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| author | Francis Rowe <info@gluglug.org.uk> | 2014-11-05 20:52:36 (EST) |
|---|---|---|
| committer | Francis Rowe <info@gluglug.org.uk> | 2014-11-05 20:52:36 (EST) |
| commit | 8b2219bfa2da36e7809588ef723a10483a6e137f (patch) | |
| tree | 8c4d74b9efbdabc1a2604b8cbd508c006c225241 /docs/howtos/x60tablet_unbrick.html | |
| parent | 7429bdcdbb4fc51c61897115112468642afeecfc (diff) | |
| download | libreboot-8b2219bfa2da36e7809588ef723a10483a6e137f.zip libreboot-8b2219bfa2da36e7809588ef723a10483a6e137f.tar.gz libreboot-8b2219bfa2da36e7809588ef723a10483a6e137f.tar.bz2 | |
Documentation: *major* cleanup.
Cleanup was long overdue. Old structure was messy and inefficient.
Diffstat (limited to 'docs/howtos/x60tablet_unbrick.html')
| -rw-r--r-- | docs/howtos/x60tablet_unbrick.html | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/docs/howtos/x60tablet_unbrick.html b/docs/howtos/x60tablet_unbrick.html deleted file mode 100644 index da60227..0000000 --- a/docs/howtos/x60tablet_unbrick.html +++ /dev/null @@ -1,219 +0,0 @@ -<!DOCTYPE html> -<html> -<head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - - <style type="text/css"> - body { - background:#fff; - color:#000; - font-family:sans-serif; - font-size:1em; - } - </style> - - <title>Libreboot documentation: Unbricking the ThinkPad X60 Tablet</title> -</head> - -<body> - - <header> - <h1>Unbricking the ThinkPad X60</h1> - <aside>This guide will show you how to recover from a bad flash that prevents your ThinkPad X60 Tablet from booting.</aside> - </header> - - <p>Or go <a href="../index.html">back to main index</a></p> - - <h2>Table of Contents</h2> - <ul> - <li><a href="#hardware_requirements">Hardware Requirements</a></li> - <li><a href="#software_requirements">Software Requirements</a></li> - <li> - Types of brick: - <ul> - <li><a href="#bucts_brick">Brick type 1: bucts not reset</a></li> - <li><a href="#recovery">Brick type 2: bad rom (or user error), machine won't boot</a></li> - </ul> - </li> - </ul> - - <h1 id="hardware_requirements">Hardware requirements</h1> - <ul> - <li>a 2nd computer (maybe another X60 Tablet. any computer will do)</li> - <li>external flashrom-compatible programmer (I'm using the "bus pirate") - <li>SOIC-8 IC clip (I'm using the Pomona 5250)</li> - <li>Cable (programmer<>clip) - mine came with the bus pirate.</li> - <li>USB mini a to b cable (for buspirate<>computer connection).</li> - </ul> - - <h1 id="software_requirements">Software requirements</h1> - <ul> - <li>GNU/Linux (on the 2nd computer)</li> - <li>flashrom software (on the 2nd computer): <a href="http://flashrom.org/" target="_blank">http://flashrom.org/</a> - </ul> - - <h1 id="bucts_brick">Brick type 1: bucts not reset.</h1> - <p> - You still have Lenovo BIOS, or you had libreboot running and you flashed another ROM; and you had bucts 1 set and - the ROM wasn't dd'd.* or if Lenovo BIOS was present and libreboot wasn't flashed.<br/><br/> - - In this case, unbricking is easy: reset BUC.TS to 0 by removing that yellow cmos coin (it's a battery) and putting it back after a minute or two:<br/> - <img src="x60t_unbrick/0008.JPG" alt="" /><br/><br/> - - *Those dd commands should be applied to all newly compiled X60 ROM's (the ROM's in libreboot binary archives already have this applied!):<br/> - dd if=coreboot.rom of=top64k.bin bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x10000] count=64k<br/> - dd if=coreboot.rom bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k | hexdump<br/> - dd if=top64k.bin of=coreboot.rom bs=1 seek=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k conv=notrunc<br/> - (doing this makes the ROM suitable for use when flashing a machine that still has Lenovo BIOS running, - using those instructions: <a href="http://www.coreboot.org/Board:lenovo/x60/Installation" target="_blank">http://www.coreboot.org/Board:lenovo/x60/Installation</a>. - </p> - - <h1 id="recovery">bad rom (or user error), machine won't boot</h1> - <p> - In this scenario, you compiled a ROM that had an incorrect configuration, or there is an actual bug preventing your machine from - booting. Or, maybe, you set BUC.TS to 0 and shut down after first flash while Lenovo BIOS was running. In any case, your machine is bricked and will not boot at all. - </p> - <p> - "Unbricking" means flashing a known-good (working) ROM. The