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  • /*
     * (C) Copyright 2000-2004
     * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
     *
     * (C) Copyright 2003
     * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
     *
     * 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
     */
    
    
    /*
     * Multi Image extract
     */
    #include <common.h>
    #include <command.h>
    #include <image.h>
    #include <asm/byteorder.h>
    
    int
    do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
    {
    
    	ulong		addr = load_addr;
    	ulong		dest = 0;
    	ulong		data, len, count;
    
    	int		part = 0;
    	char		pbuf[10];
    	image_header_t	*hdr;
    #if defined(CONFIG_FIT)
    
    	const void*	fit_hdr;
    	int		noffset;
    	const void	*fit_data;
    	size_t		fit_len;
    #endif
    
    	verify = getenv_yesno ("verify");
    
    
    	if (argc > 1) {
    		addr = simple_strtoul(argv[1], NULL, 16);
    	}
    	if (argc > 2) {
    		part = simple_strtoul(argv[2], NULL, 16);
    
    #if defined(CONFIG_FIT)
    		uname = argv[2];
    #endif
    
    	}
    	if (argc > 3) {
    		dest = simple_strtoul(argv[3], NULL, 16);
    	}
    
    
    	switch (genimg_get_format ((void *)addr)) {
    
    	case IMAGE_FORMAT_LEGACY:
    
    		printf("## Copying part %d from legacy image "
    			"at %08lx ...\n", part, addr);
    
    
    		hdr = (image_header_t *)addr;
    		if (!image_check_magic (hdr)) {
    			printf("Bad Magic Number\n");
    			return 1;
    		}
    
    		if (!image_check_hcrc (hdr)) {
    			printf("Bad Header Checksum\n");
    			return 1;
    		}
    
    		image_print_contents (hdr);
    
    		if (!image_check_type (hdr, IH_TYPE_MULTI)) {
    			printf("Wrong Image Type for %s command\n",
    					cmdtp->name);
    			return 1;
    		}
    
    		if (image_get_comp (hdr) != IH_COMP_NONE) {
    			printf("Wrong Compression Type for %s command\n",
    					cmdtp->name);
    
    		if (verify) {
    			printf("   Verifying Checksum ... ");
    			if (!image_check_dcrc (hdr)) {
    				printf("Bad Data CRC\n");
    				return 1;
    
    		count = image_multi_count (hdr);
    		if (part >= count) {
    
    			printf("Bad Image Part\n");
    			return 1;
    		}
    
    
    		image_multi_getimg (hdr, part, &data, &len);
    		break;
    
    #if defined(CONFIG_FIT)
    	case IMAGE_FORMAT_FIT:
    
    		if (uname == NULL) {
    			puts ("No FIT subimage unit name\n");
    			return 1;
    		}
    
    		printf("## Copying '%s' subimage from FIT image "
    			"at %08lx ...\n", uname, addr);
    
    		fit_hdr = (const void *)addr;
    		if (!fit_check_format (fit_hdr)) {
    			puts ("Bad FIT image format\n");
    			return 1;
    		}
    
    		/* get subimage node offset */
    
    		noffset = fit_image_get_node (fit_hdr, uname);
    
    		if (noffset < 0) {
    			printf ("Can't find '%s' FIT subimage\n", uname);
    			return 1;
    		}
    
    		if (fit_image_check_comp (fit_hdr, noffset, IH_COMP_NONE)) {
    			printf("Wrong Compression Type for %s command\n",
    					cmdtp->name);
    			return 1;
    		}
    
    		/* verify integrity */
    		if (verify) {
    			if (!fit_image_check_hashes (fit_hdr, noffset)) {
    				puts ("Bad Data Hash\n");
    				return 1;
    			}
    		}
    
    		/* get subimage data address and length */
    		if (fit_image_get_data (fit_hdr, noffset, &fit_data, &fit_len)) {
    			puts ("Could not find script subimage data\n");
    			return 1;
    		}
    
    
    #endif
    	default:
    		puts ("Invalid image type for imxtract\n");
    
    		return 1;
    	}
    
    	if (argc > 3) {
    		memcpy((char *) dest, (char *) data, len);
    	}
    
    	sprintf(pbuf, "%8lx", data);
    	setenv("fileaddr", pbuf);
    	sprintf(pbuf, "%8lx", len);
    	setenv("filesize", pbuf);
    
    	return 0;
    }
    
    U_BOOT_CMD(imxtract, 4, 1, do_imgextract,
    	   "imxtract- extract a part of a multi-image\n",
    	   "addr part [dest]\n"
    
    	   "    - extract <part> from legacy image at <addr> and copy to <dest>\n"
    #if defined(CONFIG_FIT)
    	   "addr uname [dest]\n"
    	   "    - extract <uname> subimage from FIT image at <addr> and copy to <dest>\n"
    #endif
    );