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diff --git a/docs/hcl/t500.html b/docs/hcl/t500.html new file mode 100644 index 00000000..186a25d8 --- /dev/null +++ b/docs/hcl/t500.html @@ -0,0 +1,191 @@ +<!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/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 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"> + + <h1 id="lcd_compatibility">LCD compatibly</h1> + <p> + Not all LCD panels are compatible yet. See <a href="gm45_lcd.html">gm45_lcd.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 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. 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> |