scripts/redboot-script.pl

   1 #!/usr/bin/env perl
   2 #
   3 # Script for generating redboot configs, based on brcmImage.pl
   4 #
   5 # Copyright (C) 2015 Álvaro Fernández Rojas <noltari@gmail.com>
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 #
  21
  22 use strict;
  23 use Getopt::Std;
  24 use File::stat;
  25
  26 my $version = "0.1";
  27 my %arg = (
  28         o => 'redboot.script',
  29         s => 0x1000,
  30         f => 0xbe430000,
  31         a => 0x80010000,
  32         l => 0x7c0000,
  33         t => 20,
  34 );
  35 my $prog = $0;
  36 $prog =~ s/^.*\///;
  37 getopts("r:k:o:s:f:a:l:t:vh", \%arg);
  38
  39 die "usage: $prog ~opts~
  40
  41   -r <file>     : input rootfs file
  42   -k <file>     : input kernel file
  43   -o <file>     : output image file, default $arg{o}
  44   -s <size_kb>  : redboot script size, default ".sprintf('%d', parse_num($arg{s}))."
  45   -f <baseaddr> : flash base, default ".sprintf('0x%x', parse_num($arg{f}))."
  46   -a <loadaddr> : Kernel load address, default ".sprintf('0x%x', parse_num($arg{a}))."
  47   -l <linux_kb> : linux partition size, default ".sprintf('0x%x', parse_num($arg{l}))."
  48   -t <timeout>  : redboot script timeout, default ".sprintf('%d', parse_num($arg{t}))."
  49   -v            : be more verbose
  50   -h            : help, version $version
  51
  52 EXAMPLES:
  53     $prog -k kern -r rootfs
  54 " if $arg{h} || !$arg{k} || !$arg{r};
  55
  56 sub parse_num
  57 {
  58         my $num = @_[0];
  59         if (index(lc($num), lc("0x")) == 0) {
  60                 return hex($num);
  61         } else {
  62                 return $num + 0;
  63         }
  64 }
  65
  66 sub gen_script
  67 {
  68         my $kernel_off = parse_num($arg{s});
  69         my $kernel_addr = parse_num($arg{f});
  70         my $kernel_len = stat($arg{k})->size;
  71
  72         my $rootfs_off = $kernel_off + $kernel_len;
  73         my $rootfs_addr = $kernel_addr + $kernel_len;
  74         my $rootfs_len = parse_num($arg{l}) - $kernel_len;
  75         my $rootfs_size = stat($arg{r})->size;
  76
  77         my $load_addr = parse_num($arg{a});
  78
  79         my $timeout = parse_num($arg{t});
  80
  81         if ($arg{v}) {
  82                 printf "kernel_off: 0x%x(%u)\n", $kernel_off, $kernel_off;
  83                 printf "kernel_addr: 0x%x(%u)\n", $kernel_addr, $kernel_addr;
  84                 printf "kernel_len: 0x%x(%u)\n", $kernel_len, $kernel_len;
  85
  86                 printf "rootfs_off: 0x%x(%u)\n", $rootfs_off, $rootfs_off;
  87                 printf "rootfs_addr: 0x%x(%u)\n", $rootfs_addr, $rootfs_addr;
  88                 printf "rootfs_len: 0x%x(%u)\n", $rootfs_len, $rootfs_len;
  89                 printf "rootfs_size: 0x%x(%u)\n", $rootfs_size, $rootfs_size;
  90         }
  91
  92         open(FO, ">$arg{o}");
  93         printf FO "fis init -f\n";
  94         printf FO "\n";
  95         printf FO "fconfig boot_script true\n";
  96         printf FO "fconfig boot_script_data\n";
  97         printf FO "fis load -b 0x%x -d kernel\n", $load_addr;
  98         printf FO "exec -c \"noinitrd\" 0x%x\n", $load_addr;
  99         printf FO "\n";
 100         printf FO "fconfig boot_script_timeout %d\n", $timeout;
 101         printf FO "\n";
 102         printf FO "fis create -o 0x%x -f 0x%x -l 0x%x kernel\n", $kernel_off, $kernel_addr, $kernel_len;
 103         printf FO "\n";
 104         printf FO "fis create -o 0x%x -s 0x%x -f 0x%x -l 0x%x rootfs\n", $rootfs_off, $rootfs_size, $rootfs_addr, $rootfs_len;
 105         printf FO "\n";
 106         printf FO "reset\n";
 107         close FO;
 108 }
 109
 110 # MAIN
 111 gen_script();