/* * Copyright (C) 2007  Jiong Zhao <jiong.zhao@mail.tongji.edu.cn> * * 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 *//* December 12 2007 * * This program is used to create a binary file for Xscale IXP425  * development board produced by FUDANTECH co. The binary file is  * a packed one composed by multi images to be written into FLASH. * * To be ease of use, we refer to available similar programs to make  * the usage as same as possible. Mostly we refernced the program * programmed by Manuel Novoa III  <mjn3@codepoet.org>. But this  * program is totaly different from that one. * */#include <stdio.h>#include <stdlib.h>#include <stddef.h>#include <stdint.h>#include <string.h>#include <errno.h>#include <unistd.h>#include <byteswap.h>/* Define the machine's endian type. If we operate on Big Endian data, * then we use READ32_BE(X) and STORE32_BE(X). If we operate on Little * Endian data, then we should use READ32_LE(X) and STORE32_BE(X). */#define __BYTE_ORDER __LITTLE_ENDIAN       // Host machine - i386 type.//#define __BYTE_ORDER __BIG_ENDIAN          // Target machine - ARM type.#if __BYTE_ORDER == __BIG_ENDIAN           // Program used on ARM type.#define STORE32_LE(X)           bswap_32(X)#define READ32_LE(X)            bswap_32(X)#define STORE32_BE(X)           (X)#define READ32_BE(X)            (X)#elif __BYTE_ORDER == __LITTLE_ENDIAN      // Program used on i386 type.#define STORE32_LE(X)           (X)#define READ32_LE(X)            (X)#define STORE32_BE(X)           bswap_32(X)#define READ32_BE(X)            bswap_32(X)#else#error unkown endianness!#endifuint32_t crc32buf(char *buf, size_t len);/**********************************************************************/#define PAK_MAGIC	0x41435358	/* "XSCA" */#define PAK_VERSION	1#define PAK_MAX_LEN	0xB00000#define MAX_NAME_LEN	15#define MAX_PAK_IMAGES  5struct img_header {	uint32_t offset;	/* image begin offset in this pack file. -1 end.*/	uint32_t len;		/* length of pure file. */	uint32_t mtdofs;         /* null if this is the last. */		uint32_t mtdno;		/* in /proc/mtd: dev */	char mtdname[MAX_NAME_LEN+1];          /* in /proc/mtd: name  */	char filename[MAX_NAME_LEN+1];         /* filename when packed (w/o path) */} img_header_t ;		struct pak_header {	uint32_t magic;		/* "XSCA" */	uint32_t len;		/* Length of file including header */	uint32_t crc32;		/* 32-bit CRC from flag_version to end of file */	uint32_t icount;	/* Total image file number. */	struct img_header img[MAX_PAK_IMAGES];	};/**********************************************************************//* The header occupis 256 bytes. The first image file is stored beginning *//* from this location. Only 5 image files can be stored together. */void usage(void) __attribute__ (( __noreturn__ ));void usage(void){	fprintf(stderr, "Usage: packimage [-o outfile] [-m maxlen] [-b offset] [-d mtdno] [-n mtdname] [-f file] [-f file [-f file]]\n");	exit(EXIT_FAILURE);}int main(int argc, char **argv){	FILE *fout = stdout;	FILE *fin;	char *ofn = NULL;	char *buf, *name;	char *e;	int c, i, append = 0;	size_t n;	uint32_t cur_len;	unsigned long maxlen = PAK_MAX_LEN;	struct pak_header *pak;  	fprintf(stderr, "\nPackimage files for IXP425. - v0.2.1\n");	if (!(buf = malloc(maxlen))) {		fprintf(stderr, "Not enough memory to run, malloc failed\n");		return EXIT_FAILURE;	}	pak = (struct pak_header *) buf;	for (n=0; n<MAX_PAK_IMAGES; n++) {		pak->img[n].mtdno = -1 ;		pak->img[n].len = 0;	}	/* The magic number is a special case and always in little endian. */	pak->magic = STORE32_LE(PAK_MAGIC);	cur_len = sizeof(struct pak_header);  // 0x100 first.	fin = NULL;	i = 0; n = 0 ;       // Image No.	while ((c = getopt(argc, argv, "-:o:m:b:n:d:f:A:")) != -1) {		switch (c) {			case 'A':				append = 1;				/* fall through */			case 'f':			case  1 :				if (!append) 					pak->img[i].offset = STORE32_BE(cur_len);				if (!(fin = fopen(optarg, "r"))) {					fprintf(stderr, "can not open \"%s\" for reading\n", optarg);					usage();				}				n = fread(buf + cur_len, 1, maxlen - cur_len, fin);				if (!feof(fin)) {					fprintf(stderr, "fread failure or file \"%s\" too large\n",optarg);					fclose(fin);					return EXIT_FAILURE;				}				fclose(fin);				errno = 0;				name = strrchr(optarg,'/');				name = name ? name + 1: optarg ; 				fprintf(stderr, "Processing file: %s\n", name);				if (name) {					strncpy(pak->img[i].filename,name,MAX_NAME_LEN);					if (strlen(name) > MAX_NAME_LEN ) 						fprintf(stderr, "WARNING: Filename %s truncated\n",name);				} else {					sprintf(pak->img[i].filename, "Imagefile%d", i);				}				pak->img[i].len = STORE32_BE(n);				i++; #undef  ROUND#define ROUND 4				if (n & (ROUND-1)) {					memset(buf + cur_len + n, 0, ROUND - (n & (ROUND-1)));					n += ROUND - (n & (ROUND-1));				}				cur_len += n;				append = 0;				break;			case 'o':				ofn = optarg;				if (ofn && !(fout = fopen(ofn, "w"))) {					fprintf(stderr, "can not open \"%s\" for writing\n", ofn);					usage();				}				break;			case 'm':  // Max len.				errno = 0;				maxlen = strtoul(optarg, &e, 0);				if (errno || (e == optarg) || *e) {					fprintf(stderr, "illegal numeric string\n");					usage();				}#undef  ROUND#define ROUND 0x1000				if (maxlen & (ROUND-1)) {					maxlen += (ROUND - (maxlen & (ROUND-1)));				}				if (maxlen < ROUND) {					fprintf(stderr, "maxlen too small (or wrapped)\n");					usage();				}				if (maxlen > PAK_MAX_LEN) {					fprintf(stderr, "WARNING: maxlen exceeds default maximum!  Beware of overwriting nvram!\n");				}				if (!(buf = realloc(buf,maxlen))) {					fprintf(stderr, "realloc failed");					return EXIT_FAILURE;				}				break;