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diff --git a/docs/hcl/t400.md b/docs/hcl/t400.md deleted file mode 100644 index 2ff2c836..00000000 --- a/docs/hcl/t400.md +++ /dev/null @@ -1,77 +0,0 @@ ---- -title: ThinkPad T400 -... - -It is believed that all or most T400 laptops are compatible. See notes -about [CPU -compatibility](../install/t400_external.html#cpu_compatibility) for -potential incompatibilities. - -There are two possible flash chip sizes for the T400: 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 T400 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) - -EC update {#ecupdate} -========= - -It is recommended that you update to the latest EC firmware version. The -[EC firmware](../../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: - -- [../install/index.html#flashrom](../install/index.html#flashrom) -- <http://www.thinkwiki.org/wiki/BIOS_update_without_optical_disk> - -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 T400, 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> - -The T400 is almost identical to the X200, code-wise. See -[x200.html](x200.html). - -Hardware register dumps {#regdumps} ------------------------ - -The coreboot wiki -[shows](http://www.coreboot.org/Motherboard_Porting_Guide) how to -collect various logs useful in porting to new boards. Following are -outputs from the T400: - -- T400 with **Winbond W25X64** flash chip (8MiB, SOIC-16) and Lenovo - BIOS 2.02 (EC firmware 1.01): - - [../future/dumps/logs-t400-bios2.02-ec1.01/](../future/dumps/logs-t400-bios2.02-ec1.01/) - -- Version of flashrom used for the external flashing/reading logs is - the one that libreboot git revision c164960 uses. - -Copyright © 2015 Leah Rowe <info@minifree.org>\ -This page is available under the [CC BY SA 4.0](../cc-by-sa-4.0.txt) |