Re: [gentoo-dev] Proper installation path for efi binaries (.efi)

[Martin Pluskal <martin@pluskal.org>]

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On 4.2.2013 23:59, Greg KH wrote:
> On Mon, Feb 04, 2013 at 11:45:22PM +0100, Martin Pluskal wrote:
>> On 4.2.2013 23:34, Greg KH wrote:
>>> On Mon, Feb 04, 2013 at 08:13:58PM +0100, Martin Pluskal wrote:
>>>> Hi
>>>> 	I am curious what is the proper path for installation of efi binaries
>>>> (such as shim.efi) in gentoo. I don't think that installing them
>>>> directly into /boot/efi... is proper way - it seems to me that
>>>> /usr/lib64/efi or /usr/libexec/efi is more appropriate location for
>>>> them. What's your opinion?
>>>
>>> It depends on if you want the bootloader to use the binary or not.  If
>>> you do, it needs to be in /boot/efi/, otherwise it will never be able to
>>> be run by the UEFI system.
>> Well, in order to boot you have to place .efi into /boot/efi, I am not
>> sure if it is the best idea to directly install everything with .efi
>> into /boot/efi. As far as I know, elilo is installed into /usr/lib/elilo
>> and grub2 is placed into /boot/efi by grub2-install.
> 
> If elilo is in /usr/lib/elilo, the UEFI bios can not run the binary as
> it can't even see the filesystem to read the binary from.
Well it cannot, elilo.efi has to be placed to /boot/efi, install path is
however /usr/lib/elilo/elilo.efi.
> 
> So how can anything that is .efi _not_ be in /boot/efi and still work?
I am talking about location to which .efi is supposed to be placed after
installation, not necessary from which it can work.
> 
> Have you tried this out on your system with any success?
Why would I try it? I am not suggesting that it would work. After you
emerge elilo or grub2 you are still not able to boot unless you do other
steps (grub2-install or cp elilo.efi /boot/efi... && efibootmgr ... etc.)
> 
> What exactly is the issue you are trying to solve here?
I am thinking about creating ebuild for shim. I was wondering if there
is any policy or suggestion where to place .efi binaries or how to
handle them in gentoo - it seems that there is none so perhaps there
should be agreed on what best practice is (install directly into
/boot/efi or install else and let user manually copy .efi to /boot/efi
or something completely different (eselect efi ...)).

In suse default path is for example /usr/lib64/efi/:
ls /usr/lib64/efi/:
MokManager.efi  elilo.efi  shim-suse.efi  shim.efi
xen-4.2.1_02-0.7.2.efi  xen-4.2.efi  xen-4.efi  xen.efi

yet /boot/efi contains only elilo.efi
> 
> thanks,
> 
> greg k-h
> 
thanks

Martin



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