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Support aarch64 for GRUB and Limine EFI installation (#4641) 

On aarch64 both the GRUB and Limine installers assume x86 and fail.

GRUB names its EFI target 'arm64', but platform.machine() returns
'aarch64', so passing --target=aarch64-efi is rejected. Map aarch64
to the arm64 target name expected by grub-install.

Limine ships architecture-specific default EFI binaries: BOOTAA64.EFI
on aarch64 versus BOOTIA32.EFI and BOOTX64.EFI on x86. Select the
correct binaries in the three places that reference them: when copying
them into the ESP, when building the pacman hook that refreshes them on
update, and when choosing the 64-bit EFI boot menu loader path.

Co-authored-by: Steev Klimaszewski <steev@parrotsec.org>
This commit is contained in:
Steev Klimaszewski 2026-07-24 06:30:54 -05:00 committed by GitHub
parent 11e45aebeb
commit 3653fbd695
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GPG Key ID: B5690EEEBB952194
1 changed files with 10 additions and 6 deletions
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16
archinstall/lib/installer.py
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@ -1355,7 +1355,7 @@ class Installer:
boot_dir = boot_partition.mountpoint
add_options = [
f'--target={platform.machine()}-efi',
f'--target={"arm64" if platform.machine() == "aarch64" else platform.machine()}-efi',
f'--efi-directory={efi_partition.mountpoint}',
*boot_dir_arg,
'--bootloader-id=GRUB',
@ -1489,15 +1489,19 @@ class Installer:
efi_dir_path.mkdir(parents=True, exist_ok=True)
efi_binaries: tuple[str, ...]
if platform.machine() == 'aarch64':
efi_binaries = ('BOOTAA64.EFI',)
else:
efi_binaries = ('BOOTIA32.EFI', 'BOOTX64.EFI')
try:
for file in ('BOOTIA32.EFI', 'BOOTX64.EFI'):
for file in efi_binaries:
(limine_path / file).copy_into(efi_dir_path)
except Exception as err:
raise DiskError(f'Failed to install Limine in {self.target}{efi_partition.mountpoint}: {err}')
hook_command = (
f'/usr/bin/cp /usr/share/limine/BOOTIA32.EFI {efi_dir_path_target}/ && /usr/bin/cp /usr/share/limine/BOOTX64.EFI {efi_dir_path_target}/'
)
hook_command = ' && '.join(f'/usr/bin/cp /usr/share/limine/{file} {efi_dir_path_target}/' for file in efi_binaries)
if not bootloader_removable:
# Create EFI boot menu entry for Limine.
@ -1508,7 +1512,7 @@ class Installer:
raise OSError(f'Could not open or read /sys/firmware/efi/fw_platform_size to determine EFI bitness: {err}')
if efi_bitness == '64':
loader_path = '\\EFI\\arch-limine\\BOOTX64.EFI'
loader_path = f'\\EFI\\arch-limine\\{"BOOTAA64.EFI" if platform.machine() == "aarch64" else "BOOTX64.EFI"}'
elif efi_bitness == '32':
loader_path = '\\EFI\\arch-limine\\BOOTIA32.EFI'
else: