Open source EC for AMD based 13/16

Framework Laptop 16
1

We are opening sourcing the EC firmware for the Framework 16 and AMD Framework 13 projects here:

@Daniel_Schaefer and I will be posting build instructions soon, but currently we build in a cros_sdk environment with our own EC and Zephyr branch.

In our Framework 16 we have switched to a new EC and migrated to using zephyr.

Most of the work is in this folder:

We have a few changes to zephyr, so we build with our zephyr branch GitHub - FrameworkComputer/zephyr: Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.

We will open up our repo config to get the environment setup so you can build using the environment soon.

This is still under development for our product launch so not all tuning is completed, some features are still under development, and some bugs are not fixed. Since no hardware is publicly released yet, this should not be an issue.

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FW16 Electrical Specifications (MB/DB Pinout Clarification)
2

Was wondering if there was an update. I am interested in figuring out if possible to change keyboard layout via ec flashing. Thank you!

3

For Framework 16, the keyboard runs QMK, which is here:

For Framework 13, the EC is pushed to the branch above. So you could modify keyboard layouts if you needed to.
There is also a host command that you could use to remap keys. I think @DHowett has some examples of this.

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4

Thanks for the response! I’m on the 13, will try to hunt down for host command

5

Hi, So the branch lotus-zephyr is for both Framework 16 and AMD Framework 13?
Also on actual laptops there is no signature verification/encryption (as both are supported MEC1521H) enabled?
Thanks

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6

Yes.

The AMD 13” and 16” use a Nuvoton NPCX9 embedded controller. However, you are still correct: there is no signature verification or encryption.

You are free to build and flash your own firmware image.

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7

@Kieran_Levin @Daniel_Schaefer

Thanks for posting this repo. With the help of DHowett , I’ve been able to build the azalea target when using his gist to set up the environment and tools and work off the fwk-lotus-azalea-19573 branch.

However, I think I’m more interested in getting the fwk-lilac-27116 branch to build a lilac image for my AMD AI based board.

Are there updated build instructions to be had? I can see from running ectool that the de3833d2fd commit was used to build my current EC firmware.

8

Well I guess I’ll share my partial success on this.

I can use the fwk-lilac-27116 branches of both the EC and Zephyr code, and once I noticed that zephyr main’s west.xml file was pointing to a difference SHA for the cmsis module, I was able to complete a build for lilac.’

So @DHowett ‘s environment works to build lilac with the following changes

  <project path="src/platform/ec"
           name="EmbeddedController"
           remote="framework"
           revision="fwk-lilac-27116"
           groups="paygen,firmware" />

  <project path="src/third_party/zephyr/main"
           name="zephyr"
           remote="framework"
           revision="fwk-lilac-27116"
           groups="firmware,zephyr" />

 <!-- This module's SHA should match zephyr/main's west.yml file -->
  <project path="src/third_party/zephyr/cmsis"
           name="chromiumos/third_party/zephyr/cmsis"
           revision="4b96cbb174678dcd3ca86e11e1f24bc5f8726da0"
           groups="firmware,zephyr" />
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Framework Laptop 16 BIOS v4.02 and Driver v3.01 Releases (AMD Ryzen™ 7040 Series) STABLE
9

Hi,

Did y’all release the build instructions for Zephyr-based ECs yet? I cannot find any.

I’m trying to build an almost-exact replica of my FW12’s EC sunflower-3.0.4-fa46a90 but with some hardcoded integers modified so that my CPU can have a higher PL1 TDP in certain scenarios (the corresponding source file responsible for this behavior is here, in the update_soc_power_limit function).

I made a GitHub issue about this here as well.