Unverified Commit 2b7e1b4a authored by Tallero Tallero's avatar Tallero Tallero
Browse files

Add support for GRUB ia32 UEFI in mkarchiso, update READMEs.

parent 4936978e
......@@ -17,6 +17,7 @@ The following packages need to be installed to be able to create an image with t
* e2fsprogs
* erofs-utils (optional)
* findutils
* grub
* gzip
* libarchive
* libisoburn
......
......@@ -39,6 +39,7 @@ airootfs_image_tool_options=()
cert_list=()
sign_netboot_artifacts=""
declare -A file_permissions=()
efiboot_files=()
# adapted from GRUB_EARLY_INITRD_LINUX_STOCK in https://git.savannah.gnu.org/cgit/grub.git/tree/util/grub-mkconfig.in
readonly ucodes=('intel-uc.img' 'intel-ucode.img' 'amd-uc.img' 'amd-ucode.img' 'early_ucode.cpio' 'microcode.cpio')
......@@ -516,6 +517,84 @@ _make_efibootimg() {
mmd -i "${work_dir}/efiboot.img" ::/EFI ::/EFI/BOOT
}
_make_bootmode_uefi-ia32.grub.esp() {
# Fill Grub configuration files
sed "s|%ARCHISO_LABEL%|${iso_label}|g;
s|%INSTALL_DIR%|${install_dir}|g;
s|%ARCH%|${arch}|g" \
"${profile}/grub/grub.cfg" > "${work_dir}/grub.cfg"
# shellcheck disable=SC2016
printf 'configfile ${cmdpath}/grub.cfg\n' > "${work_dir}/grub-embed.cfg"
# Create EFI file
grub-mkstandalone -O i386-efi \
--modules="part_gpt part_msdos fat iso9660" \
--locales="en@quot" \
--themes="" \
-o "${work_dir}/BOOTIA32.EFI" "boot/grub/grub.cfg=${work_dir}/grub-embed.cfg"
# Add GRUB to the list of files used to calculate the required FAT image size.
efiboot_files+=("${work_dir}/BOOTIA32.EFI"
"${pacstrap_dir}/usr/share/edk2-shell/ia32/Shell_Full.efi")
if [[ ! " ${bootmodes[*]} " =~ uefi-x64.systemd-boot.esp ]]; then
efiboot_files+=("${pacstrap_dir}/boot/vmlinuz-"*
"${pacstrap_dir}/boot/initramfs-"*".img")
efiboot_imgsize="$(du -bc "${efiboot_files[@]}" \
2>/dev/null | awk 'END { print $1 }')"
# Create a FAT image for the EFI system partition
_make_efibootimg "$efiboot_imgsize"
else
_run_once _make_bootmode_uefi-x64.systemd-boot.esp
fi
# Copy grub EFI binary to the default/fallback boot path
mcopy -i "${work_dir}/efiboot.img" \
"${work_dir}/BOOTIA32.EFI" ::/EFI/BOOT/BOOTIA32.EFI
# Copy GRUB configuration files
mcopy -i "${work_dir}/efiboot.img" \
"${work_dir}/grub.cfg" ::/EFI/BOOT/grub.cfg
# shellia32.efi is picked up automatically when on /
if [[ -e "${pacstrap_dir}/usr/share/edk2-shell/ia32/Shell_Full.efi" ]]; then
mcopy -i "${work_dir}/efiboot.img" \
"${pacstrap_dir}/usr/share/edk2-shell/ia32/Shell_Full.efi" ::/shellia32.efi
fi
_msg_info "Done! GRUB set up for UEFI booting successfully."
