mvebu: cortexa9: Add support for Ctera C200-V2

2-Bay NAS - maximum two 3.5" Harddisks

Hardware:
  - SoC: Marvell 88F6707-A1 ARMv7 Processor 1,2GHz (ARMADA 370 SoC)
  - Ram: 1GB (2x Nanya NT5CC512M8DN-D1)
  - NAND Flash: 256MB (ESMT F59L2G81A-25T)
  - Lan: 1x GBE (Marvell 88E1318-NNB2)
  - Storage: 2x SATA HDD 3.5" Slot
  - USB: 2x USB 3.0 port (Renesas uPD720202)
  - Console: Internal J3 connector (1: Vcc, 2: Rx, 3: Tx, 4: GND)
  - LEDs: 13x GPIO controlled
  - Buttons: 2x GPIO controlled

Known issues:
  - Buzzer is unused due lack of proper driver
  - USB1/2 usbport ledtrigger won't work (through DT)
  - Renesas uPD720202 requires firmware file. It's possible to find
    non-free binary. Please look for 'UPDATE.mem' file and put in into
    '/lib/firmware/renesas_usb_fw.mem' file.

Installation:
  - Apply factory initramfs image via stock web-gui.
  - Do sysupgrade to make installation complete.

Back to stock:
  - OpenWrt rootfs partition use unused space after stock firmware.
  - Full revert is possible.
  - Login via ssh and run:

 ## ctera_c200-v2_back_to_factory start ##
 . /lib/functions.sh
 part=$(find_mtd_part "active_bank")
 active_bank=$(strings "$part" | grep bank)
 if [ "$active_bank" = "bank1" ]; then
 	echo "bank2" > /tmp/change_bank
 else
 	echo "bank1" > /tmp/change_bank
 fi
 mtd write /tmp/change_bank active_bank
 reboot
 ## ctera_c200-v2_back_to_factory end ##

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
(put back-to-stock script into commit message, removed dup. SUBPAGESIZE var,
added 01_leds for non-working dt-usb-port trigger)
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/target/linux/mvebu/image/Makefile b/target/linux/mvebu/image/Makefile
index 9220c6c9f1..44e66a5f87 100644
--- a/target/linux/mvebu/image/Makefile
+++ b/target/linux/mvebu/image/Makefile
@@ -51,6 +51,63 @@ define Build/buffalo-kernel-jffs2
 	rm -rf $(KDIR)/kernel_jffs2 $@.fakerd
 endef
 
+# Some info about Ctera firmware:
+# 1. It's simple tar file (GNU standard), but it must have ".firm" suffix.
+# 2. It contains two images: kernel and romdisk. Both are required.
+# 3. Every image has header and trailer file.
+# 4. The struct of tar firmware is: header kernel trailer header romdisk trailer
+# 5. In header file are some strings used to describe image. It was decoded from
+#    factory image.
+# 6. Version format in header file is restricted by Original FW.
+# 7. Trailer file contains MD5 sum string of header and image file.
+# 8. Firmware file must have <=24MB size.
+
+define Build/ctera-firmware
+	mkdir -p $@.tmp
+
+	# Prepare header and trailer file for kernel
+	echo "# CTera firmware information file" > $@.tmp/header
+	echo "image_type=kernel" >> $@.tmp/header
+	echo "arch=ARM" >> $@.tmp/header
+	echo "board=2Drive_A" >> $@.tmp/header
+	echo "version=5.5.165.61499" >> $@.tmp/header
+	echo "kernel_cmd=console=ttyS0,115200 earlycon" >> $@.tmp/header
+	echo "date=$$(date $(if $(SOURCE_DATE_EPOCH),-d@$(SOURCE_DATE_EPOCH)))" \
+		>> $@.tmp/header
+
+	cp $@ $@.tmp/kernel
+
+	echo "MD5=$$(cat $@.tmp/header $@.tmp/kernel | $(MKHASH) md5)" \
+		> $@.tmp/trailer
+
+	tar $(if $(SOURCE_DATE_EPOCH),--mtime="@$(SOURCE_DATE_EPOCH)") \
+		-H gnu -C $@.tmp -cf $@.tar header kernel trailer
+
+	# Prepare header and trailer file for fake romdisk
+	echo "# CTera firmware information file" > $@.tmp/header
+	echo "image_type=romdisk" >> $@.tmp/header
+	echo "initrd=yes" >> $@.tmp/header
+	echo "arch=ARM" >> $@.tmp/header
+	echo "board=2Drive_A" >> $@.tmp/header
+	echo "version=5.5.165.61499" >> $@.tmp/header
+	echo "date=$$(date $(if $(SOURCE_DATE_EPOCH),-d@$(SOURCE_DATE_EPOCH)))" \
+		>> $@.tmp/header
+
+	rm -f $@
+	touch $@
+	$(call Build/append-uImage-fakehdr, ramdisk)
+	cp $@ $@.tmp/romdisk
+
+	echo "MD5=$$(cat $@.tmp/header $@.tmp/romdisk | $(MKHASH) md5)" \
+		> $@.tmp/trailer
+
+	tar $(if $(SOURCE_DATE_EPOCH),--mtime="@$(SOURCE_DATE_EPOCH)") \
+		-H gnu -C $@.tmp -rf $@.tar header romdisk trailer
+
+	mv $@.tar $@
+	rm -rf $@.tmp
+endef
+
 define Build/sdcard-img
 	SIGNATURE="$(IMG_PART_SIGNATURE)" \
 	./gen_mvebu_sdcard_img.sh $@ \