From: John Crispin <john@openwrt.org>
Date: Tue, 14 Jul 2015 07:39:10 +0000 (+0000)
Subject: brcm2708: Implement sysupgrade
X-Git-Tag: reboot~2505
X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=commitdiff_plain;h=2de791010247a33b38ab05bd6fbfb6ef72c13578

brcm2708: Implement sysupgrade

Implement sysupgrade for Raspberry Pi, similar to the way it is done on x86:
The config files are saved in the boot partition and moved to where they are
normally expected in preinit.

Also add optional gzip compression for the SD card image, since this can save
a lot of space (76M vs 6M), also similar to x86.

Signed-off-by: Bruno Randolf <br1@einfach.org>

SVN-Revision: 46347
---

diff --git a/target/linux/brcm2708/Makefile b/target/linux/brcm2708/Makefile
index 30f6e1dfa4..015aa9c2a8 100644
--- a/target/linux/brcm2708/Makefile
+++ b/target/linux/brcm2708/Makefile
@@ -19,7 +19,7 @@ SUBTARGETS:=bcm2708 bcm2709
 KERNEL_PATCHVER:=3.18
 
 include $(INCLUDE_DIR)/target.mk
-DEFAULT_PACKAGES += brcm2708-gpu-fw kmod-usb-hid kmod-sound-core kmod-sound-arm-bcm2835
+DEFAULT_PACKAGES += brcm2708-gpu-fw kmod-usb-hid kmod-sound-core kmod-sound-arm-bcm2835 kmod-fs-vfat kmod-nls-cp437 kmod-nls-iso8859-1
 
 define Target/Description
 	Build firmware image for Broadcom BCM2708/BCM2709 SoC devices.
diff --git a/target/linux/brcm2708/base-files/lib/preinit/79_move_config b/target/linux/brcm2708/base-files/lib/preinit/79_move_config
new file mode 100644
index 0000000000..7bcea7bf6f
--- /dev/null
+++ b/target/linux/brcm2708/base-files/lib/preinit/79_move_config
@@ -0,0 +1,18 @@
+#!/bin/sh
+# Copyright (C) 2015 OpenWrt.org
+
+BOOTPART=/dev/mmcblk0p1
+
+move_config() {
+	if [ -b $BOOTPART ]; then
+		insmod nls_cp437
+		insmod nls_iso8859-1
+		insmod fat
+		insmod vfat
+		mount -t vfat -o rw,noatime $BOOTPART /mnt
+		[ -f /mnt/sysupgrade.tgz ] && mv -f /mnt/sysupgrade.tgz /
+		umount /mnt
+	fi
+}
+
+boot_hook_add preinit_mount_root move_config
diff --git a/target/linux/brcm2708/base-files/lib/upgrade/platform.sh b/target/linux/brcm2708/base-files/lib/upgrade/platform.sh
new file mode 100644
index 0000000000..3e1ee0067c
--- /dev/null
+++ b/target/linux/brcm2708/base-files/lib/upgrade/platform.sh
@@ -0,0 +1,17 @@
+platform_check_image() {
+	# i know no way to verify the image
+	return 0;
+}
+
+platform_do_upgrade() {
+	sync
+	get_image "$1" | dd of=/dev/mmcblk0 bs=2M conv=fsync
+	sleep 1
+}
+
+platform_copy_config() {
+	mount -t vfat -o rw,noatime /dev/mmcblk0p1 /mnt
+	cp -af "$CONF_TAR" /mnt/
+	sync
+	umount /mnt
+}
diff --git a/target/linux/brcm2708/image/Makefile b/target/linux/brcm2708/image/Makefile
index 10ecfdaef0..53716e0d77 100644
--- a/target/linux/brcm2708/image/Makefile
+++ b/target/linux/brcm2708/image/Makefile
@@ -40,6 +40,9 @@ endef
 define Build/sdcard-img
 	./gen_rpi_sdcard_img.sh $@ $@.boot $(word 2,$^) \
 		$(CONFIG_BRCM2708_SD_BOOT_PARTSIZE) $(CONFIG_TARGET_ROOTFS_PARTSIZE)
+  ifneq ($(CONFIG_TARGET_IMAGES_GZIP),)
+	gzip -k -f9 $(BIN_DIR)/$(IMG_PREFIX)-sdcard-vfat-$(1).img
+  endif
 endef
 
 ### Device macros ###