tools: mkimage: add support for gpimage format

This patch add support for gpimage format as a preparatory
patch for porting u-boot for keystone2 devices and is
based on omapimage format. It re-uses gph header to store the
size and loadaddr as done in omapimage.c

Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Acked-by: Tom Rini <trini@ti.com>

tools/gpimage.c

@@ -0,0 +1,77 @@
+/*
+ * (C) Copyright 2014
+ * Texas Instruments Incorporated
+ * Add gpimage format for keystone devices to format spl image. This is
+ * Based on omapimage.c
+ *
+ * (C) Copyright 2010
+ * Linaro LTD, www.linaro.org
+ * Author: John Rigby <john.rigby@linaro.org>
+ * Based on TI's signGP.c
+ *
+ * (C) Copyright 2009
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
+ *
+ * (C) Copyright 2008
+ * Marvell Semiconductor <www.marvell.com>
+ * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include "imagetool.h"
+#include <compiler.h>
+#include <image.h>
+#include "gpheader.h"
+
+static uint8_t gpimage_header[GPIMAGE_HDR_SIZE];
+
+/* to be in keystone gpimage */
+static int gpimage_check_image_types(uint8_t type)
+{
+	if (type == IH_TYPE_GPIMAGE)
+		return EXIT_SUCCESS;
+	return EXIT_FAILURE;
+}
+
+static int gpimage_verify_header(unsigned char *ptr, int image_size,
+			struct image_tool_params *params)
+{
+	struct gp_header *gph = (struct gp_header *)ptr;
+
+	return gph_verify_header(gph, 1);
+}
+
+static void gpimage_print_header(const void *ptr)
+{
+	const struct gp_header *gph = (struct gp_header *)ptr;
+
+	gph_print_header(gph, 1);
+}
+
+static void gpimage_set_header(void *ptr, struct stat *sbuf, int ifd,
+				struct image_tool_params *params)
+{
+	struct gp_header *gph = (struct gp_header *)ptr;
+
+	gph_set_header(gph, sbuf->st_size - GPIMAGE_HDR_SIZE, params->addr, 1);
+}
+
+/*
+ * gpimage parameters
+ */
+static struct image_type_params gpimage_params = {
+	.name		= "TI KeyStone GP Image support",
+	.header_size	= GPIMAGE_HDR_SIZE,
+	.hdr		= (void *)&gpimage_header,
+	.check_image_type = gpimage_check_image_types,
+	.verify_header	= gpimage_verify_header,
+	.print_header	= gpimage_print_header,
+	.set_header	= gpimage_set_header,
+	.check_params	= gpimage_check_params,
+};
+
+void init_gpimage_type(void)
+{
+	register_image_type(&gpimage_params);
+}