Produce a tarball of artifacts for netbooting during live-server build.

debian/changelog

@@ -3,6 +3,7 @@ livecd-rootfs (2.765) UNRELEASED; urgency=medium
   * auto/config: preserve germinate-output directory when removing config to
     speed up local iteration.
   * auto/config: Emit error message to stderr in _sanitize_passes.
+  * Produce a tarball of artifacts for netbooting during live-server build.
 
  -- Michael Hudson-Doyle <michael.hudson@ubuntu.com>  Tue, 24 May 2022 12:42:10 +1200
 

live-build/auto/config

@@ -874,6 +874,18 @@ case $PROJECT in
 					add_package ubuntu-server-minimal.ubuntu-server.installer.$flavor $kernel_metapkg
 					LIVE_PASSES="${LIVE_PASSES:+$LIVE_PASSES }ubuntu-server-minimal.ubuntu-server.installer.$flavor"
 				done
+				case $ARCH in
+					amd64)
+						add_package ubuntu-server-minimal.ubuntu-server.installer.generic.netboot grub-pc shim-signed pxelinux
+						;;
+					arm64)
+						add_package ubuntu-server-minimal.ubuntu-server.installer.generic.netboot shim-signed
+						;;
+					*)
+						add_package ubuntu-server-minimal.ubuntu-server.installer.generic.netboot
+						;;
+				esac
+				NO_SQUASHFS_PASSES=ubuntu-server-minimal.ubuntu-server.installer.generic.netboot
 
 				/usr/share/livecd-rootfs/checkout-translations-branch \
 					https://git.launchpad.net/subiquity po config/catalog-translations

live-build/ubuntu-server/hooks/03-kernel-metapkg.chroot_early

@@ -2,6 +2,9 @@
 # vi: ts=4 noexpandtab
 
 case $PASS in
+    ubuntu-server-minimal.ubuntu-server.installer.*.*)
+        exit 0
+        ;;
     ubuntu-server-minimal.ubuntu-server.installer.*)
         flavor=${PASS##*.}
         if [ "$flavor" = "generic" ]; then

live-build/ubuntu-server/hooks/04-kernel-bits.binary

@@ -2,6 +2,9 @@
 # vi: ts=4 noexpandtab
 
 case $PASS in
+    ubuntu-server-minimal.ubuntu-server.installer.*.*)
+        exit 0
+        ;;
     ubuntu-server-minimal.ubuntu-server.installer.*)
         flavor=${PASS##*.}
         ;;

live-build/ubuntu-server/hooks/05-netboot-tarball.binary

@@ -0,0 +1,117 @@
+#!/bin/sh
+
+case $PASS in
+    ubuntu-server-minimal.ubuntu-server.installer.generic.netboot)
+        ;;
+    *)
+        exit 0
+        ;;
+esac
+
+set -eux
+
+flavor=generic
+
+KERNEL=${PWD}/livecd.${PROJECT}.kernel-$flavor
+INITRD=${PWD}/livecd.${PROJECT}.initrd-$flavor
+
+mkdir -p tarball/$ARCH
+
+case $ARCH in
+    s390x)
+        cp $INITRD tarball/$ARCH/initrd.ubuntu
+        cp $KERNEL tarball/$ARCH/kernel.ubuntu
+        ;;
+
+    *)
+        cp $INITRD tarball/$ARCH/initrd
+        cp $KERNEL tarball/$ARCH/kernel
+        ;;
+esac
+
+case $ARCH in
+    amd64)
+        mv chroot/usr/lib/PXELINUX/pxelinux.0                          tarball/pxelinux.0
+        mv chroot/usr/lib/syslinux/modules/bios/ldlinux.c32            tarball/ldlinux.c32
+        mv chroot/usr/lib/shim/shimx64.efi                             tarball/bootx64.efi
+        mv chroot/usr/lib/grub/x86_64-efi-signed/grubnetx64.efi.signed tarball/grubx64.efi
+
+        mkdir tarball/x86_64-efi tarball/pxelinux.cfg
+        cat > tarball/x86_64-efi/grub.cfg.in <<EOF
+menuentry "Install Ubuntu Server" {
+        set gfxpayload=keep
+        linux   amd64/linux url=#ISOURL# ip=dhcp ---
+        initrd  amd64/initrd
+}
+EOF
+        cat > tarball/pxelinux.cfg/default.in <<EOF
+DEFAULT install
+LABEL install
+  KERNEL amd64/linux
+  INITRD amd64/initrd
+  APPEND root=/dev/ram0 ramdisk_size=1500000 ip=dhcp url=#ISOURL# ---
+EOF
+        ;;
+
+    arm64)
+        mv chroot/usr/lib/shim/shimaa64.efi                            tarball/bootaa64.efi
+        mv chroot/usr/lib/grub/arm64-efi-signed/grubnetaa64.efi.signed tarball/grubaa64.efi
+
+        mkdir tarball/arm64-efi
+        cat > tarball/arm64-efi/grub.cfg.in <<EOF
+menuentry "Install Ubuntu Server" {
+        set gfxpayload=keep
+        linux   arm64/linux url=#ISOURL# ip=dhcp ---
+        initrd  arm64/initrd
+}
+EOF
+        ;;
+
+    s390x)
+        cat > tarball/s390x/ubuntu.exec <<EOF
+/* REXX EXEC TO IPL Ubuntu for        */
+/* z Systems FROM THE VM READER.      */
+/*                                    */
+'CP CLOSE RDR'
+'PURGE RDR ALL'
+'SPOOL PUNCH * RDR'
+'PUNCH KERNEL    UBUNTU   * (NOHEADER'
+'PUNCH PARMFILE  UBUNTU   * (NOHEADER'
+'PUNCH INITRD    UBUNTU   * (NOHEADER'
+'CHANGE RDR ALL KEEP NOHOLD'
+'CP IPL 000C CLEAR'
+EOF
+        cat > tarball/s390x/ubuntu.ins <<EOF
+* Ubuntu for IBM Z (default kernel)
+kernel.ubuntu 0x00000000
+initrd.off 0x0001040c
+initrd.siz 0x00010414
+parmfile.ubuntu 0x00010480
+initrd.ubuntu 0x01000000
+EOF
+        cat > tarball/s390x/parmfile.ubuntu.in <<EOF
+url=#ISOURL# ---
+EOF
+        perl -e "print pack('N', 0x1000000)" > tarball/s390x/initrd.off
+        perl -e "print pack('N', -s 'tarball/s390x/initrd.ubuntu')" > tarball/s390x/initrd.siz
+        cat > tarball/s390x-kvm.cfg.in <<EOF
+DEFAULT install
+LABEL install
+  KERNEL amd64/linux.ubuntu
+  INITRD amd64/initrd.ubuntu
+  APPEND ip=dhcp url=#ISOURL# ---
+EOF
+        cat > tarball/dpm.cfg.in <<EOF
+PROMPT 1
+DEFAULT install
+TIMEOUT 1
+LABEL install
+  kernel=amd64/linux.ubuntu
+  initrd=amd64/initrd.ubuntu
+  append=ip=dhcp url=#ISOURL# ---
+EOF
+        ;;
+esac
+
+tar -C tarball -czf livecd.${PROJECT}.netboot.tar.gz .
+rm -rf tarball