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diff --git a/docs/hcl/x200.html b/docs/hcl/x200.html index e7dbc29..18a1cf8 100644 --- a/docs/hcl/x200.html +++ b/docs/hcl/x200.html @@ -15,20 +15,16 @@ <h1 id="pagetop">ThinkPad X200</h1> <p> - This sections relates to known hardware compatibility in libreboot. - </p> - <p> Or <a href="index.html">back to main index</a>. </p> <p> - It is believed that all X200 laptops are compatible. X200s and X200t may also work, - but require soldering (for the initial installation/flashing of a ROM image, or - dumping the current firmware). <b>Only the X200 is tested so far.</b> + 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. + 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> @@ -39,17 +35,135 @@ </p> <p> - <b>The X200 laptops come with ME (and sometimes AMT) before flashing libreboot. Libreboot disables and removes it + <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="x200_remove_me.html">x200_remove_me.html</a></b> (contains notes, plus instructions) </p> - + <p> Flashing instructions can be found at <a href="../install/index.html#flashrom_x200">../install/index.html#flashrom_x200</a> </p> <hr/> + <div class="section"> + + <h2 id="compatibility_noblobs">Compatibility (without blobs)</h2> + + <p> + Usual limitations apply for native graphics initialization + (no VBT and/or INT10H and only GRUB works so no BIOS, so no DOS/Windows support + - who cares? There is no system but GNU, and Linux is one of it's kernels). + </p> + + <p> + When connecting the AC adapter while system is powered off, system will then power on. + This probably happens in coreboot aswell (with or without blobs). + It's a minor annoyance, but it should be fixed (if it's not already fixed by now). + </p> + + <p> + This method of disabling the ME leaves the flash descriptor and gbe in place (non-functional data, fully documented) + and disables the ME using soft straps. This means that the gigabit ethernet will still work (putting the machine in + non-descriptor mode would wipe it out, not to mention require hardware modifications that most users will be unwilling to make). + </p> + + <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> + 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> + +<hr/> + + <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 is 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 X200 Tablet should also work, but it is not guaranteed. + </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. <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> + </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> + + <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> + +<hr/> + <h1 id="lcd_supported_list">LCD compatibility list</h1> <p> Unless otherwise noted (italic styling, underlined), these are CCFL 1280x800 screens with TN panels inside. @@ -68,21 +182,21 @@ Tested LCD panels (confirmed working): </p> <ul> - <li>X200/X200s: LG-Philips LP121WX3-TLC1 (sgsit on IRC has this panel) (LED backlight)</li> - <li>X200/X200s: Samsung LTN121AT03 (phcoder on IRC has this panel)</li> - <li>X200/X200s: AUO B121EW03 V.6 (fchmmr on IRC has this panel)</li> + <li>X200/X200S: LG-Philips LP121WX3-TLC1 (sgsit on IRC has this panel) (LED backlight)</li> + <li>X200/X200S: Samsung LTN121AT03 (phcoder on IRC has this panel)</li> + <li>X200/X200S: AUO B121EW03 V.6 (fchmmr on IRC has this panel)</li> + <li>X200S: TMD-Toshiba LTD121EQ3B (1440x900 resolution) (LED backlight) (sgsit on IRC has this panel)</li> </ul> <p> Untested LCD panels (status unknown): </p> <ul> <li>X200 Tablet: TMD-Toshiba LTD121KX6B (LED backlight)</li> - <li>X200/X200s: TMD-Toshiba LTD121EWVB</li> - <li>X200/X200s: AOU B121EW09 V.2 (LED backlight)</li> - <li>X200/X200s: FRU 42T0715 (no manufacturer/model given) (LED backlight)</li> - <li>X200/X200s: LG-Philips LP121WX3-TLA1 (LED backlight)</li> - <li>X200/X200s: 42T0713 FRU (no model/manufacturer given) (LED backlight)</li> - <li>X200s (not X200): TMD-Toshiba LTD121EQ3B (1440x900 resolution) (LED backlight)</li> + <li>X200/X200S: TMD-Toshiba LTD121EWVB</li> + <li>X200/X200S: AOU B121EW09 V.2 (LED backlight)</li> + <li>X200/X200S: FRU 42T0715 (no manufacturer/model given) (LED backlight)</li> + <li>X200/X200S: LG-Philips LP121WX3-TLA1 (LED backlight)</li> + <li>X200/X200S: 42T0713 FRU (no model/manufacturer given) (LED backlight)</li> </ul> <p> <a href="#pagetop">Back to top of page.</a> @@ -128,10 +242,10 @@ <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> - <h3>X200s</h3> + <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. + explains that the X200S screens/assemblies are thinner. You need to replace the whole lid with one from a normal X200/X201. </p> <p> @@ -159,6 +273,48 @@ <hr/> + <div class="section"> + + <h2 id="new_targets">New targets</h2> + + <p> + ThinkPad R400/R500/T400/T400S/T500/W500. These all use either the GM45 or GS45 + chipset, and should be easy-ish to port to coreboot (based on the X200 port and + the GM45 code), then adapted for use in libreboot. + </p> + + <p> + There may be issues (most likely to do with raminit) on some of them, and + some of them might sometimse come with ATI graphics (to be avoided) instead + of Intel. + </p> + + <p> + For example, the R400 currently has issues with raminit (not yet ported to coreboot) + where it's DDR3 memory reported as DDR2, as shown in + <a href="text/r400/r400_dmidecode.txt">text/r400/r400_dmidecode.txt</a> + </p> + + </div> + +<hr/> + + <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 machines like this +<sgsit> all the Wistron manufactured machines 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> + +<hr/> + <p> Copyright © 2014 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. |