From 8b2219bfa2da36e7809588ef723a10483a6e137f Mon Sep 17 00:00:00 2001 From: Francis Rowe Date: Wed, 05 Nov 2014 20:52:36 -0500 Subject: Documentation: *major* cleanup. Cleanup was long overdue. Old structure was messy and inefficient. --- (limited to 'docs/install/x60tablet_unbrick.html') diff --git a/docs/install/x60tablet_unbrick.html b/docs/install/x60tablet_unbrick.html new file mode 100644 index 0000000..b5aad3c --- /dev/null +++ b/docs/install/x60tablet_unbrick.html @@ -0,0 +1,209 @@ + + + + + + + + + Libreboot documentation: Unbricking the ThinkPad X60 Tablet + + + + +
+

Unbricking the ThinkPad X60

+ +
+ +

Or go back to main index

+ +

Table of Contents

+ + +

Hardware requirements

+ + +

Software requirements

+ + +

Brick type 1: bucts not reset.

+

+ 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.

+ + 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:
+

+ + *Those dd commands should be applied to all newly compiled X60 ROM's (the ROM's in libreboot binary archives already have this applied!):
+ dd if=coreboot.rom of=top64k.bin bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x10000] count=64k
+ dd if=coreboot.rom bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k | hexdump
+ dd if=top64k.bin of=coreboot.rom bs=1 seek=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k conv=notrunc
+ (doing this makes the ROM suitable for use when flashing a machine that still has Lenovo BIOS running, + using those instructions: http://www.coreboot.org/Board:lenovo/x60/Installation. +

+ +

bad rom (or user error), machine won't boot

+

+ 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. +

+

+ "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). +

+ +

+ +

+ +

+ Remove those screws:
+ +

+ +

+ Remove the HDD:
+ +

+ +

+ Push keyboard forward to loosen it:
+ +

+ +

+ Lift:
+ +

+ +

+ Remove those:
+ +

+ +

+ + +

+ +

+ Also remove that (marked) and unroute the antenna cables:
+ +

+ +

+ Some X60T's you have to unroute those too:
+ +

+ +

+ Remove the LCD extend board screws. Also remove those screws (see blue marks) and remove/unroute the cables and remove the metal plate:
+ +

+ +

+ Remove that screw and then remove the board:
+ +

+ +

+ At this point, you should wire up your programmer according to it's documentation. For me, this was (see: "SparkFun cable pin reference"):
+ http://dangerousprototypes.com/docs/Common_Bus_Pirate_cable_pinouts.
+ Correlating with the following information, I was able to wire up my pirate correctly:
+ http://flashrom.org/Bus_Pirate#Connections
+ And by following that advice:
+ http://www.coreboot.org/Board:lenovo/x60/Installation#Howto.
+ Note: that last page says to wire up only those 5 pins (see below) like that: 1, 2, 4, 5, 6.
+ 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).
+ Note: I ignored that advice, and wired up all 8 pins. And it worked.
+ + Here is the pinout (correlate it with your programmer's documentation):
+
+ (SPI chip here is on the bottom of the board) +

+ +

+ Bus pirate:
+ +

+ +

+ Pomona 5250:
+ +

+ +

+ Connect pomona:
+ +

+ +

+ Connect pirate to USB on 2nd computer:
+ +

+ +

+ +

+ +

+ On the 2nd machine, I did: flashrom -p buspirate_spi:dev=/dev/ttyUSB0 -w bin/x60t/libreboot_ukqwerty.rom +

+ + 
+			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. 
+
+ +

+ 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. +

+ +

+ Reverse the steps to re-assemble your machine. +

+ +
+ +

+ Copyright © 2014 Francis Rowe <info@gluglug.org.uk>
+ 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 ../license.txt. +

+ +

+ 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 ../license.txt for more information. +

+ + + -- cgit v0.9.1