diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/Kconfig | 17 | ||||
| -rw-r--r-- | arch/arm/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/boot/dts/bcm2835-rpi-b.dts | 12 | ||||
| -rw-r--r-- | arch/arm/boot/dts/bcm2835.dtsi | 17 | ||||
| -rw-r--r-- | arch/arm/configs/bcm2835_defconfig | 95 | ||||
| -rw-r--r-- | arch/arm/mach-bcm2835/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-bcm2835/Makefile.boot | 5 | ||||
| -rw-r--r-- | arch/arm/mach-bcm2835/bcm2835.c | 77 | ||||
| -rw-r--r-- | arch/arm/mach-bcm2835/include/mach/bcm2835_soc.h | 29 | ||||
| -rw-r--r-- | arch/arm/mach-bcm2835/include/mach/debug-macro.S | 21 | ||||
| -rw-r--r-- | arch/arm/mach-bcm2835/include/mach/timex.h | 26 | ||||
| -rw-r--r-- | arch/arm/mach-bcm2835/include/mach/uncompress.h | 45 |
12 files changed, 346 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 2f88d8d..6524497 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 30eae87..17b0d5f 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 0000000..7dd860f --- /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 0000000..a31cb40 --- /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 0000000..7aea702 --- /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 0000000..4c3892f --- /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 0000000..0831fd1 --- /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 0000000..f6b36b4 --- /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 0000000..d4dfcf7 --- /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 0000000..8a161e4 --- /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 0000000..6d021e1 --- /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 0000000..cc46dcc --- /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() |
