mirror of
https://github.com/brain-hackers/u-boot-brain
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150 lines
4.1 KiB
C
150 lines
4.1 KiB
C
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/*
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* (C) Copyright 2008 Semihalf
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*
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* (C) Copyright 2000-2004
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* DENX Software Engineering
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* Wolfgang Denk, wd@denx.de
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*
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* Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
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* default_image specific code abstracted from mkimage.c
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* some functions added to address abstraction
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include "mkimage.h"
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#include <image.h>
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#include <u-boot/crc.h>
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static image_header_t header;
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static int image_check_image_types (uint8_t type)
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{
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if ((type > IH_TYPE_INVALID) && (type < IH_TYPE_FLATDT))
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return EXIT_SUCCESS;
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else
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return EXIT_FAILURE;
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}
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static int image_check_params (struct mkimage_params *params)
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{
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return ((params->dflag && (params->fflag || params->lflag)) ||
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(params->fflag && (params->dflag || params->lflag)) ||
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(params->lflag && (params->dflag || params->fflag)));
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}
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static int image_verify_header (unsigned char *ptr, int image_size,
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struct mkimage_params *params)
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{
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uint32_t len;
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const unsigned char *data;
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uint32_t checksum;
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image_header_t header;
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image_header_t *hdr = &header;
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/*
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* create copy of header so that we can blank out the
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* checksum field for checking - this can't be done
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* on the PROT_READ mapped data.
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*/
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memcpy (hdr, ptr, sizeof(image_header_t));
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if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) {
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fprintf (stderr,
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"%s: Bad Magic Number: \"%s\" is no valid image\n",
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params->cmdname, params->imagefile);
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return -FDT_ERR_BADMAGIC;
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}
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data = (const unsigned char *)hdr;
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len = sizeof(image_header_t);
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checksum = be32_to_cpu(hdr->ih_hcrc);
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hdr->ih_hcrc = cpu_to_be32(0); /* clear for re-calculation */
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if (crc32 (0, data, len) != checksum) {
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fprintf (stderr,
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"%s: ERROR: \"%s\" has bad header checksum!\n",
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params->cmdname, params->imagefile);
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return -FDT_ERR_BADSTATE;
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}
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data = (const unsigned char *)ptr + sizeof(image_header_t);
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len = image_size - sizeof(image_header_t) ;
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checksum = be32_to_cpu(hdr->ih_dcrc);
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if (crc32 (0, data, len) != checksum) {
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fprintf (stderr,
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"%s: ERROR: \"%s\" has corrupted data!\n",
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params->cmdname, params->imagefile);
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return -FDT_ERR_BADSTRUCTURE;
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}
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return 0;
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}
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static void image_set_header (void *ptr, struct stat *sbuf, int ifd,
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struct mkimage_params *params)
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{
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uint32_t checksum;
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image_header_t * hdr = (image_header_t *)ptr;
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checksum = crc32 (0,
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(const unsigned char *)(ptr +
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sizeof(image_header_t)),
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sbuf->st_size - sizeof(image_header_t));
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/* Build new header */
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image_set_magic (hdr, IH_MAGIC);
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image_set_time (hdr, sbuf->st_mtime);
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image_set_size (hdr, sbuf->st_size - sizeof(image_header_t));
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image_set_load (hdr, params->addr);
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image_set_ep (hdr, params->ep);
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image_set_dcrc (hdr, checksum);
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image_set_os (hdr, params->os);
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image_set_arch (hdr, params->arch);
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image_set_type (hdr, params->type);
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image_set_comp (hdr, params->comp);
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image_set_name (hdr, params->imagename);
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checksum = crc32 (0, (const unsigned char *)hdr,
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sizeof(image_header_t));
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image_set_hcrc (hdr, checksum);
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}
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/*
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* Default image type parameters definition
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*/
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static struct image_type_params defimage_params = {
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.name = "Default Image support",
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.header_size = sizeof(image_header_t),
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.hdr = (void*)&header,
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.check_image_type = image_check_image_types,
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.verify_header = image_verify_header,
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.print_header = image_print_contents,
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.set_header = image_set_header,
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.check_params = image_check_params,
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};
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void init_default_image_type (void)
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{
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mkimage_register (&defimage_params);
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}
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