xilskey: Added BBRAM Ps example

To program Bbram PS example is provided this example
doesnot require any input.h file it doesnot contain any control
bits to be programmed.
It has only one feature is to program AES key into BBRAM.
User can edit the macro XSK_ZYNQMP_BBRAMPS_AES_KEY with the key
to be programmed.

Signed-off-by: VNSL Durga <vnsldurg@xilinx.com>
Reviewed-by: Harini Katakam <harinik@xilinx.com>

lib/sw_services/xilskey/examples/xilskey_bbramps_zynqmp_example.c

@@ -0,0 +1,115 @@
+/******************************************************************************
+*
+* Copyright (C) 2015 Xilinx, Inc.  All rights reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* Use of the Software is limited solely to applications:
+* (a) running on a Xilinx device, or
+* (b) that interact with a Xilinx device through a bus or interconnect.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+* XILINX  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+* SOFTWARE.
+*
+* Except as contained in this notice, the name of the Xilinx shall not be used
+* in advertising or otherwise to promote the sale, use or other dealings in
+* this Software without prior written authorization from Xilinx.
+*
+******************************************************************************/
+
+/*****************************************************************************/
+/**
+*
+* @file xilskey_bbramps_zynqmp_example.c
+* This file illustrates how to program AES key of ZynqMP BBRAM.
+* Ideally example should be excited with status 0x00000000 if not
+* there was some error in programming.
+*
+* @note: No need to include any header file in src of the application.
+*
+* <pre>
+* MODIFICATION HISTORY:
+*
+* Ver   Who     Date     Changes
+* ----- ------  -------- ------------------------------------------------------
+* 4.0   vns     10/08/15 First release
+* </pre>
+*
+******************************************************************************/
+
+/***************************** Include Files *********************************/
+
+#include "xil_io.h"
+#include "xstatus.h"
+#include "xilskey_utils.h"
+#include "xilskey_bbram.h"
+
+/***************** Macros (Inline Functions) Definitions *********************/
+
+/*
+ * This is the 256 bit key to be programmed into BBRAM.
+ * This should entered by user in HEX.
+ */
+#define XSK_ZYNQMP_BBRAMPS_AES_KEY "0000000000000000000000000000000000000000000000000000000000000000"
+
+#define XSK_ZYNQMP_BBRAMPS_AES_KEY_LEN_IN_BYTES		(32)
+						/**< AES key length in Bytes */
+#define XSK_ZYNQMP_BBRAMPS_AES_KEY_LEN_IN_BITS		(256)
+						/**< AES key length in Bits */
+#define XSK_ZYNQMP_BBRAMPS_AES_KEY_STR_LEN		(64)
+						/**< String length of Key */
+
+/**************************** Type Definitions *******************************/
+
+
+/************************** Variable Definitions ****************************/
+
+u8 AesKey[XSK_ZYNQMP_BBRAMPS_AES_KEY_LEN_IN_BYTES];
+
+/************************** Function Prototypes ******************************/
+
+/*****************************************************************************/
+
+int main()
+{
+	u32 Status = XST_SUCCESS;
+
+#if defined (XSK_XPLAT_ZYNQ) || (XSK_MICROBLAZE_PLATFORM)
+	xil_printf("This example will not work for this platform\n\r");
+#endif
+
+	xil_printf("BBRAM example for ZynqMP\n\r");
+
+	/* Validate the key */
+	Status = XilSKey_Efuse_ValidateKey(
+					(char *)XSK_ZYNQMP_BBRAMPS_AES_KEY,
+					XSK_ZYNQMP_BBRAMPS_AES_KEY_STR_LEN);
+	if(Status != XST_SUCCESS) {
+		goto END;
+	}
+	/* Convert key given in macro and assign it to the variable */
+	XilSKey_Efuse_ConvertStringToHexLE((char *)XSK_ZYNQMP_BBRAMPS_AES_KEY,
+				&(AesKey[0]),
+				XSK_ZYNQMP_BBRAMPS_AES_KEY_LEN_IN_BITS);
+
+	Status = XilSKey_ZynqMp_Bbram_Program((u32 *)AesKey);
+
+END:
+	xil_printf("BBRAM programming exit with Status = %08x\n\r", Status);
+
+	return Status;
+
+}