loader.efi: For ipxe booting, fall back to md when ramdisk fails
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Authored by imp on Fri, Sep 4, 6:54 PM.

Details

Reviewers

kevans
tsoome
olivier
manu

Summary

Some UEFI firmwares do not contain the RamDisk protocol. When this
happens, load the file into a md disk instead. This is less desireable
than the RamDisk (since that allows better chain-booting options), but
sufficient to boot an image as a md device for FreeBSD. While most
severs have the RamDisk protocol enabled in their builds, I have two
IoT class boards from different manufacturers that do not. Since it
works just fine with this fallback, that's preferable.

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Skipped

Unit

Tests Skipped

Build Status

Buildable 76552
Build 73435: arc lint + arc unit

Event Timeline

imp created this revision.Fri, Sep 4, 6:54 PM

Herald added a reviewer: manu. · View Herald TranscriptFri, Sep 4, 6:54 PM

Herald added subscribers: dab, bcran. · View Herald Transcript

imp requested review of this revision.Fri, Sep 4, 6:54 PM

Harbormaster completed remote builds in B76532: Diff 185864.Fri, Sep 4, 6:54 PM

imp added a parent revision: D59420: loader: Add md support.Fri, Sep 4, 6:54 PM

imp retitled this revision from laoder.efi: For ipxe booting, fall back to md when ramdisk fails to loader.efi: For ipxe booting, fall back to md when ramdisk fails.Fri, Sep 4, 10:14 PM

rebase / update

Harbormaster completed remote builds in B76552: Diff 185886.Fri, Sep 4, 10:41 PM

Revision Contents
Changeset List

Path

Size

stand/

efi/

loader/

memdisk.c

48 lines

Diff 185886

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stand/efi/loader/memdisk.c

loader.efi: For ipxe booting, fall back to md when ramdisk failsNeeds ReviewPublicActions