Introduce mg-pxe-loader-update

The story for PXE booting via UEFI (at least on arm64) is not so
straightforward as with pxelinux on x86. There seems to no good
bootloader to launch via UEFI+pxe, in fact all I could find was grub
(syslinux, and by extension pxelinux.efi, is x86 only).

Add mg-pxe-loader-update modelled on mg-debian-installer-update which
will download the necessary grub binaries and produce a grub image
which can be used to pxe boot.

grub lacks the convenient ability to search for config file based on
(substrings of) the MAC or IP address. So we arrange for the grub.cfg
in TftpGrubBase to chain load another config file from
TftpTmpDir/'$net_default_mac' where $net_default_mac is a grub
variable which is substituted at boot time.

Actually using this requires that bootp/dhcp provide a next-file so
UEFI knows what to boot (usually this would be pxelinux.0 which we
can't use here). Locally we have configured this as $name/pxe.img, so
we can use different loaders.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
---
v4: Just mgi-common now that mgi-debian merged therein.
v3: Use mgi-common and mgi-debian

diff --git a/Osstest.pm b/Osstest.pm
index c89c941bec5ce0e5bd33f6a4c98f6b3a6b28a88c..142ea496ec4f569cd745aa474b4bb9413b543d99 100644 (file)
--- a/Osstest.pm
+++ b/Osstest.pm
@@ -200,6 +200,9 @@ sub readglobalconfig () {
     $c{TftpDiBase} ||= "$c{TftpPlayDir}debian-installer";
     $c{TftpDiVersion} ||= 'current';
 
+    $c{TftpGrubBase} ||= "$c{TftpPlayDir}grub";
+    $c{TftpGrubVersion} ||= 'current';
+
     $c{WebspaceFile} ||= "$ENV{'HOME'}/public_html/";
     $c{WebspaceUrl} ||= "http://$myfqdn/~$whoami/";
     $c{WebspaceCommon} ||= 'osstest/';

diff --git a/README b/README
index c3508a399640aa476b1fb2f98aaef5a5b8755e73..8e8205530cea7166ab7845e1b4a53f84971491dd 100644 (file)
--- a/README
+++ b/README
@@ -206,7 +206,9 @@ To run osstest in standalone mode:
      netcat
      chiark-utils-bin
 
- - Optional: ipmitool
+ - Optional:
+     ipmitool -- for hosts which use IPMI for power control
+     grub-common -- for mg-pxe-loader-update
 
  - Write a config file
     ~/.xen-osstest/config

diff --git a/mg-pxe-loader-update b/mg-pxe-loader-update
new file mode 100755 (executable)
index 0000000..386e449
--- /dev/null
+++ b/mg-pxe-loader-update
@@ -0,0 +1,84 @@
+#!/bin/bash
+# usage
+#   ./mg-pxe-loader-update jessie
+#
+# Requires grub-mkimage (Debian package: grub-common)
+
+# This is part of "osstest", an automated testing framework for Xen.
+# Copyright (C) 2015 Citrix Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+set -e
+
+. cri-getconfig
+. mgi-common
+
+suite=$1
+
+site=http://ftp.debian.org/debian/
+sbase=$site/dists/$suite
+
+archs="amd64 i386 arm64"
+
+dstroot=`getconfig TftpPath`/`getconfig TftpGrubBase`/
+date=`date +%Y-%m-%d`
+dst=$date
+
+grubpfx=`getconfig TftpGrubBase`/$date/grub
+grubcfg=`getconfig TftpTmpDir`/grub.cfg-'$net_default_mac'
+
+mkdir -p $dstroot
+cd $dstroot
+mkdir -p $dst
+cd $dst
+rm -rf grub
+mkdir grub
+
+cat >grub/grub.cfg <<EOF
+set stage1=yes
+configfile $grubcfg
+EOF
+for arch in $archs ; do
+    case $arch in
+       amd64) grubdeb=grub-efi-amd64-bin; platform=x86_64-efi;;
+       i386)  grubdeb=grub-efi-ia32-bin;  platform=i386-efi;;
+       arm64) grubdeb=grub-efi-arm64-bin; platform=arm64-efi;;
+       *) echo "No grub on $arch" >&2; exit 0;;
+    esac
+
+    pfile=$sbase/main/binary-$arch/Packages.gz
+
+    fetch $pfile >Packages.gz
+
+    echo >&2 "collecting $grubdeb"
+    fetch_debian_package $site Packages.gz -PX $grubdeb >$grubdeb.deb
+
+    dpkg-deb -x $grubdeb.deb x
+
+    mv x/usr/lib/grub/* grub/
+
+    rm -rf x
+
+    rm Packages.gz
+
+    grub-mkimage -O "$platform" \
+                -d ./grub/$platform \
+                -o pxegrub-$arch.efi -p "$grubpfx" \
+                search configfile normal efinet tftp net
+done
+
+echo $date
+echo >&2 "downloaded $dstroot/$date"

diff --git a/production-config b/production-config
index 50466ceda09659993c4f04d4de564823f4f89ed1..0a528e7524c996462df26af9aabfb0a31e8cb4bd 100644 (file)
--- a/production-config
+++ b/production-config
@@ -82,12 +82,17 @@ TftpPxeTemplates %name%/pxelinux.cfg
 TftpPxeTemplatesReal pxelinux.cfg/%ipaddrhex%
 
 TftpPxeGroup osstest
+# Update with ./mg-debian-installer-update(-all)
 TftpDiVersion 2015-06-23
 
 # These should normally be the same.
+# Update with ./mg-cpu-microcode-update
 MicrocodeUpdateAmd64 microcode.x86.2015-06-12.cpio
 MicrocodeUpdateI386 microcode.x86.2015-06-12.cpio
 
+# Update with ./mg-pxe-loader-update
+TftpGrubVersion XXXX-XX-XX
+
 XenUsePath /usr/groups/xencore/systems/bin/xenuse
 XenUseUser osstest