The VoCore2 Lite uses the same PCB as the Vocore2.
This patch moves the common VoCore2 parts into dtsi.
Removed memory node in the device tree source file.
Memory is detected automatically.
http://vocore.io/http://vonger.net/http://vonger.cn/
Specifications:
- SoC: MediaTek MT7688AN
- RAM: 64MB DDR2 EtronTech EM68B16CWQH-25H
- Flash: 8MB NOR SPI Flash GigaDevice GD25Q64CWIG
- Wireless: Built into MT7688AN with onboard IPEX connector
Firmware installation:
- VoCore2-Lite ships with firmware forked from OpenWrt.
- Installation from the bootloader is recommended.
- If using luci/sysupgrade use the -n option (do not keep settings)
original firmware uses a modified proprietary MediaTek wireless driver.
- The wireless is disabled by default in LEDE.
- If reverting to factory firmware using the bootloader is recommended.
Signed-off-by: L. D. Pinney <ldpinney@gmail.com>
Tested by: Noble Pepper <noblepepper@gmail.com>
By adding the ICPlus IP1001 phy driver an already set RGMII delay mode
is reset during driver load.
Set the rgmii rx delay to fix corrupt/no packages in case the WAN port
negotiates to 1000MBit.
Fixes: FS#670
Signed-off-by: Mathias Kresin <dev@kresin.me>
By default the wlan eprom contains the generic ralink MAC which is not
the vendor (TP-Link) one. Based on OFW bootlog, it appears that addresses
are decremented from the ethernet MAC.
This patch fixes the MAC address for wlan2g in line with OFW.
Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
Use the GPIO dt-bindings macros and add compatible strings in the
ramips device tree source files.
Signed-off-by: L. D. Pinney <ldpinney@gmail.com>
Signed-off-by: Mathias Kresin <dev@kresin.me>
The Netgear EX3800 is essentially an EX3700 with a mains output socket.
Both devices use the exact same firmware image (original firmware is named
EX3700-EX3800-version.chk).
This patch adds suport by renaming the EX3700 device to EX3700/EX3800 and
updating the necessary glue.
Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
Cleanup the dtsi files and remove one layer of dtsi. Set the size of
the firmware partition to a value matching the flash size from the
board (variant) name.
Remove the usb led trigger. There is neither a default config for the
usb led trigger nor a LED for usb activity indication.
Signed-off-by: Mathias Kresin <dev@kresin.me>
01_leds had a workaround for the power led to compensate for the
inverted GPIO state. This patch was missing from my previous commit.
Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
[add the power led default-state which was omitted in the last commit
by me]
Signed-off-by: Mathias Kresin <dev@kresin.me>
All LEDs GPIOs are active low on this device.
WAN and POWER states were inverted. Add default state for power.
Tested on Archer C50v1.
Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
The WMDR-143N is a small module originally used as a Wifi client
in some Loewe smart TV sets. It is sold cheaply at german surplus
shops. The module contains a RT3662 SOC.
Specifications:
- 500 MHz CPU Clock
- 1x 10/100Mbps Ethernet (pin header)
- 32 MB of RAM
- 8 MB of FLASH
- 2T3R 2.4/5 GHz (SOC internal)
- 3 Antennas on PCB
- UART pads on PCB (J3: 1 = +3.3V, 2 = RX, 3 = TX, 4 = GND), TX
and RX are 3,3V only! The square hole is pin 1
- Power supply pads on PCB (J6: 1 and 2 = +5V, 3 and 4 = GND)
The square hole is pin 1
The original firmware has two identical kernel/rootfs images and
two "Factory" calibration data blocks in flash. The LEDE image
leaves only the first "Factory" block in place and uses both
"Kernel" blocks and the redundant "Factory" block together to gain
enough space for the jffs2 partition.
Flash instructions:
You need UART and Ethernet connections to flash the board. Use
the LEDE "sysupgrade.bin" image with tftp.
Apply power to the board and in the first 5 seconds, hit 2 to
select TFTP upload. The bootloader asks for board- and server IP
addresses and filename.
Alternate method: With the vendor firmware running, assign an IP
address to the ethernet port, tftp the firmware image to
/tmp and write to mtd4 ("KernelA").
