[coreboot-gerrit] Change in coreboot[master]: [WIP]mb/lenovo/r500: Add mainboard

[Arthur Heymans (Code Review)]

Hello build bot (Jenkins), 

I'd like you to reexamine a change. Please visit

    https://review.coreboot.org/28644

to look at the new patch set (#2).

Change subject: [WIP]mb/lenovo/r500: Add mainboard
......................................................................

[WIP]mb/lenovo/r500: Add mainboard

Tested:
- Ethernet NIC
- Wifi RFKill
- USB
- LVDS, VGA with libgfxinit
- Booting with dock attached (COM1)
- Keyboard, trackpoint
- SeaBIOS 1.10.3
- S3 resume (Needs SeaBIOS with sercon disabled)
- Tested in descriptor mode, with vendor FD and ME

Untested:
- SATA (likely works)
- Trackpad (my cable is broken, likely works)
- Displayport (likely works)
- Descriptorless mode
- DVD drive
- Extra battery

Does not work:
- Dock hotplug
- Quad core CPU (hangs during AP init, probably needs hardware mod)
- Models with a sole ATI GPU (needs probing of PEG in romstage)
- Hotplugging the expresscard slot (works with 'echo 1 | sudo tee
/sys/bus/pci/rescan')

TODO:
- proper dock support
- documentation

note: This board is hard to flash, I had to desolder the flash.

TESTED: on a R500 with an Intel iGPU, SeaBIOS 1.10.3, Debian 9, Linux 4.9

Change-Id: I9e129b2e916acdf2b8534fa9d8d2cfc8f64f5815
Signed-off-by: Arthur Heymans <arthur at aheymans.xyz>
---
M src/mainboard/lenovo/t400/Kconfig
M src/mainboard/lenovo/t400/Kconfig.name
M src/mainboard/lenovo/t400/Makefile.inc
M src/mainboard/lenovo/t400/dsdt.asl
A src/mainboard/lenovo/t400/variants/r500/Makefile.inc
A src/mainboard/lenovo/t400/variants/r500/devicetree.cb
A src/mainboard/lenovo/t400/variants/r500/gpio.c
A src/mainboard/lenovo/t400/variants/t400/Makefile.inc
R src/mainboard/lenovo/t400/variants/t400/devicetree.cb
R src/mainboard/lenovo/t400/variants/t400/gpio.c
10 files changed, 378 insertions(+), 2 deletions(-)


  git pull ssh://review.coreboot.org:29418/coreboot refs/changes/44/28644/2
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I9e129b2e916acdf2b8534fa9d8d2cfc8f64f5815
Gerrit-Change-Number: 28644
Gerrit-PatchSet: 2
Gerrit-Owner: Arthur Heymans <arthur at aheymans.xyz>
Gerrit-Reviewer: Arthur Heymans <arthur at aheymans.xyz>
Gerrit-Reviewer: build bot (Jenkins) <no-reply at coreboot.org>
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