Broadcom home routers contain flash partition called "nvram" with all important hardware configuration as well as some minor user setup. NVRAM partition contains a text-like data representing name=value pairs. This driver provides an easy way to get value of requested parameter. It simply reads content of NVRAM and parses it. It doesn't control any hardware part itself.
Broadcom devices store configuration data in SPROM. Accessing it is specific to the bus host type, e.g. PCI(e) devices have it mapped in a PCI BAR. In case of SoC devices SPROM content is stored on a flash used by bootloader firmware CFE. This driver provides method to ssb and bcma drivers to read SPROM on SoC.
This module help to manage firmware on Broadcom BNXT device. The module registers on tee bus and invoke calls to manage firmware on BNXT device.