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diff --git a/docs/install/r400_external.html b/docs/install/r400_external.html new file mode 100644 index 0000000..ad6e4bd --- /dev/null +++ b/docs/install/r400_external.html @@ -0,0 +1,202 @@ +<!DOCTYPE html> +<html> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1"> + + <style type="text/css"> + @import url('../css/main.css'); + </style> + + <title>ThinkPad R400: flashing tutorial (BeagleBone Black)</title> +</head> + +<body> + + <div class="section"> + <h1 id="pagetop">Flashing the R400 with a BeagleBone Black</h1> + <p>Initial flashing instructions for X200.</p> + <p> + This guide is for those who want libreboot on their ThinkPad R400 + while they still have the original Lenovo BIOS present. This guide + can also be followed (adapted) if you brick your R400, to know how + to recover. + </p> + <p> + Before following this section, please make sure to setup your libreboot ROM properly first. + Although ROM images are provided pre-built in libreboot, there are some modifications that + you need to make to the one you chose before flashing. (instructions referenced later in + this guide) + </p> + + <p><a href="index.html">Back to main index</a></p> + </div> + + <div class="section"> + + <h1 id="flashchips">Flash chips</h1> + + <p> + There are two possible flash chip sizes for the R400: 4MiB + (32Mbit) or 8MiB (64Mbit). This can be identified by the type + of flash chip below the palmrest: 4MiB is SOIC-8 (8 pins), 8MiB + is SOIC-16 (16 pins). The X200S uses a WSON package and has the same + pinout as SOIC-8 (covered briefly later on in this guide) but + the chip is on the underside of the board (disassembly required). + </p> + + <p> + <a href="#pagetop">Back to top of page.</a> + </p> + + </div> + + <div class="section"> + + <h1>Initial BBB setup</h1> + + <p> + Refer to <a href="bbb_setup.html">bbb_setup.html</a> for how to + setup the BBB for flashing. + </p> + + <p> + The following shows how to connect clip to the BBB (on the P9 header), for SOIC-16 (clip: Pomona 5252): + </p> +<pre> +POMONA 5252 (correlate with the BBB guide) +=== ethernet jack and VGA port ==== + NC - - 21 + 1 - - 17 + NC - - NC + NC - - NC + NC - - NC + NC - - NC + 18 - - 3.3V PSU RED + 22 - - NC - this is pin 1 on the flash chip +=== SATA port === +<i>This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack.</i> +</pre> + <p> + The following shows how to connect clip to the BBB (on the P9 header), for SOIC-8 (clip: Pomona 5250): + </p> +<pre> +POMONA 5250 (correlate with the BBB guide) +=== RAM slots ==== + 18 - - 1 + 22 - - NC + NC - - 21 + 3.3V PSU RED - - 17 - this is pin 1 on the flash chip. in front of it is the screen. +=== slot where the AC jack is connected === +</pre> + + <h2> + Connect Pomona 5252/5250 to the R400 flash chip, and dump/flash + </h2> + <p> + <a href="images/r400/r400_pomona.jpg">images/r400/r400_pomona.jpg</a> + shows everything connected. In this picture, the R400 is being flashed + with the BBB. + </p> + <p> + No disassembly instructions yet, unfortunately. Check videos online or + look at the Hardware Maintenance Manual from Lenovo for this machine. + You will need to completely disassemble the machine, removing the motherboard + from its metal shell. + Connect your 5252/5250 (make sure to get it the right way round). + Then connect the 3.3v PSU wire (red one) and make sure that everything else is connected. + </p> + <p> + I did (SSH'd into the BBB):<br/> + # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512</b><br/> + In my case, the output was: + </p> +<pre> +flashrom v0.9.7-r1854 on Linux 3.8.13-bone47 (armv7l) +flashrom is free software, get the source code at http://www.flashrom.org +Calibrating delay loop... OK. +Found Macronix flash chip "MX25L6405(D)" (8192 kB, SPI) on linux_spi. +Found Macronix flash chip "MX25L6406E/MX25L6436E" (8192 kB, SPI) on