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feat(drivers): added a virtio-gpu driver so aarch64 QEMU runs the desktop at 1920x1080 #341

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Merged
FlareCoding merged 4 commits into from
Oct 6, 2026
Merged

feat(drivers): added a virtio-gpu driver so aarch64 QEMU runs the desktop at 1920x1080 #341

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cfa58e5
fix(drivers): verified virtio MSI-X vectors and guarded reset before …
FlareCoding Oct 6, 2026
3cfb443
feat(drivers): added a virtio-gpu display driver
FlareCoding Oct 6, 2026
52a3049
feat(stlxdm): flushed presented damage to displays that need it
FlareCoding Oct 6, 2026
786d7a4
feat(build): ran aarch64 QEMU on a 1920x1080 virtio GPU instead of ramfb
FlareCoding Oct 6, 2026
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7 changes: 5 additions & 2 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,9 @@ else
$(error ACCEL must be tcg or hvf)
endif

# The kernel drives a virtio GPU because the aarch64 firmware caps ramfb at 1024x768
QEMU_AARCH64_DISPLAY := -device virtio-gpu-pci,xres=1920,yres=1080

# QEMU_X2APIC=1 makes the firmware start Stellux in x2APIC mode.
# The extra CPU at APIC ID 256 forces this because only x2APIC mode can address it.
ifeq ($(QEMU_X2APIC),1)
Expand Down Expand Up @@ -297,7 +300,7 @@ run-qemu-aarch64: check-image-aarch64
-smp $(QEMU_CPU_CORES) \
-bios $(QEMU_EFI_AARCH64) \
-drive format=raw,file=$(IMAGE_DIR)/stellux-aarch64.img \
-device ramfb \
$(QEMU_AARCH64_DISPLAY) \
-device qemu-xhci,id=xhci \
-device usb-hub,bus=xhci.0,port=1 \
-device usb-kbd,bus=xhci.0,port=1.1 \
Expand Down Expand Up @@ -419,7 +422,7 @@ run-qemu-aarch64-debug: check-image-aarch64
-smp $(QEMU_CPU_CORES) \
-bios $(QEMU_EFI_AARCH64) \
-drive format=raw,file=$(IMAGE_DIR)/stellux-aarch64.img \
-device ramfb \
$(QEMU_AARCH64_DISPLAY) \
-device qemu-xhci,id=xhci \
-device usb-hub,bus=xhci.0,port=1 \
-device usb-kbd,bus=xhci.0,port=1.1 \
Expand Down
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