[PATCH 06/12] firmware: stratix10-svc: HMAC SHA2 verify

From: tien . sung . ang
Date: Thu Jun 22 2023 - 23:22:28 EST

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From: Ang Tien Sung <tien.sung.ang@xxxxxxxxx>

This supports a new command that sends request to check the integrity
and authenticity of a blob by comparing the calculated MAC with tagged
MAC. The whole blob crypto process request can be split into multiple
commands by stage commands of INIT, UPDATE and FINALIZE.

Signed-off-by: Ang Tien Sung <tien.sung.ang@xxxxxxxxx>
---
drivers/firmware/stratix10-svc.c | 36 +++++++++
include/linux/firmware/intel/stratix10-smc.h | 81 +++++++++++++++++++
.../firmware/intel/stratix10-svc-client.h | 7 ++
3 files changed, 124 insertions(+)

diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index 24f727017756..f8d23b8d2f62 100644
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -333,6 +333,7 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data,
case COMMAND_FCS_CRYPTO_REMOVE_KEY:
case COMMAND_FCS_CRYPTO_AES_CRYPT_INIT:
case COMMAND_FCS_CRYPTO_GET_DIGEST_INIT:
+ case COMMAND_FCS_CRYPTO_MAC_VERIFY_INIT:
cb_data->status = BIT(SVC_STATUS_OK);
break;
case COMMAND_RECONFIG_DATA_SUBMIT:
@@ -372,6 +373,8 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data,
case COMMAND_FCS_CRYPTO_AES_CRYPT_FINALIZE:
case COMMAND_FCS_CRYPTO_GET_DIGEST_UPDATE:
case COMMAND_FCS_CRYPTO_GET_DIGEST_FINALIZE:
+ case COMMAND_FCS_CRYPTO_MAC_VERIFY_UPDATE:
+ case COMMAND_FCS_CRYPTO_MAC_VERIFY_FINALIZE:
cb_data->status = BIT(SVC_STATUS_OK);
cb_data->kaddr2 = svc_pa_to_va(res.a2);
cb_data->kaddr3 = &res.a3;
@@ -625,6 +628,35 @@ static int svc_normal_to_secure_thread(void *data)
a5 = (unsigned long)pdata->paddr_output;
a6 = (unsigned long)pdata->size_output;
break;
+ case COMMAND_FCS_CRYPTO_MAC_VERIFY_INIT:
+ a0 = INTEL_SIP_SMC_FCS_MAC_VERIFY_INIT;
+ a1 = pdata->arg[0];
+ a2 = pdata->arg[1];
+ a3 = pdata->arg[2];
+ a4 = pdata->arg[3];
+ a5 = pdata->arg[4];
+ break;
+ case COMMAND_FCS_CRYPTO_MAC_VERIFY_UPDATE:
+ a0 = INTEL_SIP_SMC_FCS_MAC_VERIFY_UPDATE;
+ a1 = pdata->arg[0];
+ a2 = pdata->arg[1];
+ a3 = (unsigned long)pdata->paddr;
+ a4 = (unsigned long)pdata->size;
+ a5 = (unsigned long)pdata->paddr_output;
+ a6 = (unsigned long)pdata->size_output;
+ a7 = pdata->arg[2];
+ break;
+ case COMMAND_FCS_CRYPTO_MAC_VERIFY_FINALIZE:
+ a0 = INTEL_SIP_SMC_FCS_MAC_VERIFY_FINALIZE;
+ a1 = pdata->arg[0];
+ a2 = pdata->arg[1];
+ a3 = (unsigned long)pdata->paddr;
+ a4 = (unsigned long)pdata->size;
+ a5 = (unsigned long)pdata->paddr_output;
+ a6 = (unsigned long)pdata->size_output;
+ a7 = pdata->arg[2];
+ break;
+
/* for polling */
case COMMAND_POLL_SERVICE_STATUS:
a0 = INTEL_SIP_SMC_SERVICE_COMPLETED;
@@ -716,6 +748,10 @@ static int svc_normal_to_secure_thread(void *data)
case COMMAND_FCS_CRYPTO_GET_DIGEST_INIT:
case COMMAND_FCS_CRYPTO_GET_DIGEST_UPDATE:
case COMMAND_FCS_CRYPTO_GET_DIGEST_FINALIZE:
+ case COMMAND_FCS_CRYPTO_MAC_VERIFY_INIT:
+ case COMMAND_FCS_CRYPTO_MAC_VERIFY_UPDATE:
+ case COMMAND_FCS_CRYPTO_MAC_VERIFY_FINALIZE:
+
cbdata->status = BIT(SVC_STATUS_INVALID_PARAM);
cbdata->kaddr1 = NULL;
cbdata->kaddr2 = NULL;
diff --git a/include/linux/firmware/intel/stratix10-smc.h b/include/linux/firmware/intel/stratix10-smc.h
index 47dbef588412..25ca40607ebc 100644
--- a/include/linux/firmware/intel/stratix10-smc.h
+++ b/include/linux/firmware/intel/stratix10-smc.h
@@ -875,4 +875,85 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
#define INTEL_SIP_SMC_FUNCID_FCS_GET_DIGEST_FINALIZE 121
#define INTEL_SIP_SMC_FCS_GET_DIGEST_FINALIZE \
INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FCS_GET_DIGEST_FINALIZE)
