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authorChristian Daudt <csd@broadcom.com>2012-11-19 09:46:10 -0800
committerOlof Johansson <olof@lixom.net>2012-11-19 22:39:07 -0800
commit8ac49e0485bb79223a111b366a3b1f5ec9148729 (patch)
tree8846daeeae2c1b70c5e5fe491979c28039054d08 /arch/arm/mach-bcm
parent0056a985fab537e161405a48dc8f8da0b47e0767 (diff)
Add support for generic BCM SoC chipsets
In order to start upstreaming Broadcom SoC support, create a starting hierarchy, arch and dts files. The first support SoC family that is planned is the BCM281XX (BCM11130/11140/11351/28145/28155) family of dual A9 mobile SoC cores. This code is just the skeleton code for get the machine upstreamed. It has been made MULTIPLATFORM compatible. Next steps ---------- Upstream a basic set of drivers - sufficient for a console boot to ramdisk. These will includer timer, gpio, i2c drivers. After this basic set, we will proceed with a more comprehensive set of drivers for the 281XX SoC family. v2 patch mods -------- - Remove l2x0_of_init call as there were problems with the code. A separate patch will be submitted with cache init code - Rename capri files and refs to bcm281xx-based names - Add bcm281xx binding doc - various misc cleanups v3 patch mods ------------- - Remove extra #include lines - Remove remaining references to capri - dt uart chipset string added - cleaned up chip # references v4 patch mods ------------- - swap order of compatible definitions for uart - fix typo v5 patch mods ------------- - Rename bcm281xx to bcm11351 in dts+code, leaving references to bcm281xx only in help+comments. v6 patch mods ------------- - fix typo in uart 'compatible' string Signed-off-by: Christian Daudt <csd@broadcom.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-bcm')
-rw-r--r--arch/arm/mach-bcm/Kconfig19
-rw-r--r--arch/arm/mach-bcm/Makefile13
-rw-r--r--arch/arm/mach-bcm/board_bcm.c57
3 files changed, 89 insertions, 0 deletions
diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
new file mode 100644
index 000000000000..48705c10a0fe
--- /dev/null
+++ b/arch/arm/mach-bcm/Kconfig
@@ -0,0 +1,19 @@
+config ARCH_BCM
+ bool "Broadcom SoC" if ARCH_MULTI_V7
+ depends on MMU
+ select ARCH_REQUIRE_GPIOLIB
+ select ARM_ERRATA_754322
+ select ARM_ERRATA_764369 if SMP
+ select ARM_GIC
+ select CPU_V7
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_GPIO
+ select GENERIC_TIME
+ select GPIO_BCM
+ select SPARSE_IRQ
+ select TICK_ONESHOT
+ help
+ This enables support for system based on Broadcom SoCs.
+ It currently supports the 'BCM281XX' family, which includes
+ BCM11130, BCM11140, BCM11351, BCM28145 and
+ BCM28155 variants.
diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
new file mode 100644
index 000000000000..bbf412261e5e
--- /dev/null
+++ b/arch/arm/mach-bcm/Makefile
@@ -0,0 +1,13 @@
+#
+# Copyright (C) 2012 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.
+
+obj-$(CONFIG_ARCH_BCM) := board_bcm.o
diff --git a/arch/arm/mach-bcm/board_bcm.c b/arch/arm/mach-bcm/board_bcm.c
new file mode 100644
index 000000000000..3a62f1b1cabc
--- /dev/null
+++ b/arch/arm/mach-bcm/board_bcm.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2012 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_irq.h>
+#include <linux/of_platform.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach/arch.h>
+#include <asm/hardware/gic.h>
+
+#include <asm/mach/time.h>
+
+static const struct of_device_id irq_match[] = {
+ {.compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+ {}
+};
+
+static void timer_init(void)
+{
+}
+
+static struct sys_timer timer = {
+ .init = timer_init,
+};
+
+static void __init init_irq(void)
+{
+ of_irq_init(irq_match);
+}
+
+static void __init board_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL,
+ &platform_bus);
+}
+
+static const char * const bcm11351_dt_compat[] = { "bcm,bcm11351", NULL, };
+
+DT_MACHINE_START(BCM11351_DT, "Broadcom Application Processor")
+ .init_irq = init_irq,
+ .timer = &timer,
+ .init_machine = board_init,
+ .dt_compat = bcm11351_dt_compat,
+ .handle_irq = gic_handle_irq,
+MACHINE_END