OpenWrt – Blame information for rev 1
?pathlinks?
Rev | Author | Line No. | Line |
---|---|---|---|
1 | office | 1 | #!/usr/bin/env perl |
2 | # |
||
3 | # D-Link DSL-502T flash utility |
||
4 | # |
||
5 | # Copyright (c) 2007 Oliver Jowett <oliver@opencloud.com> |
||
6 | # |
||
7 | # Based on adam2flash.pl for the D-Link DSL-G6x4T, which is: |
||
8 | # Copyright (C) 2005 Felix Fietkau <mailto@nbd.name> |
||
9 | # based on fbox recovery util by Enrik Berkhan |
||
10 | # |
||
11 | # This program is free software; you can redistribute it and/or modify |
||
12 | # it under the terms of the GNU General Public License as published by |
||
13 | # the Free Software Foundation; either version 2 of the License, or |
||
14 | # (at your option) any later version. |
||
15 | # |
||
16 | # This program is distributed in the hope that it will be useful, |
||
17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
19 | # GNU General Public License for more details. |
||
20 | # |
||
21 | # You should have received a copy of the GNU General Public License |
||
22 | # along with this program; if not, write to the Free Software |
||
23 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||
24 | # |
||
25 | |||
26 | # The default DSL-502T mtd map looks like this: |
||
27 | # |
||
28 | # mtd0 0x90091000,0x903f0000 # filesystem |
||
29 | # mtd1 0x90010090,0x90091000 # kernel |
||
30 | # mtd2 0x90000000,0x90010000 # bootloader - DO NOT MODIFY |
||
31 | # mtd3 0x903f0000,0x90400000 # config space - DO NOT MODIFY |
||
32 | # mtd4 0x90010000,0x903f0000 # firmware signature + kernel + filesystem, used to flash new firmware |
||
33 | # |
||
34 | # i.e. the flash layout is: |
||
35 | # |
||
36 | # 90000000-9000FFFF mtd2 bootloader |
||
37 | # 90010000-9001008F ---- firmware signature ) |
||
38 | # 90010090-90090FFF mtd1 kernel ) mtd4 spans these three regions |
||
39 | # 90091000-903EFFFF mtd0 filesystem ) |
||
40 | # 903F0000-903FFFFF mtd3 config space |
||
41 | # |
||
42 | # The ADAM2 bootloader uses the mtd1 settings to find the start of the image to boot. |
||
43 | # The image to load contains information about the loadable size of the image. If ADAM2 sees |
||
44 | # that the image appears to extend beyond the end of mtd1, it will refuse to load it. On |
||
45 | # the DSL-502T, this manifests as the USB light blinking rapidly on boot. |
||
46 | # |
||
47 | # The OpenWRT kernel does not follow quite the same layout: |
||
48 | # (a) it does not have a 0x90-byte firmware signature prefix |
||
49 | # (b) it is larger than the default mtd1 size |
||
50 | # |
||
51 | # (a) would be avoidable (build a custom image with a 0x90-byte prefix) but (b) is unavoidable. |
||
52 | # So we *have* to change mtd1. The simplest thing to do seems to make it span all of |
||
53 | # the flashable area, producing this layout: |
||
54 | # |
||
55 | # mtd0 0x90091000,0x903f0000 # filesystem |
||
56 | # mtd1 0x90010000,0x903f0000 # kernel (CHANGED) |
||
57 | # mtd2 0x90000000,0x90010000 # bootloader - DO NOT MODIFY |
||
58 | # mtd3 0x903f0000,0x90400000 # config space - DO NOT MODIFY |
||
59 | # mtd4 0x90010000,0x903f0000 # kernel + filesystem, used to flash new firmware |
||
60 | # |
||
61 | # *** NOTE NOTE NOTE NOTE *** |
||
62 | # |
||
63 | # /dev/mtd0 .. /dev/mtd4 when using OpenWRT do **NOT** correspond to the ADAM2 mtd0-4 settings! |
||
64 | # Instead, OpenWRT scans the MTD itself and determines its own boundaries which are arranged |
||
