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Put full filesystem on EFI ISO

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In line with BIOS ISO changes previously.

Remove boot options, user can add if required, they made boot very slow.

Signed-off-by: Justin Cormack <justin.cormack@docker.com>
This commit is contained in:
Justin Cormack 2017-08-04 20:56:37 +01:00
parent 2a26a68aff
commit fdc4eb7c32
1 changed files with 18 additions and 20 deletions
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38
tools/mkimage-iso-efi/make-efi
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@ -5,49 +5,47 @@ set -e
mkdir -p /tmp/efi mkdir -p /tmp/efi
cd /tmp/efi cd /tmp/efi
# input is a tarball of kernel and initrd.img on stdin # input is a tarball on stdin with kernel and cmdline in /boot
# output is an iso on stdout # output is an iso on stdout
# extract. BSD tar auto recognises compression, unlike GNU tar # extract. BSD tar auto recognises compression, unlike GNU tar
# only if stdin is a tty, if so need files volume mounted... # only if stdin is a tty, if so need files volume mounted...
[ -t 0 ] || bsdtar xzf - [ -t 0 ] || bsdtar xzf -
INITRD="$(find . -name '*.img')" CMDLINE="$(cat boot/cmdline)"
KERNEL="$(find . -name kernel -or -name bzImage)" # if no root= root device specified, assume /dev/sr0 ie first CD drive
CMDLINE="$*" echo "${CMDLINE}" | grep -q 'root=' || CMDLINE="${CMDLINE} root=/dev/sr0"
rm boot/cmdline
[ "$KERNEL" = "./kernel" ] || mv "$KERNEL" kernel # Create a EFI boot file with kernel. From:
[ "$INITRD" = "./initrd.img" ] || mv "$INITRD" initrd.img
# clean up subdirectories
find . -mindepth 1 -maxdepth 1 -type d | xargs rm -rf
# Create a EFI boot file with kernel and initrd. From:
# https://github.com/haraldh/mkrescue-uefi/blob/master/mkrescue-uefi.sh # https://github.com/haraldh/mkrescue-uefi/blob/master/mkrescue-uefi.sh
cp /usr/lib/gummiboot/linuxx64.efi.stub . cp /usr/lib/gummiboot/linuxx64.efi.stub .
echo "${CMDLINE} rootdelay=300 noautodetect" > cmdline.txt echo "${CMDLINE}" > cmdline.txt
objcopy \ objcopy \
--add-section .osrel=/etc/os-release --change-section-vma .osrel=0x20000 \ --add-section .osrel=/etc/os-release --change-section-vma .osrel=0x20000 \
--add-section .cmdline=./cmdline.txt --change-section-vma .cmdline=0x30000 \ --add-section .cmdline=./cmdline.txt --change-section-vma .cmdline=0x30000 \
--add-section .linux=./kernel --change-section-vma .linux=0x40000 \ --add-section .linux=./boot/kernel --change-section-vma .linux=0x40000 \
--add-section .initrd=./initrd.img --change-section-vma .initrd=0x3000000 \
./linuxx64.efi.stub \ ./linuxx64.efi.stub \
linuxkit.efi linuxkit.efi
rm cmdline.txt
# create a ISO with a EFI boot partition # create a ISO with a EFI boot partition
mkdir -p iso
# Stuff it into a FAT filesystem, making it as small as possible. 511KiB # Stuff it into a FAT filesystem, making it as small as possible. 511KiB
# headroom seems to be enough; (x+31)/32*32 rounds up to multiple of 32. # headroom seems to be enough; (x+31)/32*32 rounds up to multiple of 32.
mkfs.vfat -v -C iso/efi.raw \ mkfs.vfat -v -C boot/efi.raw \
$(( ($(stat -c %s "linuxkit.efi") / 1024 + 511) \ $(( ($(stat -c %s "linuxkit.efi") / 1024 + 511) \
/ 32 * 32 )) > /dev/null / 32 * 32 )) > /dev/null
echo "mtools_skip_check=1" >> /etc/mtools.conf && \ echo "mtools_skip_check=1" >> /etc/mtools.conf && \
mmd -i iso/efi.raw ::/EFI mmd -i boot/efi.raw ::/EFI
mmd -i iso/efi.raw ::/EFI/BOOT mmd -i boot/efi.raw ::/EFI/BOOT
mcopy -i iso/efi.raw linuxkit.efi ::/EFI/BOOT/BOOTX64.EFI mcopy -i boot/efi.raw linuxkit.efi ::/EFI/BOOT/BOOTX64.EFI
rm linuxkit.efi linuxx64.efi.stub
xorriso -as mkisofs \ xorriso -as mkisofs \
-R -f -e efi.raw -no-emul-boot -o linuxkit-efi.iso iso -R -e boot/efi.raw -no-emul-boot -o linuxkit-efi.iso .
cat linuxkit-efi.iso cat linuxkit-efi.iso