14 files changed, 355 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/arm/bcm2835.txt b/Documentation/devicetree/bindings/arm/bcm2835.txt
new file mode 100644
index 000000000000..ac683480c486
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/bcm2835.txt
@@ -0,0 +1,8 @@
+Broadcom BCM2835 device tree bindings
+-------------------------------------------
+
+Boards with the BCM2835 SoC shall have the following properties:
+
+Required root node property:
+
+compatible = "brcm,bcm2835";
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index db4d3af3643c..4f293e5571f0 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -10,6 +10,7 @@ apm	Applied Micro Circuits Corporation (APM)
 arm     ARM Ltd.
 atmel   Atmel Corporation
 bosch   Bosch Sensortec GmbH
+brcm    Broadcom Corporation
 cavium  Cavium, Inc.
 chrp    Common Hardware Reference Platform
 cortina Cortina Systems, Inc.
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 2f88d8d97701..6524497609fa 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -350,6 +350,23 @@ config ARCH_AT91
           This enables support for systems based on Atmel
           AT91RM9200 and AT91SAM9* processors.
 
+config ARCH_BCM2835
+        bool "Broadcom BCM2835 family"
+        select ARCH_WANT_OPTIONAL_GPIOLIB
+        select ARM_AMBA
+        select ARM_ERRATA_411920
+        select ARM_TIMER_SP804
+        select CLKDEV_LOOKUP
+        select COMMON_CLK
+        select CPU_V6
+        select GENERIC_CLOCKEVENTS
+        select MULTI_IRQ_HANDLER
+        select SPARSE_IRQ
+        select USE_OF
+        help
+          This enables support for the Broadcom BCM2835 SoC. This SoC is
+          use in the Raspberry Pi, and Roku 2 devices.
+
 config ARCH_BCMRING
         bool "Broadcom BCMRING"
         depends on MMU
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 30eae87ead6d..17b0d5fc0c84 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -136,6 +136,7 @@ textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 # Machine directory name.  This list is sorted alphanumerically
 # by CONFIG_* macro name.
 machine-$(CONFIG_ARCH_AT91)             := at91
+machine-$(CONFIG_ARCH_BCM2835)          := bcm2835
 machine-$(CONFIG_ARCH_BCMRING)          := bcmring
 machine-$(CONFIG_ARCH_CLPS711X)         := clps711x
 machine-$(CONFIG_ARCH_CNS3XXX)          := cns3xxx
diff --git a/arch/arm/boot/dts/bcm2835-rpi-b.dts b/arch/arm/boot/dts/bcm2835-rpi-b.dts
new file mode 100644
index 000000000000..7dd860f83f96
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts
@@ -0,0 +1,12 @@
+/dts-v1/;
+/memreserve/ 0x0c000000 0x04000000;
+/include/ "bcm2835.dtsi"
+
+/ {
+        compatible = "raspberrypi,model-b", "brcm,bcm2835";
+        model = "Raspberry Pi Model B";
+
+        memory {
+                reg = <0 0x10000000>;
+        };
+};
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
new file mode 100644
index 000000000000..a31cb40ef684
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2835.dtsi
@@ -0,0 +1,17 @@
+/include/ "skeleton.dtsi"
+
+/ {
+        compatible = "brcm,bcm2835";
+        model = "BCM2835";
+
+        chosen {
+                bootargs = "earlyprintk";
+        };
+
+        soc {
+                compatible = "simple-bus";
+                #address-cells = <1>;
+                #size-cells = <1>;
+                ranges = <0x7e000000 0x20000000 0x02000000>;
+        };
+};
diff --git a/arch/arm/configs/bcm2835_defconfig b/arch/arm/configs/bcm2835_defconfig
new file mode 100644
index 000000000000..7aea70253c63
--- /dev/null
+++ b/arch/arm/configs/bcm2835_defconfig
@@ -0,0 +1,95 @@
+CONFIG_EXPERIMENTAL=y
