default_image.c

/*
 * (C) Copyright 2008 Semihalf
 *
 * (C) Copyright 2000-2004
 * DENX Software Engineering
 * Wolfgang Denk, wd@denx.de
 *
 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
 *		default_image specific code abstracted from mkimage.c
 *		some functions added to address abstraction
 *
 * All rights reserved.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include "imagetool.h"
#include "mkimage.h"

#include <image.h>
#include <u-boot/crc.h>

static image_header_t header;

static int image_check_image_types(uint8_t type)
{
	if (((type > IH_TYPE_INVALID) && (type < IH_TYPE_FLATDT)) ||
	    (type == IH_TYPE_KERNEL_NOLOAD))
		return EXIT_SUCCESS;
	else
		return EXIT_FAILURE;
}

static int image_check_params(struct image_tool_params *params)
{
	return	((params->dflag && (params->fflag || params->lflag)) ||
		(params->fflag && (params->dflag || params->lflag)) ||
		(params->lflag && (params->dflag || params->fflag)));
}

static int image_verify_header(unsigned char *ptr, int image_size,
			struct image_tool_params *params)
{
	uint32_t len;
	const unsigned char *data;
	uint32_t checksum;
	image_header_t header;
	image_header_t *hdr = &header;

	/*
	 * create copy of header so that we can blank out the
	 * checksum field for checking - this can't be done
	 * on the PROT_READ mapped data.
	 */
	memcpy(hdr, ptr, sizeof(image_header_t));

	if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) {
		debug("%s: Bad Magic Number: \"%s\" is no valid image\n",
		      params->cmdname, params->imagefile);
		return -FDT_ERR_BADMAGIC;
	}

	data = (const unsigned char *)hdr;
	len  = sizeof(image_header_t);

	checksum = be32_to_cpu(hdr->ih_hcrc);
	hdr->ih_hcrc = cpu_to_be32(0);	/* clear for re-calculation */

	if (crc32(0, data, len) != checksum) {
		debug("%s: ERROR: \"%s\" has bad header checksum!\n",