}
# Prepare GRUB for El Torito booting
_make_bootmode_uefi-ia32.grub.eltorito() {
# El Torito UEFI boot requires an image containing the EFI system partition.
# uefi-ia32.grub.eltorito has the same requirements as uefi-ia32.grub.esp
_run_once _make_bootmode_uefi-ia32.grub.esp
# Additionally set up system-boot in ISO 9660. This allows creating a medium for the live environment by using
# manual partitioning and simply copying the ISO 9660 file system contents.
# This is not related to El Torito booting and no firmware uses these files.
_msg_info "Preparing an /EFI directory for the ISO 9660 file system..."
install -d -m 0755 -- "${isofs_dir}/EFI/BOOT"
# Copy GRUB EFI binary to the default/fallback boot path
install -m 0644 -- "${work_dir}/BOOTIA32.EFI" \
"${isofs_dir}/EFI/BOOT/BOOTIA32.EFI"
# Copy GRUB configuration files
install -m 0644 -- "${work_dir}/grub.cfg" "${isofs_dir}/EFI/BOOT/grub.cfg"
# edk2-shell based UEFI shell
# shellia32.efi is picked up automatically when on /
if [[ -e "${pacstrap_dir}/usr/share/edk2-shell/ia32/Shell_Full.efi" ]]; then
install -m 0644 -- "${pacstrap_dir}/usr/share/edk2-shell/ia32/Shell_Full.efi" \
"${isofs_dir}/shellia32.efi"
fi
_msg_info "Done!"
}
# Prepare system-boot for booting when written to a disk (isohybrid)
_make_bootmode_uefi-x64.systemd-boot.esp() {
local _file efiboot_imgsize
......@@ -528,13 +607,13 @@ _make_bootmode_uefi-x64.systemd-boot.esp() {
fi
done
# Calculate the required FAT image size in bytes
efiboot_imgsize="$(du -bc \
"${pacstrap_dir}/usr/lib/systemd/boot/efi/systemd-bootx64.efi" \
"${pacstrap_dir}/usr/share/edk2-shell/x64/Shell_Full.efi" \
"${profile}/efiboot/" \
"${pacstrap_dir}/boot/vmlinuz-"* \
"${pacstrap_dir}/boot/initramfs-"*".img" \
"${_available_ucodes[@]}" \
efiboot_files+=("${pacstrap_dir}/usr/lib/systemd/boot/efi/systemd-bootx64.efi"
"${pacstrap_dir}/usr/share/edk2-shell/x64/Shell_Full.efi"
"${profile}/efiboot/"
"${pacstrap_dir}/boot/vmlinuz-"*
"${pacstrap_dir}/boot/initramfs-"*".img"
"${_available_ucodes[@]}")
efiboot_imgsize="$(du -bc "${efiboot_files[@]}" \
2>/dev/null | awk 'END { print $1 }')"
# Create a FAT image for the EFI system partition
_make_efibootimg "$efiboot_imgsize"
......@@ -689,6 +768,20 @@ _validate_requirements_bootmode_uefi-x64.systemd-boot.eltorito() {
_validate_requirements_bootmode_uefi-x64.systemd-boot.esp
}
_validate_requirements_bootmode_uefi-ia32.grub.esp() {
# Check if GRUB is available
if ! command -v grub-mkstandalone &> /dev/null; then
(( validation_error=validation_error+1 ))
_msg_error "Validating '${bootmode}': grub-install is not available on this host. Install 'grub'!" 0
fi
_validate_requirements_bootmode_uefi-x64.systemd-boot.esp
}
_validate_requirements_bootmode_uefi-ia32.grub.eltorito() {
# uefi-ia32.grub.eltorito has the exact same requirements as uefi-ia32.grub.esp
_validate_requirements_bootmode_uefi-ia32.grub.esp
}
# Build airootfs filesystem image
_prepare_airootfs_image() {
_run_once "_mkairootfs_${airootfs_image_type}"
......@@ -907,6 +1000,22 @@ _add_xorrisofs_options_bios.syslinux.mbr() {
)
