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| author | Alyssa Rosenzweig <alyssa@rosenzweig.io> | 2017-03-17 22:24:25 -0700 |
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| committer | Alyssa Rosenzweig <alyssa@rosenzweig.io> | 2017-03-17 22:24:25 -0700 |
| commit | dbc480fb28a694ad5a587be025eabfded7c7784b (patch) | |
| tree | 16b4251dcbdede274781f7bb8b1f23570853f3bb /docs/hcl/t500.html | |
| parent | 85ec6862e8af0747420ca15fef7100edb5885302 (diff) | |
| download | librebootfr-dbc480fb28a694ad5a587be025eabfded7c7784b.tar.gz librebootfr-dbc480fb28a694ad5a587be025eabfded7c7784b.zip | |
Convert documentation to markdown
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| -rw-r--r-- | docs/hcl/t500.html | 209 |
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diff --git a/docs/hcl/t500.html b/docs/hcl/t500.html deleted file mode 100644 index b8d451eb..00000000 --- a/docs/hcl/t500.html +++ /dev/null @@ -1,209 +0,0 @@ -<!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 T500</title> -</head> - -<body> - - <div class="section"> - <h1 id="pagetop">ThinkPad T500</h1> - - <p> - It is believed that all or most T500 laptops are compatible. - See notes about <a href="../install/t500_external.html#cpu_compatibility">CPU compatibility</a> - for potential incompatibilities. - </p> - - <p> - There are two possible flash chip sizes for the T500: 4MiB (32Mbit) or 8MiB (64Mbit). - This can be identified by the type of flash chip below the palmrest: 4MiB is SOIC-8, 8MiB - is SOIC-16. - </p> - - <p> - <b>The T500 laptops come with the ME (and sometimes AMT in addition) before flashing libreboot. Libreboot disables and removes it - by using a modified descriptor: see <a href="gm45_remove_me.html">gm45_remove_me.html</a></b> (contains notes, plus - instructions) - </p> - - <p> - Flashing instructions can be found at <a href="../install/#flashrom">../install/#flashrom</a> - </p> - - <p> - <a href="./">Back to previous index</a>. - </p> - </div> - - <div class="section"> - - <h1 id="ecupdate">EC update</h1> - - <p> - It is recommended that you update to the latest EC firmware version. - The <a href="https://libreboot.org/faq/#firmware-ec">EC firmware</a> - is separate from libreboot, so we don't actually provide that, but - if you still have Lenovo BIOS then you can just run the Lenovo BIOS - update utility, which will update both the BIOS and EC version. - See: - </p> - <ul> - <li><a href="https://libreboot.org/docs/install/index.html#flashrom">https://libreboot.org/docs/install/index.html#flashrom</a></li> - <li><a href="http://www.thinkwiki.org/wiki/BIOS_update_without_optical_disk">http://www.thinkwiki.org/wiki/BIOS_update_without_optical_disk</a></li> - </ul> - <p> - NOTE: this can only be done when you are using Lenovo BIOS. How to - update the EC firmware while running libreboot is unknown. - Libreboot only replaces the BIOS firmware, not EC. - </p> - <p> - Updated EC firmware has several advantages e.g. - bettery battery handling. - </p> - - </div> - <div class="section"> - - <h2 id="compatibility_noblobs">Compatibility (without blobs)</h2> - - <div class="subsection"> - <h3 id="hwvirt">Hardware virtualization (vt-x)</h3> - <p> - The T500, when run without CPU microcode updates in coreboot, currently kernel panics - if running QEMU with vt-x enabled on 2 cores for the guest. With a single core enabled - for the guest, the guest panics (but the host is fine). Working around this in QEMU - might be possible; if not, software virtualization should work fine (it's just slower). - </p> - <p> - On GM45 hardware (with libreboot), make sure that the <i>kvm</i> and <i>kvm_intel</i> kernel modules - are not loaded, when using QEMU. - </p> - <p> - The following errata datasheet from Intel might help with investigation: - <a href="http://download.intel.com/design/mobile/specupdt/320121.pdf">http://download.intel.com/design/mobile/specupdt/320121.pdf</a> - </p> - </div> - - </div> - - <div class="section"> - - <p> - The T500 is almost identical to the X200, code-wise. See <a href="x200.html">x200.html</a>. - </p> - - </div> - - <div class="section"> - - <h2 id="descriptor_difference"> - Descriptor and Gbe differences - </h2> - - <p> - See - <a href="../future/dumps/t500_x200_descriptor/descriptor_diff_t500_x200.txt">../future/dumps/t500_x200_descriptor/descriptor_diff_t500_x200.txt</a> - and - <a href="../future/dumps/t500_x200_descriptor/gbe_diff_t500_x200.txt">../future/dumps/t500_x200_descriptor/gbe_diff_t500_x200.txt</a> - </p> - - <p> - The patches above are based on the output from ich9deblob on a factory.rom image dumped from the T500 - with a SOIC-8 4MiB flash chip. The patch re-creates the X200 descriptor/gbe source, so the commands were - something like:<br/> - $ <b>diff -u t500gbe x200gbe</b><br/> - $ <b>diff -u t500descriptor x200descriptor</b> - </p> - - <p> - ME VSCC table is in a different place and a different size on the T500. Libreboot disables and removes the ME - anyway, so it doesn't matter. - </p> - - <p> - The very same descriptor/gbe used on the X200 (generated by <a href="gm45_remove_me.html#ich9gen">ich9gen</a>) - was re-used on the T500, and it still worked. - </p> - - </div> - - <div class="section"> - - <h2 id="regdumps">Hardware register dumps</h2> - - <p> - The coreboot wiki <a href="http://www.coreboot.org/Motherboard_Porting_Guide">shows</a> - how to collect various logs useful in porting to new - boards. Following are outputs from the T500: - </p> - - <ul> - <li> - T500 with <b>Macronix MX25L3205D</b> flash chip (4MiB, SOIC-8) - and Lenovo BIOS 3.13 7VET83WW (EC firmware 1.06): - <ul> - <li><a href="../future/dumps/t500log/">../future/dumps/t500log/</a></li> - </ul> - </li> - </ul> - - </div> - - <div class="section"> - - <p> - Copyright © 2015 Leah Rowe <info@minifree.org><br/> - Permission is granted to copy, distribute and/or modify this document - under the terms of the Creative Commons Attribution-ShareAlike 4.0 International license - or any later version published by Creative Commons; - - A copy of the license can be found at <a href="../cc-by-sa-4.0.txt">../cc-by-sa-4.0.txt</a> - </p> - - <p> - Updated versions of the license (when available) can be found at - <a href="https://creativecommons.org/licenses/by-sa/4.0/legalcode">https://creativecommons.org/licenses/by-sa/4.0/legalcode</a> - </p> - - <p> - 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. - </p> - <p> - 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. - </p> - <p> - 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. - </p> - - </div> - -</body> -</html> |