[PATCH v2 1/5] ARM: BCM63XX: add basic support for the Broadcom BCM63138 DSL SoC

Florian Fainelli
2014-08-15T00:11:23Z

This patch adds basic support for the Broadcom BCM63138 DSL SoC which is
using a dual-core Cortex A9 system. Add the very minimum required code
boot Linux on this SoC.

Signed-off-by: Florian Fainelli <f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
Changes in v2:
- removed custom map_io() function since it is not necessary
- removed custom PL310 cache controller initialization, this has
been submitted as part of more general patch

.../devicetree/bindings/arm/bcm/bcm63138.txt | 9 +++++
arch/arm/mach-bcm/Kconfig | 17 +++++++++
arch/arm/mach-bcm/Makefile | 3 ++
arch/arm/mach-bcm/bcm63xx.c | 41 ++++++++++++++++++++++
4 files changed, 70 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/bcm/bcm63138.txt
create mode 100644 arch/arm/mach-bcm/bcm63xx.c

diff --git a/Documentation/devicetree/bindings/arm/bcm/bcm63138.txt b/Documentation/devicetree/bindings/arm/bcm/bcm63138.txt
new file mode 100644
index 000000000000..bd49987a8812
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/bcm/bcm63138.txt
@@ -0,0 +1,9 @@
+Broadcom BCM63138 DSL System-on-a-Chip device tree bindings
+-----------------------------------------------------------
+
+Boards compatible with the BCM63138 DSL System-on-a-Chip should have the
+following properties:
+
+Required root node property:
+
+compatible: should be "brcm,bcm63138"
diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
index fc938005ad39..2abad742516d 100644
--- a/arch/arm/mach-bcm/Kconfig
+++ b/arch/arm/mach-bcm/Kconfig
@@ -99,6 +99,23 @@ config ARCH_BCM_5301X
different SoC or with the older BCM47XX and BCM53XX based
network SoC using a MIPS CPU, they are supported by arch/mips/bcm47xx

+config ARCH_BCM_63XX
+ bool "Broadcom BCM63xx DSL SoC" if ARCH_MULTI_V7
+ depends on MMU
+ select ARM_ERRATA_754322
+ select ARM_ERRATA_764369 if SMP
+ select ARM_GIC
+ select ARM_GLOBAL_TIMER
+ select CACHE_L2X0
+ select HAVE_ARM_ARCH_TIMER
+ select HAVE_ARM_TWD if SMP
+ select HAVE_ARM_SCU if SMP
+ select HAVE_SMP
+ help
+ This enables support for systems based on Broadcom DSL SoCs.
+ It currently supports the 'BCM63XX' ARM-based family, which includes
+ the BCM63138 variant.
+
config ARCH_BRCMSTB
bool "Broadcom BCM7XXX based boards" if ARCH_MULTI_V7
depends on MMU
diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
index 67c492aabf4d..cbbb0be54554 100644
--- a/arch/arm/mach-bcm/Makefile
+++ b/arch/arm/mach-bcm/Makefile
@@ -34,6 +34,9 @@ obj-$(CONFIG_ARCH_BCM2835) += board_bcm2835.o
# BCM5301X
obj-$(CONFIG_ARCH_BCM_5301X) += bcm_5301x.o

+# BCM63XXx
+obj-$(CONFIG_ARCH_BCM_63XX) := bcm63xx.o
+
ifeq ($(CONFIG_ARCH_BRCMSTB),y)
obj-y += brcmstb.o
obj-$(CONFIG_SMP) += headsmp-brcmstb.o platsmp-brcmstb.o
diff --git a/arch/arm/mach-bcm/bcm63xx.c b/arch/arm/mach-bcm/bcm63xx.c
new file mode 100644
index 000000000000..be69f414ebf0
--- /dev/null
+++ b/arch/arm/mach-bcm/bcm63xx.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/of_platform.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/clocksource.h>
+#include <linux/irqchip.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <asm/hardware/cache-l2x0.h>
+
+static void __init bcm63xx_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL,
+ &platform_bus);
+ l2x0_of_init(0, ~0);
+}
+
+static const char * const bcm63xx_dt_compat[] = {
+ "brcm,bcm63138",
+ NULL
+};
+
+DT_MACHINE_START(BCM63XXX_DT, "BCM63xx DSL SoC")
+ .init_machine = bcm63xx_init,
+ .dt_compat = bcm63xx_dt_compat,
+MACHINE_END