}
# GRUB in an attached EFI system partition
_add_xorrisofs_options_uefi-ia32.grub.esp() {
# shellcheck disable=SC2076
if [[ ! " ${bootmodes[*]} " =~ ' uefi-x64.systemd-boot.esp ' ]]; then
_add_xorrisofs_options_uefi-x64.systemd-boot.esp
fi
}
# GRUB via El Torito
_add_xorrisofs_options_uefi-ia32.grub.eltorito() {
# shellcheck disable=SC2076
if [[ ! " ${bootmodes[*]} " =~ ' uefi-x64.systemd-boot.eltorito ' ]]; then
_add_xorrisofs_options_uefi-x64.systemd-boot.eltorito
fi
}
# systemd-boot in an attached EFI system partition
_add_xorrisofs_options_uefi-x64.systemd-boot.esp() {
# Move the first partition away from the start of the ISO, otherwise the GPT will not be valid and ISO 9660
......@@ -921,7 +1030,7 @@ _add_xorrisofs_options_uefi-x64.systemd-boot.esp() {
# A valid GPT prevents BIOS booting on some systems, instead use an invalid GPT (without a protective MBR).
# The attached partition will have the EFI system partition type code in MBR, but in the invalid GPT it will
# have a Microsoft basic partition type code.
if [[ ! " ${bootmodes[*]} " =~ ' uefi-x64.systemd-boot.eltorito ' ]]; then
if [[ ! " ${bootmodes[*]} " =~ ' uefi-x64.systemd-boot.eltorito ' && ! " ${bootmodes[*]} " =~ ' uefi-ia32.grub.eltorito ' ]]; then
# If '-isohybrid-gpt-basdat' is specified before '-e', then the appended EFI system partition will have the
# EFI system partition type ID/GUID in both MBR and GPT. If '-isohybrid-gpt-basdat' is specified after '-e',
# the appended EFI system partition will have the Microsoft basic data type GUID in GPT.
......@@ -938,7 +1047,7 @@ _add_xorrisofs_options_uefi-x64.systemd-boot.esp() {
# systemd-boot via El Torito
_add_xorrisofs_options_uefi-x64.systemd-boot.eltorito() {
# shellcheck disable=SC2076
if [[ " ${bootmodes[*]} " =~ ' uefi-x64.systemd-boot.esp ' ]]; then
if [[ " ${bootmodes[*]} " =~ ' uefi-x64.systemd-boot.esp ' || " ${bootmodes[*]} " =~ ' uefi-ia32.grub.esp ' ]]; then
# systemd-boot in an attached EFI system partition via El Torito
xorrisofs_options+=(
# Start a new El Torito boot entry for UEFI
......
......@@ -10,6 +10,7 @@ An archiso profile consists of several configuration files and a directory for f
├── airootfs/
├── efiboot/
├── syslinux/
├── grub/
├── bootstrap_packages.arch
├── packages.arch
├── pacman.conf
......@@ -45,6 +46,8 @@ The image file is constructed from some of the variables in ``profiledef.sh``: `
- ``bios.syslinux.mbr``: Syslinux for x86 BIOS booting from a disk
- ``bios.syslinux.eltorito``: Syslinux for x86 BIOS booting from an optical disc
- ``uefi-ia32.grub.esp``: GRUB for IA32 UEFI booting from a disk
- ``uefi-ia32.grub.eltorito``: GRUB for IA32 UEFI booting from an optical disc
- ``uefi-x64.systemd-boot.esp``: systemd-boot for x86_64 UEFI booting from a disk
- ``uefi-x64.systemd-boot.eltorito``: systemd-boot for x86_64 UEFI booting from an optical disc
Note that BIOS El Torito boot mode must always be listed before UEFI El Torito boot mode.
......@@ -158,6 +161,14 @@ This directory is mandatory when the ``bios.syslinux.mbr`` or the ``bios.syslinu
``profiledef.sh``.
It contains configuration files for `syslinux <https://wiki.syslinux.org/wiki/index.php?title=SYSLINUX>`_ or `isolinux
<https://wiki.syslinux.org/wiki/index.php?title=ISOLINUX>`_ , or `pxelinux
<https://wiki.syslinux.org/wiki/index.php?title=PXELINUX>`_ used in the resuling image.
<https://wiki.syslinux.org/wiki/index.php?title=PXELINUX>`_ used in the resulting image.
The *custom template identifiers* are understood in all `.cfg` files in this directory.
grub
----
This directory is mandatory when the ``uefi-ia32.grub.esp`` or ``uefi-ia32.grub.eltorito`` bootmodes are selected in
``profiledef.sh``.
It contains configuration files for `GRUB <https://www.gnu.org/software/grub/>`_
used in the resulting image.
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