[source] bcm53xx: support SafeLoader format in sysupgrade

[LEDE Commits]

rmilecki pushed a commit to source.git, branch master:
https://git.lede-project.org/2d61c26f02557b0b3734f694efdb81a2694fdd70

commit 2d61c26f02557b0b3734f694efdb81a2694fdd70
Author: Rafał Miłecki <rafal at milecki.pl>
AuthorDate: Sat Nov 19 07:58:26 2016 +0100

    bcm53xx: support SafeLoader format in sysupgrade
    
    Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
---
 target/linux/bcm53xx/Makefile                      |  3 +-
 .../bcm53xx/base-files/lib/upgrade/platform.sh     | 35 +++++++++++++++++++++-
 2 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/target/linux/bcm53xx/Makefile b/target/linux/bcm53xx/Makefile
index 917e55b..a98fd39 100644
--- a/target/linux/bcm53xx/Makefile
+++ b/target/linux/bcm53xx/Makefile
@@ -23,7 +23,8 @@ include $(INCLUDE_DIR)/target.mk
 
 KERNELNAME:=zImage dtbs
 
-DEFAULT_PACKAGES += swconfig wpad-mini nvram oseama otrx \
+DEFAULT_PACKAGES += swconfig wpad-mini nvram \
+	osafeloader oseama otrx \
 	kmod-gpio-button-hotplug \
 	kmod-leds-gpio kmod-ledtrig-default-on kmod-ledtrig-timer
 
diff --git a/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
index f0a48dd..3e4eae5 100644
--- a/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
@@ -59,6 +59,11 @@ platform_identify() {
 		return
 	}
 
+	if osafeloader info "$1" > /dev/null; then
+		echo "safeloader"
+		return
+	fi
+
 	echo "unknown"
 }
 
@@ -102,6 +107,8 @@ platform_check_image() {
 				error=1
 			fi
 		;;
+		"safeloader")
+		;;
 		"seama")
 			local img_signature=$(oseama info "$1" | grep "Meta entry:.*signature=" | sed "s/.*=//")
 			local dev_signature=$(platform_expected_image)
@@ -118,6 +125,13 @@ platform_check_image() {
 			}
 		;;
 		"trx")
+			local expected=$(platform_expected_image)
+
+			[ "$expected" == "safeloader" ] && {
+				echo "This device expects SafeLoader format and may not work with TRX"
+				error=1
+			}
+
 			if ! otrx check "$1"; then
 				echo "Invalid (corrupted?) TRX firmware"
 				error=1
@@ -245,7 +259,7 @@ platform_pre_upgrade_seama() {
 }
 
 platform_pre_upgrade() {
-	export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /usr/bin/oseama /bin/sed"
+	export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /usr/bin/osafeloader /usr/bin/oseama /bin/sed"
 
 	local file_type=$(platform_identify "$1")
 
@@ -270,6 +284,24 @@ platform_trx_from_cybertan_cmd() {
 	echo -n dd bs=32 skip=1
 }
 
+platform_img_from_safeloader() {
+	local dir="/tmp/sysupgrade-bcm53xx"
+
+	# Extract partitions from SafeLoader
+	rm -fR $dir
+	mkdir -p $dir
+	osafeloader extract "$1" \
+		-p "os-image" \
+		-o $dir/os-image
+	osafeloader extract "$1" \
+		-p "file-system" \
+		-o $dir/file-system
+
+	mtd write $dir/file-system rootfs
+
+	echo -n $dir/os-image
+}
+
 platform_img_from_seama() {
 	local dir="/tmp/sysupgrade-bcm53xx"
 	local offset=$(oseama info "$1" -e 0 | grep "Entity offset:" | sed "s/.*:\s*//")
@@ -298,6 +330,7 @@ platform_do_upgrade() {
 	case "$file_type" in
 		"chk")		cmd=$(platform_trx_from_chk_cmd "$trx");;
 		"cybertan")	cmd=$(platform_trx_from_cybertan_cmd "$trx");;
+		"safeloader")	trx=$(platform_img_from_safeloader "$trx");;
 		"seama")	trx=$(platform_img_from_seama "$trx");;
 	esac