ZyXEL GS1900-8HP rev B1

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multiple revisions of this device, use caution
8-port GbE Smart Managed PoE Switch
3rd Party Firmware
dd-wrt Status Unknown
OpenWrt Supported
Tomato any flavor Incompatible
Gargoyle Status Unknown
Platform
Brand • Model • Rev ZyXEL GS1900-8HP rev B1
CPU1 checkY Realtek RTL8380M
CPU1 Type MIPS 4KEc
CPU1 Speed 500 MHz
Flash1 Chip Macronix MX25L12835FM2I-10G
Flash1 Size 16 MiB 16,777,216 B <br />131,072 Kib <br />16,384 KiB <br />128 Mib <br />0.0156 GiB <br /> (SPI NOR)
RAM1 Size 128 MiB 134,217,728 B <br />1,048,576 Kib <br />131,072 KiB <br />1,024 Mib <br />0.125 GiB <br /> (DDR2)
RAM1 Chip Nanya NT5TU128M8HE-AC
ETH chip1 Realtek RTL8380M
Switch Realtek RTL8380M
Ethernet Port Count 8-1GbE
Ethernet connector 8P8C
Wired Standard IEEE 802.3i/3u/3ab
Auto-MDIX supported
Jumbo frame yes
Switch Class smart

Ethernet OUI: none specified

Expansion IF types none specified
Stock bootloader U-Boot
Power 12 VDC, ? A
Serial Port (UART) yes, 3.3V TTL, (115200 8N1)
3rd Party Firmware Support OpenWrt • (List | Dev | DLs)
 Switch brandSwitch2 brand
ZyXEL GS1900-10HPRealtek
ZyXEL GS1900-16Realtek
ZyXEL GS1900-24 rev A1Realtek
ZyXEL GS1900-24ERealtek
ZyXEL GS1900-24EPRealtek
ZyXEL GS1900-24HPRealtek
ZyXEL GS1900-24HP rev B1Realtek
ZyXEL GS1900-8 rev A1Realtek
ZyXEL GS1900-8 rev B1Realtek
ZyXEL GS1900-8HP rev A1Realtek
ZyXEL GS1900-8HP rev B1Realtek
ZyXEL GS1900-8HP rev B2RealtekRealtek

For a list of all currently documented Realtek chipsets with specifications, see Realtek.

For a list of all currently documented ZyXEL devices with specifications, see ZyXEL.


Flashing

Flashing OpenWrt

Target: realtek
Subtarget: rtl838x
Package architecture: mips_4kec
Support started version: 21.02.0
Current supported version: 25.12.1
LAN Hardware: Realtek RTL8380
LAN Comment: 8x 802.3at PoE ports
WLAN Hardware: none
WLAN Comment: No WLAN
Installation method(s):
U-Boot TFTP + serial recovery, see git-commit
Recovery method(s):
U-Boot TFTP + serial recovery
git • >>
realtek: add support for ZyXEL GS1900-8HP v1 and v2
The ZyXEL GS1900-8HP is an 8 port gigabit switch with PoE+ support.
There are two versions on the market (v1 & v2) which share similar
specs (same flash size and flash layout, same RAM size, same PoE+ power
envelope) but have a different case and board layout that they each
share with other GS1900 siblings.

The v1 seems to share its PCB and case with non-PoE GS1900-8; as such,
adding support for the GS1900-8 would probably be trivial. The v2 seems
to share its casing and platform with its already supported bigger
brother, the GS1900-10HP - its board looks the same, except for two
holes where the GS1900-10 has its SFP ports.

Like their 10 port sibling, both devices have a dual firmware layout.
Both GS1900-8HP boards have the same 70W PoE+ power budget. In order to
manipulate the PoE+, one needs the rtl83xx-poe package [1].

After careful consideration it was decided to go with separate images
for each version.

Specifications (v1)
-------------------
* SoC:       Realtek RTL8380M 500 MHz MIPS 4KEc
* Flash:     Macronix MX25L12835F 16 MiB
* RAM:       Nanya NT5TU128M8HE-AC 128 MiB DDR2 SDRAM
* Ethernet:  8x 10/100/1000 Mbit
* PoE+:      Broadcom BCM59111KMLG (IEEE 802.3at-2009 compliant, 2x)
* UART:      1 serial header with populated standard pin connector on the
             left side of the PCB, towards the bottom. Pins are labeled:
             + VCC (3.3V)
             + TX
             + RX
             + GND

Specifications (v2)
-------------------
* SoC:       Realtek RTL8380M 500 MHz MIPS 4KEc
* Flash:     Macronix MX25L12835F 16 MiB
* RAM:       Samsung K4B1G0846G 128 MiB DDR3 SDRAM
* Ethernet:  8x 10/100/1000 Mbit
* PoE+:      Broadcom BCM59121B0KMLG (IEEE 802.3at-2009 compliant)
* UART:      1 angled serial header with populated standard pin connector
             accessible from outside through the ventilation slits on the
             side. Pins from top to bottom are clearly marked on the PCB:
             + VCC (3.3V)
             + TX
             + RX
             + GND

Serial connection parameters for both devices: 115200 8N1.

Installation
------------
Instructions are identical to those for the GS1900-10HP and apply both
to the GS1900-8HP v1 and v2 as well.

* Configure your client with a static 192.168.1.x IP (e.g. 192.168.1.10).
* Set up a TFTP server on your client and make it serve the initramfs
  image.
* Connect serial, power up the switch, interrupt U-boot by hitting the
  space bar, and enable the network:
  > rtk network on
* Since the GS1900-10HP is a dual-partition device, you want to keep the
  OEM firmware on the backup partition for the time being. OpenWrt can
  only boot off the first partition anyway (hardcoded in the DTS). To
  make sure we are manipulating the first partition, issue the following
  commands:
  > setsys bootpartition 0
  > savesys
* Download the image onto the device and boot from it:
  > tftpboot 0x84f00000 192.168.1.10:openwrt-realtek-generic-zyxel_gs1900-8hp-v{1,2}-initramfs-kernel.bin
  > bootm
* Once OpenWrt has booted, scp the sysupgrade image to /tmp and flash it:
  > sysupgrade /tmp//tmp/openwrt-realtek-generic-zyxel_gs1900-8hp-v{1,2}-squashfs-sysupgrade.bin