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149 lines
5.0 KiB
149 lines
5.0 KiB
11 years ago
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From 5b293ebe757213993ae93b6cbbf5e1d09b75ac2f Mon Sep 17 00:00:00 2001
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From: Hauke Mehrtens <hauke@hauke-m.de>
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Date: Tue, 4 Feb 2014 00:01:43 +0100
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Subject: [PATCH 1/3] ARM: BCM5301X: initial support for the BCM5301X/BCM470X
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SoCs with ARM CPU
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This patch adds support for the BCM5301X/BCM470X SoCs with an ARM CPUs.
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Currently just booting to a shell is working and nothing else, no
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Ethernet, wifi, flash, ...
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I have some pending patches to make Ethernet work for this device.
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Mostly device tree support for bcma is missing.
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This SoC is used in small office and home router with Broadcom SoCs
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it's internal name is Northstar. This code should support the BCM4707,
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BCM4708, BCM4709, BCM53010, BCM53011 and BCM53012 SoC. It uses one or
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two ARM Cortex A9 Cores, some highlights are 2 PCIe 2.0 controllers,
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4 Gigabit Ethernet MACs and a USB 3.0 host controller.
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This SoC uses a dual core CPU, but this is currently not implemented.
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More information about this SoC can be found here:
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http://www.anandtech.com/show/5925/broadcom-announces-bcm4708x-and-bcm5301x-socs-for-80211ac-routers
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Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
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Acked-by: Arnd Bergmann <arnd@arndb.de>
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Acked-by: Christian Daudt <bcm@fixthebug.org>
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Signed-off-by: Matt Porter <mporter@linaro.org>
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---
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Documentation/devicetree/bindings/arm/bcm4708.txt | 8 ++++++
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MAINTAINERS | 8 ++++++
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arch/arm/configs/multi_v7_defconfig | 1 +
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arch/arm/mach-bcm/Kconfig | 26 +++++++++++++++++++
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arch/arm/mach-bcm/Makefile | 1 +
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arch/arm/mach-bcm/bcm_5301x.c | 28 +++++++++++++++++++++
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6 files changed, 72 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/arm/bcm4708.txt
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create mode 100644 arch/arm/mach-bcm/bcm_5301x.c
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/arm/bcm4708.txt
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@@ -0,0 +1,8 @@
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+Broadcom BCM4708 device tree bindings
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+-------------------------------------------
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+
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+Boards with the BCM4708 SoC shall have the following properties:
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+
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+Required root node property:
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+
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+compatible = "brcm,bcm4708";
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--- a/MAINTAINERS
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+++ b/MAINTAINERS
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@@ -1883,6 +1883,14 @@ F: arch/arm/boot/dts/bcm2835*
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F: arch/arm/configs/bcm2835_defconfig
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F: drivers/*/*bcm2835*
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+BROADCOM BCM5301X ARM ARCHICTURE
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+M: Hauke Mehrtens <hauke@hauke-m.de>
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+L: linux-arm-kernel@lists.infradead.org
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+S: Maintained
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+F: arch/arm/mach-bcm/bcm_5301x.c
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+F: arch/arm/boot/dts/bcm5301x.dtsi
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+F: arch/arm/boot/dts/bcm470*
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+
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BROADCOM TG3 GIGABIT ETHERNET DRIVER
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M: Nithin Nayak Sujir <nsujir@broadcom.com>
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M: Michael Chan <mchan@broadcom.com>
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--- a/arch/arm/configs/multi_v7_defconfig
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+++ b/arch/arm/configs/multi_v7_defconfig
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@@ -11,6 +11,7 @@ CONFIG_ARCH_MVEBU=y
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CONFIG_MACH_ARMADA_370=y
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CONFIG_MACH_ARMADA_XP=y
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CONFIG_ARCH_BCM=y
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+CONFIG_ARCH_BCM_5301X=y
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CONFIG_ARCH_BCM_MOBILE=y
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CONFIG_ARCH_BERLIN=y
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CONFIG_MACH_BERLIN_BG2=y
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--- a/arch/arm/mach-bcm/Kconfig
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+++ b/arch/arm/mach-bcm/Kconfig
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@@ -32,6 +32,32 @@ config ARCH_BCM_MOBILE
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BCM11130, BCM11140, BCM11351, BCM28145 and
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BCM28155 variants.
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+config ARCH_BCM_5301X
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+ bool "Broadcom BCM470X / BCM5301X ARM SoC" if ARCH_MULTI_V7
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+ depends on MMU
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+ select ARM_GIC
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+ select CACHE_L2X0
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+ select HAVE_ARM_SCU if SMP
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+ select HAVE_ARM_TWD if SMP
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+ select HAVE_SMP
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+ select COMMON_CLK
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+ select GENERIC_CLOCKEVENTS
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+ select ARM_GLOBAL_TIMER
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+ select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
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+ select MIGHT_HAVE_PCI
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+ help
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+ Support for Broadcom BCM470X and BCM5301X SoCs with ARM CPU cores.
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+
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+ This is a network SoC line mostly used in home routers and
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+ wifi access points, it's internal name is Northstar.
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+ This inclused the following SoC: BCM53010, BCM53011, BCM53012,
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+ BCM53014, BCM53015, BCM53016, BCM53017, BCM53018, BCM4707,
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+ BCM4708 and BCM4709.
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+
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+ Do not confuse this with the BCM4760 which is a totally
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+ different SoC or with the older BCM47XX and BCM53XX based
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+ network SoC using a MIPS CPU, they are supported by arch/mips/bcm47xx
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+
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endmenu
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endif
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--- a/arch/arm/mach-bcm/Makefile
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+++ b/arch/arm/mach-bcm/Makefile
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@@ -13,3 +13,4 @@
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obj-$(CONFIG_ARCH_BCM_MOBILE) := board_bcm281xx.o bcm_kona_smc.o bcm_kona_smc_asm.o kona.o
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plus_sec := $(call as-instr,.arch_extension sec,+sec)
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AFLAGS_bcm_kona_smc_asm.o :=-Wa,-march=armv7-a$(plus_sec)
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+obj-$(CONFIG_ARCH_BCM_5301X) += bcm_5301x.o
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--- /dev/null
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+++ b/arch/arm/mach-bcm/bcm_5301x.c
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@@ -0,0 +1,28 @@
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+/*
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+ * Broadcom BCM470X / BCM5301X ARM platform code.
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+ *
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+ * Copyright 2013 Hauke Mehrtens <hauke@hauke-m.de>
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+ *
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+ * Licensed under the GNU/GPL. See COPYING for details.
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+ */
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+#include <linux/of_platform.h>
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+#include <asm/hardware/cache-l2x0.h>
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+
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+#include <asm/mach/arch.h>
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+
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+
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+static void __init bcm5301x_dt_init(void)
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+{
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+ l2x0_of_init(0, ~0UL);
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+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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+}
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+
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+static const char __initconst *bcm5301x_dt_compat[] = {
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+ "brcm,bcm4708",
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+ NULL,
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+};
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+
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+DT_MACHINE_START(BCM5301X, "BCM5301X")
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+ .init_machine = bcm5301x_dt_init,
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+ .dt_compat = bcm5301x_dt_compat,
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+MACHINE_END
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