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| author | Francis Rowe <info@gluglug.org.uk> | 2015-11-06 22:43:29 +0000 |
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| committer | Francis Rowe <info@gluglug.org.uk> | 2015-11-07 04:45:09 +0000 |
| commit | 95259e28ef047923258434898113d70c8e544eab (patch) | |
| tree | 1c0501bf4c7df1c31948184dabfc1e7c4c215a6e /docs/hcl/x200.html | |
| parent | 707f9383a8189b0054730134340f20709f56f976 (diff) | |
| download | librebootfr-95259e28ef047923258434898113d70c8e544eab.tar.gz librebootfr-95259e28ef047923258434898113d70c8e544eab.zip | |
convert documentation to texinfo
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diff --git a/docs/hcl/x200.html b/docs/hcl/x200.html deleted file mode 100644 index a6581ae7..00000000 --- a/docs/hcl/x200.html +++ /dev/null @@ -1,383 +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 X200</title> -</head> - -<body> - - <div class="section"> - <h1 id="pagetop">ThinkPad X200</h1> - - <p> - It is believed that all X200 laptops are compatible. X200S and X200 Tablet will - also work, <a href="#x200s">depending on the configuration</a>. - </p> - <p> - It *might* be possible to put an X200 motherboard in an X201 chassis, though this is currently untested - by the libreboot project. The same may also apply between X200S and X201S; again, this is untested. - <b>It's most likely true.</b> - </p> - - <p> - There are two possible flash chip sizes for the X200: 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 X200 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/index.html#flashrom">../install/index.html#flashrom</a> - </p> - - <p> - <a href="index.html">Back to previous index</a>. - </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 X200, 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"> - - <h2 id="x200s">X200S and X200 Tablet.</h2> - - <p> - X200S and X200 Tablet have raminit issues at the time of writing - (GS45 chipset. X200 uses GM45). - </p> - - <p> - X200S and X200 Tablet are known to work, but only with certain CPU+RAM configurations. - The current stumbling block is RCOMP and SFF, mentioned in - <a href="https://www.cs.cmu.edu/~410/doc/minimal_boot.pdf">https://www.cs.cmu.edu/~410/doc/minimal_boot.pdf</a>. - </p> - <p> - The issues mostly relate to raminit (memory initialization). With an - unpatched coreboot, you get the following: <a href="text/x200s/cblog00.txt">text/x200s/cblog00.txt</a>. - No SODIMM combination that was tested would work. At first glance, it looks - like GS45 (chipset that X200S uses. X200 uses GM45) is unsupported, but - there is a workaround that can be used to make certain models of the X200S - work, depending on the RAM. - </p> - <p> - The datasheet for GS45 describes two modes: low-performance and - high-performance. Low performance uses the SU range of ultra-low - voltage procesors (SU9400, for example), and high-performance uses the - SL range of processors (SL9400, for example). According to datasheets, - GS45 behaves very similarly to GM45 when operating in high-performance - mode. - </p> - <p> - The theory then was that you could simply remove - the checks in coreboot and make it pass GS45 off as GM45; the idea is - that, with a high-performance mode CPU (SL9400, for example) it would - just boot up and work. - </p> - <p> - This suspicion was confirmed with the following log: - <a href="text/x200s/cblog01.txt">text/x200s/cblog01.txt</a>. - The memory modules in this case are 2x4GB. <s><b>However, not all - configurations work: <a href="text/x200s/cblog02.txt">text/x200s/cblog02.txt</a> (2x2GB) - and <a href="text/x200s/cblog03.txt">text/x200s/cblog03.txt</a> (1x2GB) - show a failed bootup.</b></s> <i>False alarm. The modules were mixed (non-matching). X200S - with high-performance mode CPU will work so long as you use matching memory modules - (doesn't matter what size).