problem: you can't boot the machine, making this difficult. In this situation, external hardware (see hardware requirements above) is needed which can flash the SPI chip (where libreboot resides). - </p> - - <p> - <img src="x60t_unbrick/0000.JPG" alt="" /> - </p> - - <p> - Remove those screws:<br/> - <img src="x60t_unbrick/0001.JPG" alt="" /> - </p> - - <p> - Remove the HDD:<br/> - <img src="x60t_unbrick/0002.JPG" alt="" /> - </p> - - <p> - Push keyboard forward to loosen it:<br/> - <img src="x60t_unbrick/0003.JPG" alt="" /> - </p> - - <p> - Lift:<br/> - <img src="x60t_unbrick/0004.JPG" alt="" /> - </p> - - <p> - Remove those:<br/> - <img src="x60t_unbrick/0005.JPG" alt="" /> - </p> - - <p> - - <img src="x60t_unbrick/0006.JPG" alt="" /> - </p> - - <p> - Also remove that (marked) and unroute the antenna cables:<br/> - <img src="x60t_unbrick/0007.JPG" alt="" /> - </p> - - <p> - Some X60T's you have to unroute those too:<br/> - <img src="x60t_unbrick/0010.JPG" alt="" /> - </p> - - <p> - Remove the LCD extend board screws. Also remove those screws (see blue marks) and remove/unroute the cables and remove the metal plate:<br/> - <img src="x60t_unbrick/0008.JPG" alt="" /> - </p> - - <p> - Remove that screw and then remove the board:<br/> - <img src="x60t_unbrick/0009.JPG" alt="" /> - </p> - - <p> - At this point, you should wire up your programmer according to it's documentation. For me, this was (see: "SparkFun cable pin reference"):<br/> - <a href="http://dangerousprototypes.com/docs/Common_Bus_Pirate_cable_pinouts" target="_blank">http://dangerousprototypes.com/docs/Common_Bus_Pirate_cable_pinouts</a>.<br/> - Correlating with the following information, I was able to wire up my pirate correctly:<br/> - <a href="http://flashrom.org/Bus_Pirate#Connections" target="_blank">http://flashrom.org/Bus_Pirate#Connections</a><br/> - And by following that advice:<br/> - <a href="http://www.coreboot.org/Board:lenovo/x60/Installation#Howto" target="_blank">http://www.coreboot.org/Board:lenovo/x60/Installation#Howto</a>.<br/> - Note: that last page says to wire up only those 5 pins (see below) like that: 1, 2, 4, 5, 6.<br/> - Note: and then, for power it says (on that coreboot.org page) to connect the power jack to the board and connect the - AC adapter (without powering on the board).<br/> - Note: I ignored that advice, and wired up all 8 pins. And it worked.<br/> - - Here is the pinout (correlate it with your programmer's documentation):<br/> - <img src="x60t_unbrick/0011.JPG" alt="" /><br/> - (SPI chip here is on the bottom of the board) - </p> - - <p> - Bus pirate:<br/> - <img src="x60_unbrick/0019.jpg" alt="" /> - </p> - - <p> - Pomona 5250:<br/> - <img src="x60_unbrick/0020.jpg" alt="" /> - </p> - - <p> - Connect pomona:<br/> - <img src="x60_unbrick/0022.jpg" alt="" /> - </p> - - <p> - Connect pirate to USB on 2nd computer:<br/> - <img src="x60_unbrick/0024.jpg" alt="" /> - </p> - - <p> - Pirate is active:<br/> - <img src="x60_unbrick/0023.jpg" alt="" /> - </p> - - <p> - <img src="x60_unbrick/0025.jpg" alt="" /> - </p> - - <p> - On the 2nd machine, I did: <b>flashrom -p buspirate_spi:dev=/dev/ttyUSB0 -w bin/x60t/libreboot_ukqwerty.rom</b> - </p> - - <pre> - flashrom v0.9.5.2-r1517 on Linux 3.2.0-61-generic (i686), built with libpci 3.1.8, GCC 4.6.3, little endian - flashrom is free software, get the source code at http://www.flashrom.org - - Calibrating delay loop... delay loop is unreliable, trying to continue OK. - Found Macronix flash chip "MX25L1605" (2048 kB, SPI) on buspirate_spi. - Reading old flash chip contents... done. - Erasing and writing flash chip... Erase/write done. - Verifying flash... VERIFIED. - </pre> - - <p> - At the end it says "VERIFIED", which means that the procedure worked. If you see this, it means that you can put your X60T back together. So let's do that now. - </p> - - <p> - Reverse the steps to re-assemble your machine. - </p> - -<hr/> - - <p> - Copyright © 2014 Francis Rowe <info@gluglug.org.uk><br/> - This document is released under the Creative Commons Attribution-ShareAlike 4.0 International Public License and all future versions. - A copy of the license can be found at <a href="../license.txt">../license.txt</a>. - </p> - - <p> - This document is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See <a href="../license.txt">../license.txt</a> for more information. - </p> - -</body> -</html> |