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Reuse Secure Boot EFI variables image prepared by Gentoo

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Rather than starting with a blank image, reuse the image that already
has the Microsoft certificates and the latest DBX revocation list
applied. Gentoo also applies the Red Hat certificates, which we don't
need, but this is okay.

Signed-off-by: James Le Cuirot <jlecuirot@microsoft.com>
This commit is contained in:
James Le Cuirot 2024-10-02 17:59:29 +01:00 committed by Sayan Chowdhury
parent 7bfec7e6eb
commit 4a634cfb36
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GPG Key ID: B02399319CD05C8B
1 changed files with 6 additions and 3 deletions
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9
build_library/vm_image_util.sh
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@ -856,24 +856,27 @@ _write_qemu_uefi_secure_conf() {
local flash_ro="$(_dst_name "_efi_code.qcow2")"
local script="$(_dst_dir)/$(_dst_name ".sh")"
local owner="00000000-0000-0000-0000-000000000000"
local flash_in
_write_qemu_uefi_conf
case $BOARD in
amd64-usr)
cp "/usr/share/edk2/OvmfX64/OVMF_CODE_4M.secboot.qcow2" "$(_dst_dir)/${flash_ro}"
flash_in="/usr/share/edk2/OvmfX64/OVMF_VARS_4M.secboot.qcow2"
;;
arm64-usr)
cp "/usr/share/edk2/ArmVirtQemu-AARCH64/QEMU_EFI.secboot_INSECURE.qcow2" "$(_dst_dir)/${flash_ro}"
flash_in="/usr/share/edk2/ArmVirtQemu-AARCH64/QEMU_VARS.secboot_INSECURE.qcow2"
;;
esac
virt-fw-vars \
--inplace "$(_dst_dir)/${flash_rw}" \
--input "${flash_in}" \
--output "$(_dst_dir)/${flash_rw}" \
--set-pk "${owner}" /usr/share/sb_keys/PK.crt \
--add-kek "${owner}" /usr/share/sb_keys/KEK.crt \
--add-db "${owner}" /usr/share/sb_keys/DB.crt \
--secure-boot --no-microsoft
--add-db "${owner}" /usr/share/sb_keys/DB.crt
sed -e "s%^SECURE_BOOT=.*%SECURE_BOOT=1%" -i "${script}"
}