+
+/**
+ * Request INTEL_SIP_SMC_FCS_MAC_VERIFY_INIT
+ * Sync call to check the integrity and authenticity of a blob by comparing
+ * the calculated MAC with tagged MAC
+ *
+ * Call register usage:
+ * a0 INTEL_SIP_SMC_FCS_MAC_VERIFY_INIT
+ * a1 session ID
+ * a2 context ID
+ * a3 key UID
+ * a4 size of crypto parameter data
+ * a5 crypto parameter data
+ * 3:0 not used
+ * 7:4 digist size
+ * 63:8 not used
+ * a6-a7 not used
+ *
+ * Return status:
+ * a0 INTEL_SIP_SMC_STATUS_OK, INTEL_SIP_SMC_STATUS_NOT_SUPPORTED or
+ * INTEL_SIP_SMC_STATUS_ERROR
+ * a1 mailbox errors if a0 is INTEL_SIP_SMC_STATUS_ERROR
+ * a2 physical address of response data
+ * a3 size of response data
+ */
+#define INTEL_SIP_SMC_FUNCID_FCS_MAC_VERIFY_INIT 122
+#define INTEL_SIP_SMC_FCS_MAC_VERIFY_INIT \
+ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FCS_MAC_VERIFY_INIT)
+
+/**
+ * Request INTEL_SIP_SMC_FCS_MAC_VERIFY_UPDATE
+ * Sync call to check the integrity and authenticity of a blob by comparing
+ * the calculated MAC with tagged MAC
+ *
+ * Call register usage:
+ * a0 INTEL_SIP_SMC_FCS_MAC_VERIFY_UPDATE
+ * a1 session ID
+ * a2 context ID
+ * a3 physical address of source
+ * a4 size of source
+ * a5 physical address of destination
+ * a6 size of destination
+ * a7 not used
+ *
+ * Return status:
+ * a0 INTEL_SIP_SMC_STATUS_OK, INTEL_SIP_SMC_STATUS_NOT_SUPPORTED or
+ * INTEL_SIP_SMC_STATUS_ERROR
+ * a1 mailbox errors if a0 is INTEL_SIP_SMC_STATUS_ERROR
+ * a2 physical address of response data
+ * a3 size of response data
+ */
+#define INTEL_SIP_SMC_FUNCID_FCS_MAC_VERIFY_UPDATE 123
+#define INTEL_SIP_SMC_FCS_MAC_VERIFY_UPDATE \
+ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FCS_MAC_VERIFY_UPDATE)
+
+/**
+ * Request INTEL_SIP_SMC_FCS_MAC_VERIFY_FINALIZE
+ * Sync call to check the integrity and authenticity of a blob by comparing
+ * the calculated MAC with tagged MAC
+ *
+ * Call register usage:
+ * a0 INTEL_SIP_SMC_FCS_MAC_VERIFY_FINALIZE
+ * a1 session ID
+ * a2 context ID
+ * a3 physical address of source
+ * a4 size of source
+ * a5 physical address of destation
+ * a6 size of destation
+ * a7 not used
+ *
+ * Return status:
+ * a0 INTEL_SIP_SMC_STATUS_OK, INTEL_SIP_SMC_STATUS_NOT_SUPPORTED or
+ * INTEL_SIP_SMC_STATUS_ERROR
+ * a1 mailbox errors if a0 is INTEL_SIP_SMC_STATUS_ERROR
+ * a2 physical address of response data
+ * a3 size of response data
+ */
+#define INTEL_SIP_SMC_FUNCID_FCS_MAC_VERIFY_FINALIZE 124
+#define INTEL_SIP_SMC_FCS_MAC_VERIFY_FINALIZE \
+ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FCS_MAC_VERIFY_FINALIZE)
+
#endif
diff --git a/include/linux/firmware/intel/stratix10-svc-client.h b/include/linux/firmware/intel/stratix10-svc-client.h
index 48c34def9ac6..7f04fae175ed 100644
--- a/include/linux/firmware/intel/stratix10-svc-client.h
+++ b/include/linux/firmware/intel/stratix10-svc-client.h
@@ -164,6 +164,9 @@ struct stratix10_svc_chan;
* the SHA-2 hash digest on a data block,
* return status is SVC_STATUS_OK or SVC_STATUS_ERROR
*
+ * @COMMAND_FCS_CRYPTO_MAC_VERIFY (INIT, UPDATE and FINALIZE): check
+ * the integrity and authenticity of a blob, return status is
+ * SVC_STATUS_OK or SVC_STATUS_ERROR
*
*/
enum stratix10_svc_command_code {
@@ -204,6 +207,10 @@ enum stratix10_svc_command_code {
COMMAND_FCS_CRYPTO_GET_DIGEST_INIT,
COMMAND_FCS_CRYPTO_GET_DIGEST_UPDATE,
COMMAND_FCS_CRYPTO_GET_DIGEST_FINALIZE,
+ COMMAND_FCS_CRYPTO_MAC_VERIFY_INIT,
+ COMMAND_FCS_CRYPTO_MAC_VERIFY_UPDATE,
+ COMMAND_FCS_CRYPTO_MAC_VERIFY_FINALIZE,
+
/* Non-mailbox SMC Call */
COMMAND_SMC_SVC_VERSION = 200,
};
--
2.25.1

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