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| author | Francis Rowe <info@gluglug.org.uk> | 2014-08-11 09:00:00 (EDT) |
|---|---|---|
| committer | Michał Masłowski <mtjm@mtjm.eu> | 2014-08-22 14:29:49 (EDT) |
| commit | 8df313c4d6607181576471e08d7e909c9c0f33e9 (patch) | |
| tree | 249f6003e3293fd4049ad57c267fa7ec1c4269e4 /docs/howtos/x60tablet_unbrick.html | |
| parent | 7eca665d684a734d55b0bb26c4f1831d399c5330 (diff) | |
| download | libreboot-6dc536c3296b4ea7149bf8c255185325de1d09f5.zip libreboot-6dc536c3296b4ea7149bf8c255185325de1d09f5.tar.gz libreboot-6dc536c3296b4ea7149bf8c255185325de1d09f5.tar.bz2 | |
Libreboot release 6 beta 5.r20140811
- build: added 'luks', 'lvm', 'cmosdump' and 'cmostest' to the list of
modules for grub.elf
- Documentation: added pics showing T60 unbricking (still need to
write a tutorial)
- build: include cmos.layout
(coreboot/src/mainboard/manufacturer/model/cmos.layout) files in
libreboot_bin
- Documentation: added ../docs/howtos/x60tablet_unbrick.html
- Documentation: added ../docs/howtos/t60_unbrick.html
- Documentation: added ../docs/howtos/t60_lcd_15.html
- Documentation: added ../docs/howtos/t60_security.html
- Documentation: added ../docs/howtos/t60_heatsink.html
- Documentation: Renamed RELEASE.html to release.html
- Documentation: removed pcmcia reference in x60_security.html (it's
cardbus)
- Documentation: added preliminary information about randomized seal
(for physical intrusion detection) in x60_security.html and
t60_security.html
- Documentation: added preliminary information about
preventing/mitigating cold-boot attack in x60_security.html and
t60_security.html
- Documentation: added info to ../docs/index.html#macbook21 warning
about issues with macbook21
- Documentation: X60/T60: added information about checking custom
ROM's using dd to see whether or not the top 64K region is
duplicated below top or not. Advise caution about this in the
tutorial that deals with flashing on top of Lenovo BIOS, citing the
correct dd commands necessary if it is confirmed that the ROM has
not been applied with dd yet. (in the case that the user compiled
their own ROM's from libreboot, without using the build scripts, or
if they forgot to use dd, etc).
- Split resources/libreboot/patch/gitdiff into separate patch files
(getcb script updated to accomodate this change).
- Re-added .git files to bucts
- Fixed the oversight where macbook21_firstflash wasn't included in
binary archives
Diffstat (limited to 'docs/howtos/x60tablet_unbrick.html')
| -rw-r--r-- | docs/howtos/x60tablet_unbrick.html | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/docs/howtos/x60tablet_unbrick.html b/docs/howtos/x60tablet_unbrick.html new file mode 100644 index 0000000..975c764 --- /dev/null +++ b/docs/howtos/x60tablet_unbrick.html @@ -0,0 +1,212 @@ +<!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, All Rights Reserved.<br/> + See <a href="../license.html">../license.html</a> for license conditions. + </p> + +</body> +</html> |