Date: Mon, 22 Aug 2016 10:22:04 +0100 Subject: actually add the documentation directory. (I forgot git add in last commit) --- docs/install/x60tablet_unbrick.html | 215 ++++++++++++++++++++++++++++++++++++ 1 file changed, 215 insertions(+) create mode 100644 docs/install/x60tablet_unbrick.html (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 00000000..8da9d2f9 --- /dev/null +++ b/docs/install/x60tablet_unbrick.html @@ -0,0 +1,215 @@ + + + + + + + + + ThinkPad X60 Tablet: Recovery guide + + + + +

ThinkPad X60 Tablet: Recovery guide

This section documents how to recover from a bad flash that prevents your ThinkPad X60 Tablet from booting.

Back to previous index

+ +

+ Types of brick: +
- Brick type 1: bucts not reset
- Brick type 2: bad rom (or user error), system won't boot
+

+ +

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 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

+ 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). +

+ +

+ Remove those screws:
+ +

+ +

+ Remove the HDD:
+ +

+ +

+ Push keyboard forward to loosen it:
+ +

+ +

+ Lift:
+ +

+ +

+ Remove those:
+ +

+ +

+ + +

+ +

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

+ +

+ For some X60T laptops, 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:
+ +

+ +

+ Now wire up the BBB and the Pomona with your PSU.
+ Refer to bbb_setup.html 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) +
+ 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):
+ +

+ +

+ 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 the license can be found at ../gfdl-1.3.txt +

+ +

+ Updated versions of the license (when available) can be found at + https://www.gnu.org/licenses/licenses.html +

+ +

+ UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE + EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS + AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF + ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS, + IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION, + WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR + PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS, + ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT + KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT + ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU. +

+ TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE + TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION, + NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT, + INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES, + COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR + USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN + ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR + DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR + IN PART, THIS LIMITATION MAY NOT APPLY TO YOU. +

+ The disclaimer of warranties and limitation of liability provided + above shall be interpreted in a manner that, to the extent + possible, most closely approximates an absolute disclaimer and + waiver of all liability. +

+ +

+ + + -- cgit v1.2.3-70-g09d2

ThinkPad X60 Tablet: Recovery guide

Table of Contents

Brick type 1: bucts not reset.

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