</i> - </p> - <p> - This was then pushed as a patch for coreboot, which can be found at - <a href="http://review.coreboot.org/#/c/7786/">http://review.coreboot.org/#/c/7786/</a> - (libreboot merges this patch in coreboot-libre now. Check the 'getcb' script in - src or git). - </p> - - <div class="subsection"> - <h3 id="x200s_raminit">Proper GS45 raminit</h3> - <p> - A new northbridge gs45 should be added to coreboot, based on gm45, - and a new port x200st (X200S and X200T) should be added based on - the x200 port. - </p> - <p> - This port would have proper raminit. Alternatively, gs45 (if - raminit is taken to be the only issue with it) can be part of - gm45 northbridge support (and X200S/Tablet being part of the X200 - port) with conditional checks in the raminit that make raminit - work differently (as required) for GS45. nico_h and pgeorgi/patrickg - in the coreboot IRC channel should know more about raminit on gm45 - and likely gs45. - </p> - <p> - pgeorgi recommends to run SerialICE on the factory BIOS (for X200S), - comparing it with X200 (factory BIOS) and X200 (gm45 raminit code - in coreboot), to see what the differences are. Then tweak raminit - code based on that. - </p> - </div> - - </div> - - <div class="section"> - - <h2>Trouble undocking (button doesn't work)</h2> - - <p> - This person seems to have a workaround: - <a href="https://github.com/the-unconventional/libreboot-undock">https://github.com/the-unconventional/libreboot-undock</a> - </p> - - </div> - - <div class="section"> - - <h2 id="lcd_supported_list">LCD compatibility list</h2> - - <p> - LCD panel list (X200 panels listed there): - <a href="http://www.thinkwiki.org/wiki/TFT_display">http://www.thinkwiki.org/wiki/TFT_display</a> - </p> - - <p> - All LCD panels for the X200, X200S and X200 Tablet are known to work. - </p> - - <p> - <a href="#pagetop">Back to top of page.</a> - </p> - - <div class="subsection"> - <h3 id="ips"> - AFFS/IPS panels - </h3> - <h4>X200</h4> - <p> - Adapted from <a href="https://github.com/bibanon/Coreboot-ThinkPads/wiki/ThinkPad-X200">https://github.com/bibanon/Coreboot-ThinkPads/wiki/ThinkPad-X200</a> - </p> - <p> - Look at wikipedia for difference between TN and IPS panels. IPS have much better colour/contrast than - a regular TN, and will typically have good viewing angles. - </p> - <p> - These seem to be from the X200 tablet. You need to find one without the glass touchscreen protection on it - (might be able to remove it, though). It also must not have a digitizer on it (again, might be possible to - just simply remove the digitizer). - </p> - <ul> - <li>BOE-Hydis HV121WX4-120, HV121WX4-110 or HV121WX4-100 - cheap-ish, might be hard to find</li> - <li>Samsung LTN121AP02-001 - common to find, cheap</li> - </ul> - <p> - <b>If your X200 has an LED backlit panel in it, then you also need to get an inverter and harness cable - that is compatible with the CCFL panels. To see which panel type you have, see - <a href="#led_howtotell">#led_howtotell</a>. If you need the inverter/cable, here are part numbers: - 44C9909 for CCFL LVDS cable with bluetooth and camera connections, and 42W8009 or 42W8010 for the - inverter.</b> - </p> - <p> - There are glossy and matte versions of these. Matte means anti-glare, which is what you want (in this authors opinion). - </p> - <p> - Refer to the HMM (hardware maintenance manual) for how to replace the screen. - </p> - <p>Sources:</p> - <ul> - <li><a href="http://forum.thinkpads.com/viewtopic.php?f=2&t=84941">ThinkPad Forums - Matte AFFS Panel on X200</a></li> - <li><a href="http://forum.thinkpads.com/viewtopic.php?p=660662#p660662">ThinkPad Forums - Parts for X200 AFFS Mod</a></li> - <li><a href="http://thinkwiki.de/X200_Displayumbau">ThinkWiki.de - X200 Displayumbau</a> (achtung: du musst lesen und/oder spreche deutsch; - oder ein freund fur hilfe)</li> - </ul> - </div> - <div class="subsection"> - <h3>X200S</h3> - <p> - <a href="http://forum.thinkpads.com/viewtopic.php?p=618928#p618928">http://forum.thinkpads.com/viewtopic.php?p=618928#p618928</a> - explains that the X200S screens/assemblies are thinner. You need to replace the whole lid with one from a normal X200/X201. - </p> - </div> - - <p> - <a href="#pagetop">Back to top of page.