mkimage: Add OMAP boot image support

- Add mkimage support for OMAP boot image
- Add support for OMAP boot image(MLO) generation in the new
  SPL framework

Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

1 files changed, 224 insertions, 0 deletions

diff --git a/tools/omapimage.c b/tools/omapimage.c
new file mode 100644
index 0000000..29d91cc
--- /dev/null
+++ b/tools/omapimage.c
@@ -0,0 +1,224 @@
+/*
+ * (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>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* Required to obtain the getline prototype from stdio.h */
+#define _GNU_SOURCE
+
+#include "mkimage.h"
+#include <image.h>
+#include "omapimage.h"
+
+/* Header size is CH header rounded up to 512 bytes plus GP header */
+#define OMAP_CH_HDR_SIZE 512
+#define OMAP_GP_HDR_SIZE (sizeof(struct gp_header))
+#define OMAP_FILE_HDR_SIZE (OMAP_CH_HDR_SIZE+OMAP_GP_HDR_SIZE)
+
+static uint8_t omapimage_header[OMAP_FILE_HDR_SIZE];
+
+static int omapimage_check_image_types(uint8_t type)
+{
+	if (type == IH_TYPE_OMAPIMAGE)
+		return EXIT_SUCCESS;
+	else {
+		fprintf(stderr, "Unknown OMAP image type - %x", type);
+		return EXIT_FAILURE;
+	}
+}
+
+/*
+ * Only the simplest image type is currently supported:
+ * TOC pointing to CHSETTINGS
+ * TOC terminator
+ * CHSETTINGS
+ *
+ * padding to OMAP_CH_HDR_SIZE bytes
+ *
+ * gp header
+ *   size
+ *   load_addr
+ */
+static int valid_gph_size(uint32_t size)
+{
+	return size;
+}
+
+static int valid_gph_load_addr(uint32_t load_addr)
+{
+	return load_addr;
+}
+
+static int omapimage_verify_header(unsigned char *ptr, int image_size,
+			struct mkimage_params *params)
+{
+	struct ch_toc *toc = (struct ch_toc *)ptr;
+	struct gp_header *gph = (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
+	uint32_t offset, size;
+
+	while (toc->section_offset != 0xffffffff
+			&& toc->section_size != 0xffffffff) {
+		offset = toc->section_offset;
+		size = toc->section_size;
+		if (!offset || !size)
+			return -1;
+		if (offset >= OMAP_CH_HDR_SIZE ||
+		    offset+size >= OMAP_CH_HDR_SIZE)
+			return -1;
+		toc++;
+	}
+	if (!valid_gph_size(gph->size))
+		return -1;
+	if (!valid_gph_load_addr(gph->load_addr))
+		return -1;
+
+	return 0;
+}
+
+static void omapimage_print_section(struct ch_settings *chs)
+{
+	const char *section_name;
+
+	if (chs->section_key)
+		section_name = "CHSETTINGS";
+	else
+		section_name = "UNKNOWNKEY";
+
+	printf("%s (%x) "
+		"valid:%x "
+		"version:%x "
+		"reserved:%x "
+		"flags:%x\n",
+		section_name,
+		chs->section_key,
+		chs->valid,
+		chs->version,
+		chs->reserved,
+		chs->flags);
+}
+
+static void omapimage_print_header(const void *ptr)
+{
+	const struct ch_toc *toc = (struct ch_toc *)ptr;
+	const struct gp_header *gph =
+			(struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
+	uint32_t offset, size;
+
+	while (toc->section_offset != 0xffffffff
+			&& toc->section_size != 0xffffffff) {
+		offset = toc->section_offset;
+		size = toc->section_size;
+
+		if (offset >= OMAP_CH_HDR_SIZE ||
+		    offset+size >= OMAP_CH_HDR_SIZE)
+			exit(EXIT_FAILURE);
+
+		printf("Section %s offset %x length %x\n",
+			toc->section_name,
+			toc->section_offset,
+			toc->section_size);
+
+		omapimage_print_section((struct ch_settings *)(ptr+offset));
+		toc++;
+	}
+
+	if (!valid_gph_size(gph->size)) {
+		fprintf(stderr,
+			"Error: invalid image size %x\n",
+			gph->size);
+		exit(EXIT_FAILURE);
+	}
+
+	if (!valid_gph_load_addr(gph->load_addr)) {
+		fprintf(stderr,
+			"Error: invalid image load address %x\n",
+			gph->size);
+		exit(EXIT_FAILURE);
+	}
+
+	printf("GP Header: Size %x LoadAddr %x\n",
+		gph->size, gph->load_addr);
+}
+
+static int toc_offset(void *hdr, void *member)
+{
+	return member - hdr;
+}
+
+static void omapimage_set_header(void *ptr, struct stat *sbuf, int ifd,
+				struct mkimage_params *params)
+{
+	struct ch_toc *toc = (struct ch_toc *)ptr;
+	struct ch_settings *chs = (struct ch_settings *)
+					(ptr + 2 * sizeof(*toc));
+	struct gp_header *gph = (struct gp_header *)(ptr + OMAP_CH_HDR_SIZE);
+
+	toc->section_offset = toc_offset(ptr, chs);
+	toc->section_size = sizeof(struct ch_settings);
+	strcpy((char *)toc->section_name, "CHSETTINGS");
+
+	chs->section_key = KEY_CHSETTINGS;
+	chs->valid = 0;
+	chs->version = 1;
+	chs->reserved = 0;
+	chs->flags = 0;
+
+	toc++;
+	memset(toc, 0xff, sizeof(*toc));
+
+	gph->size = sbuf->st_size - OMAP_FILE_HDR_SIZE;
+	gph->load_addr = params->addr;
+}
+
+int omapimage_check_params(struct mkimage_params *params)
+{
+	return	(params->dflag && (params->fflag || params->lflag)) ||
+		(params->fflag && (params->dflag || params->lflag)) ||
+		(params->lflag && (params->dflag || params->fflag));
+}
+
+/*
+ * omapimage parameters
+ */
+static struct image_type_params omapimage_params = {
+	.name		= "TI OMAP CH/GP Boot Image support",
+	.header_size	= OMAP_FILE_HDR_SIZE,
+	.hdr		= (void *)&omapimage_header,
+	.check_image_type = omapimage_check_image_types,
+	.verify_header	= omapimage_verify_header,
+	.print_header	= omapimage_print_header,
+	.set_header	= omapimage_set_header,
+	.check_params	= omapimage_check_params,
+};
+
+void init_omap_image_type(void)
+{
+	mkimage_register(&omapimage_params);
+}