1566a494fSHeiko Schocher /* 2566a494fSHeiko Schocher * (C) Copyright 2007 3566a494fSHeiko Schocher * Heiko Schocher, DENX Software Engineering, <hs@denx.de> 4566a494fSHeiko Schocher * 51a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 6566a494fSHeiko Schocher */ 7566a494fSHeiko Schocher 82f8d396bSPeter Tyser #include "os_support.h" 9566a494fSHeiko Schocher #include <stdio.h> 10566a494fSHeiko Schocher #include <stdlib.h> 11566a494fSHeiko Schocher #include <unistd.h> 12566a494fSHeiko Schocher #include <fcntl.h> 13566a494fSHeiko Schocher #include <errno.h> 14566a494fSHeiko Schocher #include <string.h> 15566a494fSHeiko Schocher #include <sys/stat.h> 16*2b9912e6SJeroen Hofstee #include <u-boot/sha1.h> 17566a494fSHeiko Schocher 18566a494fSHeiko Schocher int main (int argc, char **argv) 19566a494fSHeiko Schocher { 20566a494fSHeiko Schocher unsigned char output[20]; 21566a494fSHeiko Schocher int i, len; 22566a494fSHeiko Schocher 23566a494fSHeiko Schocher char *imagefile; 24566a494fSHeiko Schocher char *cmdname = *argv; 25566a494fSHeiko Schocher unsigned char *ptr; 26566a494fSHeiko Schocher unsigned char *data; 27566a494fSHeiko Schocher struct stat sbuf; 28566a494fSHeiko Schocher unsigned char *ptroff; 29566a494fSHeiko Schocher int ifd; 30566a494fSHeiko Schocher int off; 31566a494fSHeiko Schocher 32566a494fSHeiko Schocher if (argc > 1) { 33566a494fSHeiko Schocher imagefile = argv[1]; 34566a494fSHeiko Schocher ifd = open (imagefile, O_RDWR|O_BINARY); 35566a494fSHeiko Schocher if (ifd < 0) { 36566a494fSHeiko Schocher fprintf (stderr, "%s: Can't open %s: %s\n", 37566a494fSHeiko Schocher cmdname, imagefile, strerror(errno)); 38566a494fSHeiko Schocher exit (EXIT_FAILURE); 39566a494fSHeiko Schocher } 40566a494fSHeiko Schocher if (fstat (ifd, &sbuf) < 0) { 41566a494fSHeiko Schocher fprintf (stderr, "%s: Can't stat %s: %s\n", 42566a494fSHeiko Schocher cmdname, imagefile, strerror(errno)); 43566a494fSHeiko Schocher exit (EXIT_FAILURE); 44566a494fSHeiko Schocher } 45566a494fSHeiko Schocher len = sbuf.st_size; 46566a494fSHeiko Schocher ptr = (unsigned char *)mmap(0, len, 47566a494fSHeiko Schocher PROT_READ, MAP_SHARED, ifd, 0); 48566a494fSHeiko Schocher if (ptr == (unsigned char *)MAP_FAILED) { 49566a494fSHeiko Schocher fprintf (stderr, "%s: Can't read %s: %s\n", 50566a494fSHeiko Schocher cmdname, imagefile, strerror(errno)); 51566a494fSHeiko Schocher exit (EXIT_FAILURE); 52566a494fSHeiko Schocher } 53566a494fSHeiko Schocher 54566a494fSHeiko Schocher /* create a copy, so we can blank out the sha1 sum */ 55566a494fSHeiko Schocher data = malloc (len); 56566a494fSHeiko Schocher memcpy (data, ptr, len); 57566a494fSHeiko Schocher off = SHA1_SUM_POS; 58566a494fSHeiko Schocher ptroff = &data[len + off]; 59566a494fSHeiko Schocher for (i = 0; i < SHA1_SUM_LEN; i++) { 60566a494fSHeiko Schocher ptroff[i] = 0; 61566a494fSHeiko Schocher } 62566a494fSHeiko Schocher 63566a494fSHeiko Schocher sha1_csum ((unsigned char *) data, len, (unsigned char *)output); 64566a494fSHeiko Schocher 65566a494fSHeiko Schocher printf ("U-Boot sum:\n"); 664ef218f6SWolfgang Denk for (i = 0; i < 20 ; i++) { 67566a494fSHeiko Schocher printf ("%02X ", output[i]); 68566a494fSHeiko Schocher } 69566a494fSHeiko Schocher printf ("\n"); 70566a494fSHeiko Schocher /* overwrite the sum in the bin file, with the actual */ 71566a494fSHeiko Schocher lseek (ifd, SHA1_SUM_POS, SEEK_END); 72566a494fSHeiko Schocher if (write (ifd, output, SHA1_SUM_LEN) != SHA1_SUM_LEN) { 73566a494fSHeiko Schocher fprintf (stderr, "%s: Can't write %s: %s\n", 74566a494fSHeiko Schocher cmdname, imagefile, strerror(errno)); 75566a494fSHeiko Schocher exit (EXIT_FAILURE); 76566a494fSHeiko Schocher } 77566a494fSHeiko Schocher 78566a494fSHeiko Schocher free (data); 79566a494fSHeiko Schocher (void) munmap((void *)ptr, len); 80566a494fSHeiko Schocher (void) close (ifd); 81566a494fSHeiko Schocher } 82566a494fSHeiko Schocher 83566a494fSHeiko Schocher return EXIT_SUCCESS; 84566a494fSHeiko Schocher } 85