linux_spi. +Found Macronix flash chip "MX25L6445E/MX25L6473E" (8192 kB, SPI) on linux_spi. +Multiple flash chip definitions match the detected chip(s): "MX25L6405(D)", "MX25L6406E/MX25L6436E", "MX25L6445E/MX25L6473E" +Please specify which chip definition to use with the -c <chipname> option. +</pre> + <p> + This is just to test that it's working. In my case, I had to define which chip to use, like so (in your case + it may be different, depending on what flash chip you have):<br/> + # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -c "MX25L6405(D)"</b> + </p> + <p> + At this point, you need to create a copy of the original lenovo firmware that is currently flashed. + This is so that you can extract the gbe (gigabit ethernet) and flash descriptor regions for use in libreboot. <b>These + are not blobs, they only contain non-functional data (configuration details, fully readable) which is fully documented in public datasheets.</b> + The descriptor will need to be modified + to disable the ME (also disable AMT) so that you can flash a ROM that excludes it. + </p> + <p> + How to backup factory.rom (change the -c option as neeed, for your flash chip):<br/> + # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -c "MX25L6405(D)" -r factory.rom</b><br/> + # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -c "MX25L6405(D)" -r factory1.rom</b><br/> + # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -c "MX25L6405(D)" -r factory2.rom</b><br/> + Now compare the 3 images:<br/> + # <b>sha512sum factory*.rom</b><br/> + If the hashes match, then just copy one of them (the factory.rom) to a safe place (on a drive connected to another machine, not + the BBB). You will need it later for part of the deblobbing. + </p> + <p> + Information about the descriptor, gbe regions and how the ME was removed can be found in the notes linked at + <a href="../hcl/gm45_remove_me.html">../hcl/gm45_remove_me.html</a>. Libreboot ROM images now include + the 12KiB descriptor+gbe by default, generated using ich9gen; + <b>however, do note that the MAC address in the Gbe region is generic. Follow the instructions at + <a href="../hcl/gm45_remove_me.html#ich9gen">../hcl/gm45_remove_me.html#ich9gen</a> and do what it says to change the MAC address + inside your R400 ROM image, before flashing it.</b> + </p> + <p> + Assuming that your libreboot ROM image is properly setup (modified descriptor plus gbe region included in the ROM), + then you can flash (assuming that the filename is <b>libreboot.rom</b>) for example I had to do:<br/> + # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -c "MX25L6405(D)" -w libreboot.rom</b> + </p> + <p> + You might see errors, but if it says <b>Verifying flash... VERIFIED</b> at the end, then it's flashed and should boot. + Test it! (boot your R400) + </p> + <p> + My output when running the command above: + </p> +<pre> +flashrom v0.9.7-r1854 on Linux 3.8.13-bone47 (armv7l) +flashrom is free software, get the source code at http://www.flashrom.org +Calibrating delay loop... OK. +Found Macronix flash chip "MX25L6405(D)" (8192 kB, SPI) on linux_spi. +Reading old flash chip contents... done. +Erasing and writing flash chip... FAILED at 0x00001000! Expected=0xff, Found=0x00, failed byte count from 0x00000000-0x0000ffff: 0xd716 +ERASE FAILED! +Reading current flash chip contents... done. Looking for another erase function. +Erase/write done. +Verifying flash... VERIFIED. +</pre> + + <p> + <a href="#pagetop">Back to top of page.</a> + </p> + + </div> + + <div class="section"> + + <p> + Copyright © 2014, 2015 Francis Rowe <info@gluglug.org.uk><br/> + 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 <a href="../license.txt">../license.txt</a>. + </p> + + <p> + 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 <a href="../license.txt">../license.txt</a> for more information. + </p> + + </div> + +</body> +</html> |