Re: Bug#927892: grub-ieee1275-bin: Please add bootinfo.txt for sparc and sparc64
On 25/04/2019 07:29, John Paul Adrian Glaubitz wrote:
> On 4/25/19 8:07 AM, Mark Cave-Ayland wrote:
>>> Yes, that would be most likely the sparc64.elf image that grub-mkimage produces. But
>>> I don't know yet how to encode the boot path for that into the bootable image.
>>
>> I'm struggling to see from the man pages the relationship between sparc64.elf and
>> cdboot.img. Presumably grub-mkimage generates sparc64.elf which is a self-contained
>> grub executable, whilst cdboot.img is the compiled version of boot.S?
>
> Yes, sparc64.elf is the boot image created by grub-mkimage and whose bootpath needs
> to be passed to the initial boot loader.
I'd expect that to be done by boot.S since the PROM on it's own can't load
sparc64.elf directly.
A quick browse of the source shows that it looks up bootpath and tries to load the
grub kernel from the same device, i.e. the partition or slice that cdrom and/or disk
in the PROM is aliased to. I can't see how that would work because that's where
boot.S was loaded from in the first place.
When grub is installed to disk as per your latest ISO images, what is the
filesystem/partition type being used?
ATB,
Mark.
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