Signed-off-by: Oliver Fleischmann <ogf@bnv-bamberg.de>
[remove pinctrl node from dts, no pin is used as GPIO]
Signed-off-by: Mathias Kresin <dev@kresin.me>
there were 2 bugs
*) core1 came up with a bad bogo mips, looks like the clock needed time to stabilize
*) HPT frequency was not set making r4k timers not come up properly
Signed-off-by: John Crispin <john@phrozen.org>
The GnuBee Personal Cloud One crowdfunded on https://www.crowdsupply.com
It is a low-cost, low-power, network-attached storage device.
Specifications:
- SoC: MediaTek MT7621AT
- RAM: DDR3 512 MB
- Flash: 32 MB
- Six SATA ports for 2.5" Drives
- One micro SDcard
- One USB 3.0
- Two USB 2.0
- Gigabit Ethernet: 1 x WAN and 1 x LAN
- UART 3.5mm Audio Jack or 3 pin header - 57600 8N1
- Four GPIOs available on a pin header
Flash instructions:
The GnuBee Personal Cloud One ships with libreCMC installed.
libreCMC is a Free Software Foundation approved fork of LEDE/OpenWrt.
As such one can upgrade using the webinterface or sysupgrade.
Das U-Boot has multiple options for recovery or updates including :
- USB
- http
- tftp
Signed-off-by: L. D. Pinney <ldpinney@gmail.com>
[use switchdev led trigger, all interfaces are in vlan1; rename leds
according to board.d setting; remove ge2 group from the pinmux, this
group doesn't exist in the driver]
Signed-off-by: Mathias Kresin <dev@kresin.me>
The VoCore2 features 128MB of RAM, therefore set
memory in DTS to 128*1024*1024 = 0x8000000
The board's LED is connected to GND, set it to
ACTIVE_HIGH here.
Make serial console working again on kernel 4.9 by
change of pinmux configuration.
Signed-off-by: Paul Wassi <p.wassi@gmx.at>
The TP-Link RE350 is a wall-wart AC1200 range extender/access point with
a single gigabit ethernet port and two non-detachable antennas, based on
the MT7621A SoC with MT7603E and MT7612E radios.
Firmware wise it is very similar to the QCA based RE450.
SoC: MediaTek MT7621A (880MHz)
Flash: 8MiB (Winbond W25Q64)
RAM: 64MiB (DDR2)
Ethernet: 1x 1Gbit
Wireless: 2T2R 2.4Ghz (MT7603E) and 5GHz (MT7612E)
LEDs: Power, 2.4G, 5G (blue), WPS (red and blue), ethernet link/act
(green)
Buttons: On/off, LED, reset, WPS
Serial header at J1, 57600 8n1:
Pin 1 TX
Pin 2 RX
Pin 3 GND
Pin 4 3.3V
Factory image can be uploaded directly through the stock UI.
Signed-off-by: Alex Maclean <monkeh@monkeh.net>
It uses one MT7615D radio chip with DBDC mode enabled. This mode allows
this single chip act as an 2x2 11n radio and an 2x2 11ac radio at the
same time. However mt76 doesn't support it currently so there is no
wireless available.
Specification:
- SoC: MediaTek MT7621AT
- Flash: 16 MB
- RAM: 128 MB
- Ethernet: 1 x WAN (10/100/1000Mbps) and 4 x LAN (10/100/1000 Mbps)
- Wireless radio: MT7615D on PCIE0
- UART: 1 x UART on PCB - 57600 8N1
Issue:
- Wireless radio doesn't work due to the lack of driver.
Flash instruction:
Using UART:
1. Configure PC with a static IP address and setup an TFTP server.
2. Put the firmware into the tftp directory.
3. Connect the UART line as described on the PCB.
4. Power up the device and press 2,then follow the instruction to
set device and tftp server IP address and input the firmware
file name.U-boot will then load the firmware and write it into
the flash.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Correct MAC address lookup to appropriate offset based on vendor
source.
Override the WAN MAC to use the same address as LAN. The switch driver
increments the base MAC address for the WAN vlan but the stock firmware
uses the same MAC address for all interfaces.
