45 lines
1.9 KiB
Diff
45 lines
1.9 KiB
Diff
From 4e0ab3269a6d260a41a3673157753147f5f71341 Mon Sep 17 00:00:00 2001
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From: Hauke Mehrtens <hauke@hauke-m.de>
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Date: Sun, 4 May 2014 13:19:20 +0200
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Subject: [PATCH 03/17] bcm47xx-sprom: add Broadcom sprom parser driver
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This driver needs an nvram driver and fetches the sprom values from the
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nvram and provides it to any other driver. The calibration data for the
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wifi chip the mac address and some more board description data is
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stores in the sprom.
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This is based on a copy of arch/mips/bcm47xx/sprom.c and my plan is to
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make the bcm47xx MIPS SoCs also use this driver some time later.
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Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
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---
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.../devicetree/bindings/misc/bcm47xx-sprom.txt | 16 +
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drivers/misc/Kconfig | 11 +
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drivers/misc/Makefile | 1 +
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drivers/misc/bcm47xx-sprom.c | 690 +++++++++++++++++++++
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4 files changed, 718 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt
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create mode 100644 drivers/misc/bcm47xx-sprom.c
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--- a/drivers/firmware/broadcom/Kconfig
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+++ b/drivers/firmware/broadcom/Kconfig
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@@ -9,3 +9,14 @@ config BCM47XX_NVRAM
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This driver provides an easy way to get value of requested parameter.
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It simply reads content of NVRAM and parses it. It doesn't control any
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hardware part itself.
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+
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+config BCM47XX_SPROM
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+ bool "Broadcom SPROM driver"
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+ depends on BCM47XX_NVRAM
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+ help
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+ Broadcom devices store configuration data in SPROM. Accessing it is
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+ specific to the bus host type, e.g. PCI(e) devices have it mapped in
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+ a PCI BAR.
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+ In case of SoC devices SPROM content is stored on a flash used by
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+ bootloader firmware CFE. This driver provides method to ssb and bcma
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+ drivers to read SPROM on SoC.
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--- a/drivers/firmware/broadcom/Makefile
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+++ b/drivers/firmware/broadcom/Makefile
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@@ -1 +1,2 @@
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obj-$(CONFIG_BCM47XX_NVRAM) += bcm47xx_nvram.o
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+obj-$(CONFIG_BCM47XX_SPROM) += bcm47xx_sprom.o
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