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These are So C devices with a Cortex R4 for processing the MAC and MLME layers and a proprietary Broadcom processor for the 802.11 physical layer.In April 2017, Google's Project Zero investigated Broadcom's So C Wi Fi stack and found that it lacked "all basic exploit mitigations - including stack cookies, safe unlinking and access permission protection," allowing "full device takeover by Wi-Fi proximity alone, requiring no user interaction." Since the release of the 2.6.26 kernel some Broadcom chips have kernel support but require external firmware to be built.According to the Raspberry Pi Foundation, this made it "the first ARM-based multimedia So C with fully functional, vendor-provided (as opposed to partial, reverse-engineered) fully open-source drivers", although due to substantial binary firmware code which must be executing in parallel with the operating system, and which executes independently and prior to loading of the operating system, this claim has not been universally accepted.Broadcom provided a Linux driver for their Broadcom Crystal HD, and they also hired Eric Anholt, a former Intel employee, to work on a free and open-source graphics device driver for their Video Core IV. It outsources all semiconductor manufacturing to Asian merchant foundries, such as Global Foundries, Semiconductor Manufacturing International Corporation, Silterra, TSMC and United Microelectronics Corporation.Another large market is hardware for switches: some vendors offer switching equipment based on Broadcom hardware and firmware (e.g.Dell Power Connect classics) while other well-known vendors do use the Broadcom hardware but write their own firmware.In 2003 the Free Software Foundation accused Broadcom of not complying with the GNU General Public License as Broadcom distributed GPL code in a driver for its 802.11g router chipset without making that code public.
The company also produces ICs for carrier access equipment, audio/video processors for digital set-top boxes and digital video recorders, Bluetooth and Wi-Fi transceivers and RF receivers/tuners for satellite TV.
Cisco eventually published source code for the firmware for its WRT54G wireless broadband router under the GPL-license.
In 2012 the Linux Foundation listed Broadcom as one of the Top 10 companies contributing to the development of the Linux Kernel for 2011, placing it in the top 5 percent of an estimated 226 contributing companies.
It was acquired by Avago Technologies in 2016 and currently operates as a wholly owned subsidiary of the merged entity called Broadcom Limited.
The division is headquartered in Irvine, California.
The latest Broadcom Trident ASIC is used in many high-speed 10Gb switches from the largest switch-vendors such as Cisco Nexus switches running NX-OS, Video Core is the GPU found on some systems-on-a-chip (So C)s by Broadcom, the most widely known one being the BCM2835 containing Video Core IV found in the Raspberry Pi. Broadcom "BCM43" series chips provide Wi Fi support in many Android and i Phone devices.