mvebu: fix sysupgrade

mvebu was modifying RAMFS_COPY_BIN and RAMFS_COPY_DATA from a
sysupgrade_pre_upgrade hook. As the ramfs is created from stage2, this
did not have an effect anymore after the staged sysupgrade changes.

As it doesn't really hurt to copy fw_printenv and fw_setenv
unconditionally, simply add them in /lib/upgrade/platform.sh, so stage2
will see them.

Config copying is moved to a function called by platform_copy_config, where
it belongs.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Fixes: FS#821
Fixes: 30f61a34b4 "base-files: always use staged sysupgrade"

package/base-files/files/lib/upgrade/stage2

@@ -48,7 +48,7 @@ switch_to_ramfs() {
 		/bin/sleep /bin/zcat /usr/bin/bzcat /usr/bin/printf /usr/bin/wc \
 		/bin/cut /usr/bin/printf /bin/sync /bin/mkdir /bin/rmdir	\
 		/bin/rm /usr/bin/basename /bin/kill /bin/chmod /usr/bin/find \
-		/bin/mknod
+		/bin/mknod /bin/touch
 
 	install_bin /sbin/mtd
 	install_bin /sbin/mount_root

target/linux/mvebu/base-files/lib/upgrade/linksys.sh

@@ -73,21 +73,7 @@ platform_do_upgrade_linksys() {
 	}
 }
 
-linksys_preupgrade() {
-	local board=$(mvebu_board_name)
-
-	case "$board" in
-	armada-385-linksys-caiman|armada-385-linksys-cobra|armada-385-linksys-shelby|armada-xp-linksys-mamba|armada-385-linksys-rango)
-		export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /usr/sbin/fw_printenv /usr/sbin/fw_setenv"
-		export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /bin/mkdir /bin/touch"
-		export RAMFS_COPY_DATA="${RAMFS_COPY_DATA} /etc/fw_env.config /var/lock/fw_printenv.lock"
-
-		[ -f /tmp/sysupgrade.tgz ] && {
-			cp /tmp/sysupgrade.tgz /tmp/syscfg/sysupgrade.tgz
-		}
-		;;
-	esac
+platform_copy_config_linksys() {
+	cp -f /tmp/sysupgrade.tgz /tmp/syscfg/sysupgrade.tgz
+	sync
 }
-
-append sysupgrade_pre_upgrade linksys_preupgrade
-

target/linux/mvebu/base-files/lib/upgrade/platform.sh

@@ -5,7 +5,8 @@
 
 . /lib/mvebu.sh
 
-RAMFS_COPY_DATA=/lib/mvebu.sh
+RAMFS_COPY_BIN='/usr/sbin/fw_printenv /usr/sbin/fw_setenv'
+RAMFS_COPY_DATA='/lib/mvebu.sh /etc/fw_env.config /var/lock/fw_printenv.lock'
 REQUIRE_IMAGE_METADATA=1
 
 platform_check_image() {
@@ -34,6 +35,9 @@ platform_copy_config() {
 	local board=$(mvebu_board_name)
 
 	case "$board" in
+	armada-385-linksys-caiman|armada-385-linksys-cobra|armada-385-linksys-rango|armada-385-linksys-shelby|armada-xp-linksys-mamba)
+		platform_copy_config_linksys
+		;;
 	armada-388-clearfog)
 		platform_copy_config_clearfog "$ARGV"
 		;;