Linksys E3000

The Linksys E3000 is based on the same hardware as the Linksys WRT610N v2.0 with changes to the CFE and a larger NVRAM block. The E3000 is based on the Broadcom 4718 cpu running at 480MHz. It has 8 MB flash (MX29LV640EBTI) and 64 MB SDRAM (H5PS5162FFR). The WNICs are provided by the BCM4718 SoC (2.4GHz B, G and N) and a second constituent chip, the BCM4322 (5GHz A and N). The switch is a BCM53115 chip. The E3000 runs 802.11 A, B, G, and Draft N wireless protocols. It provides 4 gigabit LAN ports, 1 WAN port and a USB 2.0 'storage link' port.

Supported Versions

Version/Model S/N OpenWrt Version Supported Model Specific Notes
E3000 v1.0 CVQ01 *Not Fully Tested* r28295 w/ patches, trunk (untested, r36099) Integrated Wireless and Ethernet are supported in 3.0 Kernel using Broadcom proprietary drivers

Hardware Highlights

CPU Ram Flash Network USB Serial JTag
BCM4718@480MHz 64MiB 8MiB 4 x 1 Yes Yes No/Yes*

Installation

Flash Layout

OEM installation using the TFTP method

FIXME TODO

3.0 Kernel Support

  1. There is a set of patches to allow support for the E3000 switch and WIFI under 3.0.4 kernel builds written by George Kashperko et.al.
  2. ⇒ See the README.
  3. Patchset has not yet been incorporated into OpenWrt main development tree
  4. a RAMDISK Image of OpenWrt trunk r28295 + the patchset was successfully booted, see ⇒ 3.0.4_bootlog.

Caveats

  • Only the WNIC contained in the SoC works at this time with the proprietary Broadcom drivers
  • USB support is not 100%. Overcurrent on port error messages have intermittently been seen.
  • Use At Your Own Risk

Hardware

Info

Architecture: MIPS
Vendor: Broadcom
Bootloader: CFE
System-On-Chip: Broadcom BCM4718
CPU Speed: 480 Mhz
Flash-Chip: MACRONIX MX29LV640EBTI-70G - 64 Megabit (8M x 8-bit / 4M x 16-bit)
Flash size: 8 MiB
RAM: 64 MiB
Wireless: 1x Broadcom BCM4718 SoC 802.11b/g/n, 1x Broadcom BCM4322 802.11a/n (integrated)
Ethernet: Broadcom BCM53115 Gigabit Switch
USB: 1x USB 2.0 Host
Serial: Yes
JTAG: Yes, but SMD pull up resistors are missing

Opening the case

Note: This will void your warranty!

The case is held together with 4 T-10 security star-drive screws (security torx). The top is also attached with plastic claws and it is easiest to start working these from one of the front corners and working the front apart, then work toward the back.

Serial

There are 5 solder pads near the rim on the backside of the PCB, see image from WRT610n. WRT610n

There is also a serial connection on the PCB inside of the WAN port. Serial port settings are 115000@8N1.

CFE Issues

The CFE installed on the E3000 locates itself at 0x80700000. This can cause conflicts with the standard VMLINUX_LOAD_ADDRESS for BCM47XX devices, 0x80001000 when the image size is > 7335936 bytes. It is not known at this time how much this will hamper development efforts. It is possible to modify the VMLINUX_LOAD_ADDRESS in arch/mips/bcm47xx/Platform to allow larger ramdisk enabled images to be tested. A setting of 0x81001000 has been successful with tftp loading of large ramdisk based firmware image.

WRT610N v2

Both wireless adapters work on trunk, however you will need to use broadcom-wl to achieve full speed, and make use of both adapters, as on the open source driver only one adapter works at 24mbit.

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toh/linksys/e3000.txt · Last modified: 2014/05/19 04:59 by nmr