feat(intel): support SHA-2 hash digest generation on a blob
This command is to request the SHA-2 hash digest on a blob.
If input has a key, the output shall be key-hash digest.
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: I08cb82d89a8e8f7bfe04f5f01e079ea49fe38cf5
diff --git a/plat/intel/soc/common/sip/socfpga_sip_fcs.c b/plat/intel/soc/common/sip/socfpga_sip_fcs.c
index 7b3069b..809037e 100644
--- a/plat/intel/soc/common/sip/socfpga_sip_fcs.c
+++ b/plat/intel/soc/common/sip/socfpga_sip_fcs.c
@@ -11,6 +11,9 @@
#include "socfpga_mailbox.h"
#include "socfpga_sip_svc.h"
+/* FCS static variables */
+static fcs_crypto_service_data fcs_sha_get_digest_param;
+
bool is_size_4_bytes_aligned(uint32_t size)
{
if ((size % MBOX_WORD_BYTE) != 0U) {
@@ -18,6 +21,42 @@
} else {
return true;
}
+}
+
+static bool is_8_bytes_aligned(uint32_t data)
+{
+ if ((data % (MBOX_WORD_BYTE * 2U)) != 0U) {
+ return false;
+ } else {
+ return true;
+ }
+}
+
+static int intel_fcs_crypto_service_init(uint32_t session_id,
+ uint32_t context_id, uint32_t key_id,
+ uint32_t param_size, uint64_t param_data,
+ fcs_crypto_service_data *data_addr,
+ uint32_t *mbox_error)
+{
+ if (mbox_error == NULL) {
+ return INTEL_SIP_SMC_STATUS_REJECTED;
+ }
+
+ if (param_size != 4) {
+ return INTEL_SIP_SMC_STATUS_REJECTED;
+ }
+
+ memset(data_addr, 0, sizeof(fcs_crypto_service_data));
+
+ data_addr->session_id = session_id;
+ data_addr->context_id = context_id;
+ data_addr->key_id = key_id;
+ data_addr->crypto_param_size = param_size;
+ data_addr->crypto_param = param_data;
+
+ *mbox_error = 0;
+
+ return INTEL_SIP_SMC_STATUS_OK;
}
uint32_t intel_fcs_random_number_gen(uint64_t addr, uint64_t *ret_size,
@@ -673,3 +712,88 @@
return INTEL_SIP_SMC_STATUS_OK;
}
+
+int intel_fcs_get_digest_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_get_digest_param,
+ mbox_error);
+}
+
+int intel_fcs_get_digest_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 *mbox_error)
+{
+ int status;
+ uint32_t i;
+ uint32_t resp_len = *dst_size / MBOX_WORD_BYTE;
+ uint32_t payload[FCS_GET_DIGEST_CMD_MAX_WORD_SIZE] = {0U};
+
+ if (dst_size == NULL || mbox_error == NULL) {
+ return INTEL_SIP_SMC_STATUS_REJECTED;
+ }
+
+ if (fcs_sha_get_digest_param.session_id != session_id ||
+ fcs_sha_get_digest_param.context_id != context_id) {
+ return INTEL_SIP_SMC_STATUS_REJECTED;
+ }
+
+ /* Source data must be 8 bytes aligned */
+ if (!is_8_bytes_aligned(src_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_get_digest_param.session_id;
+ i++;
+ payload[i] = fcs_sha_get_digest_param.context_id;
+ i++;
+ payload[i] = fcs_sha_get_digest_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_get_digest_param.key_id;
+ i++;
+ /* Crypto parameters */
+ payload[i] = fcs_sha_get_digest_param.crypto_param
+ & INTEL_SIP_SMC_FCS_SHA_MODE_MASK;
+ payload[i] |= ((fcs_sha_get_digest_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] = src_size;
+ i++;
+
+ status = mailbox_send_cmd(MBOX_JOB_ID, MBOX_FCS_GET_DIGEST_REQ,
+ payload, i, CMD_CASUAL,
+ (uint32_t *) dst_addr, &resp_len);
+
+ memset((void *)&fcs_sha_get_digest_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;
+}