Based on vendor source commit
https://github.com/domino-team/lede-1701/commit/efb0518
Signed-off-by: John Marrett <johnf@zioncluster.ca>
TP-Link TL-WR840N v4 and TL-WR841N v13 are simple N300 routers with
5-port FE switch and non-detachable antennas. Both are very similar
and are based on MediaTek MT7628NN (aka MT7628N) WiSoC.
The difference between these two models is in number of available
LEDs, buttons and power input switch.
This work is partially based on GitHub PR#974.
Specification:
- MT7628N/N (580 MHz)
- 64 MB of RAM (DDR2)
- 8 MB of FLASH
- 2T2R 2.4 GHz
- 5x 10/100 Mbps Ethernet
- 2x external, non-detachable antennas
- UART (J1) header on PCB (115200 8n1)
- TL-WR840N v4: 5x LED (GPIO-controlled), 1x button
- TL-WR841N v13: 8x LED (GPIO-controlled*), 2x button, power input
switch
* WAN LED in TL-WR841N v13 is a dual-color, dual-leads type which isn't
(fully) supported by gpio-leds driver. This type of LED requires both
GPIOs state change at the same time to select color or turn it off.
For now, we support/use only the green part of the LED.
Factory image notes:
These devices use version 3 of TP-Link header, fortunately without RSA
signature (at least in case of devices sold in Europe). The difference
lays in the requirement for a non-zero value in "Additional Hardware
Version" field. Ideally, it should match the value stored in vendor
firmware header on device ("0x4"/"0x13" for these devices) but it seems
that anything other than "0" is correct.
We are able to prepare factory firwmare file which is accepted and
(almost) correctly flashed from the vendor GUI. As it turned out, it
accepts files without U-Boot image with second header at the beginning
but due to some kind of bug in upgrade routine, flashed image gets
corrupted before it's written to flash.
Tests showed that the GUI upgrade routine copies value of "Additional
Hardware Version" from existing firmware into offset "0x2023c" in
provided file, _before_ storing it in flash. In case of vendor firmware
upgrade files (which all include U-Boot image and two headers), this
offset points to the matching field in kernel+rootfs firmware part
header. Unfortunately, in case of LEDE factory image file which contains
only one header, it points to the offset "0x2023c" in kernel image. This
leads to a corrupted kernel and ends up with a "soft-bricked" device.
The good news is that U-Boot in these devices contains well known tftp
recovery mode, which can be triggered with "reset" button. What's more,
in comparison to some of older MediaTek based TP-Link devices, this
recovery mode doesn't write whole file at offset "0x0" in flash, without
verifying provided file in advance. In case of recovery mode in these
devices, first "0x20000" bytes are always skipped and "0x7a0000" bytes
from rest of the file are stored in flash at offset "0x20000".
Flash instruction:
Until (if at all) TP-Link fixes described problem, the only way to flash
LEDE image in these devices is to use tftp recovery mode in U-Boot:
1. Configure PC with static IP 192.168.0.66/24 and tftp server.
2. Rename "lede-ramips-mt7628-tl-wr84...-squashfs-tftp-recovery.bin"
to "tp_recovery.bin" and place it in tftp server directory.
3. Connect PC with one of LAN ports, press the reset button, power up
the router and keep button pressed for around 6-7 seconds, until
device starts downloading the file.
4. Router will download file from server, write it to flash and reboot.
To access U-Boot CLI, keep pressed "4" key during boot.
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
This patch adds support for the Ubiquiti EdgeRouter X-SFP and
improves support for the EdgeRouter X (PoE-passthrough).
Specification:
- SoC: MediaTek MT7621AT
- Flash: 256 MiB
- RAM: 265 MiB
- Ethernet: 5 x LAN (1000 Mbps)
- UART: 1 x UART on PCB (3.3V, RX, TX, GND) - 57600 8N1
- EdgeRouter X:
- 1 x PoE-Passtrough (Eth4)
- powered by Wallwart or passive PoE
- EdgeRouter X-SFP:
- 5 x PoE-Out (24V, passive)
- 1 x SFP (unknown status)
- powered by Wallwart (24V)
Doesn't work:
* SoC has crypto engine but no open driver.
* SoC has nat acceleration, but no open driver.