</a> - </p> - - </div> - - <div class="section"> - <h2 id="led_howtotell">How to tell if it has an LED or CCFL?</h2> - - <p> - Some X200s have a CCFL backlight and some have an LED backlight, in their LCD panel. This - also means that the inverters will vary, so you must be careful if ever replacing either - the panel and/or inverter. (a CCFL inverter is high-voltage and will destroy an LED backlit panel). - </p> - <p> - CCFLs contain mercury. An X200 with a CCFL backlight will (<b></b>unless it has been changed to an LED, - with the correct inverter. Check with your supplier!</b>) the following: <i>"This product - contains Lithium Ion Battery, Lithium Battery and a lamp which contains mercury; dispose according to - local, state or federal laws"</i> (one with an LED backlit panel will say something different). - </p> - <p> - <a href="#pagetop">Back to top of page.</a> - </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 X200: - </p> - - <ul> - <li> - BIOS 3.15, EC 1.06 - <ul> - <li><a href="hwdumps/x200/">hwdumps/x200/</a></li> - </ul> - </li> - </ul> - - </div> - - <div class="section"> - - <h1 id="ram_s3_microcode">RAM, S3 and microcode updates</h1> - - <p> - Not all memory modules work. Most of the default ones do, but you have to be careful - when upgrading to 8GiB; some modules work, some don't. - </p> - - <p> - pehjota started collecting some steppings for different CPUs on several X200 laptops. - You can get the CPUID by running: <br/> - $ <b>dmesg | sed -n 's/^.* microcode: CPU0 sig=0x\([^,]*\),.*$/\1/p'</b> - </p> - - <p> - What pehjota wrote: - The laptops that have issues resuming from suspend, as well as a laptop that (as I mentioned earlier in #libreboot) won't boot with any Samsung DIMMs, all have CPUID 0x10676 (stepping M0). - </p> - - <p> - What pehjota wrote: - Laptops with CPUID 0x167A (stepping R0) resume properly every time and work with Samsung DIMMs. I'll - need to do more testing on more units to better confirm these trends, but it looks like the M0 microcode - is very buggy. That would also explain why I didn't have issues with Samsung DIMMs with the Lenovo BIOS - (which would have microcode updates). I wonder if VT-x works on R0. - </p> - - <p> - What pehjota wrote: - As I said, 10676 is M0 and 1067A is R0; those are the two CPUIDs and steppings for Intel Core 2 Duo P8xxx CPUs with factory microcode. (1067 is the family and model, and 6 or A is the stepping ID.) - </p> - - <p> - <b> - TODO: check the CPUIDs and test S3 resume and/or KVM on any C2D systems (including non-P8xxx ones, which I don't have here) you have available. I'd be curious if you could confirm these results. - </b> - It might not be coreboot that's buggy with raminit/S3; it might just be down to the microcode updates. - </p> - - </div> - - <div class="section"> - - <h2 id="unsorted">Unsorted notes</h2> - -<pre> -<sgsit> do you know if it's possible to flash thinkpads over the LPC debug connector at the front edge? -<sgsit> that would make life much easier for systems like this -<sgsit> all the Wistron manufactured systems have this thing called a "golden finger", normally at the front edge of the board -<sgsit> you can plug a board in which gives diagnostic codes but i'm wondering whether it is capable of more -<sgsit> <a href="http://www.endeer.cz/bios.tools/bios.html">http://www.endeer.cz/bios.tools/bios.html</a> -</pre> - - </div> - - <div class="section"> - - <p> - Copyright © 2014, 2015 Francis Rowe <info@gluglug.org.uk><br/> - Copyright © 2015 Patrick "P. J." McDermott <pj@pehjota.net><br/> - 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 <a href="../gfdl-1.3.txt">../gfdl-1.3.txt</a> - </p> - - <p> - Updated versions of the license (when available) can be found at - <a href="https://www.gnu.org/licenses/licenses.html">https://www.gnu.org/licenses/licenses.html</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. 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