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/howtos/x60tablet_unbrick.html') 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 @@ - - - - - - - - - Libreboot documentation: Unbricking the ThinkPad X60 Tablet - - - - -
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Unbricking the ThinkPad X60

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Or go back to main index

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Table of Contents

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Hardware requirements

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Software requirements

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Brick type 1: bucts not reset.

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- 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

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- 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). -

- -

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- Remove those screws:
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- Remove the HDD:
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- Push keyboard forward to loosen it:
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- Lift:
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- Remove those:
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- Also remove that (marked) and unroute the antenna cables:
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- Some X60T's you have to unroute those too:
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- Remove the LCD extend board screws. Also remove those screws (see blue marks) and remove/unroute the cables and remove the metal plate:
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- Remove that screw and then remove the board:
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- 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:
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- Pomona 5250:
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- Connect pomona:
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- Connect pirate to USB on 2nd computer:
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- Pirate is active:
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- 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. 
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- -

- 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. -

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- 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