2023-04-19 16:45:48 +00:00
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title: Latitude E6400
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x-toc-enable: true
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<div class="specs">
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<center>
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2023-04-19 19:14:59 +00:00
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Dell Latitude E6400
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</center>
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| ***Specifications*** | |
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|----------------------------|------------------------------------------------|
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| **Manufacturer** | Dell |
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| **Name** | Latitude E6400 |
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| **Released** | 2009 |
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| **Chipset** | Intel Cantiga GM45 |
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| **CPU** | Intel Core 2 Duo (Penryn family). A Quad-core
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mod exists, replacing the Core 2 Duo with a Core Quad |
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2023-04-19 19:13:18 +00:00
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| **Graphics** | Intel GMA 4500MHD (and NVidia Quadro NVS 160M
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on some models) |
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| **Display** | 1280x800/1440x900 TFT |
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| **Memory** | 2 or 4GB (Upgradable to 8GB) |
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| **Architecture** | x86_64 |
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| **EC** | SMSC MEC5035 with proprietary firmware |
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| **Original boot firmware** | Dell BIOS |
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| **Intel ME/AMD PSP** | Present. Can be completely disabled. |
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| **Flash chip** | SOIC-8 4MiB or 2MiB+4MiB (Upgradable to 16MiB) |
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```
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W+: Works without blobs;
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N: Doesn't work;
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W*: Works with blobs;
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U: Untested;
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P+: Partially works;
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P*: Partially works with blobs
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```
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| ***Features*** | |
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|---------------------------------------------------|----|
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| **Internal flashing with original boot firmware** | W+ |
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| **Display** | W+ |
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| **Audio** | W+ |
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| **RAM Init** | W+ |
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| **External output** | W+ |
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| **Display brightness** | P+ |
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| ***Payloads supported*** | |
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|---------------------------|-----------|
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| **GRUB** | Not yet |
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| **SeaBIOS** | Works |
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| **SeaBIOS with GRUB** | Not yet |
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</div>
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Introduction
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============
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2023-04-19 18:14:14 +00:00
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**To install Libreboot, see: [E6400 installation
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instructions](../install/e6400.md)**
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2023-04-19 18:09:55 +00:00
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ROM images for Dell Latitude E6400 will be available in the next Libreboot
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release after 20230413, or you can compile a ROM image for installation via
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lbmk, see: [build instructions](../build/)
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We believe all models with iGPU are GM45 and will work perfectly. We suspect
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that the dGPU models are PM45 and won't work yet, because Libreboot currently
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supports just the iGPU (Intel graphics) on these machines.
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There are two possible flash chip sizes for the E6400: 4MiB (32Mbit) or
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2+4MiB (64Mbit). Libreboot presently supports the 4MiB version, and provides
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8MiB images for those who upgrade their flash to 8MiB or 16MiB.
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Most people will want to use the 4MiB images.
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SeaBIOS-only
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------------
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At the time of publishing this port, keyboard initialisation is
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broken in the GRUB payload (it *works fine* in BIOS GRUB, loaded
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from SeaBIOS, but not *coreboot* GRUB provided by Libreboot - see
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build targets `i386-coreboot` and `i386-pc` in GRUB).
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This is being investigated. For the time being, SeaBIOS payload works
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very well and it is provided by Libreboot.
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Blob-free setup (no-ME possible)
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---------------
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This is a GM45/PM45 platform, so completely libre initialisation in
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coreboot is possible, provided by default in Libreboot.
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Management Engine (ME) firmware removed
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-------------------------
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This port in Libreboot makes use of `ich9gen` from ich9utils, which
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you can read about in the [ich9utils manual](../install/ich9utils.md) - this
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creates a no-ME setup. The Intel Management Engine firmware (ME) is completely
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removed, and the ME disabled, just like on ThinkPad X200, T400 and so on.
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2023-04-19 16:45:48 +00:00
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*The E6400 laptops may come with the ME (and sometimes AMT in addition) before
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flashing libreboot. Dell also sold configurations with the ME completely
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disabled, identifiable by a yellow sticker reading "3 ME Disabled" inside the
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bottom panel. This config sets the MeDisable bit in the IFD and sets the ME
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region almost entirely to 1's, with the occasional 32-bit value (likely not
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executable). libreboot disables and removes it by using a modified descriptor:
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see [../install/ich9utils.md](../install/ich9utils.md)*
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(contains notes, plus instructions)
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