zynqmp: pm: Implemented new pm API to load secure images

This patch adds pm_secure_rsaaes() API to provide access to
the xilsecure library for loading secure images
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>

plat/xilinx/zynqmp/pm_service/pm_api_sys.c

@@ -538,6 +538,33 @@ enum pm_ret_status pm_get_chipid(uint32_t *value)
 	return pm_ipi_send_sync(primary_proc, payload, value, 2);
 }
 
+/**
+ * pm_secure_rsaaes() - Load the secure images.
+ *
+ * This function provides access to the xilsecure library to load
+ * the authenticated, encrypted, and authenicated/encrypted images.
+ *
+ * address_low: lower 32-bit Linear memory space address
+ *
+ * address_high: higher 32-bit Linear memory space address
+ *
+ * size:	Number of 32bit words
+ *
+ * @return      Returns status, either success or error+reason
+ */
+enum pm_ret_status pm_secure_rsaaes(uint32_t address_low,
+				uint32_t address_high,
+				uint32_t size,
+				uint32_t flags)
+{
+	uint32_t payload[PAYLOAD_ARG_CNT];
+
+	/* Send request to the PMU */
+	PM_PACK_PAYLOAD5(payload, PM_SECURE_RSA_AES, address_high, address_low,
+			 size, flags);
+	return pm_ipi_send_sync(primary_proc, payload, NULL, 0);
+}
+
 /**
  * pm_get_callbackdata() - Read from IPI response buffer
  * @data - array of PAYLOAD_ARG_CNT elements

plat/xilinx/zynqmp/pm_service/pm_api_sys.h

@@ -108,6 +108,10 @@ enum pm_ret_status pm_fpga_load(uint32_t address_low,
 enum pm_ret_status pm_fpga_get_status(unsigned int *value);
 
 enum pm_ret_status pm_get_chipid(uint32_t *value);
+enum pm_ret_status pm_secure_rsaaes(uint32_t address_high,
+				    uint32_t address_low,
+				    uint32_t size,
+				    uint32_t flags);
 void pm_get_callbackdata(uint32_t *data, size_t count);
 enum pm_ret_status pm_pinctrl_request(unsigned int pin);
 enum pm_ret_status pm_pinctrl_release(unsigned int pin);

plat/xilinx/zynqmp/pm_service/pm_svc_main.c

@@ -252,6 +252,11 @@ uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
 			 result[1]);
 	}
 
+	case PM_SECURE_RSA_AES:
+		ret = pm_secure_rsaaes(pm_arg[0], pm_arg[1], pm_arg[2],
+				       pm_arg[3]);
+		SMC_RET1(handle, (uint64_t)ret);
+
 	case PM_GET_CALLBACK_DATA:
 	{
 		uint32_t result[4];