* This router has 2MB spi flash soldered in but MT
nand/spi drivers do not support pin sharing,
so it is not accessable and disabled. Stock
firmware could read it and it was empty.
Installation
via vendor firmware:
- build an Initrd-image (> 3MiB) and upload the factory-image
- initrd can have luci-mod-failsafe
- flash final firmware via LuCI / sysupgrade on rebooted system
via TFTP:
- stop uboot into tftp-load into option "1"
- upload factory.bin image
Signed-off-by: Sven Roederer <devel-sven@geroedel.de>
The "reserved" partition should probably be read-only, just in case. Even
not knowing it's content, other devices have marked it as such, so it
seems a good idea to do so also for this device.
Signed-off-by: Enrico Mioso <mrkiko.rs@gmail.com>
CC: Mathias Kresin <dev@kresin.me>
CC: Hanqing Wong <hquu@outlook.com>
Neither the AsiaRF AWM002 or AWM003 actually has an LED on the module
board. The ld1 and ld2 do not represent actual LEDs. These pins might
connect to LEDS on an eval board or other carrier board, but that is
outside the scope of this device tree file.
Signed-off-by: Russell Senior <russell@personaltelco.net>
This patch adds supports for the GL-inet GL-MT300N-V2.
Specification:
- SoC: MediaTek MT7628AN
- Flash: 16 MiB (W25Q128FVSG)
- RAM: 128 MiB DDR
- Ethernet: 1 x WAN (100 Mbps) and 1 x LAN (100 Mbps)
- USB: 1 x USB 2.0 port
- Button: 1 x switch button, 1 x reset button
- LED: 3 x LEDS (system power led is not GPIO controller)
- UART: 1 x UART on PCB (JP1: 3.3V, RX, TX, GND)
Installation through Luci:
- The original firmware is LEDE, so both LuCI or sysupgrade can be used.
- Do not keep settings, for sysupgrade please use the -n option.
Installation through bootloader webserver:
- Plug power and hold reset button until red LED blink to bright.
- Install sysupgrade image using web interface on 192.168.1.1.
Signed-off-by: Kyson Lok <kysonlok@gmail.com>
[match maximum image size with firmware partition]
Signed-off-by: Mathias Kresin <dev@kresin.me>
Specification:
- SoC: MediaTek MT7620A (580 MHz)
- RAM: 64 MiB (Winbond W9751G6JB-25)
- Flash: 16 MiB (Spansion S25FL128SAIF00)
- LAN: x4 100M
- WAN: x1 100M
- Others: USB 2.0, reset button, wps button and 9 LEDs
Issues:
- 5 GHz band is not functional (missing driver support)
Installation:
Asus windows recovery tool:
- install the Asus firmware restoration utility
- unplug the router, hold the reset button while powering it on
- release when the power LED flashes slowly
- specify a static IP on your computer:
IP address: 192.168.1.75;
Subnet mask 255.255.255.0
- Start the Asus firmware restoration utility, specify the sysupgrade
image, and press upload
TFTP Recovery method:
- set computer to a static ip, 192.168.1.75
- connect computer to the LAN 1 port of the router
- hold the reset button while powering on the router for a few seconds
- send firmware image using a tftp client; i.e from linux:
$ tftp
tftp> binary
tftp> connect 192.168.1.1
tftp> put lede-ramips-mt7620-rt-ac51u-squashfs-sysupgrade.bin
tftp> quit
Signed-off-by: Ørjan Malde <foxyred333@gmail.com>
This device exactly same as NBG-419N but with USB port and USB Led.
Specification:
- SoC: Ralink RT3052 (MIPS24Kc) @384MHz
- RAM: 32 MiB
- Flash: 8 MiB
- WLAN: WiSoC 2T2R/300Mbps (2.4GHz)
- LAN: 4x100M
- WAN: 1x100M
- USB: 1x2.0
Installation via serial console (57600 8N1) from TFTP server
- rename the firmware to something shorter, for example
"sysupgrade.bin" (max. 32 chars)
- copy firmware TFTP server's directory
- when you power on device, and see U-Boot log, immediatly push "2"
once.
- You will see this message:
2: System Load Linux Kernel then write to Flash via TFTP.
Warning!! Erase Linux in Flash then burn new one. Are you sure?
