app-emulation/grub-xen-host/grub-xen-host-1.0.ebuild

   1 # Copyright 1999-2019 Gentoo Authors
   2 # Distributed under the terms of the GNU General Public License v2
   3
   4 EAPI=5
   5
   6 DESCRIPTION="Grub2 built as a PV grub per the Xen PV Boot Protocol"
   7 HOMEPAGE="https://blog.xenproject.org/2015/01/07/using-grub-2-as-a-bootloader-for-xen-pv-guests/"
   8 SRC_URI=""
   9
  10 LICENSE="BSD-2"
  11 SLOT="0"
  12 KEYWORDS="amd64"
  13 IUSE=""
  14
  15 DEPEND="sys-boot/grub:2=[grub_platforms_xen]
  16         app-emulation/xen-tools:="
  17 RDEPEND="${DEPEND}"
  18
  19 S="${WORKDIR}"
  20
  21 RESTRICT="binchecks strip test"
  22
  23 src_configure() {
  24         :
  25 }
  26
  27 src_compile() {
  28         cat > "${S}/grub-bootstrap.cfg" <<- EOF || die
  29                 normal (memdisk)/grub.cfg
  30         EOF
  31
  32         cat > "${S}/grub.cfg" <<- EOF || die
  33                 if search -s -f /boot/xen/pvboot-x86_64.elf ; then
  34                         echo "Chainloading (${root})/boot/xen/pvboot-x86_64.elf"
  35                         multiboot "/boot/xen/pvboot-x86_64.elf"
  36                         boot
  37                 fi
  38
  39                 if search -s -f /xen/pvboot-x86_64.elf ; then
  40                         echo "Chainloading (${root})/xen/pvboot-x86_64.elf"
  41                         multiboot "/xen/pvboot-x86_64.elf"
  42                         boot
  43                 fi
  44
  45                 if search -s -f /boot/grub/grub.cfg ; then
  46                         echo "Reading (${root})/boot/grub/grub.cfg"
  47                         configfile /boot/grub/grub.cfg
  48                 fi
  49
  50                 if search -s -f /grub/grub.cfg ; then
  51                         echo "Reading (${root})/grub/grub.cfg"
  52                         configfile /grub/grub.cfg
  53                 fi
  54         EOF
  55
  56         tar cf memdisk.tar grub.cfg || die "failed to tar"
  57
  58         local grub_mkimage=grub-mkimage
  59         if type grub2-mkimage &> /dev/null; then
  60                 grub_mkimage=grub2-mkimage
  61         fi
  62
  63         local args=(
  64                 "${grub_mkimage}"
  65                 -O x86_64-xen
  66                 -c grub-bootstrap.cfg
  67                 -m memdisk.tar
  68                 -o grub-x86_64-xen.bin
  69                 /usr/lib/grub/x86_64-xen/*.mod
  70         )
  71
  72         echo "${args[@]}"
  73         "${args[@]}" || die "failed to grub-mkimage"
  74 }
  75
  76 src_install() {
  77         exeinto /usr/libexec/xen/bin
  78         doexe grub-x86_64-xen.bin
  79 }