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ARM: BCM5301X: initial support for the BCM5301X/BCM470X SoCs with ARM CPU

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This patch adds support for the BCM5301X/BCM470X SoCs with an ARM CPUs.
Currently just booting to a shell is working and nothing else, no
Ethernet, wifi, flash, ...
I have some pending patches to make Ethernet work for this device.
Mostly device tree support for bcma is missing.

This SoC is used in small office and home router with Broadcom SoCs
it's internal name is Northstar. This code should support the BCM4707,
BCM4708, BCM4709, BCM53010, BCM53011 and BCM53012 SoC. It uses one or
two ARM Cortex A9 Cores, some highlights are 2 PCIe 2.0 controllers,
4 Gigabit Ethernet MACs and a USB 3.0 host controller.

This SoC uses a dual core CPU, but this is currently not implemented.
More information about this SoC can be found here:
http://www.anandtech.com/show/5925/broadcom-announces-bcm4708x-and-bcm5301x-socs-for-80211ac-routers

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Christian Daudt <bcm@fixthebug.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
This commit is contained in:
Hauke Mehrtens 2014-02-04 00:01:43 +01:00 committed by Matt Porter
parent c43bad6f76
commit 5b293ebe75
6 changed files with 72 additions and 0 deletions
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8
Documentation/devicetree/bindings/arm/bcm4708.txt Normal file
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@ -0,0 +1,8 @@
Broadcom BCM4708 device tree bindings
-------------------------------------------
Boards with the BCM4708 SoC shall have the following properties:
Required root node property:
compatible = "brcm,bcm4708";

8
MAINTAINERS
View File

@ -1880,6 +1880,14 @@ F: arch/arm/boot/dts/bcm2835*
F: arch/arm/configs/bcm2835_defconfig
F: drivers/*/*bcm2835*
BROADCOM BCM5301X ARM ARCHICTURE
M: Hauke Mehrtens <hauke@hauke-m.de>
L: linux-arm-kernel@lists.infradead.org
S: Maintained
F: arch/arm/mach-bcm/bcm_5301x.c
F: arch/arm/boot/dts/bcm5301x.dtsi
F: arch/arm/boot/dts/bcm470*
BROADCOM TG3 GIGABIT ETHERNET DRIVER
M: Nithin Nayak Sujir <nsujir@broadcom.com>
M: Michael Chan <mchan@broadcom.com>

1
arch/arm/configs/multi_v7_defconfig
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@ -11,6 +11,7 @@ CONFIG_ARCH_MVEBU=y
CONFIG_MACH_ARMADA_370=y
CONFIG_MACH_ARMADA_XP=y
CONFIG_ARCH_BCM=y
CONFIG_ARCH_BCM_5301X=y
CONFIG_ARCH_BCM_MOBILE=y
CONFIG_ARCH_BERLIN=y
CONFIG_MACH_BERLIN_BG2=y

26
arch/arm/mach-bcm/Kconfig
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@ -31,6 +31,32 @@ config ARCH_BCM_MOBILE
BCM11130, BCM11140, BCM11351, BCM28145 and
BCM28155 variants.
config ARCH_BCM_5301X
bool "Broadcom BCM470X / BCM5301X ARM SoC" if ARCH_MULTI_V7
depends on MMU
select ARM_GIC
select CACHE_L2X0
select HAVE_ARM_SCU if SMP
select HAVE_ARM_TWD if SMP
select HAVE_SMP
select COMMON_CLK
select GENERIC_CLOCKEVENTS
select ARM_GLOBAL_TIMER
select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
select MIGHT_HAVE_PCI
help
Support for Broadcom BCM470X and BCM5301X SoCs with ARM CPU cores.
This is a network SoC line mostly used in home routers and
wifi access points, it's internal name is Northstar.
This inclused the following SoC: BCM53010, BCM53011, BCM53012,
BCM53014, BCM53015, BCM53016, BCM53017, BCM53018, BCM4707,
BCM4708 and BCM4709.
Do not confuse this with the BCM4760 which is a totally
different SoC or with the older BCM47XX and BCM53XX based
network SoC using a MIPS CPU, they are supported by arch/mips/bcm47xx
endmenu
endif

1
arch/arm/mach-bcm/Makefile
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@ -13,3 +13,4 @@
obj-$(CONFIG_ARCH_BCM_MOBILE) := board_bcm281xx.o bcm_kona_smc.o bcm_kona_smc_asm.o kona.o
plus_sec := $(call as-instr,.arch_extension sec,+sec)
AFLAGS_bcm_kona_smc_asm.o :=-Wa,-march=armv7-a$(plus_sec)
obj-$(CONFIG_ARCH_BCM_5301X) += bcm_5301x.o

28
arch/arm/mach-bcm/bcm_5301x.c Normal file
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@ -0,0 +1,28 @@
/*
* Broadcom BCM470X / BCM5301X ARM platform code.
*
* Copyright 2013 Hauke Mehrtens <hauke@hauke-m.de>
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
#include <linux/of_platform.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/arch.h>
static void __init bcm5301x_dt_init(void)
{
l2x0_of_init(0, ~0UL);
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static const char __initconst *bcm5301x_dt_compat[] = {
"brcm,bcm4708",
NULL,
};
DT_MACHINE_START(BCM5301X, "BCM5301X")
.init_machine = bcm5301x_dt_init,
.dt_compat = bcm5301x_dt_compat,
MACHINE_END