From fcfb5c515a931d83c1637527df6f54532619c3c4 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Mon, 23 Nov 2015 07:14:38 +0000
Subject: [PATCH] CC: brcm2708: Add sysupgrade support for Raspberry Pi

Also create .gz images if configured to do so.

This is equivalent, but different to what we have in trunk, as the image
creation has been rewritten there.

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

git-svn-id: svn://svn.openwrt.org/openwrt/branches/chaos_calmer@47604 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../base-files/lib/preinit/79_move_config      | 18 ++++++++++++++++++
 .../base-files/lib/upgrade/platform.sh         | 17 +++++++++++++++++
 target/linux/brcm2708/image/Makefile           |  3 +++
 3 files changed, 38 insertions(+)
 create mode 100644 target/linux/brcm2708/base-files/lib/preinit/79_move_config
 create mode 100644 target/linux/brcm2708/base-files/lib/upgrade/platform.sh

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 e70bdd04d8..633ed88005 100644
--- a/target/linux/brcm2708/image/Makefile
+++ b/target/linux/brcm2708/image/Makefile
@@ -28,6 +28,9 @@ define Image/Build/RaspberryPi
 	mcopy -i $(KDIR)/boot.img $(KDIR)/Image ::kernel.img  # Copy OpenWrt built kernel
 	./gen_rpi_sdcard_img.sh $(BIN_DIR)/$(IMG_PREFIX)-sdcard-vfat-$(1).img $(KDIR)/boot.img $(KDIR)/root.$(1) \
 		$(CONFIG_BRCM2708_SD_BOOT_PARTSIZE) $(CONFIG_TARGET_ROOTFS_PARTSIZE)
+  ifneq ($(CONFIG_TARGET_IMAGES_GZIP),)
+	gzip -9n -c $(BIN_DIR)/$(IMG_PREFIX)-sdcard-vfat-$(1).img > $(BIN_DIR)/$(IMG_PREFIX)-sdcard-vfat-$(1).img.gz
+  endif
 endef
 
 define Image/Build