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author | Christian Daudt <csd@broadcom.com> | 2012-11-19 17:46:10 (GMT) |
---|---|---|
committer | Olof Johansson <olof@lixom.net> | 2012-11-20 06:39:07 (GMT) |
commit | 8ac49e0485bb79223a111b366a3b1f5ec9148729 (patch) | |
tree | 8846daeeae2c1b70c5e5fe491979c28039054d08 /arch/arm/mach-bcm | |
parent | 0056a985fab537e161405a48dc8f8da0b47e0767 (diff) | |
download | linux-8ac49e0485bb79223a111b366a3b1f5ec9148729.tar.xz |
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/Kconfig | 19 | ||||
-rw-r--r-- | arch/arm/mach-bcm/Makefile | 13 | ||||
-rw-r--r-- | arch/arm/mach-bcm/board_bcm.c | 57 |
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 0000000..48705c1 --- /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 0000000..bbf4122 --- /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 0000000..3a62f1b --- /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 |