Re: [PATCH v7 2/2] Add a module for retrieving SMBIOS information

[Dimitri John Ledkov]

On Fri, 5 Jul 2019 at 13:48, David Michael <address@hidden> wrote:
>
> The following are two use cases from Rajat Jain <address@hidden>:
>
> 1) We have a board that boots Linux and this board itself can be plugged into 
> one of different chassis types. We need to pass different parameters to the 
> kernel based on the "CHASSIS_TYPE" information that is passed by the bios in 
> the DMI / SMBIOS tables.
>
> 2) We may have a USB stick that can go into multiple boards, and the exact 
> kernel to be loaded depends on the machine information (PRODUCT_NAME etc) 
> passed via the DMI.
>
> Signed-off-by: David Michael <address@hidden>
>

Another use case is aarch64 laptops effort. We have the same kernel,
and the same image bootable and usable across 4 different laptop
models, with the only difference between them being the DTB to load.
I was looking at how I can distinguish between the four models and
automatically pick the right dtb. I did see these patches and was very
sad when I found out that they didn't get merged.

Thank you for rebasing these on top of v2.04. I will try to cherrypick
them on top of Debian's experimental 2.04 grub and try to build an
installer "that just boots" without requiring users to pick a
particular dtb menuentry by hand. There are only dtbs in these images,
and only one right one for each model.

(Post install, we have flash-kernel mechanisms to continuously flash
and use the right dtb, this is needed for the installer's grub to be
able to detect models and thus boot the right dtb)

Whilst these laptops might become dtb-free in the future, I expect new
hardware to come out which would need dtb picker based on SMBIOS info
again.

-- 
Regards,

Dimitri.