--- /dev/null
+#!/usr/bin/perl
+use warnings;
+use strict;
+
+use Getopt::Long;
+
+my $mode = lc($ARGV[0]) || die "usage: $0 (backup|restore|update)\n";
+
+my $cmdline = <DATA>;
+my $rkflashtool = '/virtual/android/android-command-line/rkflashtool/rkflashtool';
+
+die "rkflashtool not found: $!" unless -x $rkflashtool;
+
+$cmdline =~ s/^.*mtdparts=\w+:([^\s]+)\s.*$/$1/;
+warn $cmdline;
+
+foreach ( split(/,/,$cmdline) ) {
+ print "$_\n";
+ my ($size,$start,$name) = split(/[\@\(\)]/, $_, 4);
+
+ my $cmd;
+
+ my $backup_file = "$start-$size-$name";
+
+ if ( $mode eq 'backup' ) {
+
+ $cmd = "$rkflashtool r $start $size > $backup_file";
+
+ } elsif ( $mode eq 'restore' ) {
+
+ if ( -e $backup_file && -s $backup_file ) {
+ $cmd = "$rkflashtool w $start $size < $backup_file";
+ } else {
+ warn "SKIP $backup_file restore: $!\n";
+ next;
+ }
+
+ } elsif ( $mode eq 'update' ) {
+
+ if ( -e "$name.img" ) {
+ $cmd = "$rkflashtool w $start $size < $name.img";
+ } else {
+ warn "SKIP $start $size $name - not found in update\n";
+ next;
+ }
+ }
+
+ warn "# $cmd\n";
+ system($cmd) == 0 || die $!;
+}
+
+if ( $mode eq 'update' || $mode eq 'restore' ) {
+ warn "# reboot Android\n";
+ system("$rkflashtool r");
+}
+
+__DATA__
+console=ttyFIQ0 androidboot.console=ttyFIQ0 init=/init initrd=0x62000000,0x00200000 mtdparts=rk29xxnand:0x00002000@0x00002000(misc),0x00004000@0x00004000(kernel),0x00008000@0x00008000(boot),0x00008000@0x00010000(recovery),0x000C0000@0x00018000(backup),0x00040000@0x000D8000(cache),0x00300000@0x00118000(userdata),0x00002000@0x00418000(kpanic),0x00100000@0x0041A000(system),-@0x0053A000(user) bootver=2012-08-08#1.14 firmware_ver=4.0.4