intel/soc/common/socfpga_sip_svc.c
+++ b/plat/intel/soc/common/socfpga_sip_svc.c
@@ -634,7 +634,7 @@
int status = INTEL_SIP_SMC_STATUS_OK;
int mbox_status;
unsigned int len_in_resp;
- u_register_t x5, x6;
+ u_register_t x5, x6, x7;
switch (smc_fid) {
case SIP_SVC_UID:
@@ -880,6 +880,20 @@
x4, x5, (uint32_t *) &x6, &mbox_error);
SMC_RET4(handle, status, mbox_error, x5, x6);
+ case INTEL_SIP_SMC_FCS_MAC_VERIFY_INIT:
+ x5 = SMC_GET_GP(handle, CTX_GPREG_X5);
+ status = intel_fcs_mac_verify_init(x1, x2, x3,
+ x4, x5, &mbox_error);
+ SMC_RET2(handle, status, mbox_error);
+
+ case INTEL_SIP_SMC_FCS_MAC_VERIFY_FINALIZE:
+ x5 = SMC_GET_GP(handle, CTX_GPREG_X5);
+ x6 = SMC_GET_GP(handle, CTX_GPREG_X6);
+ x7 = SMC_GET_GP(handle, CTX_GPREG_X7);
+ status = intel_fcs_mac_verify_finalize(x1, x2, x3,
+ x4, x5, (uint32_t *) &x6, x7, &mbox_error);
+ SMC_RET4(handle, status, mbox_error, x5, x6);
+
case INTEL_SIP_SMC_GET_ROM_PATCH_SHA384:
status = intel_fcs_get_rom_patch_sha384(x1, &retval64,
&mbox_error);