1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2007
3*4882a593Smuzhiyun * Heiko Schocher, DENX Software Engineering, <hs@denx.de>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include "os_support.h"
9*4882a593Smuzhiyun #include <stdio.h>
10*4882a593Smuzhiyun #include <stdlib.h>
11*4882a593Smuzhiyun #include <unistd.h>
12*4882a593Smuzhiyun #include <fcntl.h>
13*4882a593Smuzhiyun #include <errno.h>
14*4882a593Smuzhiyun #include <string.h>
15*4882a593Smuzhiyun #include <sys/stat.h>
16*4882a593Smuzhiyun #include <u-boot/sha1.h>
17*4882a593Smuzhiyun
main(int argc,char ** argv)18*4882a593Smuzhiyun int main (int argc, char **argv)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun unsigned char output[20];
21*4882a593Smuzhiyun int i, len;
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun char *imagefile;
24*4882a593Smuzhiyun char *cmdname = *argv;
25*4882a593Smuzhiyun unsigned char *ptr;
26*4882a593Smuzhiyun unsigned char *data;
27*4882a593Smuzhiyun struct stat sbuf;
28*4882a593Smuzhiyun unsigned char *ptroff;
29*4882a593Smuzhiyun int ifd;
30*4882a593Smuzhiyun int off;
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun if (argc > 1) {
33*4882a593Smuzhiyun imagefile = argv[1];
34*4882a593Smuzhiyun ifd = open (imagefile, O_RDWR|O_BINARY);
35*4882a593Smuzhiyun if (ifd < 0) {
36*4882a593Smuzhiyun fprintf (stderr, "%s: Can't open %s: %s\n",
37*4882a593Smuzhiyun cmdname, imagefile, strerror(errno));
38*4882a593Smuzhiyun exit (EXIT_FAILURE);
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun if (fstat (ifd, &sbuf) < 0) {
41*4882a593Smuzhiyun fprintf (stderr, "%s: Can't stat %s: %s\n",
42*4882a593Smuzhiyun cmdname, imagefile, strerror(errno));
43*4882a593Smuzhiyun exit (EXIT_FAILURE);
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun len = sbuf.st_size;
46*4882a593Smuzhiyun ptr = (unsigned char *)mmap(0, len,
47*4882a593Smuzhiyun PROT_READ, MAP_SHARED, ifd, 0);
48*4882a593Smuzhiyun if (ptr == (unsigned char *)MAP_FAILED) {
49*4882a593Smuzhiyun fprintf (stderr, "%s: Can't read %s: %s\n",
50*4882a593Smuzhiyun cmdname, imagefile, strerror(errno));
51*4882a593Smuzhiyun exit (EXIT_FAILURE);
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun /* create a copy, so we can blank out the sha1 sum */
55*4882a593Smuzhiyun data = malloc (len);
56*4882a593Smuzhiyun memcpy (data, ptr, len);
57*4882a593Smuzhiyun off = SHA1_SUM_POS;
58*4882a593Smuzhiyun ptroff = &data[len + off];
59*4882a593Smuzhiyun for (i = 0; i < SHA1_SUM_LEN; i++) {
60*4882a593Smuzhiyun ptroff[i] = 0;
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun sha1_csum ((unsigned char *) data, len, (unsigned char *)output);
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun printf ("U-Boot sum:\n");
66*4882a593Smuzhiyun for (i = 0; i < 20 ; i++) {
67*4882a593Smuzhiyun printf ("%02X ", output[i]);
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun printf ("\n");
70*4882a593Smuzhiyun /* overwrite the sum in the bin file, with the actual */
71*4882a593Smuzhiyun lseek (ifd, SHA1_SUM_POS, SEEK_END);
72*4882a593Smuzhiyun if (write (ifd, output, SHA1_SUM_LEN) != SHA1_SUM_LEN) {
73*4882a593Smuzhiyun fprintf (stderr, "%s: Can't write %s: %s\n",
74*4882a593Smuzhiyun cmdname, imagefile, strerror(errno));
75*4882a593Smuzhiyun exit (EXIT_FAILURE);
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun free (data);
79*4882a593Smuzhiyun (void) munmap((void *)ptr, len);
80*4882a593Smuzhiyun (void) close (ifd);
81*4882a593Smuzhiyun }
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun return EXIT_SUCCESS;
84*4882a593Smuzhiyun }
85