[bug #64911] Support ACPI for OpenBSD EFI boot

URL:
  <https://savannah.gnu.org/bugs/?64911>

                 Summary: Support ACPI for OpenBSD EFI boot
                   Group: GNU GRUB
               Submitter: yuichiro
               Submitted: Mon 20 Nov 2023 03:31:06 AM UTC
                Category: Booting
                Severity: Major
                Priority: 5 - Normal
              Item Group: Feature Request
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 2.02
                 Release: 
         Discussion Lock: Any
         Reproducibility: Every Time
         Planned Release: None


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Follow-up Comments:


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Date: Mon 20 Nov 2023 03:31:06 AM UTC By: Yuichiro Naito <yuichiro>
When I booted OpenBSD from Grub2, the ACPI power-off function
didn’t work. It just quit without the shutdown sequence
when I pushed the power button of my PC.

In my investigation, the OpenBSD kernel requires the ACPI table pointer
in the boot argument. It is a member of the “bios_efiinfo_t” structure.

I wrote a patch to pass the “bios_efiinfo_t” structure which members
are filled in the same way as the OpenBSD boot loader. It works for
the OpenBSD 7.4 kernel.

I will write down what I see to fill the “bios_efiinfo_t” members.

* config_acpi

https://github.com/openbsd/src/blob/master/sys/arch/amd64/stand/efiboot/efiboot.c#L868-L869

* config_smbios

https://github.com/openbsd/src/blob/master/sys/arch/amd64/stand/efiboot/efiboot.c#L872-L873

* config_esrt

https://github.com/openbsd/src/blob/master/sys/arch/amd64/stand/efiboot/efiboot.c#L876-L877

* mmap_*

https://github.com/openbsd/src/blob/master/sys/arch/amd64/stand/efiboot/efiboot.c#L330-L422

* fb_*

https://github.com/openbsd/src/blob/master/sys/arch/amd64/stand/efiboot/efiboot.c#L928-L955

* system_table

https://github.com/openbsd/src/blob/master/sys/arch/amd64/stand/efiboot/efiboot.c#L961
https://github.com/openbsd/src/blob/master/sys/arch/amd64/stand/efiboot/efiboot.c#L81

I’m a newbie to the GRUB2 project. If my patch violates the coding
 style or manners of this project. Please let me know. I will update
my patch.







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File Attachments:


-------------------------------------------------------
Date: Mon 20 Nov 2023 03:31:06 AM UTC  Name: openbsd_efiinfo.patch  Size:
10KiB   By: yuichiro

<http://savannah.gnu.org/bugs/download.php?file_id=55341>

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