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Differential D48884

riscv: enable EFI framebuffer
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Authored by mhorne on Feb 7 2025, 4:16 PM.
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bcran
dab
imp

Details

Reviewers
kevans
emaste
manu
Group Reviewers
riscv
Commits
rGe2a08ac9ce42: riscv: enable EFI framebuffer
Summary

Pass framebuffer information from loader(8) to the kernel via the
MODINFOMD_EFI_FB metadata field.

Enable the vt_efifb driver. A small tweak is required to work around the
lack of VM_MEMATTR_WRITE_COMBINING on this platform; we use
VM_MEMATTR_UNCACHEABLE instead.

Test Plan

Tested with the RVVM simulator. We are missing input drivers required for the graphical mode, but the framebuffer works.

Diff Detail

Repository
rG FreeBSD src repository
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Unit
Tests Skipped
Build Status
Buildable 62291
Build 59175: arc lint + arc unit

Event Timeline

mhorne created this revision.Feb 7 2025, 4:16 PM
Herald added a reviewer: manu. · View Herald TranscriptFeb 7 2025, 4:16 PM
Herald added subscribers: dab, bcran, imp. · View Herald Transcript
mhorne requested review of this revision.Feb 7 2025, 4:16 PM
Harbormaster completed remote builds in B62291: Diff 150680.Feb 7 2025, 4:16 PM
mhorne edited the test plan for this revision. (Show Details)Feb 7 2025, 4:17 PM
mhorne added a child revision: D48887: riscv/stand: pass boot hart in loader metadata.Feb 7 2025, 4:22 PM
This revision was not accepted when it landed; it landed in state Needs Review.Mar 3 2025, 4:12 PM
Closed by commit rGe2a08ac9ce42: riscv: enable EFI framebuffer (authored by mhorne). · Explain Why
This revision was automatically updated to reflect the committed changes.
mhorne added a commit: rGe2a08ac9ce42: riscv: enable EFI framebuffer.

Revision Contents
Changeset List

PathSize
stand/
efi/
loader/
2 lines
sys/
dev/
vt/
hw/
efifb/
9 lines
riscv/
conf/
1 line
include/
1 line

Diff 150680

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stand/efi/loader/bootinfo.c

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sys/dev/vt/hw/efifb/efifb.c

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sys/riscv/conf/GENERIC

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sys/riscv/include/metadata.h

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