65 | # quite differently to ADAM2. It will look something like this, see dmsg on boot: |
||
66 | # |
||
67 | # (/dev/mtd0) 0x00000000-0x00010000 : "loader" # Bootloader, read-only |
||
68 | # (/dev/mtd1) 0x003f0000-0x00400000 : "config" # Config space |
||
69 | # (/dev/mtd2) 0x00010000-0x003f0000 : "linux" # Firmware area (kernel + root fs + JFFS area) |
||
70 | # (/dev/mtd3) 0x000d0d58-0x003f0000 : "rootfs" # Root FS, starts immediately after kernel |
||
71 | # (/dev/mtd4) 0x00280000-0x003f0000 : "rootfs_data" # If rootfs is squashfs, start of JFFS area. |
||
72 | # |
||
73 | # All of those boundaries are autodetected by examining the data in flash. |
||
74 | # |
||
75 | # *** NOTE NOTE NOTE NOTE *** |
||
76 | |||
77 | use IO::Socket::INET; |
||
78 | use Socket; |
||
79 | use strict; |
||
80 | use warnings; |
||
81 | |||
82 | sub usage() { |
||
83 | print STDERR "Usage: $0 <ip> [-setmtd1] [-noflash] [firmware.bin]\n\n"; |
||
84 | print STDERR "Acquires the ADAM2 bootloader of a D-Link DSL-504T at <ip>\n"; |
||
85 | print STDERR "Power off the device, start this script, then power it on.\n"; |
||
86 | print STDERR "<ip> may be any spare address on the local subnet.\n\n"; |
||
87 | print STDERR "If a firmware file is specified, MTD settings are verified and\n"; |
||
88 | print STDERR "then the firmware is written to the router's flash.\n"; |
||
89 | print STDERR "The firmware type (D-Link or OpenWRT) is automatically detected.\n\n"; |
||
90 | print STDERR " -setmtd1 update mtd1 if it is not the appropriate value for this firmware\n"; |
||
91 | print STDERR " -noflash does normal checks, updates mtd1 if requested, but does not actually write firmware\n\n"; |
||
92 | exit 0; |
||
93 | } |
||
94 | |||
95 | my $ip = shift @ARGV; |
||
96 | $ip and $ip =~ /\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/ or usage(); |
||
97 | |||
98 | my $probe = IO::Socket::INET->new(Proto => 'udp', |
||
99 | Broadcast => 1, |
||
100 | LocalPort => 5035) or die "socket: $!"; |
||
101 | my $setip = unpack("N", inet_aton($ip)); |
||
102 | $setip > 0 or usage(); |
||
103 | |||
104 | my @packets; |
||
105 | foreach my $ver ([18, 1], [22, 2]) { |
||
106 | push @packets, pack("vCCVNV", 0, @$ver, 1, $setip, 0); |
||
107 | } |
||
108 | print STDERR "Looking for device: "; |
||
109 | my $broadcast = sockaddr_in(5035, INADDR_BROADCAST); |
||
110 | my $scanning; |
||
111 | my $box; |
||
112 | |||
113 | $SIG{"ALRM"} = sub { |
||
114 | return if --$scanning <= 0; |
||
115 | foreach my $packet (@packets) { |
||
116 | $probe->send($packet, 0, $broadcast); |
||
117 | } |
||
118 | print STDERR "."; |
||
119 | }; |
||
120 | |||
121 | $scanning = 15; |
||
122 | foreach my $packet (@packets) { |
||
123 | $probe->send($packet, 0, $broadcast); |
||
124 | } |
||
125 | print STDERR "."; |
||
126 | |||
127 | while($scanning) { |
||
128 | my $reply; |
||
129 | |||
130 | alarm(1); |
||
131 | if (my $peer = $probe->recv($reply, 16)) { |
||
132 | next if (length($reply) < 16); |
||
133 | my ($port, $addr) = sockaddr_in($peer); |
||
134 | my ($major, $minor1, $minor2, $code, $addr2) = unpack("vCCVV", $reply); |
||
135 | $addr2 = pack("N", $addr2); |
||
136 | if ($code == 2) { |
||
137 | $scanning = 0; |
||
138 | printf STDERR " found!\nADAM2 version $major.$minor1.$minor2 at %s (%s)\n", inet_ntoa($addr), inet_ntoa($addr2); |
||
139 | $box = inet_ntoa($addr); |
||
140 | } |
||
141 | } |
||
142 | } |
||
143 | |||
144 | $box or die " not found!\n"; |
||
145 | |||
146 | alarm(0); |
||
147 | |||
