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Re: Grub-devel Digest, Vol 76, Issue 30

Subject: Re: Grub-devel Digest, Vol 76, Issue 30
Date: Sun, 20 Jun 2010 19:30:23 +0530

Thanks. A blank prefix parameter fixed the problem.

> On the contrary. Now we use the same defaults on all platforms which
> simplifies maintaining and packaging. To get old behaviour add
> -p ""
> to grub-mkimage line

What about this request? Is this feasible?

>> I have one more feature request :-
>> Is it possible to specify which config file should be read by grub
>> instead of a hard-coded grub.cfg ? For example :- If I have a <EFI
>> SYSTEM PARTITION>/efi/grub2/ folder with grub1.efi grub2.efi grub3.efi
>> (each having different set of modules with normal and other basic
>> modules included) etc., and I have grub.cfg grub5.cfg grub4.cfg, I
>> want grub1.efi to use grub.cfg, grub2.efi to use grub5.cfg and
>> grub3.efi to use grub4.cfg (the config file name can be user choice).
>> One efi app should not load any other cfg file even if many cfg files
>> are present in the prefix folder.
>> I noticed an option of embedding a config file in grub-mkimage .
>> Instead of embedding, I just want the generated image to load a
>> different config file with a filename of my choice which can be
>> specified as a parameter in grub-mkimage. Is this possible? This can
>> also be an option for core.img of grub2 BIOS, but this option is more
>> useful for UEFI where multiple grub efi apps can be created.
>> Finally, just a matter of interest, what non-Apple UEFI (2.x spec, not
>> 1.1 spec) systems do you guys use primarily for developing grub2 UEFI?
>> Any Intel Motherboard or some UEFI based laptop (HP Elitebook or Sony
>> Vaio) or USB based Tianocore EDK or EDK2 DUET (the firmware I use)?
>> Regards.

The only place where the config file name is hardcoded to be
"grub.cfg" is (grub2-source)/normal/main.c

config = grub_xasprintf ("%s/grub.cfg", prefix); (line 519)

Can this be made as a grub-mkimage option instead of hardcoding or
even embedding a config file in the generated image. Although it is
possible to replace the filename in the mentioned line and compiled, I
need something that can be defined while creating the grub2 boot image
or the efi app.


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