Gentoo Archives: gentoo-dev

From: Alec Warner <antarus@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] Proper installation path for efi binaries (.efi)
Date: Tue, 05 Feb 2013 04:25:06
Message-Id: CAAr7Pr_ZWXBWjM4RdRxVs31GU09JbVoqvepCQT6OYPO-ULAEEg@mail.gmail.com
In Reply to: Re: [gentoo-dev] Proper installation path for efi binaries (.efi) by Martin Pluskal
1 On Mon, Feb 4, 2013 at 3:14 PM, Martin Pluskal <martin@×××××××.org> wrote:
2 > On 4.2.2013 23:59, Greg KH wrote:
3 >> On Mon, Feb 04, 2013 at 11:45:22PM +0100, Martin Pluskal wrote:
4 >>> On 4.2.2013 23:34, Greg KH wrote:
5 >>>> On Mon, Feb 04, 2013 at 08:13:58PM +0100, Martin Pluskal wrote:
6 >>>>> Hi
7 >>>>> I am curious what is the proper path for installation of efi binaries
8 >>>>> (such as shim.efi) in gentoo. I don't think that installing them
9 >>>>> directly into /boot/efi... is proper way - it seems to me that
10 >>>>> /usr/lib64/efi or /usr/libexec/efi is more appropriate location for
11 >>>>> them. What's your opinion?
12 >>>>
13 >>>> It depends on if you want the bootloader to use the binary or not. If
14 >>>> you do, it needs to be in /boot/efi/, otherwise it will never be able to
15 >>>> be run by the UEFI system.
16 >>> Well, in order to boot you have to place .efi into /boot/efi, I am not
17 >>> sure if it is the best idea to directly install everything with .efi
18 >>> into /boot/efi. As far as I know, elilo is installed into /usr/lib/elilo
19 >>> and grub2 is placed into /boot/efi by grub2-install.
20 >>
21 >> If elilo is in /usr/lib/elilo, the UEFI bios can not run the binary as
22 >> it can't even see the filesystem to read the binary from.
23 > Well it cannot, elilo.efi has to be placed to /boot/efi, install path is
24 > however /usr/lib/elilo/elilo.efi.
25 >>
26 >> So how can anything that is .efi _not_ be in /boot/efi and still work?
27 > I am talking about location to which .efi is supposed to be placed after
28 > installation, not necessary from which it can work.
29 >>
30 >> Have you tried this out on your system with any success?
31 > Why would I try it? I am not suggesting that it would work. After you
32 > emerge elilo or grub2 you are still not able to boot unless you do other
33 > steps (grub2-install or cp elilo.efi /boot/efi... && efibootmgr ... etc.)
34 >>
35 >> What exactly is the issue you are trying to solve here?
36 > I am thinking about creating ebuild for shim. I was wondering if there
37 > is any policy or suggestion where to place .efi binaries or how to
38 > handle them in gentoo - it seems that there is none so perhaps there
39 > should be agreed on what best practice is (install directly into
40 > /boot/efi or install else and let user manually copy .efi to /boot/efi
41 > or something completely different (eselect efi ...)).
42 >
43 > In suse default path is for example /usr/lib64/efi/:
44 > ls /usr/lib64/efi/:
45 > MokManager.efi elilo.efi shim-suse.efi shim.efi
46 > xen-4.2.1_02-0.7.2.efi xen-4.2.efi xen-4.efi xen.efi
47 >
48 > yet /boot/efi contains only elilo.efi
49
50 Can you even guarantee that /boot is mounted when your package is
51 installed? That would be my major concern on Gentoo...
52 -A
53
54 >>
55 >> thanks,
56 >>
57 >> greg k-h
58 >>
59 > thanks
60 >
61 > Martin
62 >
63 >

Replies

Subject Author
Re: [gentoo-dev] Proper installation path for efi binaries (.efi) "Chí-Thanh Christopher Nguyễn" <chithanh@g.o>