Bug 228922 - UEFI boot loader loose ends
Summary: UEFI boot loader loose ends
Status: Closed FIXED
Alias: None
Product: Base System
Classification: Unclassified
Component: bin (show other bugs)
Version: CURRENT
Hardware: Any Any
: --- Affects Many People
Assignee: Warner Losh
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-06-12 09:01 UTC by Rodney W. Grimes
Modified: 2021-07-07 04:14 UTC (History)
3 users (show)

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Description Rodney W. Grimes freebsd_committer freebsd_triage 2018-06-12 09:01:47 UTC 
UEFI boot loader loose ends
Comment 1 Conrad Meyer freebsd_committer freebsd_triage 2018-06-12 17:43:07 UTC 
Any specifics, so we don't forget the ideas from BSDCan?
Comment 2 Warner Losh freebsd_committer freebsd_triage 2018-06-12 17:51:03 UTC 
my current list:

Chain booting to multiple levels (loader.efi needs to look at BootXXXX)

Sane fallback when nothing left to do (either due to BootOrder exhaustion or protocol violations)

/boot/efi/root would be nice
Comment 3 Ed Maste freebsd_committer freebsd_triage 2018-07-24 15:26:38 UTC 
r336656 Finalize the boot manager protocol support for next-stage boot loading.
Comment 4 Rebecca Cran freebsd_committer freebsd_triage 2018-12-25 02:20:43 UTC 
Is this still relevant? I wonder if instead of supporting chain booting, we should exit and allow the system to try other BootXXXX entries itself instead?
Comment 5 Warner Losh freebsd_committer freebsd_triage 2018-12-25 03:01:59 UTC 
Yes. It is still relevant. UEFI still can't read UFS or ZFS filesystems. When we load loader.efi directly, we have to then load a kernel using it. BootNext can never help this situation because the kernel is not an EFI loader. Chain booting isn't used here in the narrow loader.efi sense of the chain boot command, but in the larger sense of loading the next thing.
Comment 6 Warner Losh freebsd_committer freebsd_triage 2021-07-07 04:14:45 UTC 
these issues have all been fixed.