[coreboot-gerrit] Patch set updated for coreboot: 411d4b5 util: Add miniconfig, a script to minimize coreboot configurations
Stefan Reinauer (stefan.reinauer@coreboot.org)
gerrit at coreboot.org
Tue Mar 24 22:29:46 CET 2015
Stefan Reinauer (stefan.reinauer at coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8974
-gerrit
commit 411d4b586812a3e2fdd5f3040f9e983335e00441
Author: Stefan Reinauer <stefan.reinauer at coreboot.org>
Date: Tue Mar 24 21:46:52 2015 +0100
util: Add miniconfig, a script to minimize coreboot configurations
This script produces a "minimal" configuration from a full coreboot
configuration, e.g. a configuration file that only contains the differences
between the default configuration of a board and the input configuration
file.
Usage: util/kconfig/miniconfig config.big config.mini
This will read config.big and produce config.mini. If you omit config.mini,
config.big will be changed in place.
Minimal configurations are easier to read and more robust when reusing
them among different versions of coreboot as they reflect exactly the
changes made to the default configuration instead of a full snapshot
of all configuration options.
Change-Id: Ifbee49e0192c2c557b18bcc1a92fe2a5d5164a3a
Signed-off-by: Stefan Reinauer <stefan.reinauer at coreboot.org>
---
util/kconfig/miniconfig | 85 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 85 insertions(+)
diff --git a/util/kconfig/miniconfig b/util/kconfig/miniconfig
new file mode 100755
index 0000000..e88a54f
--- /dev/null
+++ b/util/kconfig/miniconfig
@@ -0,0 +1,85 @@
+#!/bin/bash
+#
+# miniconfig - utility to minimize your coreboot config files
+#
+# Copyright 2015 Google Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# 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 General Public License for more details.
+#
+
+CONFIG=$1
+NEWCONFIG=$2
+
+CONF=build/util/kconfig/conf
+KCONFIG=src/Kconfig
+DOTCONFIG=.config
+PREVCONFIG=.config.prev
+TMPCONFIG=.config.mini
+
+recreate_config()
+{
+ $CONF --olddefconfig $KCONFIG &> /dev/null
+}
+
+if [ "$CONFIG" == "" ]; then
+ printf "usage: util/miniconfig/miniconfig [path to config file] <path to new config file>\n"
+ exit 0
+fi
+
+if [ ! -r $CONFIG ]; then
+ printf "Can't read $CONFIG.\n"
+ exit 1
+fi
+
+
+if [ $CONFIG == .config ]; then
+ printf "Can't use .config, it's overwritten. Make a backup.\n"
+ exit 1
+fi
+
+if [ ! -x $CONF ]; then
+ printf "conf utility at $CONF not available.\n"
+ exit 1
+fi
+
+VENDOR=$( grep ^CONFIG_VENDOR $CONFIG | cut -f1 -d= )
+BOARD=$( grep ^CONFIG_BOARD $CONFIG | grep -v ROMSIZE | grep -v SPECIFIC_OPTIONS | cut -f1 -d= )
+
+printf "$VENDOR=y\n$BOARD=y\n" > $TMPCONFIG
+
+cp $TMPCONFIG $DOTCONFIG
+recreate_config
+
+LINES=$( cat $CONFIG | wc -l )
+CUR=1
+
+cat $CONFIG | while read L; do
+ printf "\rProcessing $CONFIG - $CUR / $LINES (%d%%)" $(( $CUR * 100 / $LINES))
+ mv $DOTCONFIG $PREVCONFIG
+ cp $TMPCONFIG $DOTCONFIG
+ echo "$L" >> $DOTCONFIG
+ recreate_config
+
+ if ! diff -q $DOTCONFIG $PREVCONFIG > /dev/null; then
+ echo "$L" >> $TMPCONFIG
+ fi
+ CUR=$(( $CUR + 1 ))
+done
+
+echo
+
+if [ "$NEWCONFIG" != "" ]; then
+ printf "Writing new, minimized config to $NEWCONFIG\n"
+ mv $TMPCONFIG $NEWCONFIG
+else
+ printf "Overwriting $CONFIG with new, minimized config.\n"
+ mv $TMPCONFIG $CONFIG
+fi
+
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