From dbc480fb28a694ad5a587be025eabfded7c7784b Mon Sep 17 00:00:00 2001 From: Alyssa Rosenzweig Date: Fri, 17 Mar 2017 22:24:25 -0700 Subject: Convert documentation to markdown --- docs/hcl/r400.md | 121 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 docs/hcl/r400.md (limited to 'docs/hcl/r400.md') diff --git a/docs/hcl/r400.md b/docs/hcl/r400.md new file mode 100644 index 00000000..51afdfdc --- /dev/null +++ b/docs/hcl/r400.md @@ -0,0 +1,121 @@ +
+ +ThinkPad R400 {#pagetop} +============= + +It is believed that all or most R400 laptops are compatible. See notes +about [CPU +compatibility](../install/r400_external.html#cpu_compatibility) for +potential incompatibilities. + +There are two possible flash chip sizes for the R400: 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. + +**The R400 laptops come with the ME (and sometimes AMT in addition) +before flashing libreboot. Libreboot disables and removes it by using a +modified descriptor: see [gm45\_remove\_me.html](gm45_remove_me.html)** +(contains notes, plus instructions) + +Flashing instructions can be found at +[../install/\#flashrom](../install/#flashrom) + +[Back to previous index](./). + +
+ +
+ +EC update {#ecupdate} +========= + +It is recommended that you update to the latest EC firmware version. The +[EC firmware](https://libreboot.org/faq/#firmware-ec) 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: + +- +- + +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. + +Updated EC firmware has several advantages e.g. bettery battery +handling. + +
+ +
+ +Compatibility (without blobs) {#compatibility_noblobs} +----------------------------- + +
+ +### Hardware virtualization (vt-x) {#hwvirt} + +The R400, 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). + +On GM45 hardware (with libreboot), make sure that the *kvm* and +*kvm\_intel* kernel modules are not loaded, when using QEMU. + +The following errata datasheet from Intel might help with investigation: + + +
+ +
+ +
+ +The R400 is almost identical to the X200, code-wise. See +[x200.html](x200.html). + +TODO: put hardware register logs here like on the [X200](x200.html) and +[T400](t400.html) page. + +
+ +
+ +Copyright © 2014, 2015 Leah Rowe <info@minifree.org>\ +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 +[../cc-by-sa-4.0.txt](../cc-by-sa-4.0.txt) + +Updated versions of the license (when available) can be found at + + +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. + +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. + +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. + +
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