Using LPC bus communication via coreboot.

[Paulo]

Hi,

We do plan to use coreboot in our COM Express modules based on Intel ATOM
processors E38xx. We currently

Use of-the-shelf products and they come with their own BIOS. In our
baseboard we connect a BCM from

Pigeon Point to the COM (Computer On Module) via IPMI system interfaces
(UART,SI, and LPC). At the moment

We want to test if communication via LPC is functioning but don’t have the
firmware required. The coreboot

Source code seems to have LPC implemented and I think we can use it for
sending something to the BMC so as

To check if we have successfully interconnected the module do the BMC.

Can someone inform if I can do that and how ?

Rgds,

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Paulo Roberto F. de A. Luz

Technology Engineer – Embedded Platform
  [e-mail]  pluzluz,paulo
[phone] / 9191 1402 
 http://www.padtec.com/ www.padtec.com

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[Peter Stuge]

Paulo wrote:
> We want to test if communication via LPC is functioning

Spend more time studying the architecture.

LPC is decoded as were it a local bus, but the particular platform
may require you to configure this decoding.

coreboot doesn't have any general model covering this. It's just one
of the numerous things missing from the project.
> Can someone inform if I can do that and how ?

Just issue appropriate instructions.
> This message and any attachment to it contains confidential information
> exclusively for the recipients. Please do not forward or distribute it
> to anyone else. If you have received this e-mail in error, please inform
> us immediately by answering it and then delete this message from your system.

Please understand how ridiculous and harmful the above lines in your
message are, especially in the context of an open source project
which is public *by design*.

//Peter