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_SYSVIPC=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_FHANDLE=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_LOG_BUF_SHIFT=18
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CPUSETS=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_RESOURCE_COUNTERS=y
+CONFIG_CGROUP_PERF=y
+CONFIG_CFS_BANDWIDTH=y
+CONFIG_RT_GROUP_SCHED=y
+CONFIG_NAMESPACES=y
+CONFIG_SCHED_AUTOGROUP=y
+CONFIG_RELAY=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_RD_BZIP2=y
+CONFIG_RD_LZMA=y
+CONFIG_RD_XZ=y
+CONFIG_RD_LZO=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_EMBEDDED=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_PROFILING=y
+CONFIG_OPROFILE=y
+CONFIG_JUMP_LABEL=y
+# CONFIG_BLOCK is not set
+CONFIG_ARCH_BCM2835=y
+CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_AEABI=y
+CONFIG_COMPACTION=y
+CONFIG_KSM=y
+CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
+CONFIG_CLEANCACHE=y
+CONFIG_SECCOMP=y
+CONFIG_CC_STACKPROTECTOR=y
+CONFIG_KEXEC=y
+CONFIG_CRASH_DUMP=y
+CONFIG_VFP=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+# CONFIG_SUSPEND is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+# CONFIG_STANDALONE is not set
+# CONFIG_INPUT_MOUSEDEV is not set
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_UNIX98_PTYS is not set
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_DEVKMEM is not set
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_TTY_PRINTK=y
+# CONFIG_HW_RANDOM is not set
+# CONFIG_HWMON is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_IOMMU_SUPPORT is not set
+# CONFIG_FILE_LOCKING is not set
+# CONFIG_DNOTIFY is not set
+# CONFIG_INOTIFY_USER is not set
+# CONFIG_PROC_FS is not set
+# CONFIG_SYSFS is not set
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_PRINTK_TIME=y
+# CONFIG_ENABLE_WARN_DEPRECATED is not set
+# CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_UNUSED_SYMBOLS=y
+CONFIG_LOCKUP_DETECTOR=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_BOOT_PRINTK_DELAY=y
+CONFIG_SCHED_TRACER=y
+CONFIG_STACK_TRACER=y
+CONFIG_FUNCTION_PROFILER=y
+CONFIG_DYNAMIC_DEBUG=y
+CONFIG_KGDB=y
+CONFIG_KGDB_KDB=y
+CONFIG_TEST_KSTRTOX=y
+CONFIG_STRICT_DEVMEM=y
+CONFIG_DEBUG_LL=y
+CONFIG_EARLY_PRINTK=y
+# CONFIG_XZ_DEC_X86 is not set
+# CONFIG_XZ_DEC_POWERPC is not set
+# CONFIG_XZ_DEC_IA64 is not set
+# CONFIG_XZ_DEC_ARM is not set
+# CONFIG_XZ_DEC_ARMTHUMB is not set
+# CONFIG_XZ_DEC_SPARC is not set
diff --git a/arch/arm/mach-bcm2835/Makefile b/arch/arm/mach-bcm2835/Makefile
new file mode 100644
index 000000000000..4c3892fe02c3
--- /dev/null
+++ b/arch/arm/mach-bcm2835/Makefile
@@ -0,0 +1 @@
+obj-y += bcm2835.o
diff --git a/arch/arm/mach-bcm2835/Makefile.boot b/arch/arm/mach-bcm2835/Makefile.boot
new file mode 100644
index 000000000000..0831fd1764e7
--- /dev/null
+++ b/arch/arm/mach-bcm2835/Makefile.boot
@@ -0,0 +1,5 @@
+   zreladdr-y := 0x00008000
+params_phys-y := 0x00000100
+initrd_phys-y := 0x00800000
+
+dtb-y += bcm2835-rpi-b.dtb
diff --git a/arch/arm/mach-bcm2835/bcm2835.c b/arch/arm/mach-bcm2835/bcm2835.c
new file mode 100644
index 000000000000..f6b36b4b5921
--- /dev/null
+++ b/arch/arm/mach-bcm2835/bcm2835.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2010 Broadcom
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <asm/exception.h>
+
+#include <mach/bcm2835_soc.h>
+
+static struct map_desc io_map __initdata = {
+        .virtual = BCM2835_PERIPH_VIRT,
+        .pfn = __phys_to_pfn(BCM2835_PERIPH_PHYS),
+        .length = BCM2835_PERIPH_SIZE,
+        .type = MT_DEVICE
+};
+
+void __init bcm2835_map_io(void)
+{
+        iotable_init(&io_map, 1);
+}
+
+void __init bcm2835_init_irq(void)
+{
+}
+
+asmlinkage void __exception_irq_entry bcm2835_handle_irq(struct pt_regs *regs)
+{
+}
+
+void __init bcm2835_init(void)
