[Bug 1856424] Re: please add smbios module to the signed grub2 images

[Dimitri John Ledkov]

On Thu, 4 Jun 2020, 10:21 Frédéric TOURRET, <1856424 at bugs.launchpad.net>
wrote:

> Hi,
>
> I'm a beginner in GRUB2 and for my use i need to have BIOS information
> to test the model of hardware i'm uses and fix kernel parameters.
>
> I'm working on Debian Jessie. I have downloaded latest sources of GRUB
> (2.04) and install it correctly. But smbios module is not present, how
> can i include smbios.mod sources ?
>
> Thanks for your help.
>

It is included in Ubuntu, so please switch and use Ubuntu.

This bug report is specific to Ubuntu distribution, and the grub that
ubuntu ships, with ubuntu patches. And it is not appropriate to enquire
about upstream grub development.

Grub upstream development is at https://www.gnu.org/software/grub/ you will
find mailing lists there that can help you with upstream grub sources.

For example, did you try building grub form upstream git master?

Please join grub upstream mailing lists to enquire about upstream grub
development or upstream support further.

Regards,

Dimitri.

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https://bugs.launchpad.net/bugs/1856424

Title:
  please add smbios module to the signed grub2 images

Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2 source package in Focal:
  Fix Released

Bug description:
  smbios is a new module available in grub2 upstream master, merged
  shortly after 2.04 release.

  It allows reading values from various SMBIOS tables to allow detecting
  vendor, make, model among with other smbios defined handles. In terms
  of userspace, it can be compared to dmidecode.

  The premise to include this module in the EFI prebuild images is to
  allow automatic selection of appropriate kernel and kernel option at
  boot time of certified or specilized hardware.

  For example:
  - allowing to choose linux-hwe kernel on newer generation
    (query handle 0x37, dmi type 4 Processor information)
  - allowing to choose linux-oem kernel on OEM certified hardware
    (query handle 0x1, DMI type 1, Manufactuere / serial number / sku number)
  - allowing to choose correct DTB for arm64 Laptops

  The grub module itself is fairly trivial, and basically dumps memory,
  processes it into various data types, optionally storing them in a
  variable thus allowing making scripting decisions based on them (i.e.
  setting the 'default' menuetry)

  This is a request to review this module for inclusion in the prebuilt
  UEFI signed images of grub.

  As a patch:
  http://git.savannah.gnu.org/cgit/grub.git/commit/?id=688023cd0ac4c985fd0e2ec477fcf1ec33a0e49c

  Main Files:
  http://git.savannah.gnu.org/cgit/grub.git/tree/grub-core/commands/smbios.c?id=688023cd0ac4c985fd0e2ec477fcf1ec33a0e49c
  http://git.savannah.gnu.org/cgit/grub.git/tree/grub-core/commands/i386/pc/smbios.c?id=688023cd0ac4c985fd0e2ec477fcf1ec33a0e49c
  http://git.savannah.gnu.org/cgit/grub.git/tree/grub-core/commands/efi/smbios.c?id=688023cd0ac4c985fd0e2ec477fcf1ec33a0e49c

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