- Push "y", and enter: device IP, then TFTP server's IP, and then
image firmware file name.
The firmware will be downloaded within ~30 seconds and flashed to the
device (It will take about 2 minutes).
Signed-off-by: Alexey Belyaev <spider@spider.vc>
[squash commits, compact commit message, fix compatible string, remove
superfluous pinmuxes]
Signed-off-by: Mathias Kresin <dev@kresin.me>
Add the changes suggested by FS#716 to fix the switch driver initialization
on the ZTE Q7.
Also remove the `pinctrl-names` field obsoleted by the changes.
Reported-by: Harry Lau <harrylwc@gmail.com>
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Fix a copy/paste error and include the ZBT-WE826 dtsi instead of the
ZBT-WG3526 one.
Fix the syntax error in the ZBT-WE826 dtsi to prevent an compile error.
Signed-off-by: Mathias Kresin <dev@kresin.me>
The ZBT-WG826 is available with 16 or 32 MByte of flash. Split the
device tree source file, rename the currently supported 16 MByte
version and add the 32 MByte variant.
Signed-off-by: Mathias Kresin <dev@kresin.me>
The Digineo AC1200 Pro is the 32MB flash variant of the ZBT-WG3526 with
unpopulated/exposed sdhci slot. Rename to board to the OEM/ODM name and
add the sdhci kernel module to use it for multiple clones.
Signed-off-by: Mathias Kresin <dev@kresin.me>
The ZBT-WG3526 is available with 16 or 32 MByte of flash. Rename the
current supported 16MByte version to indicate which flash size variant
is supported.
Signed-off-by: Mathias Kresin <dev@kresin.me>
Specification:
- SoC: MT7621AT, MT7603EN and MT7612EN
- Flash: 16 MiB (W25Q128FVSG)
- RAM: 512 MiB (EM6GE16EWXD-12H)
- Ethernet: 1 x WAN (10/100/1000Mbps) and 4 x LAN (10/100/1000 Mbps)
- Others: USB 2.0, micro SD slot, reset button and 8 x LEDs
Issues:
- Two LEDs for 2.4 GHz and 5 GHz Wi-Fi do not work, can't find GPIOs.
- The pwr LED is not GPIO controllable
How to install:
- The original firmware is OpenWrt, so both LuCI or sysupgrade can be used.
- Do not keep settings, for sysupgrade please use the -n option.
Signed-off-by: Jiawei Wang <buaawjw@gmail.com>
The wan port is connected to switch port 0. Fix the mediatek,portmap as
well as the default switch config.
Signed-off-by: Alexey Belyaev <spider@spider.vc>
PSG1218 got only 4 Ethernet ports and WAN on port 3 while
PSG1218K2C got 5 Ethernet ports and WAN on port 4
Switch to use kmod-kt76x2 instead of kmod-mt76 for both devices while
at it.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Fix the PCIe 5GHz wireless by using the on flash eeprom/caldata.
Disable the 2.4GHz band as this band has no antennas attached but is
enabled in the eeprom/caldata.
Fixes: FS#691
Signed-off-by: Mathias Kresin <dev@kresin.me>
Fix the PCIe 5GHz wireless by using the ralink mtd-eeprom property as
this board have a RT5592 and uses the rt2x00 driver. The mediathek
device tree bindings do not work here.
Fixes: FS#691
Fixes: d8dd207ea6 ("ramips: use the ralink,mtd-eeprom device tree property")
Signed-off-by: Mathias Kresin <dev@kresin.me>
Even the commit message of the patch adding support for the MiWiFi Nano
says that a 16 MB flash chip is used. Extend the firmware partition to
make use of all available flash space.
Fixes: FS#622
Signed-off-by: Mathias Kresin <dev@kresin.me>
This patch adds support for the Zbtlink ZBT-WE2026.
Specification:
- SoC: MediaTek MT7620N (580MHz)
- RAM: 64 MiB
- Flash: 8 MiB SPI
- LAN: 4x100M
- WAN: 1x100M
Installation through bootloader webserver:
- With the power unplugged press and hold reset button.
- Plug power and hold reset button until LED starts to blink.
- Install sysupgrade image using web interface on 192.168.1.1.
