Date: Fri, 06 Nov 2015 17:43:29 -0500 Subject: convert documentation to texinfo --- (limited to 'docs/hcl/r500.html') diff --git a/docs/hcl/r500.html b/docs/hcl/r500.html deleted file mode 100644 index 434aac7..0000000 --- a/docs/hcl/r500.html +++ /dev/null @@ -1,299 +0,0 @@ - - - - - - - - - ThinkPad R500 - - - - -

ThinkPad R500

- -

- It is believed that all or most R500 laptops are compatible. - See notes about CPU compatibility for - potential incompatibilities. -

- -

- There are two possible flash chip sizes for the R500: 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. - - NOTE: this paragraph is being treated with contempt. When an R500 was disassembled, it didn't look - like there was an extra place for SOIC-16. It's highly likely that these laptops only have SOIC-8 (4MiB) - flash chips. For now, libreboot will distribute 8MiB images just in case. If it is found later on - that no 8MiB (SOIC-16) chips exist on the R500, then libreboot will cease to distribute 8MiB ROM images - for this laptop. It is only said that the R500 has 4MiB or 8MiB, for now, since this is the case - on other GM45 thinkpads that are supported in libreboot. - -

- -

- 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 (contains notes, plus - instructions) -

- -

- Flashing instructions can be found at ../install/index.html#flashrom -

- -

- - NOTE: This board is unsupported in libreboot 20150518. To use it in libreboot, for now, - you must build for it from source using the libreboot git repository. - -

- -

- Back to previous index. -

- -

Compatibility (without blobs)

- -

Hardware virtualization (vt-x)

- 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: - http://download.intel.com/design/mobile/specupdt/320121.pdf -

- -

LCD compatibly

- Not all LCD panels are known to be compatible yet. See gm45_lcd.html. -

- -

- The R500 is almost identical to the X200, code-wise, but there are some hardware differences. See x200.html. -

- -

Hardware register dumps

- -

- The coreboot wiki shows - how to collect various logs useful in porting to new - boards. Following are outputs from the R500: -

- -

- Lenovo BIOS 3.13 (EC firmware 1.06): -
- hwdumps/r500/
-

- -

Issues

- False report of overheating, automatic shut down -

- When attempting to boot Trisquel 7 live USB (GNOME), the following error appears and then - the system abruptly shuts down: - thermal thermal_zone1: critical temperature reached(120 C),shutting down. -

- This is false. When booting with acpi=off, xsensors shows no overheating during a stress test. - The system does not feel hot, nor does anything smell like it's burning. -

- This is most likely caused by an ACPI bug in coreboot, which will have to be investigated. Grep for those things, - comparing factory/libreboot (iasl -d or acpidump): -

- Return (C2K(\_SB.PCI0.LPCB.EC.TMP0))
-TMP0, 8,        /* Thermal Zone 0 temperature */
-

Cardbus slot didn't work when tested

- Investigate. -

- -

Descriptor differences

- -

- The ich9gen and ich9deblob utilities were modified, - to reflect these differences. -

- -

Component 1 Density

- -

--    descriptorStruct.componentSection.flcomp.component1Density = 0x4;
-+    descriptorStruct.componentSection.flcomp.component1Density = 0x3;
-

- -

- Read page 848 in the ICH9 datasheet, linked to from gm45_remove_me.html#flash_descriptor_region. - This doesn't break anything, but in the process of debugging descriptor differences on the R500, it was found that this - config option isn't being modified in libreboot, for different size ROM images. 4MiB ROM images still contain 0x4 for component1Density. - Per datasheets, 0x4 (100) is 8MiB, and 0x3 (011) is 4MiB. This should be fixed! -

- It was 0x3 for this test, because the R500 that was used to create this report - had a 4MiB SOIC-8 flash chip. -

- -

flReg1.LIMIT

- -

--    /* descriptorStruct.regionSection.flReg1.LIMIT = 0x07ff; */
-+    /* descriptorStruct.regionSection.flReg1.LIMIT = 0x03ff; */
-

- -

- Ignore this. This is not used at all, and is instead automatically set, depending on - the targetted ROM image size, both in ich9gen and ich9deblob. 0x7ff means 8MiB, and 0x3ff means - 4MiB. flReg1 is for the BIOS region. Simply speaking, this is defining the final 4KiB section - of the ROM image, where the BIOS region ends. -

- It was 0x3ff for this test, because the R500 that was used to create this report - had a 4MiB SOIC-8 flash chip. -

- -

Onboard gigabit ethernet NIC is disabled

- -

--    descriptorStruct.ichStraps.ichStrap0.integratedGbe = 0x1;
--    descriptorStruct.ichStraps.ichStrap0.lanPhy = 0x1;
-+    descriptorStruct.ichStraps.ichStrap0.integratedGbe = 0x0;
-+    descriptorStruct.ichStraps.ichStrap0.lanPhy = 0x0;
-

- -

- Most GM45 laptops (e.g. X200, T400, T500, R400) have the Intel 82567LM - integrated gigabit NIC. -

- On the R500, a Broadcom BCM5787M NIC is present. To make this work, - the change above must be made for the R500 descriptor. -

- -

No Gbe region!

- -

- Not shown in the diffs above: -

- -

-Original: Descriptor start block: 00000000 ; Descriptor end block: 00000000
-Original: BIOS start block: 00200000 ; BIOS end block: 003ff000
-Original: ME start block: 00001000 ; ME end block: 001f7000
-Original: GBe start block: 00fff000 ; GBe end block: 00000000
-Original: Platform start block: 001f8000 ; Platform end block: 001ff000
-

- -

- As explained above, this laptop uses a Broadcom NIC, which means that - the Gbe region does not and should not exist, since this is for the - Intel NIC only. -

- In the output above, Gbe starts at fff and ends at 000. Base 1FFF or FFF, and limit 0, - means that the region is disabled. -

- In the output above, the ME region is 4KiB larger than on other GM45 systems that have - a Gbe region. This accounts for the lack of a Gbe region. -

- -

- As part of this effort, ich9gen/ich9deblob/demefactory will all be - modified to account for the differences above. -

- -

- Copyright © 2015 Francis Rowe <info@gluglug.org.uk>
- 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 ../gfdl-1.3.txt -

- -

- Updated versions of the license (when available) can be found at - https://www.gnu.org/licenses/licenses.html -

- -

- 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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