+{
+        int ret;
+
+        ret = of_platform_populate(NULL, of_default_bus_match_table, NULL,
+                                   NULL);
+        if (ret) {
+                pr_err("of_platform_populate failed: %d\n", ret);
+                BUG();
+        }
+}
+
+static void __init bcm2835_timer_init(void)
+{
+}
+
+struct sys_timer bcm2835_timer = {
+        .init = bcm2835_timer_init
+};
+
+static const char * const bcm2835_compat[] = {
+        "brcm,bcm2835",
+        NULL
+};
+
+DT_MACHINE_START(BCM2835, "BCM2835")
+        .map_io = bcm2835_map_io,
+        .init_irq = bcm2835_init_irq,
+        .handle_irq = bcm2835_handle_irq,
+        .init_machine = bcm2835_init,
+        .timer = &bcm2835_timer,
+        .dt_compat = bcm2835_compat
+MACHINE_END
diff --git a/arch/arm/mach-bcm2835/include/mach/bcm2835_soc.h b/arch/arm/mach-bcm2835/include/mach/bcm2835_soc.h
new file mode 100644
index 000000000000..d4dfcf7a9cda
--- /dev/null
+++ b/arch/arm/mach-bcm2835/include/mach/bcm2835_soc.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2012 Stephen Warren
+ *
+ * Derived from code:
+ * Copyright (C) 2010 Broadcom
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __MACH_BCM2835_BCM2835_SOC_H__
+#define __MACH_BCM2835_BCM2835_SOC_H__
+
+#include <asm/sizes.h>
+
+#define BCM2835_PERIPH_PHYS     0x20000000
+#define BCM2835_PERIPH_VIRT     0xf0000000
+#define BCM2835_PERIPH_SIZE     SZ_16M
+#define BCM2835_DEBUG_PHYS      0x20201000
+#define BCM2835_DEBUG_VIRT      0xf0201000
+
+#endif
diff --git a/arch/arm/mach-bcm2835/include/mach/debug-macro.S b/arch/arm/mach-bcm2835/include/mach/debug-macro.S
new file mode 100644
index 000000000000..8a161e44ae28
--- /dev/null
+++ b/arch/arm/mach-bcm2835/include/mach/debug-macro.S
@@ -0,0 +1,21 @@
+/*
+ * Debugging macro include header
+ *
+ * Copyright (C) 2010 Broadcom
+ * Copyright (C) 1994-1999 Russell King
+ * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <mach/bcm2835_soc.h>
+
+        .macro  addruart, rp, rv, tmp
+        ldr     \rp, =BCM2835_DEBUG_PHYS
+        ldr     \rv, =BCM2835_DEBUG_VIRT
+        .endm
+
+#include <asm/hardware/debug-pl01x.S>
diff --git a/arch/arm/mach-bcm2835/include/mach/timex.h b/arch/arm/mach-bcm2835/include/mach/timex.h
new file mode 100644
index 000000000000..6d021e136ae3
--- /dev/null
+++ b/arch/arm/mach-bcm2835/include/mach/timex.h
@@ -0,0 +1,26 @@
+/*
+ *  BCM2835 system clock frequency
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __ASM_ARCH_TIMEX_H
+#define __ASM_ARCH_TIMEX_H
+
+#define CLOCK_TICK_RATE         (1000000)
+
+#endif
diff --git a/arch/arm/mach-bcm2835/include/mach/uncompress.h b/arch/arm/mach-bcm2835/include/mach/uncompress.h
new file mode 100644
index 000000000000..cc46dcc72377
--- /dev/null
+++ b/arch/arm/mach-bcm2835/include/mach/uncompress.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2010 Broadcom
+ * Copyright (C) 2003 ARM Limited
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/io.h>
+#include <linux/amba/serial.h>
+#include <mach/bcm2835_soc.h>
+
+#define UART0_BASE BCM2835_DEBUG_PHYS
+
+#define BCM2835_UART_DR IOMEM(UART0_BASE + UART01x_DR)
+#define BCM2835_UART_FR IOMEM(UART0_BASE + UART01x_FR)
+#define BCM2835_UART_CR IOMEM(UART0_BASE + UART011_CR)
+
+static inline void putc(int c)
+{
+        while (__raw_readl(BCM2835_UART_FR) & UART01x_FR_TXFF)
+                barrier();
+
+        __raw_writel(c, BCM2835_UART_DR);
+}
+
+static inline void flush(void)
+{
+        int fr;
+
+        do {
+                fr = __raw_readl(BCM2835_UART_FR);
+                barrier();
+        } while ((fr & (UART011_FR_TXFE | UART01x_FR_BUSY)) != UART011_FR_TXFE);
+}
+
+#define arch_decomp_setup()
+#define arch_decomp_wdog()