148 | { |
||
149 | package ADAM2FTP; |
||
150 | use base qw(Net::FTP); |
||
151 | |||
152 | # ADAM2 requires upper case commands, some brain dead firewall doesn't ;-) |
||
153 | sub _USER { |
||
154 | shift->command("USER",@_)->response() |
||
155 | } |
||
156 | |||
157 | sub _GETENV { |
||
158 | my $ftp = shift; |
||
159 | my ($ok, $name, $value); |
||
160 | |||
161 | $ftp->command("GETENV",@_); |
||
162 | while(length($ok = $ftp->response()) < 1) { |
||
163 | my $line = $ftp->getline(); |
||
164 | unless (defined($value)) { |
||
165 | chomp($line); |
||
166 | ($name, $value) = split(/\s+/, $line, 2); |
||
167 | } |
||
168 | } |
||
169 | $ftp->debug_print(0, "getenv: $value\n") |
||
170 | if $ftp->debug(); |
||
171 | return $value; |
||
172 | } |
||
173 | |||
174 | sub getenv { |
||
175 | my $ftp = shift; |
||
176 | my $name = shift; |
||
177 | return $ftp->_GETENV($name); |
||
178 | } |
||
179 | |||
180 | sub _REBOOT { |
||
181 | shift->command("REBOOT")->response() == Net::FTP::CMD_OK |
||
182 | } |
||
183 | |||
184 | sub reboot { |
||
185 | my $ftp = shift; |
||
186 | $ftp->_REBOOT; |
||
187 | $ftp->close; |
||
188 | } |
||
189 | } |
||
190 | |||
191 | my $file; |
||
192 | my $arg; |
||
193 | my $noflash = 0; |
||
194 | my $setmtd1 = 0; |
||
195 | while ($arg = shift @ARGV) { |
||
196 | if ($arg eq "-noflash") { $noflash = 1; } |
||
197 | elsif ($arg eq "-setmtd1") { $setmtd1 = 1; } |
||
198 | else { $file = $arg; } |
||
199 | } |
||
200 | |||
201 | if (!$file) { |
||
202 | print STDERR "No firmware file specified, exiting.\n"; |
||
203 | exit 0; |
||
204 | } |
||
205 | |||
206 | # |
||
207 | # Firmware checks |
||
208 | # |
||
209 | |||
210 | open FILE, "<$file" or die "can't open firmware file\n"; |
||
211 | |||
212 | # D-Link firmware starts with "MTD4" little-endian, then has an image header at 0x90 |
||
213 | # OpenWRT firmware just starts with an image header at 0x00 |
||
214 | |||
215 | my $signature; |
||
216 | my $sbytes = read FILE, $signature, 4; |
||
217 | ($sbytes == 4) or die "can't read firmware signature: $!"; |
||
218 | |||
219 | my $expectedmtd4 = "0x90010000,0x903f0000"; |
||
220 | my $fwtype; |
||
221 | my $expectedmtd1; |
||
222 | |||
223 | if ($signature eq "4DTM") { |
||
224 | seek FILE, 0x90, 0 or die "can't read firmware signature: $!"; |
||
225 | $sbytes = read FILE, $signature, 4; |
||
226 | ($sbytes == 4) or die "can't read firmware signature: $!"; |
||
227 | if ($signature eq "\x42\xfa\xed\xfe") { |
||
228 | $fwtype = "D-Link (little-endian)"; |
||
229 | $expectedmtd1 = "0x90010090,0x90091000"; |
||
230 | } elsif ($signature eq "\xde\xad\xbe\x42") { |
||
231 | $fwtype = "D-Link (big-endian)"; |
||
232 | $expectedmtd1 = "0x90010090,0x90091000"; |
||
233 | } |
||
234 | } elsif ($signature eq "\x42\xfa\xed\xfe") { |
||
235 | $fwtype = "OpenWRT (little-endian)"; |
||
236 | $expectedmtd1 = "0x90010000,0x903f0000"; |
||
237 | } elsif ($signature eq "\xde\xad\xbe\x42") { |
||
238 | $fwtype = "OpenWRT (big-endian)"; |
||
239 | $expectedmtd1 = "0x90010000,0x903f0000"; |
||
240 | } |
||
241 | |||
242 | $fwtype or die "Unknown firmware signature (are you sure that's the right firmware?)"; |
||
243 | print STDERR "Firmware type: $fwtype\n"; |
||
244 | |||
245 | # |
||
246 | # Bootloader login |
||
247 | # |
||
248 | |||
249 | print STDERR "logging into ADAM2 bootloader.. "; |
||
250 | my $ftp = ADAM2FTP->new($box, Debug => 0, Timeout => 600) or die "can't open control connection\n"; |
||
