From 85ef69b20299c2c4f42d6bfbfaf807358ebe2078 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Gonz=C3=A1lez=20Cabanelas?= <dgcbueu@gmail.com>
Date: Tue, 7 Apr 2020 14:35:26 +0200
Subject: mvebu: add support for Buffalo LinkStation LS421DE
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Buffalo LinkStation LS421DE is a dual bay NAS, based on Marvell Armada 370

Hardware:
   SoC:         Marvell Armada 88F6707-A1
   CPU:         Cortex-A9 1200 MHz, 1 core
   Flash:       SPI-NOR 1 MiB, NAND 512 MiB
   RAM:         DDR3 512 MiB
   Ethernet:    1x 10/100/1000 Mbps
   USB:         1x 2.0, 1x 3.0
   SATA:        2x 3.0 Gbps
   LEDs/Input : 5x / 2x (1x button, 1x slide-switch)
   RTC:         Ricoh RS5C372A, I2C, no battery

Flash instruction (UART+TFTP):
  1. Downgrade the OEM firmware to 1.34 version (BUFFALO_BOOTVER=0.13)
  2. Remove any hard drive from inside the bays.
  3. Boot the Openwrt initramfs image using the U-Boot serial console:
         tftpboot 0x1200000 buffalo_ls421de-initramfs-kernel.bin
         bootm 0x1200000
  4. Flash the sysupgrade image using the Openwrt console:
         sysupgrade -n buffalo_ls421de-squashfs-sysupgrade.bin
  5. Wait until it finish, the device will reboot with Openwrt installed
     on the NAND flash.

Note:
  - Device shuting down doesn't work, even if the power slide switch is
    used. We must first, via MDIO, set the unused LED2 at the ethernet
    phy0 to off state. Reboot works ok.

Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
Reviewed-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
---
 target/linux/mvebu/image/Makefile    | 14 ++++++++++++++
 target/linux/mvebu/image/cortexa9.mk | 16 ++++++++++++++++
 2 files changed, 30 insertions(+)

(limited to 'target/linux/mvebu/image')

diff --git a/target/linux/mvebu/image/Makefile b/target/linux/mvebu/image/Makefile
index ef9274866d..3a47878069 100644
--- a/target/linux/mvebu/image/Makefile
+++ b/target/linux/mvebu/image/Makefile
@@ -40,6 +40,20 @@ define Build/boot-img-ext4
 	make_ext4fs -J -L kernel -l $(CONFIG_TARGET_KERNEL_PARTSIZE)M $@.bootimg $@.boot
 endef
 
+define Build/buffalo-kernel-jffs2
+	rm -rf $(KDIR)/kernel_jffs2 $@.fakerd
+	mkdir -p $(KDIR)/kernel_jffs2
+	dd if=/dev/zero of=$@.fakerd bs=131008 count=1 conv=sync
+	$(STAGING_DIR_HOST)/bin/mkimage \
+		-T ramdisk -A $(LINUX_KARCH) -O linux -C gzip -n 'fake initrd' \
+		-d $@.fakerd $(KDIR)/kernel_jffs2/initrd.buffalo
+	cp $@ $(KDIR)/kernel_jffs2/uImage.buffalo
+	$(STAGING_DIR_HOST)/bin/mkfs.jffs2 \
+		--little-endian -v --squash-uids -q -f -n -x lzma -x rtime -m none \
+		--eraseblock=128KiB --pad=$(KERNEL_SIZE) -d $(KDIR)/kernel_jffs2 -o $@
+	rm -rf $(KDIR)/kernel_jffs2 $@.fakerd
+endef
+
 define Build/sdcard-img
 	SIGNATURE="$(IMG_PART_SIGNATURE)" \
 	./gen_mvebu_sdcard_img.sh $@ \
diff --git a/target/linux/mvebu/image/cortexa9.mk b/target/linux/mvebu/image/cortexa9.mk
index 85bfa94dbd..4ab6f4a7e8 100644
--- a/target/linux/mvebu/image/cortexa9.mk
+++ b/target/linux/mvebu/image/cortexa9.mk
@@ -6,6 +6,22 @@
 # See /LICENSE for more information.
 #
 
+define Device/buffalo_ls421de
+  $(Device/NAND-128K)
+  DEVICE_VENDOR := Buffalo
+  DEVICE_MODEL := LinkStation LS421DE
+  SUBPAGESIZE :=
+  KERNEL_SIZE := 33554432
+  FILESYSTEMS := squashfs ubifs
+  KERNEL := kernel-bin | append-dtb | uImage none | buffalo-kernel-jffs2
+  KERNEL_INITRAMFS := kernel-bin | append-dtb | uImage none
+  DEVICE_DTS := armada-370-buffalo-ls421de
+  DEVICE_PACKAGES :=  \
+    kmod-rtc-rs5c372a kmod-hwmon-gpiofan kmod-usb3 kmod-md-raid0 \
+    kmod-md-raid1 kmod-md-mod kmod-fs-xfs mkf2fs e2fsprogs partx-utils
+endef
+TARGET_DEVICES += buffalo_ls421de
+
 define Device/cznic_turris-omnia
   DEVICE_VENDOR := CZ.NIC
   DEVICE_MODEL := Turris Omnia
-- 
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