1 /* 2 * (C) Copyright 2007 3 * Heiko Schocher, DENX Software Engineering, <hs@denx.de> 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #include "os_support.h" 25 #include <stdio.h> 26 #include <stdlib.h> 27 #include <unistd.h> 28 #include <fcntl.h> 29 #include <errno.h> 30 #include <string.h> 31 #ifndef __MINGW32__ 32 #include <sys/mman.h> 33 #endif 34 #include <sys/stat.h> 35 #include "sha1.h" 36 37 #ifndef __ASSEMBLY__ 38 #define __ASSEMBLY__ /* Dirty trick to get only #defines */ 39 #endif 40 #include <config.h> 41 #undef __ASSEMBLY__ 42 43 #ifndef O_BINARY /* should be define'd on __WIN32__ */ 44 #define O_BINARY 0 45 #endif 46 47 #ifndef MAP_FAILED 48 #define MAP_FAILED (-1) 49 #endif 50 51 extern int errno; 52 53 extern void sha1_csum (unsigned char *input, int ilen, unsigned char output[20]); 54 55 int main (int argc, char **argv) 56 { 57 unsigned char output[20]; 58 int i, len; 59 60 char *imagefile; 61 char *cmdname = *argv; 62 unsigned char *ptr; 63 unsigned char *data; 64 struct stat sbuf; 65 unsigned char *ptroff; 66 int ifd; 67 int off; 68 69 if (argc > 1) { 70 imagefile = argv[1]; 71 ifd = open (imagefile, O_RDWR|O_BINARY); 72 if (ifd < 0) { 73 fprintf (stderr, "%s: Can't open %s: %s\n", 74 cmdname, imagefile, strerror(errno)); 75 exit (EXIT_FAILURE); 76 } 77 if (fstat (ifd, &sbuf) < 0) { 78 fprintf (stderr, "%s: Can't stat %s: %s\n", 79 cmdname, imagefile, strerror(errno)); 80 exit (EXIT_FAILURE); 81 } 82 len = sbuf.st_size; 83 ptr = (unsigned char *)mmap(0, len, 84 PROT_READ, MAP_SHARED, ifd, 0); 85 if (ptr == (unsigned char *)MAP_FAILED) { 86 fprintf (stderr, "%s: Can't read %s: %s\n", 87 cmdname, imagefile, strerror(errno)); 88 exit (EXIT_FAILURE); 89 } 90 91 /* create a copy, so we can blank out the sha1 sum */ 92 data = malloc (len); 93 memcpy (data, ptr, len); 94 off = SHA1_SUM_POS; 95 ptroff = &data[len + off]; 96 for (i = 0; i < SHA1_SUM_LEN; i++) { 97 ptroff[i] = 0; 98 } 99 100 sha1_csum ((unsigned char *) data, len, (unsigned char *)output); 101 102 printf ("U-Boot sum:\n"); 103 for (i = 0; i < 20 ; i++) { 104 printf ("%02X ", output[i]); 105 } 106 printf ("\n"); 107 /* overwrite the sum in the bin file, with the actual */ 108 lseek (ifd, SHA1_SUM_POS, SEEK_END); 109 if (write (ifd, output, SHA1_SUM_LEN) != SHA1_SUM_LEN) { 110 fprintf (stderr, "%s: Can't write %s: %s\n", 111 cmdname, imagefile, strerror(errno)); 112 exit (EXIT_FAILURE); 113 } 114 115 free (data); 116 (void) munmap((void *)ptr, len); 117 (void) close (ifd); 118 } 119 120 return EXIT_SUCCESS; 121 } 122