rbutil/mkamsboot/main.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * mkamsboot - a tool for merging bootloader code into an Sansa V2
  11  *             (AMS) firmware file
  12  *
  13  * Copyright (C) 2008 Dave Chapman
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21  * KIND, either express or implied.
  22  *
  23  ****************************************************************************/
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <stdint.h>
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <fcntl.h>
  31 #include <unistd.h>
  32 #include <string.h>
  33
  34 #include <ucl/ucl.h>
  35
  36 #include "mkamsboot.h"
  37
  38 /* Header for ARM code binaries */
  39 #include "dualboot.h"
  40
  41 /* Win32 compatibility */
  42 #ifndef O_BINARY
  43 #define O_BINARY 0
  44 #endif
  45
  46 /* standalone executable */
  47 int main(int argc, char* argv[])
  48 {
  49     char *infile, *bootfile, *outfile;
  50     int fdout;
  51     off_t len;
  52     uint32_t n;
  53     unsigned char* buf;
  54     int firmware_size;
  55     int bootloader_size;
  56     unsigned char* of_packed;
  57     int of_packedsize;
  58     unsigned char* rb_packed;
  59     int rb_packedsize;
  60     int totalsize;
  61     char errstr[200];
  62     struct md5sums sum;
  63     char md5sum[33]; /* 32 digits + \0 */
  64
  65     sum.md5 = md5sum;
  66
  67 /* VERSION comes frome the Makefile */
  68     fprintf(stderr,
  69 "mkamsboot Version " VERSION "\n"
  70 "This is free software; see the source for copying conditions.  There is NO\n"
  71 "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"
  72 "\n");
  73
  74     if(argc != 4) {
  75         printf("Usage: mkamsboot <firmware file> <boot file> <output file>\n");
  76         return 1;
  77     }
  78
  79     infile = argv[1];
  80     bootfile = argv[2];
  81     outfile = argv[3];
  82
  83     /* Load original firmware file */
  84     buf = load_of_file(infile, &len, &sum,
  85             &firmware_size, &of_packed, &of_packedsize, errstr, sizeof(errstr));
  86
  87     if (buf == NULL) {
  88         fprintf(stderr, "%s", errstr);
  89         fprintf(stderr, "[ERR]  Could not load %s\n", infile);
  90         return 1;
  91     }
  92
  93     fprintf(stderr, "[INFO] Original firmware MD5 checksum match\n");
  94     fprintf(stderr, "[INFO] Model: Sansa %s v%d - Firmware version: %s\n",
  95             model_names[sum.model], hw_revisions[sum.model], sum.version);
  96
  97
  98     /* Load bootloader file */
  99     rb_packed = load_rockbox_file(bootfile, sum.model, &bootloader_size,
 100             &rb_packedsize, errstr, sizeof(errstr));
 101     if (rb_packed == NULL) {
 102         fprintf(stderr, "%s", errstr);
 103         fprintf(stderr, "[ERR]  Could not load %s\n", bootfile);
 104         free(buf);
 105         free(of_packed);
 106         return 1;
 107     }
 108
 109     printf("[INFO] Firmware patching has begun !\n\n");
 110
 111     fprintf(stderr, "[INFO] Original firmware size:   %d bytes\n",
 112             firmware_size);
 113     fprintf(stderr, "[INFO] Packed OF size:           %d bytes\n",
 114             of_packedsize);
 115     fprintf(stderr, "[INFO] Bootloader size:          %d bytes\n",
 116             (int)bootloader_size);
 117     fprintf(stderr, "[INFO] Packed bootloader size:   %d bytes\n",
 118             rb_packedsize);
 119     fprintf(stderr, "[INFO] Dual-boot function size:  %d bytes\n",
 120             bootloader_sizes[sum.model]);
 121     fprintf(stderr, "[INFO] UCL unpack function size: %u bytes\n",
 122             (unsigned int)sizeof(nrv2e_d8));
 123
 124     totalsize = total_size(sum.model, of_packedsize, rb_packedsize);
 125
 126     fprintf(stderr, "[INFO] Total size of new image:  %d bytes\n", totalsize);
 127
 128     if (totalsize > firmware_size) {
 129         fprintf(stderr, "[ERR]  No room to insert bootloader, aborting\n");
 130         free(buf);
 131         free(of_packed);
 132         free(rb_packed);
 133         return 1;
 134     }
 135
 136     patch_firmware(sum.model, fw_revisions[sum.model], firmware_size, buf, len,
 137             of_packed, of_packedsize, rb_packed, rb_packedsize);
 138
 139     /* Write the new firmware */
 140     fdout = open(outfile, O_CREAT|O_TRUNC|O_WRONLY|O_BINARY, 0666);
 141
 142     if (fdout < 0) {
 143         fprintf(stderr, "[ERR]  Could not open %s for writing\n", outfile);
 144         free(buf);
 145         free(of_packed);
 146         free(rb_packed);
 147         return 1;
 148     }
 149
 150     n = write(fdout, buf, len);
 151
 152     if (n != (unsigned)len) {
 153         fprintf(stderr, "[ERR]  Could not write firmware file\n");
 154         free(buf);
 155         free(of_packed);
 156         free(rb_packed);
 157         return 1;
 158     }
 159
 160     close(fdout);
 161     free(buf);
 162     free(of_packed);
 163     free(rb_packed);
 164     fprintf(stderr, "\n[INFO] Patching succeeded!\n");
 165
 166     return 0;
 167 }
 168