diff options
| author | Iru Cai <mytbk920423@gmail.com> | 2019-06-30 21:16:50 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-10-30 08:21:13 +0000 |
| commit | b55943260407b94bbe27981dea92559c69b41144 (patch) | |
| tree | 1c5bfdfbab882af66307b44d11ed290d73f77da1 /Documentation/mainboard/lenovo | |
| parent | eef992deacf0dd49ef9c4e1690bd7e80cf1bfcce (diff) | |
mainboard: Add Lenovo ThinkPad T440p
The code is based on autoport.
This port is tested on a T440p without a dGPU and can boot Arch Linux
from SATA disk with SeaBIOS payload. The tested components and issues
are in the documentation.
Change-Id: I56a6b94197789a83731d8b349b8ba6814bf57ca2
Signed-off-by: Iru Cai <mytbk920423@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34359
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'Documentation/mainboard/lenovo')
| -rw-r--r-- | Documentation/mainboard/lenovo/t440p.md | 66 | ||||
| -rw-r--r-- | Documentation/mainboard/lenovo/t440p_all_flash_chips.jpg | bin | 0 -> 84271 bytes | |||
| -rw-r--r-- | Documentation/mainboard/lenovo/t440p_flash_chip.jpg | bin | 0 -> 82250 bytes |
3 files changed, 66 insertions, 0 deletions
diff --git a/Documentation/mainboard/lenovo/t440p.md b/Documentation/mainboard/lenovo/t440p.md new file mode 100644 index 0000000000..98c1da54ac --- /dev/null +++ b/Documentation/mainboard/lenovo/t440p.md @@ -0,0 +1,66 @@ +# Lenovo ThinkPad T440p + +This page describes how to run coreboot on [Lenovo ThinkPad T440p]. + +## Required proprietary blobs + +Please see [mrc.bin](../../northbridge/intel/haswell/mrc.bin). + +## Flashing instructions + +T440p has two flash chips, an 8MB W25Q64FV and a 4MB W25Q32FV. To flash +coreboot, you just need to remove the big door according to the T440 +[Hardware Maintenance Manual] and flash the 4MB chip. + + + +To access the 8MB chip, you need to remove the base cover. + + + +The flash layout of the OEM firmware is as follows: + + 00000000:00000fff fd + 00001000:00002fff gbe + 00003000:004fffff me + 00500000:00bfffff bios + +After flashing coreboot, you may need to re-plug the AC adapter to make +the laptop able to power on. + +## Known Issues + +- No audio output when using a headphone +- The touchpad is misconfigured, the 3 keys on top are all identified + as left button +- Cannot get the mainboard serial number from the mainboard: the OEM + UEFI firmware gets the serial number from an "emulated EEPROM" via + I/O port 0x1630/0x1634, but it's still unknown how to make it work + +## Untested + +- the dGPU model + +## Working + +- boot Arch Linux with Linux 4.19.77 from SeaBIOS payload +- integrated graphics init with libgfxinit +- EHCI debug: the port is the non-charging USB2 port on the right +- video output: internal (eDP), miniDP, dock DP, dock HDMI +- ACPI support +- keyboard and trackpoint +- SATA +- M.2 SATA SSD +- USB +- Ethernet +- WLAN +- WWAN +- bluetooth +- virtualization: VT-x and VT-d +- dock +- CMOS options: wlan, trackpoint, fn_ctrl_swap +- internal flashing when IFD is unlocked +- using `me_cleaner` + +[Lenovo ThinkPad T440p]: https://pcsupport.lenovo.com/us/zh/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t440p +[Hardware Maintenance Manual]: https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/t440p_hmm_en_sp40a25467_04.pdf diff --git a/Documentation/mainboard/lenovo/t440p_all_flash_chips.jpg b/Documentation/mainboard/lenovo/t440p_all_flash_chips.jpg Binary files differnew file mode 100644 index 0000000000..cab80f21c5 --- /dev/null +++ b/Documentation/mainboard/lenovo/t440p_all_flash_chips.jpg diff --git a/Documentation/mainboard/lenovo/t440p_flash_chip.jpg b/Documentation/mainboard/lenovo/t440p_flash_chip.jpg Binary files differnew file mode 100644 index 0000000000..3e041e8d15 --- /dev/null +++ b/Documentation/mainboard/lenovo/t440p_flash_chip.jpg |
