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Merged
jacob-carlborg merged 1 commit into from
Aug 13, 2026
Merged

Bundle qboot for x86-64 #13

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8 changes: 8 additions & 0 deletions changelog.md
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Expand Up @@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

### Added

* Bundle `qboot.rom` in the `qemu-system-x86_64` tarball. qboot is the firmware
for QEMU's `microvm` machine type, and the only one that can boot a PVH kernel
there, which is how a guest skips the boot loader, the PCI bus and ACPI
entirely
([cross-platform-actions/action#151](https://github.com/cross-platform-actions/action/issues/151))

### Removed

* Stop bundling the Linaro UEFI firmware for ARM64. `linaro_uefi.fd` is no
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7 changes: 7 additions & 0 deletions ci.rb
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Expand Up @@ -77,11 +77,18 @@ def bundle_firmware
end

class X86_64 < Architecture
# qboot.rom is the firmware for the `microvm` machine type, and the only one
# that can boot a PVH kernel there: QEMU hands the kernel to the firmware
# through fw_cfg rather than entering it itself, and qboot is also what
# leaves an MP table behind for a guest configured without ACPI. Given
# bios-256k.bin instead, such a guest never starts and says nothing at all
# about why.
FIRMWARES = %w[
bios-256k.bin
efi-e1000.rom
efi-virtio.rom
kvmvapic.bin
qboot.rom
vgabios-stdvga.bin
].freeze

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1 change: 1 addition & 0 deletions test.rb
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Expand Up @@ -62,6 +62,7 @@ def assert_statically_linked(architecture)
efi-e1000.rom
efi-virtio.rom
kvmvapic.bin
qboot.rom
vgabios-stdvga.bin
uefi.fd
]
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