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infix/utils/kernel-refresh.sh

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#!/bin/sh
KDIR=$1
KTAG=$2
PDIR=$3
usage()
{
cat <<EOF
usage: $0 <kernel-dir> [<kernel-tag>] [<patch-dir>]
Synchronize patches directory with changes from a GIT versioned kernel
tree.
<kernel-dir> Path to kernel tree.
<kernel-tag> Base tag from which to generate patches. Default: "v"
followed by the value of BR2_LINUX_KERNEL_VERSION in
the current configuration.
<patch-dir> Path to kernel patches directory. Default: the value of
BR2_EXTERNAL_INFIX_PATH in the current configuration,
followed by "/patches/linux".
EOF
}
getconfig()
{
[ -f .config ] || return 1
grep "$1=" .config | sed -e "s/$1=\"\([^\"]\+\)\"/\1/"
}
if [ $# -lt 1 ]; then
usage
exit 1
fi
if ! [ "$KTAG" ]; then
ixkver=$(getconfig BR2_LINUX_KERNEL_VERSION)
[ "$ixkver" ] && KTAG="v$ixkver"
fi
if ! [ "$KTAG" ]; then
echo "Kernel tag was not supplied, and could not be inferred" >&2
usage
exit 1
fi
if ! [ "$PDIR" ]; then
ixdir=$(getconfig BR2_EXTERNAL_INFIX_PATH)
[ "$ixdir" ] && PDIR="$ixdir/patches/linux"
fi
if ! [ "$PDIR" ]; then
echo "Patch directory was not supplied, and could not be inferred" >&2
usage
exit 1
fi
git -C $PDIR rm *.patch
git -C $KDIR format-patch -o $PDIR $KTAG..HEAD
git -C $PDIR add *.patch