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authorLibreboot Contributor <contributor@libreboot.org>2020-03-18 17:20:14 +0100
committerLibreboot Contributor <contributor@libreboot.org>2020-03-18 17:20:27 +0100
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Creation of i18n folder containing translations of the libreboot project. Added french one, not finished.
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+---
+title: ThinkPad X60 Tablet Recovery guide
+x-toc-enable: true
+...
+
+This section documents how to recover from a bad flash that prevents
+your ThinkPad X60 Tablet from booting.
+
+Brick type 1: bucts not reset. {#bucts_brick}
+==============================
+
+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:\
+![](../images/x60t_unbrick/0008.JPG)\
+
+\*Those dd commands should be applied to all newly compiled X60 ROM
+images (the ROM images 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 system that
+still has Lenovo BIOS running, using those instructions:
+<http://www.coreboot.org/Board:lenovo/x60/Installation>.
+
+bad rom (or user error), system won't boot {#recovery}
+===========================================
+
+In this scenario, you compiled a ROM that had an incorrect
+configuration, or there is an actual bug preventing your system 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 system is bricked and
+will not boot at all.
+
+"Unbricking" means flashing a known-good (working) ROM. The problem:
+you can't boot the system, making this difficult. In this situation,
+external hardware (see hardware requirements above) is needed which can
+flash the SPI chip (where libreboot resides).
+
+![](../images/x60t_unbrick/0000.JPG)
+
+Remove those screws:\
+![](../images/x60t_unbrick/0001.JPG)
+
+Remove the HDD:\
+![](../images/x60t_unbrick/0002.JPG)
+
+Push keyboard forward to loosen it:\
+![](../images/x60t_unbrick/0003.JPG)
+
+Lift:\
+![](../images/x60t_unbrick/0004.JPG)
+
+Remove those:\
+![](../images/x60t_unbrick/0005.JPG)
+
+![](../images/x60t_unbrick/0006.JPG)
+
+Also remove that (marked) and unroute the antenna cables:\
+![](../images/x60t_unbrick/0007.JPG)
+
+For some X60T laptops, you have to unroute those too:\
+![](../images/x60t_unbrick/0010.JPG)
+
+Remove the LCD extend board screws. Also remove those screws (see blue
+marks) and remove/unroute the cables and remove the metal plate:\
+![](../images/x60t_unbrick/0008.JPG)
+
+Remove that screw and then remove the board:\
+![](../images/x60t_unbrick/0009.JPG)
+
+Now wire up the BBB and the Pomona with your PSU.\
+Refer to [bbb\_setup.md](bbb_setup.md) for how to setup the BBB for
+flashing.\
+*Note, the guide mentions a 3.3v DC PSU but you don't need this on the
+X60 Tablet: if you don't have or don't want to use an external PSU,
+then make sure not to connect the 3.3v leads mentioned in the guide;
+instead, connect the AC adapter (the one that normally charges your
+battery) so that the board has power (but don't boot it up)*
+![](../images/x60t_unbrick/0011.JPG)\
+Correlate the following with the BBB guide linked above:
+
+ POMONA 5250:
+ === golden finger and wifi switch ====
+ 18 - - 1
+ 22 - - NC ---------- audio jacks are on this end
+ NC - - 21
+ 3.3V (PSU) - - 17 - this is pin 1 on the flash chip
+ === CPU fan ===
+ This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack.
+
+Connecting the BBB and pomona (in this image, an external 3.3v DC PSU
+was used):\
+![](images/x60/th_bbb_flashing.jpg)
+
+Flashrom binaries for ARM (tested on a BBB) are distributed in
+libreboot\_util. Alternatively, libreboot also distributes flashrom
+source code which can be built.
+
+SSH'd into the BBB:
+
+ # ./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -w
+
+yourrom.rom
+
+It should be `Verifying flash... VERIFIED` at the end. If flashrom
+complains about multiple flash chip definitions detected, then choose
+one of them following the instructions in the output.
+
+Reverse the steps to re-assemble your system.
+
+Copyright © 2014, 2015 Leah Rowe <info@minifree.org>\
+
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the GNU Free Documentation License Version 1.3 or any later
+version published by the Free Software Foundation
+with no Invariant Sections, no Front Cover Texts, and no Back Cover Texts.
+A copy of this license is found in [../fdl-1.3.md](../fdl-1.3.md)