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| author | Francis Rowe <info@gluglug.org.uk> | 2014-11-06 01:52:36 +0000 |
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| committer | Francis Rowe <info@gluglug.org.uk> | 2014-11-06 01:52:36 +0000 |
| commit | 8b2219bfa2da36e7809588ef723a10483a6e137f (patch) | |
| tree | 8c4d74b9efbdabc1a2604b8cbd508c006c225241 /docs/install/x60tablet_unbrick.html | |
| parent | 7429bdcdbb4fc51c61897115112468642afeecfc (diff) | |
| download | librebootfr-8b2219bfa2da36e7809588ef723a10483a6e137f.tar.gz librebootfr-8b2219bfa2da36e7809588ef723a10483a6e137f.zip | |
Documentation: *major* cleanup.
Cleanup was long overdue. Old structure was messy and inefficient.
Diffstat (limited to 'docs/install/x60tablet_unbrick.html')
| -rw-r--r-- | docs/install/x60tablet_unbrick.html | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/docs/install/x60tablet_unbrick.html b/docs/install/x60tablet_unbrick.html new file mode 100644 index 00000000..b5aad3c5 --- /dev/null +++ b/docs/install/x60tablet_unbrick.html @@ -0,0 +1,209 @@ +<!DOCTYPE html> +<html> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1"> + + <style type="text/css"> + @import url('../css/main.css'); + </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/">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="../images/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">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="../images/x60t_unbrick/0000.JPG" alt="" /> + </p> + + <p> + Remove those screws:<br/> + <img src="../images/x60t_unbrick/0001.JPG" alt="" /> + </p> + + <p> + Remove the HDD:<br/> + <img src="../images/x60t_unbrick/0002.JPG" alt="" /> + </p> + + <p> + Push keyboard forward to loosen it:<br/> + <img src="../images/x60t_unbrick/0003.JPG" alt="" /> + </p> + + <p> + Lift:<br/> + <img src="../images/x60t_unbrick/0004.JPG" alt="" /> + </p> + + <p> + Remove those:<br/> + <img src="../images/x60t_unbrick/0005.JPG" alt="" /> + </p> + + <p> + + <img src="../images/x60t_unbrick/0006.JPG" alt="" /> + </p> + + <p> + Also remove that (marked) and unroute the antenna cables:<br/> + <img src="../images/x60t_unbrick/0007.JPG" alt="" /> + </p> + + <p> + Some X60T's you have to unroute those too:<br/> + <img src="../images/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="../images/x60t_unbrick/0008.JPG" alt="" /> + </p> + + <p> + Remove that screw and then remove the board:<br/> + <img src="../images/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">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">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">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="../images/x60t_unbrick/0011.JPG" alt="" /><br/> + (SPI chip here is on the bottom of the board) + </p> + + <p> + Bus pirate:<br/> + <img src="../images/x60_unbrick/0019.jpg" alt="" /> + </p> + + <p> + Pomona 5250:<br/> + <img src="../images/x60_unbrick/0020.jpg" alt="" /> + </p> + + <p> + Connect pomona:<br/> + <img src="../images/x60_unbrick/0022.jpg" alt="" /> + </p> + + <p> + Connect pirate to USB on 2nd computer:<br/> + <img src="../images/x60_unbrick/0024.jpg" alt="" /> + </p> + + <p> + <img src="../images/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> |