firmware: stratix10-svc: To support a command ATF Get Version

We are to support a new SMC Command of hexadecimal 0x200 that returns
the ATF Firmware major and minor version.

Signed-off-by: Ang Tien Sung <tien.sung.ang@intel.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Link: https://lore.kernel.org/r/20220711223140.2307945-6-dinguyen@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index 7fea94f..b4081f4 100644 (file)
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -343,6 +343,11 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data,
                cb_data->status = BIT(SVC_STATUS_OK);
                cb_data->kaddr1 = &res.a1;
                break;
+       case COMMAND_SMC_SVC_VERSION:
+               cb_data->status = BIT(SVC_STATUS_OK);
+               cb_data->kaddr1 = &res.a1;
+               cb_data->kaddr2 = &res.a2;
+               break;
        case COMMAND_RSU_DCMF_VERSION:
                cb_data->status = BIT(SVC_STATUS_OK);
                cb_data->kaddr1 = &res.a1;
@@ -524,6 +529,11 @@ static int svc_normal_to_secure_thread(void *data)
                        a1 = 0;
                        a2 = 0;
                        break;
+               case COMMAND_SMC_SVC_VERSION:
+                       a0 = INTEL_SIP_SMC_SVC_VERSION;
+                       a1 = 0;
+                       a2 = 0;
+                       break;
                default:
                        pr_warn("it shouldn't happen\n");
                        break;

diff --git a/include/linux/firmware/intel/stratix10-smc.h b/include/linux/firmware/intel/stratix10-smc.h
index 8fc4aa4..a718f85 100644 (file)
--- a/include/linux/firmware/intel/stratix10-smc.h
+++ b/include/linux/firmware/intel/stratix10-smc.h
@@ -467,6 +467,24 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
         INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FIRMWARE_VERSION)
 
 /**
+ * Request INTEL_SIP_SMC_SVC_VERSION
+ *
+ * Sync call used to query the SIP SMC API Version
+ *
+ * Call register usage:
+ * a0 INTEL_SIP_SMC_SVC_VERSION
+ * a1-a7 not used
+ *
+ * Return status:
+ * a0 INTEL_SIP_SMC_STATUS_OK
+ * a1 Major
+ * a2 Minor
+ */
+#define INTEL_SIP_SMC_SVC_FUNCID_VERSION 512
+#define INTEL_SIP_SMC_SVC_VERSION \
+       INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_SVC_FUNCID_VERSION)
+
+/**
  * SMC call protocol for FPGA Crypto Service (FCS)
  * FUNCID starts from 90
  */

diff --git a/include/linux/firmware/intel/stratix10-svc-client.h b/include/linux/firmware/intel/stratix10-svc-client.h
index 82a20e6..a776a78 100644 (file)
--- a/include/linux/firmware/intel/stratix10-svc-client.h
+++ b/include/linux/firmware/intel/stratix10-svc-client.h
@@ -114,6 +114,9 @@ struct stratix10_svc_chan;
  * @COMMAND_FIRMWARE_VERSION: query running firmware version, return status
  * is SVC_STATUS_OK or SVC_STATUS_ERROR
  *
+ * @COMMAND_SMC_SVC_VERSION: Non-mailbox SMC SVC API Version,
+ * return status is SVC_STATUS_OK
+ *
  * @COMMAND_RSU_DCMF_STATUS: query firmware for the DCMF status
  * return status is SVC_STATUS_OK or SVC_STATUS_ERROR
  *
@@ -160,6 +163,8 @@ enum stratix10_svc_command_code {
        COMMAND_FCS_RANDOM_NUMBER_GEN,
        /* for general status poll */
        COMMAND_POLL_SERVICE_STATUS = 40,
+       /* Non-mailbox SMC Call */
+       COMMAND_SMC_SVC_VERSION = 200,
 };
 
 /**