Merge remote-tracking branch 'origin/merge-requests/216'

* origin/merge-requests/216:
  Update CHANGELOG.
  Update baseline and releng profiledef.sh to support ia32 uefi mode.
  Add GRUB configuration files to baseline and releng profiles.
  Add support for GRUB ia32 UEFI in mkarchiso, update READMEs.

Closes #107

See merge request !216

1 files changed, 118 insertions, 9 deletions

diff --git a/archiso/mkarchiso b/archiso/mkarchiso
index f6b3395..3e0a86f 100755
--- a/archiso/mkarchiso
+++ b/archiso/mkarchiso
@@ -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