zynqmp: Add new API for processing secure images

This patch adds new API for processing secure images. This API
is used for authentication and decryption of secure images using
xilsecure in pmufw.
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>

plat/xilinx/zynqmp/pm_service/pm_api_sys.c

@@ -1152,3 +1152,17 @@ enum pm_ret_status pm_rsa_core(uint32_t address_high,
 				 size, flags);
 	return pm_ipi_send_sync(primary_proc, payload, NULL, 0);
 }
+
+enum pm_ret_status pm_secure_image(uint32_t address_low,
+				   uint32_t address_high,
+				   uint32_t key_lo,
+				   uint32_t key_hi,
+				   uint32_t *value)
+{
+	uint32_t payload[PAYLOAD_ARG_CNT];
+
+	/* Send request to the PMU */
+	PM_PACK_PAYLOAD5(payload, PM_SECURE_IMAGE, address_high, address_low,
+			 key_hi, key_lo);
+	return pm_ipi_send_sync(primary_proc, payload, value, 2);
+}

plat/xilinx/zynqmp/pm_service/pm_api_sys.h

@@ -160,4 +160,9 @@ enum pm_ret_status pm_rsa_core(uint32_t address_high,
 				    uint32_t address_low,
 				    uint32_t size,
 				    uint32_t flags);
+enum pm_ret_status pm_secure_image(uint32_t address_low,
+				   uint32_t address_high,
+				   uint32_t key_lo,
+				   uint32_t key_hi,
+				   uint32_t *value);
 #endif /* _PM_API_SYS_H_ */

plat/xilinx/zynqmp/pm_service/pm_defs.h

@@ -88,6 +88,7 @@ enum pm_api_id {
 	PM_CLOCK_GETRATE,
 	PM_CLOCK_SETPARENT,
 	PM_CLOCK_GETPARENT,
+	PM_SECURE_IMAGE,
 	PM_API_MAX
 };
 

plat/xilinx/zynqmp/pm_service/pm_svc_main.c

@@ -381,6 +381,16 @@ uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
 				       pm_arg[3]);
 		SMC_RET1(handle, (uint64_t)ret);
 
+	case PM_SECURE_IMAGE:
+	{
+		uint32_t result[2];
+
+		ret = pm_secure_image(pm_arg[0], pm_arg[1], pm_arg[2],
+				      pm_arg[3], &result[0]);
+		SMC_RET2(handle, (uint64_t)ret | ((uint64_t)result[0] << 32),
+			 result[1]);
+	}
+
 	default:
 		WARN("Unimplemented PM Service Call: 0x%x\n", smc_fid);
 		SMC_RET1(handle, SMC_UNK);