oxnas: bring in new oxnas target

Reboot the oxnas target based on Linux 4.14 by rebasing our support on
top of the now-existing upstream kernel support.
This commit brings oxnas support to the level of v4.17 having upstream
drivers for Ethernet, Serial and NAND flash.
Botch up OpenWrt's local drivers for EHCI, SATA and PCIe based on the
new platform code and device-tree.
Re-introduce base-files from old oxnas target which works for now but
needs further clean-up towards generic board support.

Functional issues:
 * PCIe won't come up (hence no USB3 on Shuttle KD20)
 * I2C bus of Akitio myCloud device is likely not to work (missing
   debounce support in new pinctrl driver)

Code-style issues:
 * plla/pllb needs further cleanup -- currently their users or writing
   into the syscon regmap after acquireling the clk instead of using
   defined clk_*_*() functions to setup multipliers and dividors.
 * PCIe phy needs its own little driver.
 * SATA driver is a monster and should be split into an mfd having
   a raidctrl regmap, sata controller, sata ports and sata phy.

Tested on MitraStar STG-212 aka. Medion Akoya MD86xxx and Shuttle KD20.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

1 files changed, 81 insertions, 0 deletions

diff --git a/target/linux/oxnas/image/ox820.mk b/target/linux/oxnas/image/ox820.mk
new file mode 100644
index 0000000000..9d41270a37
--- /dev/null
+++ b/target/linux/oxnas/image/ox820.mk
@@ -0,0 +1,81 @@
+UBIFS_OPTS = -m 2048 -e 126KiB -c 4096
+DEVICE_VARS += DTS UBIFS_OPTS
+KERNEL_LOADADDR := 0x60008000
+
+define Device/Default
+  KERNEL_NAME := zImage
+  KERNEL_SUFFIX := -uImage
+  KERNEL_INSTALL := 1
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  SUBPAGESIZE := 512
+  FILESYSTEMS := squashfs ubifs
+  PROFILES = Default $$(DTS)
+  KERNEL := kernel-bin | append-dtb | uImage none
+  IMAGES := ubinized.bin sysupgrade.tar
+  IMAGE/ubinized.bin := append-ubi
+  IMAGE/sysupgrade.tar := sysupgrade-tar | append-metadata
+endef
+
+define Build/omninas-factory
+	rm -rf $@.tmp $@.dummy $@.dummy.gz
+	mkdir -p $@.tmp
+	$(CP) $@ $@.tmp/uImage
+	dd if=/dev/zero bs=64k count=4 of=$@.dummy
+	gzip $@.dummy
+	mkimage -A arm -T ramdisk -C gzip -n "dummy" \
+		-d $@.dummy.gz \
+		$@.tmp/rdimg.gz
+	echo 2.35.20140102 > $@.tmp/version ; echo >> $@.tmp/version
+	chmod 0744 $@.tmp/*
+	$(TAR) -C $@.tmp -czvf $@ \
+		$(if $(SOURCE_DATE_EPOCH),--mtime="@$(SOURCE_DATE_EPOCH)") .
+endef
+
+define Build/encrypt-3des
+	openssl enc -des3 -a -k $(1) -in $@ -out $@.new && mv $@.new $@
+endef
+
+define Device/akitio-mycloud
+  DEVICE_DTS := ox820-akitio-mycloud
+  DEVICE_TITLE := Akition myCloud (mini) / SilverStone DC01
+  DEVICE_PACKAGES := kmod-usb2-oxnas kmod-ata-oxnas-sata kmod-ledtrig-usbdev \
+                     kmod-i2c-gpio kmod-rtc-ds1307
+endef
+TARGET_DEVICES += akitio-mycloud
+
+define Device/cloudengines-pogoplug-pro
+  DEVICE_DTS := ox820-cloudengines-pogoplug-pro
+  DEVICE_TITLE := Cloud Engines PogoPlug Pro (with mPCIe)
+  DEVICE_PACKAGES := kmod-usb2-oxnas kmod-ledtrig-usbdev
+endef
+TARGET_DEVICES += cloudengines-pogoplug-pro
+
+define Device/cloudengines-pogoplug-series-3
+  DEVICE_DTS := ox820-cloudengines-pogoplug-series-3
+  DEVICE_TITLE := Cloud Engines PogoPlug Series V3 (without mPCIe)
+  DEVICE_PACKAGES := kmod-usb2-oxnas kmod-ledtrig-usbdev
+endef
+TARGET_DEVICES += cloudengines-pogoplug-series-3
+
+define Device/shuttle-kd20
+  DEVICE_DTS := ox820-shuttle-kd20
+  DEVICE_TITLE := Shuttle KD20
+  KERNEL := kernel-bin | append-dtb | uImage none
+  KERNEL_INITRAMFS_PREFIX = $$(IMAGE_PREFIX)-factory
+  KERNEL_INITRAMFS_SUFFIX := .tar.gz
+  KERNEL_INITRAMFS = kernel-bin | append-dtb | uImage none | omninas-factory | encrypt-3des sohmuntitnlaes
+  DEVICE_PACKAGES := kmod-usb2-oxnas kmod-ata-oxnas-sata kmod-ledtrig-usbdev \
+                     kmod-usb3 kmod-i2c-gpio kmod-rtc-pcf8563 kmod-gpio-beeper \
+                     kmod-hwmon-core kmod-hwmon-gpiofan \
+                     kmod-md-mod kmod-md-raid0 kmod-md-raid1 kmod-fs-ext4 kmod-fs-xfs
+endef
+TARGET_DEVICES += shuttle-kd20
+
+define Device/mitrastar-stg212
+  DEVICE_DTS := ox820-mitrastar-stg212
+  DEVICE_TITLE := MitraStar STG-212
+  KERNEL := kernel-bin | append-dtb | uImage none
+  DEVICE_PACKAGES := kmod-usb2-oxnas kmod-ata-oxnas-sata kmod-ledtrig-usbdev
+endef
+TARGET_DEVICES += mitrastar-stg212