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Broadcom ARM home routers store SPROM content in NVRAM just like MIPS ones. To share SPROM code we need to move it out of arch/mips/ to some common place. We already have bcm47xx_nvram in firmware path and SPROM should fit there as well. This driver is responsible for parsing SoC configuration data into a struct shared between ssb and bcma buses. This was tested with BCM4706 & BCM5357C0 (BCM47XX) and BCM4708A0 (ARCH_BCM_5301X). Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Cc: Hauke Mehrtens <hauke@hauke-m.de> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12210/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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config BCM47XX_NVRAM bool "Broadcom NVRAM driver" depends on BCM47XX || ARCH_BCM_5301X help 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.
config BCM47XX_SPROM bool "Broadcom SPROM driver" depends on BCM47XX_NVRAM help 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.