5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
24 #include "os_support.h"
38 #define __ASSEMBLY__ /* Dirty trick to get only #defines */
43 #ifndef O_BINARY /* should be define'd on __WIN32__ */
48 #define MAP_FAILED (-1)
53 extern void sha1_csum (unsigned char *input, int ilen, unsigned char output[20]);
55 int main (int argc, char **argv)
57 unsigned char output[20];
61 char *cmdname = *argv;
65 unsigned char *ptroff;
71 ifd = open (imagefile, O_RDWR|O_BINARY);
73 fprintf (stderr, "%s: Can't open %s: %s\n",
74 cmdname, imagefile, strerror(errno));
77 if (fstat (ifd, &sbuf) < 0) {
78 fprintf (stderr, "%s: Can't stat %s: %s\n",
79 cmdname, imagefile, strerror(errno));
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));
91 /* create a copy, so we can blank out the sha1 sum */
93 memcpy (data, ptr, len);
95 ptroff = &data[len + off];
96 for (i = 0; i < SHA1_SUM_LEN; i++) {
100 sha1_csum ((unsigned char *) data, len, (unsigned char *)output);
102 printf ("U-Boot sum:\n");
103 for (i = 0; i < 20 ; i++) {
104 printf ("%02X ", output[i]);
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));
116 (void) munmap((void *)ptr, len);