xilinx: versal: Add get_api_version support
Add support for EEMI API get_api_verion.
Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: Ic1ef90a194ae6164994a7fc5d8ff0b7b192636fe
diff --git a/plat/xilinx/versal/pm_service/pm_api_sys.c b/plat/xilinx/versal/pm_service/pm_api_sys.c
new file mode 100644
index 0000000..618624e
--- /dev/null
+++ b/plat/xilinx/versal/pm_service/pm_api_sys.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2019, Xilinx, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * Versal system level PM-API functions and communication with PMC via
+ * IPI interrupts
+ */
+
+#include <pm_common.h>
+#include <pm_ipi.h>
+#include "pm_api_sys.h"
+#include "pm_client.h"
+
+/*********************************************************************
+ * Target module IDs macros
+ ********************************************************************/
+#define LIBPM_MODULE_ID 0x2
+#define LOADER_MODULE_ID 0x7
+
+/**
+ * Assigning of argument values into array elements.
+ */
+#define PM_PACK_PAYLOAD1(pl, mid, arg0) { \
+ pl[0] = (uint32_t)((uint32_t)((arg0) & 0xFF) | (mid << 8)); \
+}
+
+/* PM API functions */
+
+/**
+ * pm_get_api_version() - Get version number of PMC PM firmware
+ * @version Returns 32-bit version number of PMC Power Management Firmware
+ *
+ * @return Returns status, either success or error+reason
+ */
+enum pm_ret_status pm_get_api_version(unsigned int *version)
+{
+ uint32_t payload[PAYLOAD_ARG_CNT];
+
+ /* Send request to the PMC */
+ PM_PACK_PAYLOAD1(payload, LIBPM_MODULE_ID, PM_GET_API_VERSION);
+ return pm_ipi_send_sync(primary_proc, payload, version, 1);
+}