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Differential D38264

kboot: Try to read UEFI memory from physical memory on aarch64
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Authored by imp on Jan 29 2023, 3:16 PM.
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andrew
dab
emaste

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Reviewers
kevans
tsoome
manu
andrew
Commits
rG045fa2801a8b: kboot: Try to read UEFI memory from physical memory on aarch64
Summary

Try to open /dev/mem to read in the UEFI memory map. If we can't, then
we'll read it in the trampoline.

We also have to read in /proc/iomem to find reserved areas in
Linux. These are free once the kernel is running, but cannot be used for
a kernel booted via kboot.

Sponsored by: Netflix

Diff Detail

Repository
rG FreeBSD src repository
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Tests Not Applicable

Event Timeline

imp created this revision.Jan 29 2023, 3:16 PM
Herald added a reviewer: manu. · View Herald TranscriptJan 29 2023, 3:16 PM
Herald added subscribers: dab, emaste, andrew. · View Herald Transcript
imp requested review of this revision.Jan 29 2023, 3:16 PM
Harbormaster completed remote builds in B49306: Diff 116022.Jan 29 2023, 3:16 PM
imp added a parent revision: D38263: kboot: use host: for some files..Jan 29 2023, 3:16 PM
imp added a child revision: D38265: kboot: For hostfs, return better errors from read, where possible..
imp updated this revision to Diff 116266.Feb 1 2023, 11:25 PM

rebase / refactor / redo

Harbormaster completed remote builds in B49460: Diff 116266.Feb 1 2023, 11:25 PM
imp updated this revision to Diff 116294.Feb 2 2023, 3:52 AM

Update to reflect the printf tweak in an eariler patch

Harbormaster completed remote builds in B49471: Diff 116294.Feb 2 2023, 3:52 AM
kevans accepted this revision.Feb 2 2023, 3:55 AM
This revision is now accepted and ready to land.Feb 2 2023, 3:55 AM
andrew accepted this revision.Feb 2 2023, 2:54 PM
imp updated this revision to Diff 116351.Feb 2 2023, 6:23 PM

Declare fd2, removed as unused in prior commit

This revision now requires review to proceed.Feb 2 2023, 6:23 PM
Harbormaster completed remote builds in B49485: Diff 116351.Feb 2 2023, 6:23 PM
tsoome requested changes to this revision.Feb 2 2023, 9:59 PM
tsoome added inline comments.
stand/kboot/arch/aarch64/load_addr.c
103

trampoline ?

This revision now requires changes to proceed.Feb 2 2023, 9:59 PM
imp updated this revision to Diff 116369.Feb 2 2023, 10:06 PM

Fix spelling

Harbormaster completed remote builds in B49494: Diff 116369.Feb 2 2023, 10:06 PM
imp marked an inline comment as done.Feb 2 2023, 10:06 PM
imp added inline comments.
stand/kboot/arch/aarch64/load_addr.c
103

indeed.

tsoome accepted this revision.Feb 2 2023, 10:06 PM
This revision is now accepted and ready to land.Feb 2 2023, 10:06 PM
Closed by commit rG045fa2801a8b: kboot: Try to read UEFI memory from physical memory on aarch64 (authored by imp). · Explain WhyFeb 3 2023, 3:52 PM
This revision was automatically updated to reflect the committed changes.
imp marked an inline comment as done.
imp added a commit: rG045fa2801a8b: kboot: Try to read UEFI memory from physical memory on aarch64.

Revision Contents
Changeset List

PathSize
stand/
kboot/
arch/
aarch64/
51 lines

Diff 116418

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stand/kboot/arch/aarch64/load_addr.c

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