[PATCH 07/12] firmware: stratix10-svc: ECDSA Hash signing

[tien . sung . ang]

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

To support command to send a digital signature signing request
on a data blob.

Signed-off-by: Ang Tien Sung <tien.sung.ang@xxxxxxxxx>
---
 drivers/firmware/stratix10-svc.c              | 21 ++++++++
 include/linux/firmware/intel/stratix10-smc.h  | 49 +++++++++++++++++++
 .../firmware/intel/stratix10-svc-client.h     |  7 ++-
 3 files changed, 76 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index f8d23b8d2f62..642478ce2855 100644
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -334,6 +334,7 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data,
 	case COMMAND_FCS_CRYPTO_AES_CRYPT_INIT:
 	case COMMAND_FCS_CRYPTO_GET_DIGEST_INIT:
 	case COMMAND_FCS_CRYPTO_MAC_VERIFY_INIT:
+	case COMMAND_FCS_CRYPTO_ECDSA_HASH_SIGNING_INIT:
 		cb_data->status = BIT(SVC_STATUS_OK);
 		break;
 	case COMMAND_RECONFIG_DATA_SUBMIT:
@@ -375,6 +376,7 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data,
 	case COMMAND_FCS_CRYPTO_GET_DIGEST_FINALIZE:
 	case COMMAND_FCS_CRYPTO_MAC_VERIFY_UPDATE:
 	case COMMAND_FCS_CRYPTO_MAC_VERIFY_FINALIZE:
+	case COMMAND_FCS_CRYPTO_ECDSA_HASH_SIGNING_FINALIZE:
 		cb_data->status = BIT(SVC_STATUS_OK);
 		cb_data->kaddr2 = svc_pa_to_va(res.a2);
 		cb_data->kaddr3 = &res.a3;
@@ -657,6 +659,23 @@ static int svc_normal_to_secure_thread(void *data)
 			a7 = pdata->arg[2];
 			break;
 
+		case COMMAND_FCS_CRYPTO_ECDSA_HASH_SIGNING_INIT:
+			a0 = INTEL_SIP_SMC_FCS_ECDSA_HASH_SIGNING_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_ECDSA_HASH_SIGNING_FINALIZE:
+			a0 = INTEL_SIP_SMC_FCS_ECDSA_HASH_SIGNING_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;
+			break;
 		/* for polling */
 		case COMMAND_POLL_SERVICE_STATUS:
 			a0 = INTEL_SIP_SMC_SERVICE_COMPLETED;
@@ -752,6 +771,8 @@ static int svc_normal_to_secure_thread(void *data)
 			case COMMAND_FCS_CRYPTO_MAC_VERIFY_UPDATE:
 			case COMMAND_FCS_CRYPTO_MAC_VERIFY_FINALIZE:
 
+			case COMMAND_FCS_CRYPTO_ECDSA_HASH_SIGNING_INIT:
+			case COMMAND_FCS_CRYPTO_ECDSA_HASH_SIGNING_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 25ca40607ebc..3283269daf45 100644
--- a/include/linux/firmware/intel/stratix10-smc.h
+++ b/include/linux/firmware/intel/stratix10-smc.h
@@ -956,4 +956,53 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
 #define INTEL_SIP_SMC_FCS_MAC_VERIFY_FINALIZE \
 	INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FCS_MAC_VERIFY_FINALIZE)
 
+/**
+ * Request INTEL_SIP_SMC_FCS_ECDSA_HASH_SIGNING_INIT
+ * Sync call to sends digital signature signing request on a data blob
+ *
+ * Call register usage:
+ * a0 INTEL_SIP_SMC_FCS_ECDSA_HASH_SIGNING_INIT
+ * a1 session ID
+ * a2 context ID
+ * a3 key UID
+ * a4 size of crypto parameter data
+ * a5 size of crypto parameter data
+ *      3:0     ECC algoritim
+ *      63:4    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-a3 not used
+ */
+#define INTEL_SIP_SMC_FUNCID_FCS_ECDSA_HASH_SIGNING_INIT 125
+#define INTEL_SIP_SMC_FCS_ECDSA_HASH_SIGNING_INIT \
+	INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FCS_ECDSA_HASH_SIGNING_INIT)
+
+/**
+ * Request INTEL_SIP_SMC_FCS_ECDSA_HASH_SIGNING_FINALIZE
+ * Sync call to sends digital signature signing request on a data blob
+ *
+ * Call register usage:
+ * a0 INTEL_SIP_SMC_FCS_ECDSA_HASH_SIGNING_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_ECDSA_HASH_SIGNING_FINALIZE 127
+#define INTEL_SIP_SMC_FCS_ECDSA_HASH_SIGNING_FINALIZE \
+	INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_ECDSA_HASH_SIGNING_FINALIZE)
 #endif
diff --git a/include/linux/firmware/intel/stratix10-svc-client.h b/include/linux/firmware/intel/stratix10-svc-client.h
index 7f04fae175ed..9569a55fb3ab 100644
--- a/include/linux/firmware/intel/stratix10-svc-client.h
+++ b/include/linux/firmware/intel/stratix10-svc-client.h
@@ -168,6 +168,10 @@ struct stratix10_svc_chan;
  * the integrity and authenticity of a blob, return status is
  * SVC_STATUS_OK or SVC_STATUS_ERROR
  *
+ * @COMMAND_FCS_CRYPTO_ECDSA_HASH_SIGNING (INIT and FINALIZE): send
+ * digital signature signing request on a data blob, return status is
+ * SVC_STATUS_OK or SVC_STATUS_ERROR
+ *
  */
 enum stratix10_svc_command_code {
 	/* for FPGA */
@@ -210,7 +214,8 @@ enum stratix10_svc_command_code {
 	COMMAND_FCS_CRYPTO_MAC_VERIFY_INIT,
 	COMMAND_FCS_CRYPTO_MAC_VERIFY_UPDATE,
 	COMMAND_FCS_CRYPTO_MAC_VERIFY_FINALIZE,
-
+	COMMAND_FCS_CRYPTO_ECDSA_HASH_SIGNING_INIT,
+	COMMAND_FCS_CRYPTO_ECDSA_HASH_SIGNING_FINALIZE,
 	/* Non-mailbox SMC Call */
 	COMMAND_SMC_SVC_VERSION = 200,
 };
-- 
2.25.1