ovmf/gen-key-enrollment-iso.sh

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3.0 KiB
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#!/bin/bash -e
# The script to generate the key enrollment iso file
# based on build_iso() in https://git.kraxel.org/cgit/jenkins/edk2/tree/edk2.git.spec
# Example: $0 X64 Shell.efi EnrollDefaultKeys.efi default key.iso
usage()
{
PROG_NAME=$1
echo "Usage: $PROG_NAME <Arch> <Shell> <Enroller> <Type> <ISO NAME>"
echo "ex: $PROG_NAME X64 Shell.efi EnrollDefaultKeys.efi default key.iso"
}
ARCH=$(echo $1 | tr '[:lower:'] '[:upper:]')
UEFI_SHELL_BINARY="$2"
ENROLLER_BINARY="$3"
TYPE="$4"
ISO_NAME="$5"
# Check the arguments
if [ x$ARCH != xX64 ] && [ x$ARCH != xAARCH64 ]; then
echo "Supported architecture: X64, AARCH64"
usage $0
exit 1
fi
if [ x$UEFI_SHELL_BINARY == x ] || [ ! -e "$UEFI_SHELL_BINARY" ]; then
echo "Please specify the UEFI shell binary"
usage $0
exit 1
fi
if [ x$ENROLLER_BINARY == x ] || [ ! -e "$ENROLLER_BINARY" ]; then
echo "Please specify the enroller binary"
usage $0
exit 1
fi
if [ x$TYPE == x ]; then
echo "Please specify the type of image: default or no-default"
usage $0
exit 1
fi
if [ x$ISO_NAME == x ]; then
echo "Please specify the name of output iso"
usage $0
exit 1
fi
ISO_PATH=$(realpath $ISO_NAME)
TMP_DIR=$(mktemp -d)
cp $UEFI_SHELL_BINARY $TMP_DIR/Shell.efi
cp $ENROLLER_BINARY $TMP_DIR/EnrollDefaultKeys.efi
UEFI_BOOT_EFI=$(
if [ $ARCH == "X64" ]; then
echo bootx64.efi
elif [ $ARCH == "AARCH64" ]; then
echo bootaa64.efi
else
exit 1
fi
)
UEFI_SHELL_SIZE=$(stat --format=%s -- "$UEFI_SHELL_BINARY")
ENROLLER_SIZE=$(stat --format=%s -- "$ENROLLER_BINARY")
START_SCRIPT=$TMP_DIR/"startup.nsh"
# Enter the first ESP
echo "fs0:" > $START_SCRIPT
# Enroll the keys
if [ $TYPE == "default" ]; then
echo "EnrollDefaultKeys.efi" >> $START_SCRIPT
else
echo "EnrollDefaultKeys.efi --no-default" >> $START_SCRIPT
fi
# Reset BootOrder
echo "setvar BootOrder -guid 8be4df61-93ca-11d2-aa0d-00e098032b8c -bs -rt -nv =" >> $START_SCRIPT
# Shutdown the system
echo "reset -s" >> $START_SCRIPT
UEFI_SHELL_IMAGE=uefi_shell_${ARCH}_${TYPE}.img
# Add 1MB then 10% for metadata
UEFI_SHELL_IMAGE_KB=$((
(UEFI_SHELL_SIZE + ENROLLER_SIZE +
1 * 1024 * 1024) * 11 / 10 / 1024
))
pushd $TMP_DIR
# Create non-partitioned FAT image
rm -f -- "$UEFI_SHELL_IMAGE"
/usr/sbin/mkdosfs -C "$UEFI_SHELL_IMAGE" -n UEFI_SHELL -- "$UEFI_SHELL_IMAGE_KB"
export MTOOLS_SKIP_CHECK=1
mmd -i "$UEFI_SHELL_IMAGE" ::efi
mmd -i "$UEFI_SHELL_IMAGE" ::efi/boot
mcopy -i "$UEFI_SHELL_IMAGE" Shell.efi ::efi/boot/$UEFI_BOOT_EFI
mcopy -i "$UEFI_SHELL_IMAGE" "$START_SCRIPT" ::efi/boot/startup.nsh
mcopy -i "$UEFI_SHELL_IMAGE" EnrollDefaultKeys.efi ::EnrollDefaultKeys.efi
mdir -i "$UEFI_SHELL_IMAGE" -/ ::
# build ISO with FAT image file as El Torito EFI boot image
mkisofs -input-charset ASCII -J -rational-rock \
-eltorito-platform efi -eltorito-boot "$UEFI_SHELL_IMAGE" \
-no-emul-boot -o "$ISO_PATH" -- "$UEFI_SHELL_IMAGE"
popd
#rm -rf $TMP_DIR