Re: EFI Boot problem

[Peter Skvarka <ps%softinengines.com@localhost>]

Yes, my opinion is the same like you wrote, it's this machine (or this 
EFI partition) specific problem.

I found workaround.
Rebuilt bootx64.efi with path equal to "boot.cfg" instead of 
"esp:/EFI/NetBSD/boot.cfg".
It works with this adjustment.
So bootx64.efi has problem with above path on this machine.

I am not familiar with history of this efiboot development and how in 
current code object "esp:" is created,
but it seems that run-time function open() has problem.
open() should return error due to invalid path and not hang. Maybe it 
can help to add in C code some test like:

if(files on "esp:..." are readable) {
  use open("esp:/EFI/NetBSD/boot.cfg",..)
} else {
  use open("boot.cfg",...) or printf(error message)
}

This HW (HP Compaq Elite 8300 CMT) is quite old (16years), it supports 
as BIOS as EFI boot and it seems that also some mix of both.

On 2/19/25 09:19, Martin Husemann wrote:
> On Tue, Feb 18, 2025 at 07:05:36PM +0100, Peter Skvarka wrote:
> > and hangs inside of open().
> >
> > open() uses config path from:
> > #define EFIBOOTCFG_FILENAME     "esp:/EFI/NetBSD/boot.cfg"
> > it is seen on my printf messages.
> >
> > I have present valid boot.cfg there.
> > When I remove boot.cfg the result is the same, it hangs inside of open()
> >
> > Why open() is not work on that older machine ?
> > Any ideas ?
> That sounds like a bug in your UEFI firmware. Maybe it does not like the
> exact file system format the ESP uses? You could try saving the contents,
> reformatting with various newfs_msdos options (especially -F 12 ... 32)
> and restoring the content.
>
> Martin