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-84,10 +84,34 @@ </p> </div> + + <div class="section photos"> + + <h1 id="macaddress">MAC address</h1> - <div class="section"> + <p> + On the R400, the MAC address for the onboard + gigabit ethernet chipset is stored inside the flash chip, + along with other configuration data. + </p> + <p> + Keep a note of the MAC address before disassembly; this is + very important, because you will need to insert this into + the libreboot ROM image before flashing it. + It will be written in one of these locations: + </p> + + <p> + <img src="images/t400/macaddress0.jpg" alt="" /> + <img src="images/t400/macaddress1.jpg" alt="" /> + <img src="images/x200/disassembly/0001.jpg" alt="" /> + </p> + + </div> + + <div class="section photos"> - <h1>Initial BBB setup</h1> + <h1>Initial BBB configuration</h1> <p> Refer to <a href="bbb_setup.html">bbb_setup.html</a> for how to @@ -124,29 +148,186 @@ POMONA 5250 (correlate with the BBB guide) === slot where the AC jack is connected === </pre> - <h2> - Connect Pomona 5252/5250 to the R400 flash chip, and dump/flash - </h2> + <h2 id="disassembly">Disassembly</h2> + + <p> + Remove all screws:<br/> + <img src="images/r400/0000.jpg" alt="" /><br/> + Remove the HDD and optical drive:<br/> + <img src="images/r400/0001.jpg" alt="" /><br/> + Remove the hinge screws:<br/> + <img src="images/r400/0002.jpg" alt="" /> + <img src="images/r400/0003.jpg" alt="" /> + </p> + + <p> + Remove the palm rest and keyboard:<br/> + <img src="images/r400/0004.jpg" alt="" /> + <img src="images/r400/0005.jpg" alt="" /> + </p> + + <p> + Remove these screws, and then remove the bezel:<br/> + <img src="images/r400/0006.jpg" alt="" /> + <img src="images/r400/0007.jpg" alt="" /> + </p> + + <p> + Remove the speaker screws, but don't remove the speakers yet + (just set them loose):<br/> + <img src="images/r400/0008.jpg" alt="" /> + <img src="images/r400/0009.jpg" alt="" /> + <img src="images/r400/0010.jpg" alt="" /> + </p> + + <p> + Remove these screws, and then remove the metal plate:<br/> + <img src="images/r400/0011.jpg" alt="" /> + <img src="images/r400/0012.jpg" alt="" /> + <img src="images/r400/0013.jpg" alt="" /> + </p> + + <p> + Remove the antennas from the wifi card, and then + start unrouting them:<br/> + <img src="images/r400/0014.jpg" alt="" /> + <img src="images/r400/0015.jpg" alt="" /> + <img src="images/r400/0016.jpg" alt="" /> + <img src="images/r400/0017.jpg" alt="" /> + <img src="images/r400/0018.jpg" alt="" /> + <img src="images/r400/0019.jpg" alt="" /> + </p> + + <p> + Disconnect the LCD cable from the motherboard:<br/> + <img src="images/r400/0020.jpg" alt="" /> + <img src="images/r400/0021.jpg" alt="" /> + <img src="images/r400/0022.jpg" alt="" /> + <img src="images/r400/0023.jpg" alt="" /> + </p> + + <p> + Remove the hinge screws, and then remove the LCD panel:<br/> + <img src="images/r400/0024.jpg" alt="" /> + <img src="images/r400/0025.jpg" alt="" /> + <img src="images/r400/0026.jpg" alt="" /> + <img src="images/r400/0027.jpg" alt="" /> + </p> + + <p> + Remove this:<br/> + <img src="images/r400/0028.jpg" alt="" /> + <img src="images/r400/0029.jpg" alt="" /> + </p> + + <p> + Remove this long cable (there are 3 connections):<br/> + <img src="images/r400/0030.jpg" alt="" /> + <img src="images/r400/0031.jpg" alt="" /> + <img src="images/r400/0032.jpg" alt="" /> + <img src="images/r400/0033.jpg" alt="" /> + </p> + + <p> + Disconnect the speaker cable, and remove the speakers:<br/> + <img src="images/r400/0034.jpg" alt="" /> + </p> + + <p> + Remove the heatsink screws, remove the fan + and then remove the heatsink/fan:<br/> + <img src="images/r400/0035.jpg" alt="" /> + <img src="images/r400/0036.jpg" alt="" /> + <img src="images/r400/0037.jpg" alt="" /> + <img src="images/r400/0038.jpg" alt="" /> + </p> + + <p> + Remove the NVRAM battery:<br/> + <img src="images/r400/0039.jpg" alt="" /> + <img src="images/r400/0040.jpg" alt="" /> + </p> + <p> - The following photo shows an R400 flashed using the BBB:<br/> - <img src="images/r400/r400_pomona.jpg" alt="" /> + Remove this screw:<br/> + <img src="images/r400/0041.jpg" alt="" /> + <img src="images/r400/0042.jpg" alt="" /> </p> + + <p> + Disconnect the AC jack:<br/> + <img src="images/r400/0043.jpg" alt="" /> + <img src="images/r400/0044.jpg" alt="" /> + </p> + + <p> + Remove this screw and then remove what is under it:<br/> + <img src="images/r400/0045.jpg" alt="" /> + </p> + + <p> + Remove this:<br/> + <img src="images/r400/0046.jpg" alt="" /> + </p> + + <p> + Lift the motherboard (which is still inside the cage) + from the side on the right, removing it completely:<br/> + <img src="images/r400/0047.jpg" alt="" /> + <img src="images/r400/0048.jpg" alt="" /> + </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. + Remove all screws, marking each hole so that you know + where to re-insert them. You