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/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;
+}