This page covers the BCM33xx SoC specificities, but the BCM63xx SoC are mostly the same chip, except that the DOCSIS/EuroDOCSIS core is replaced with a DSL one.

• The Broadcom BCM33xx currently only begins booting with the SB4xxx cable modems

• The OpenWrt support for the Broadcom BCM33xx SoC family currently only works with following models, using the target BCM63xx:
  • 3368

• We have no GPL'd drivers for Ethernet or DOCSIS so this makes the board pretty useless

Broadcom33xx SoC integrates DOCSIS/EuroDOCSIS features and routing.

There are many 33xx variants. Only those with a TLB will be supported:

This chip does not include a CPU itself.

Known platforms:

• 3Com HomeConnect Cable Modem
• Aastra PipeRider HM200
• Ambit 60098E/U
• Arris CM200[U]
• Askey CME03x
• Cisco uBR924
• Com21 DOXport 1010
• E-Tech ICE 200
• E-Tech ITCM
• GVC USB Cable Modem
• Motorola SURFboard 3100A/B
• Samsung InfoRanger ITCM/SCM-110R
• Thomson RCA DCM 205/215/225
• Zyxel Prestige 941

This chip seems to be a general-purpose MIPS CPU. It is usually included with other platforms like bcm47xx and such.

Known platforms:

• Motorola SURFboard 4200
• Hitron BRG-3520

http://www.datasheetcatalog.org/datasheets2/15/155898_1.pdf

Used in the SB4200 cable modem

Known platforms:

• Motorola SURFboard 5100
• Motorola SBG900E
• Scientific-Atlanta WebStar DPX-2100
• Thomson TCM390

Known platforms:

• Motorola SURFboard 5101
• Scientific-Atlanta WebStar DPC2100
• Scientific-Atlanta WebStar EPX2203

Known platforms:

• Motorola SURFboard 4000/410x
• Ambit 60218P
• Ambit 60194E
• Askey CME063
• Com21 DOXport 1110
• Hitron BRG-3510
• Icable ICS-110
• Linksys BEFCMUH4/BEFCMU10
• Thomson RCA DCM 235/305
• USRobotics USR6000

MIPS R3000 CPU without a TLB (random register always reads a 0)

Note: Ralf says this is just mostly R3000-*compatible*, so -march=mips32 is safer.

http://www.datasheetcatalog.org/datasheets/134/404172_DS.pdf

read_c0_prid() ⇒ 0x28000

NS16550 serial UART

i82559 Ethernet

Used in the SB4100 cable modem

Known platforms:

• Netgear CVG834G
• Scientific-Atlanta WebStar DPX/EPC 2203
• Cisco EPC2425
• Thomson AGC905

Known platforms:

• Cisco DPC3212/EPC3212
• Cisco DPC3825/EPC3825
• Cisco EPC3925
• Netgear CG3100v3
• Motorola SBG6580
• Netgear CG3100
• Thomson TWG870

Firmware and additional sources available for Technicolor TC7200

Firmware and additional sources available for Technicolor TC7210 and TC7230

The support for Broadcom 33xx is at this state :

• Linux 2.6.x booting before failing to find init on bcm3348 (SB4200)
• Linux 2.6.x booting to BusyBox shell on bcm3349 (WebSTAR DPC2100)

• Talk with Broadcom related vendors to make them release some sources

The Netgear CVG834G uses a bcm33xx chip and has GPL'd eCos. Netgear modified the Atlas driver in eCos to add the bcm3350.

• Technicolor opensourced some platforms: Github account of Technicolor
• Technicolor additional information for certain products Technicolor internal business website

Surfboard modems use a VxWorks bootloader. header