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/t60_unbrick.html') diff --git a/docs/howtos/t60_unbrick.html b/docs/howtos/t60_unbrick.html deleted file mode 100644 index 69648e1..0000000 --- a/docs/howtos/t60_unbrick.html +++ /dev/null @@ -1,319 +0,0 @@ - - - - - - - - - Libreboot documentation: Unbricking the ThinkPad T60 - - - - -
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Unbricking the ThinkPad T60

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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 T60 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. - (it says x60, but instructions for t60 are identical) -

- -

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 and remove the HDD:
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- Lift off the palm rest:
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- Lift up the keyboard, pull it back a bit, flip it over like that and then disconnect it from the board:
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- Gently wedge both sides loose:
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- Remove that cable from the position:
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- Now remove that bezel. Remove wifi, nvram battery and speaker connector (also remove 56k modem, on the left of wifi):
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- Remove those screws:
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- Disconnect the power jack:
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- Remove nvram battery:
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- Disconnect cable (for 56k modem) and disconnect the other cable:
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- Disconnect speaker cable:
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- Disconnect the other end of the 56k modem cable:
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- Make sure you removed it:
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- Unscrew those:
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- Make sure you removed those:
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- Disconnect LCD cable from board:
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- Remove those screws then remove the LCD assembly:
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- Once again, make sure you removed those:
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- Remove the shielding containing the motherboard, then flip it over. Remove these screws, placing them on a steady - surface in the same layout as they were in before you removed them. Also, you should mark each screw hole after removing the - screw (a permanent marker pen will do), this is so that you have a point of reference when re-assembling the machine:
- - -

- -

- 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.
- (it says X60 but instructions are virtually the same for the T60, with except to physical differences in how to disassemble the machine)
- 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):
- -

- -

- Connecting the pomona:
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- Connect programmer to 2nd computer:
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- Programmer has power:
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- -

- Now flash the bricked machine using the 2nd computer. in my case I did:
- flashrom -p buspirate_spi:dev=/dev/ttyUSB0 -w bin/t60/libreboot_usqwerty.rom
- Note: there are also other ROM images for T60
- Note: this is using buspirate as the programmer, so it is flashing the T60, not the 2nd computer!
- Here's my terminal window on the 2nd computer (also the programmer is active):
-
- So, you should see the following:
- -- - 

-			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 T60 back together. So let's do that now. -

- -

- Put those screws back:
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- Put it back into lower chassis:
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- Attach LCD and insert screws (also, attach the lcd cable to the board):
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- Insert those screws:
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- On the CPU (and there is another chip south-east to it, sorry forgot to take pic) - clean off the old thermal paste (rubbing a1ocheal (misspelling intentional. halal internet)) and apply new (Artic Silver 5 is good, others are good too) - you should also clean the heatsink the same way
- -

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- Attach the heatsink and install the screws (also, make sure to install the AC jack as highlighted):
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- Reinstall that upper bezel:
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- Do that:
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- Re-attach modem, wifi, (wwan?), and all necessary cables. Sorry, forgot to take pics. Look at previous removal steps to see where they go back to. -

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- Attach keyboard and install nvram battery:
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- Place keyboard and (sorry, forgot to take pics) reinstall the palmrest and insert screws on the underside:
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- -

- It lives!
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- -

- Always stress test ('stress -c 2' and xsensors. below 90C is ok) when replacing cpu paste/heatsink:
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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