Signed-off-by: Vaclav Svoboda <svoboda@neng.cz>
Specifications:
* SoC: MT7620A
* RAM: 64 MB DDR
* Flash: 8MB NOR SPI flash
* WiFi: MT7612E (5Ghz) and builtin MT7620A (2.4GHz)
* LAN: 1x100M
The -factory images can be flashed from the device's web
interface or via nmrpflash.
Co-authored-by: Paul Oranje <por@xs4all.nl>
Signed-off-by: Paul Oranje <por@xs4all.nl>
Signed-off-by: Joseph C. Lehner <joseph.c.lehner@gmail.com>
This patch adds support for the Netgear R6220, aka Netgear AC1200 and
R6220-100NAS.
Specification:
- SoC: MediaTek MT7621ST (880 MHz)
- Falsh: 128 MiB (Macronix MX30LF1G08AA-TI)
- RAM: 128 MiB (Nanya NT5CB64M16FP-DH)
- Wireless: MediaTek MT7603EN b/g/n , MediaTek MT7612EN an+ac
- LAN speed: 10/100/1000
- LAN ports: 4
- WAN speed: 10/100/1000
- WAN ports: 1
- Serial baud rate of Bootloader and factory firmware: 57600
Installation through telnet:
- Copy kernel.bin and rootfs.bin to a USB flash disk, plug to usb port
on the router.
- Enable telnet with link: http://192.168.1.1/setup.cgi?todo=debug
(login if required, default: admin password)
- You will see "Debug Enabled!"
- Telnet 192.168.1.1 and login with "root"
- ls /mnt/shares/ to find out path of your USB disk. 'myUdisk' for
example.
- cd /mnt/shares/myUdisk
- mtd_write write rootfs.bin Rootfs
- mtd_write write kernel.bin Kernel
- reboot
nmrpflash can be used to recover to the netgear firmware if a broken
image was flashed.
Signed-off-by: Hanqing Wong <hquu@outlook.com>
* The left most mini-PCIe slot (the one attached to SIM2) can be
power-cycled by setting GPIO 0 to high/low.
* The D240 only needs the MT76x2 module, so update makefile to reflect this.
Note that until the default mt7620 target is updated, then kmod-mt76 (and thus
kmod-mt7603) will be selected by default.
v2->v3:
* Indentation error.
v1->v2:
* Rename gpio and remove redundant comment (thanks Piotr Dymacz)
Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
This device features both a 2.4 and 5Ghz radio, and supports
802.11a/b/g/n/ac modes.
It has 5 Gb-Ethernet ports and a USB 3.0 host port.
It is powered by the Mediatek MT7621 SoC, and the MT7602E and MT7612E wifi
chipsets, together with 128MB of RAM and 16 MB of SPI Flash.
The stock firmware is in fact based on some openwrt barrier breaker, with a
mediatek SDK kernel, and an afoundry custom made web interface (not LuCI
based).
Firmware update page on the stock web interface can not accept sysupgrade
images, it bricks the device.
At this point, the only working solution I found was to connect to the
serial console port (available on J4 header) and to use opkg to install
dropbear.
Then scp the sysupgrade file in the device's /tmp and run sysupgrade from
console without preserving configuration files.
Signed-off-by: Francois Goudal <francois@goudal.net>
This patch adds supports for the HiWiFi HC5962(gee4) http://www.hiwifi.com
Short specification:
- MT7621AT + MT7612EN + 7603EN
- 256MB DDR3 RAM
- 128MB NAND flash
- 1+3 x 1000M Ethernet
- 1x USB 2.0 port. 1x USB 3.0 port.
- reset button
- UART pad on PCB (JP3: TX, RX, GND, 3.3V)
Flash instruction:
1, Download lede-ramips-mt7621-hc5962-squashfs-factory.bin
2, Login as root via SSH on 192.168.199.1 and then copy factory.bin(using wget or nc or...) to /tmp/
3, use the following commands:
$ mtd write /tmp/lede-ramips-mt7621-hc5962-squashfs-factory.bin firmware
$ mtd erase firmware_backup && reboot
After reboot you should be able to login as root via SSH on 192.168.1.1
Signed-off-by: ZengFei Zhang <zhangzengfei@kunteng.org>
L. D. Pinney