xilinx: versal: Add support of PM_GET_TRUSTZONE_VERSION API

PM_GET_TRUSTZONE_VERSION API is required to use zynqmp-firmware
driver for versal. Add support of PM_GET_TRUSTZONE_VERSION API
for versal.
Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: Ie1c859890096024cc8be67386e3fd0f5f8a4385f

plat/xilinx/versal/include/plat_pm_common.h

@@ -19,4 +19,8 @@
 #define PAYLOAD_ARG_CNT		6U
 #define PAYLOAD_ARG_SIZE	4U	/* size in bytes */
 
+#define VERSAL_TZ_VERSION_MAJOR		1
+#define VERSAL_TZ_VERSION_MINOR		0
+#define VERSAL_TZ_VERSION		((VERSAL_TZ_VERSION_MAJOR << 16) | \
+					VERSAL_TZ_VERSION_MINOR)
 #endif /* PLAT_PM_COMMON_H */

plat/xilinx/versal/pm_service/pm_svc_main.c

@@ -17,6 +17,8 @@
 #include "pm_client.h"
 #include "pm_ipi.h"
 
+#define PM_GET_TRUSTZONE_VERSION	0xa03
+
 /* pm_up = true - UP, pm_up = false - DOWN */
 static bool pm_up;
 
@@ -255,6 +257,10 @@ uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
 		SMC_RET1(handle, (uint64_t)ret | ((uint64_t)mode << 32));
 	}
 
+	case PM_GET_TRUSTZONE_VERSION:
+		SMC_RET1(handle, (uint64_t)PM_RET_SUCCESS |
+			 ((uint64_t)VERSAL_TZ_VERSION << 32));
+
 	default:
 		WARN("Unimplemented PM Service Call: 0x%x\n", smc_fid);
 		SMC_RET1(handle, SMC_UNK);