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Diffstat (limited to 'tools/default_image.c')
| -rw-r--r-- | tools/default_image.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/tools/default_image.c b/tools/default_image.c new file mode 100644 index 000000000..f5bad4757 --- /dev/null +++ b/tools/default_image.c @@ -0,0 +1,149 @@ +/* + * (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. + * + * 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 + */ + +#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)) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +static int image_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))); +} + +static int image_verify_header (unsigned char *ptr, int image_size, + struct mkimage_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) { + fprintf (stderr, + "%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) { + fprintf (stderr, + "%s: ERROR: \"%s\" has bad header checksum!\n", + params->cmdname, params->imagefile); + return -FDT_ERR_BADSTATE; + } + + data = (const unsigned char *)ptr + sizeof(image_header_t); + len = image_size - sizeof(image_header_t) ; + + checksum = be32_to_cpu(hdr->ih_dcrc); + if (crc32 (0, data, len) != checksum) { + fprintf (stderr, + "%s: ERROR: \"%s\" has corrupted data!\n", + params->cmdname, params->imagefile); + return -FDT_ERR_BADSTRUCTURE; + } + return 0; +} + +static void image_set_header (void *ptr, struct stat *sbuf, int ifd, + struct mkimage_params *params) +{ + uint32_t checksum; + + image_header_t * hdr = (image_header_t *)ptr; + + checksum = crc32 (0, + (const unsigned char *)(ptr + + sizeof(image_header_t)), + sbuf->st_size - sizeof(image_header_t)); + + /* Build new header */ + image_set_magic (hdr, IH_MAGIC); + image_set_time (hdr, sbuf->st_mtime); + image_set_size (hdr, sbuf->st_size - sizeof(image_header_t)); + image_set_load (hdr, params->addr); + image_set_ep (hdr, params->ep); + image_set_dcrc (hdr, checksum); + image_set_os (hdr, params->os); + image_set_arch (hdr, params->arch); + image_set_type (hdr, params->type); + image_set_comp (hdr, params->comp); + + image_set_name (hdr, params->imagename); + + checksum = crc32 (0, (const unsigned char *)hdr, + sizeof(image_header_t)); + + image_set_hcrc (hdr, checksum); +} + +/* + * Default image type parameters definition + */ +static struct image_type_params defimage_params = { + .name = "Default Image support", + .header_size = sizeof(image_header_t), + .hdr = (void*)&header, + .check_image_type = image_check_image_types, + .verify_header = image_verify_header, + .print_header = image_print_contents, + .set_header = image_set_header, + .check_params = image_check_params, +}; + +void init_default_image_type (void) +{ + mkimage_register (&defimage_params); +} |