Add hooks for a script to update kernel configuration after tree has been

prepared. This is to support upstream sources which do not enable Xen in their
default configurations.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/buildconfigs/enable-xen-config b/buildconfigs/enable-xen-config
new file mode 100644
index 0000000000..b427a12d90
--- /dev/null
+++ b/buildconfigs/enable-xen-config
@@ -0,0 +1,36 @@
+#!/bin/sh
+
+set -ex
+
+if [ $# -ne 1 ] ; then
+	echo "Usage $(basename $0) <config-file>" 1>&2
+	exit 1
+fi
+
+CONFIG=$1
+
+setopt()
+{
+	OPTION=$1
+	VALUE=$2
+
+	# First remove any existing instances of this option
+	sed -e "s/^# ${OPTION} is not set$//g ; s/^^{OPTION}=.$//g" -i "${CONFIG}"
+
+	# Then append the new value
+	case ${VALUE} in
+	    y|m) echo "${OPTION}=${VALUE}" >> "${CONFIG}" ;;
+	    n)   echo "# ${OPTION} is not set" >> "${CONFIG}" ;;
+	    *)   echo "Invalid value ${VALUE} for ${OPTION}" 1>&2 ; exit 1 ;;
+	esac
+}
+
+setopt CONFIG_PARAVIRT y
+setopt CONFIG_XEN y
+setopt CONFIG_VMI y
+setopt CONFIG_LGUEST n
+setopt CONFIG_XEN_BLKDEV_FRONTEND y
+setopt CONFIG_XEN_NETDEV_FRONTEND y
+setopt CONFIG_HVC_XEN y
+
+exit 0