ThinkPad T400
| Specifications | |
|---|---|
| Manufacturer | Lenovo |
| Name | ThinkPad T400 |
| Released | 2009 |
| Chipset | Intel Cantiga GM45 |
| CPU | Intel Core 2 Duo (Penryn family). A Quad-core |
| mod exists, replacing the Core 2 Duo with a Core Quad | |
| Graphics | Intel GMA 4500MHD (and ATI Mobility Radeon HD |
| 3650 on some models) | |
| Display | 1280x800/1440x900 TFT |
| Memory | 2 or 4GB (Upgradable to 8GB) |
| Architecture | x86_64 |
| EC | Proprietary |
| Original boot firmware | LenovoBIOS |
| Intel ME/AMD PSP | Present. Can be completly disabled. |
| Flash chip | SOIC-8/SOIC-16/WSON-8 4MiB/8MiB (Upgradable |
| to 16MiB) |
W+: Works;
N: Doesn't work;
U: Untested;
P+: Partially works; | Features | |
|---|---|
| Internal flashing with original boot firmware | N |
| Display | W+ |
| Audio | W+ |
| RAM Init | W+ |
| External output | W+ |
| Display brightness | P+ |
| Payloads supported | |
|---|---|
| GRUB | Works |
| SeaBIOS | Works |
| SeaBIOS with GRUB | Works |
Dell Latitude E6400
If you haven’t bought an T400 yet: the Dell Latitude E6400 is much easier to flash; no disassembly required, it can be flashed entirely in software from Dell BIOS to Canoeboot. It is the same hardware generation (GM45), with same CPUs, video processor, etc.
Introduction
It is believed that all or most laptops of the model T400 are compatible. See notes about 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 Canoeboot. Canoeboot disables and removes it by using a modified descriptor: see ../install/ich9utils.html (contains notes, plus instructions)
Flashing instructions can be found at ../install/#flashprog
NOTE: Canoeboot standardises on flashprog now, as of 3 May 2024, which is a fork of flashrom.
EC update
It is recommended that you update to the latest EC firmware version. The EC firmware is separate from Canoeboot, 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:
NOTE: this can only be done when you are using Lenovo BIOS. How to update the EC firmware while running Canoeboot is unknown. Canoeboot only replaces the BIOS firmware, not EC.
Updated EC firmware has several advantages e.g. bettery battery handling.
The T400 is almost identical to the X200, code-wise. See x200.html.
Markdown file for this page: https://canoeboot.org/docs/hardware/t400.md
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