it compiles/works, but the configuration isn't correct

core/uboot-env/PKGBUILD

@@ -0,0 +1,36 @@
+# Maintainer: Jonny Gerold <jonny@fsk141.com>
+
+pkgname=uboot-env
+_tool=env
+pkgver=2009.11
+pkgrel=1
+pkgdesc="mkimage binary for making uboot kernel images"
+arch=('arm')
+license=('GPL' 'LGPL')
+source=(ftp://ftp.denx.de/pub/u-boot/u-boot-$pkgver.tar.bz2
+	fw_env.config)
+
+install=uboot-env.install
+
+md5sums=('d94700614225f53c853dfe714eb5fa47'
+         '19c209f4f25ec9835307942836a3de34')
+
+build() {
+	cd $srcdir/u-boot-$pkgver
+	touch include/config.{h,mk} include/autoconf.mk{.dep,}
+	
+	sed -i \
+	-e 's:HOST_CFLAGS:HOSTCFLAGS:g' \
+	Makefile *.mk tools/Makefile
+
+	sed -i \
+	-e '/CFLAGS/s:-O::' \
+	tools/Makefile
+	
+	make SUBDIRS=tools ${_tool}
+
+	mkdir -p $pkgdir/{etc,usr/bin}
+	install -Dm755 tools/env/fw_printenv $pkgdir/usr/bin/
+	cp $srcdir/fw_env.config $pkgdir/etc
+	ln -s $pkgdir/usr/bin/fw_printenv $pkgdir/usr/bin/fw_setenv
+}

core/uboot-env/fw_env.config

@@ -0,0 +1,5 @@
+# Configuration file for fw_(printenv/saveenv) utility.
+# Up to two entries are valid, in this case the redundand
+# environment sector is assumed present.
+# MTD device name       Device offset   Env. size       Flash sector size
+/dev/mtd2               0x0000          0x20000         0x20000

core/uboot-env/uboot-env.install

@@ -0,0 +1,14 @@
+post_install() {
+        cat <<INSTALL
+>>> To print u-boot env please use fw_printenv
+>> Configuration file located at /etc/fw_env.config
+INSTALL
+}
+
+post_upgrade() {
+        post_install
+}
+
+op=$1
+shift
+$op $*