should place the screws in + a layout corresponding to the order that they were in + before removal: + <img src="images/r400/0049.jpg" alt="" /> + <img src="images/r400/0050.jpg" alt="" /> </p> + + <p> + Remove the motherboard from the cage, and the SPI flash + chip will be next to the memory slots:<br/> + <img src="images/r400/0051.jpg" alt="" /> + <img src="images/r400/0052.jpg" alt="" /> + </p> + + <p> + Connect your programmer, then connect GND and 3.3V<br/> + <img src="images/t400/0065.jpg" alt="" /> + <img src="images/t400/0066.jpg" alt="" /> + <img src="images/t400/0067.jpg" alt="" /> + <img src="images/t400/0069.jpg" alt="" /> + <img src="images/t400/0070.jpg" alt="" /> + <img src="images/t400/0071.jpg" alt="" /> + </p> + <p> + A dedicated 3.3V PSU was used to create this guide, but + at ATX PSU is also fine:<br/> + <img src="images/t400/0072.jpg" alt="" /> + </p> + + <p> + Of course, make sure to turn on your PSU:<br/> + <img src="images/x200/disassembly/0013.jpg" alt="" /> + </p> + + <p> + Now, you should be ready to install libreboot. + </p> + <p> Flashrom binaries for ARM (tested on a BBB) are distributed in libreboot_util. Alternatively, libreboot also distributes flashrom source code which can be built. </p> <p> - I did (SSH'd into the BBB):<br/> + Log in as root on your BBB, using the instructions in <a href="bbb_setup.html#bbb_access">bbb_setup.html#bbb_access</a>. + </p> + <p> + Test that flashrom works:<br/> # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512</b><br/> - In my case, the output was: + In this case, the output was: </p> <pre> flashrom v0.9.7-r1854 on Linux 3.8.13-bone47 (armv7l) @@ -159,46 +340,38 @@ Multiple flash chip definitions match the detected chip(s): "MX25L6405(D)&q 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/> + # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -r factory.rom</b><br/> + # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -r factory1.rom</b><br/> + # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -r factory2.rom</b><br/> + Note: the <b>-c</b> option is not required in libreboot's patched flashrom, because + the redundant flash chip definitions in <i>flashchips.c</i> have been removed.<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. + the BBB). This is useful for reverse engineering work, if there is a desirable behaviour in the original firmware + that could be replicated in coreboot and libreboot. + </p> + <p> + Follow the instructions at <a href="../hcl/gm45_remove_me.html#ich9gen">../hcl/gm45_remove_me.html#ich9gen</a> + to change the MAC address inside the libreboot ROM image, before flashing it. + Although there is a default MAC address inside the ROM image, this is not what you want. <b>Make sure + to always change the MAC address to one that is correct for your system.</b> </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> + Now flash it:<br/> + # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -w path/to/libreboot/rom/image.rom -V</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> + <img src="images/x200/disassembly/0015.jpg" alt="" /> </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) + If you see errors, try again (and again, and again); the message <b>Chip content is identical to the requested image</b> + is also an indication of a successful installation. </p> <p> - My output when running the command above: + Example output from running the command (see above): </p> <pre> flashrom v0.9.7-r1854 on Linux 3.8.13-bone47 (armv7l) @@ -212,6 +385,7 @@ 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> @@ -244,14 +418,14 @@ Verifying flash... VERIFIED. <h1 id="wifi">Wifi</h1> <p> - The T400 typically comes with an Intel wifi chipset, which does not + The R400 typically comes with an Intel wifi chipset, which does not work without proprietary software. For a list of wifi chipsets that work without proprietary software, see <a href="../hcl/index.html#recommended_wifi">../hcl/index.html#recommended_wifi</a>. </p> <p> - Some T400 laptops might come with an Atheros chipset, but this is 802.11g only. + Some R400 laptops might come with an Atheros chipset, but this is 802.11g only. </p> <p> @@ -263,7 +437,7 @@ Verifying flash... VERIFIED. <p> The following photos show an Atheros AR5B95 being installed, to - replace the Intel chip that this T400 came with:<br/> + replace the Intel chip that this R400 came with:<br/> <img src="images/t400/0012.jpg" alt="" /> <img src="images/t400/ar5b95.jpg" alt="" /> </p> @@ -286,6 +460,25 @@ Verifying flash... VERIFIED. </p> </div> + + <div class="section photos"> + + <h2> + Boot it! + </h2> + <p> + You should see something like this: + </p> + <p> + <img src="images/t400/boot0.jpg" alt="" /> + <img src="images/t400/boot1.jpg" alt="" /> + </p> + + <p> + Now <a href="../gnulinux/index.html">install GNU/Linux</a>. + </p> + + </div> <div class="section"> |