251 | $ftp->login("adam2", "adam2") or die "can't login\n"; |
||
252 | print STDERR "ok.\n"; |
||
253 | |||
254 | # |
||
255 | # Hardware checks |
||
256 | # |
||
257 | |||
258 | print STDERR "checking hardware.. "; |
||
259 | my $prd = $ftp->getenv("ProductID"); |
||
260 | my $usb = $ftp->getenv("usb_prod"); |
||
261 | print STDERR "$prd / $usb.\n"; |
||
262 | ($prd eq "AR7RD" || $prd eq "AR7DB") or die "doesn't look like a DSL-502T?"; |
||
263 | ($usb eq "DSL-502T") or die "doesn't look like a DSL-502T?"; |
||
264 | |||
265 | # |
||
266 | # MTD checks and update |
||
267 | # |
||
268 | |||
269 | print STDERR "checking MTD settings.. "; |
||
270 | |||
271 | my $mtd4 = $ftp->getenv("mtd4"); |
||
272 | ($mtd4 eq $expectedmtd4) or die "MTD4 was not as expected (should be '$expectedmtd4', was '$mtd4'). Cowardly refusing to do anything about it!"; |
||
273 | |||
274 | # check MTD1 setting and update if needed |
||
275 | my $mtd1 = $ftp->getenv("mtd1"); |
||
276 | if ($mtd1 ne $expectedmtd1) { |
||
277 | die "MTD1 was not as expected (should be '$expectedmtd1', was '$mtd1'). Run with -setmtd1 to reset mtd1" unless ($setmtd1); |
||
278 | print STDERR "Setting mtd1.. "; |
||
279 | ($ftp->command("SETENV","mtd1,$expectedmtd1")->response() == Net::FTP::CMD_OK) or die "can't set mtd1"; |
||
280 | $file = shift @ARGV; |
||
281 | } |
||
282 | |||
283 | print STDERR "ok.\n"; |
||
284 | |||
285 | # |
||
286 | # Firmware size check |
||
287 | # |
||
288 | |||
289 | my $fwsize = (stat(FILE))[7]; |
||
290 | printf STDERR "Firmware size: 0x%08x\n", $fwsize; |
||
291 | my $flashsize; |
||
292 | $mtd4 =~ /^(0x\w+),(0x\w+)$/ and $flashsize = hex($2) - hex($1); |
||
293 | printf STDERR "Available flash space: 0x%08x\n", $flashsize; |
||
294 | die "firmware is too large" if ($flashsize < $fwsize); |
||
295 | |||
296 | # |
||
297 | # Flash it! |
||
298 | # |
||
299 | |||
300 | if ($noflash) { |
||
301 | print STDERR "Not flashing firmware as -noflash was specified.\n"; |
||
302 | exit 0; |
||
303 | } |
||
304 | |||
305 | seek FILE, 0, 0, or die "can't seek in firmware: $!"; |
||
306 | |||
307 | print STDERR "Preparing to flash.. "; |
||
308 | ($ftp->command("MEDIA FLSH")->response() == Net::FTP::CMD_OK) or die "can't set MEDIA FLSH"; |
||
309 | $ftp->binary() or die "can't set binary mode"; |
||
310 | print STDERR "ok.\n"; |
||
311 | print STDERR "Erasing flash and establishing data connection (this may take a while): "; |
||
312 | |||
313 | my $dc = $ftp->stor("fs mtd4"); |
||
314 | $dc or die "can't open data connection: $!\n"; |
||
315 | print STDERR "ok.\n"; |
||
316 | |||
317 | print STDERR "Writing firmware: "; |
||
318 | while ($fwsize > 0) { |
||
319 | my $buffer; |
||
320 | my $len = ($fwsize > 1024 ? 1024 : $fwsize); |
||
321 | |||
322 | my $rbytes = read FILE, $buffer, $len; |
||
323 | ($rbytes < 0) and die "read error on firmware file: $!"; |
||
324 | ($rbytes == $len) or die "short read on firmware file ($rbytes < $len)"; |
||
325 | |||
326 | my $wbytes = $dc->write($buffer, $len, 600); |
||
327 | ($wbytes < 0) and die "write error on FTP data connection: $!"; |
||
328 | ($rbytes == $wbytes) or die "short write on FTP data connection ($wbytes < $rbytes)"; |
||
329 | |||
330 | $fwsize -= $len; |
||
331 | print STDERR "."; |
||
332 | } |
||
333 | |||
334 | $dc->close(); |
||
335 | print STDERR " done.\n"; |
||
336 | |||
337 | # |
||
338 | # Reboot |
||
339 | # |
||
340 | |||
341 | print STDERR "Rebooting device.\n"; |
||
342 | $ftp->reboot(); |