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gnu: ovmf-aarch64: Pad firmware to 64 MiB for QEMU compatibility.

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QEMU's virt machine on AArch64 requires pflash devices to be exactly
64 MiB.  The raw QEMU_EFI.fd produced by EDK2 is only ~2 MiB, causing
GRUB EFI tests to fail with:

  cfi.pflash01 device requires 67108864 bytes, pflash0 block backend
  provides 2097152 bytes

Pad the firmware file to match, as Nix does.

* gnu/packages/firmware.scm (ovmf-aarch64)[arguments]: Pad
ovmf_aarch64.bin to 64 MiB with truncate-file.

Change-Id: I589325294f264b0af69a9a0261c35d9a862e03c5
Signed-off-by: Efraim Flashner <efraim@flashner.co.il>
This commit is contained in:
Roman Scherer
2026-03-14 13:58:31 +01:00
committed by Efraim Flashner
parent 8cc2c81735
commit e320469cf0
1 changed files with 8 additions and 4 deletions
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12
gnu/packages/firmware.scm
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@@ -1253,11 +1253,15 @@ Virtual Machines. OVMF contains a sample UEFI firmware for QEMU and KVM.")
#~(modify-phases #$phases
(replace 'install
(lambda _
(let ((fmw (string-append #$output "/share/firmware")))
(let ((fmw (string-append #$output "/share/firmware"))
(build-dir "Build/ArmVirtQemu-AARCH64/RELEASE_GCC/FV"))
(mkdir-p fmw)
(copy-file (string-append "Build/ArmVirtQemu-AARCH64/"
"RELEASE_GCC/FV/QEMU_EFI.fd")
(string-append fmw "/ovmf_aarch64.bin"))))))))))))
;; QEMU's virt machine requires 64 MiB pflash devices on
;; AArch64. Pad the firmware files to match.
(copy-file (string-append build-dir "/QEMU_EFI.fd")
(string-append fmw "/ovmf_aarch64.bin"))
(truncate-file (string-append fmw "/ovmf_aarch64.bin")
(* 64 1024 1024))))))))))))
(define-public ovmf-arm
(let ((base (make-ovmf-firmware "armhf")))