mb/lenovo/w541: Add ThinkPad W541

Add support for the ThinkPad W541 based on Peter Lemenkov's initial W541
port. Compiled and tested with SeaBIOS and Tianocore booting into Arch
Linux 5.10.32-lts. The Haswell mrc.bin blob is required.

Tested working:
- SATA SSD
- SATA DVD drive
- M.2 SATA
- All USB ports
- SD card reader
- Speakers/headphone jack
- Keyboard/touchpad
- libgfxinit
- VGA
- mini DisplayPort (Thunderbolt untested)
- eDP laptop screen
- NVIDIA GPU in Linux
- Camera/Mic
- Smartcard reader
- Internal flashing when IFD is unlocked
- ThinkPad basic dock (VGA, USB, Ethernet)
- CMOS options
- WLAN
- Bluetooth
- Ethernet
- Using me_cleaner
- All DDR3 slots

Not working:
- Keyboard backlight
- First boot can take up to 20s (MRC.bin is slow)

Untested:
- Thunderbolt
- Internal flashing when IFD is locked
- Other ThinkPad docks (DisplayPort, DVI, Audio)
- ExpressCard slot
- Battery thresholds
- WWAN card
- Fingerprint reader
- USB Debug console

Signed-off-by: Justin Wu <amersel@runbox.me>
Change-Id: Ia43070f51bba3cf59ba9b7d9e29e4e778efbeb08
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52659
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Peter Lemenkov <lemenkov@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/mainboard/lenovo/w541/cmos.default b/src/mainboard/lenovo/w541/cmos.default
new file mode 100644
index 0000000000..facdd3a774
--- /dev/null
+++ b/src/mainboard/lenovo/w541/cmos.default
@@ -0,0 +1,13 @@
+boot_option=Fallback
+debug_level=Debug
+power_on_after_fail=Disable
+nmi=Enable
+volume=0x3
+wlan=Enable
+fn_ctrl_swap=Disable
+f1_to_f12_as_primary=Enable
+sticky_fn=Disable
+trackpoint=Enable
+backlight=Keyboard
+enable_dual_graphics=Disable
+usb_always_on=Disable