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Enable support for 32bit UEFI systems with Grub

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Read the UEFI bitness exposed to the file system and install the correct
variant of Grub, depending on the UEFI bitness.
This commit is contained in:
JoernSchoenyan 2016-03-15 13:11:25 +01:00
parent 64772d67c9
commit 7e8129a902
1 changed files with 10 additions and 1 deletions
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11
src/modules/bootloader/main.py
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@ -176,7 +176,16 @@ def install_grub(efi_directory, fw_type):
distribution = branding["bootloaderEntryName"]
file_name_sanitizer = str.maketrans(" /", "_-")
efi_bootloader_id = distribution.translate(file_name_sanitizer)
check_target_env_call([libcalamares.job.configuration["grubInstall"], "--target=x86_64-efi",
# get bitness of the underlying UEFI
try:
f = open("/sys/firmware/efi/fw_platform_size", "r")
efi_bitness = f.read(2)
except:
# if the kernel is older than 4.0, the UEFI bitness likely isn't exposed to the userspace
# so we assume a 64 bit UEFI here
efi_bitness = "64"
bitness_translate = {"32": "--target=i386-efi", "64": "--target=x86_64-efi"}
check_target_env_call([libcalamares.job.configuration["grubInstall"], bitness_translate[efi_bitness],
"--efi-directory={!s}".format(efi_directory),
"--bootloader-id={!s}".format(efi_bootloader_id),
"--force"])