[Merge] ~mwhudson/livecd-rootfs/+git/livecd-rootfs:netboot-tarball into livecd-rootfs:ubuntu/master

[Michael Hudson-Doyle]

Thanks for the review!

Diff comments:

> diff --git a/live-build/ubuntu-server/hooks/05-netboot-tarball.binary b/live-build/ubuntu-server/hooks/05-netboot-tarball.binary
> new file mode 100755
> index 0000000..5eafdcf
> --- /dev/null
> +++ b/live-build/ubuntu-server/hooks/05-netboot-tarball.binary
> @@ -0,0 +1,118 @@
> +#!/bin/sh
> +
> +case $PASS in
> +    ubuntu-server-minimal.ubuntu-server.installer.generic.netboot)
> +        ;;
> +    *)
> +        exit 0
> +        ;;
> +esac
> +
> +set -eux
> +
> +flavor=generic

Well it's not completely clear indeed. One idea I had was to include both, and generate bootloader configs that will offer both options in a menu and default to the generic after a short delay, which would make it easy for users to change the default to the hwe kernel if that's what they want.

> +
> +KERNEL=${PWD}/livecd.${PROJECT}.kernel-$flavor
> +INITRD=${PWD}/livecd.${PROJECT}.initrd-$flavor
> +
> +mkdir tarball
> +mkdir tarball/$ARCH

Sure, I guess that works.

> +
> +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


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