Commit 9ef9dc69 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (44 commits)
  [ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option
  [ARM] 4821/1: RealView: Remove the platform dependencies from localtimer.c
  [ARM] 4820/1: RealView: Select the timer IRQ at run-time
  [ARM] 4819/1: RealView: Fix entry-macro.S to work with multiple platforms
  [ARM] 4818/1: RealView: Add core-tile detection
  [ARM] 4817/1: RealView: Move the AMBA resource definitions to realview_eb.c
  [ARM] 4816/1: RealView: Move the platform-specific definitions into board-eb.h
  [ARM] 4815/1: RealView: Add clockevents suport for the local timers
  [ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCore
  [ARM] 4813/1: Add SMP helper functions for clockevents support
  [ARM] 4812/1: RealView: clockevents support for the RealView platforms
  [ARM] 4811/1: RealView: clocksource support for the RealView platforms
  [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags
  [ARM] 4798/1: pcm027: fix missing header file
  [ARM] 4803/1: pxa: fix building issue of poodle.c caused by patch 4737/1
  [ARM] 4801/1: pxa: fix building issues of missing pxa2xx-regs.h
  [ARM] pxa: introduce sysdev for pxa3xx static memory controller
  [ARM] pxa: add preliminary suspend/resume code for pxa3xx
  [ARM] pxa: introduce sysdev for GPIO register saving/restoring
  [ARM] pxa: introduce sysdev for IRQ register saving/restoring
  ...
parents 2c8296f8 0d899e1b

arch/arm/Kconfig

+16 −2
Original line number Diff line number Diff line
@@ -35,6 +35,11 @@ config GENERIC_CLOCKEVENTS 
	bool

	default n



config GENERIC_CLOCKEVENTS_BROADCAST

	bool

	depends on GENERIC_CLOCKEVENTS

	default y if SMP && !LOCAL_TIMERS



config MMU

	bool

	default y
@@ -187,6 +192,8 @@ config ARCH_REALVIEW 
	bool "ARM Ltd. RealView family"

	select ARM_AMBA

	select ICST307

	select GENERIC_TIME

	select GENERIC_CLOCKEVENTS

	help

	  This enables support for ARM Ltd RealView boards.
@@ -623,7 +630,7 @@ source "kernel/time/Kconfig" 


config SMP

	bool "Symmetric Multi-Processing (EXPERIMENTAL)"

	depends on EXPERIMENTAL && REALVIEW_MPCORE

	depends on EXPERIMENTAL && REALVIEW_EB_ARM11MP

	help

	  This enables support for systems with more than one CPU. If you have

	  a system with only one CPU, like most personal computers, say N. If
@@ -656,7 +663,7 @@ config HOTPLUG_CPU 


config LOCAL_TIMERS

	bool "Use local timer interrupts"

	depends on SMP && REALVIEW_MPCORE

	depends on SMP && REALVIEW_EB_ARM11MP

	default y

	help

	  Enable support for local timers on SMP platforms, rather then the
@@ -912,6 +919,13 @@ config KEXEC 
	  initially work for you.  It may help to enable device hotplugging

	  support.



config ATAGS_PROC

	bool "Export atags in procfs"

	default n

	help

	  Should the atags used to boot the kernel be exported in an "atags"

	  file in procfs. Useful with kexec.



endmenu



if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)

arch/arm/common/time-acorn.c

+0 −2
Original line number Diff line number Diff line
@@ -69,9 +69,7 @@ void __init ioctime_init(void) 
static irqreturn_t

ioc_timer_interrupt(int irq, void *dev_id)

{

	write_seqlock(&xtime_lock);

	timer_tick();

	write_sequnlock(&xtime_lock);

	return IRQ_HANDLED;

}

arch/arm/configs/ixp4xx_defconfig

+649 −333

File changed.

Preview size limit exceeded, changes collapsed.

arch/arm/kernel/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ obj-$(CONFIG_PCI) += bios32.o isa.o 
obj-$(CONFIG_SMP)		+= smp.o

obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel.o

obj-$(CONFIG_KPROBES)		+= kprobes.o kprobes-decode.o

obj-$(CONFIG_ATAGS_PROC)	+= atags.o

obj-$(CONFIG_OABI_COMPAT)	+= sys_oabi-compat.o



obj-$(CONFIG_CRUNCH)		+= crunch.o crunch-bits.o

arch/arm/kernel/atags.c

0 → 100644
+86 −0
Original line number Diff line number Diff line 
#include <linux/slab.h>

#include <linux/kexec.h>

#include <linux/proc_fs.h>

#include <asm/setup.h>

#include <asm/types.h>

#include <asm/page.h>



struct buffer {

	size_t size;

	char *data;

};

static struct buffer tags_buffer;



static int

read_buffer(char* page, char** start, off_t off, int count,

	int* eof, void* data)

{

	struct buffer *buffer = (struct buffer *)data;



	if (off >= buffer->size) {

		*eof = 1;

		return 0;

	}



	count = min((int) (buffer->size - off), count);



	memcpy(page, &buffer->data[off], count);



	return count;

}





static int

create_proc_entries(void)

{

	struct proc_dir_entry* tags_entry;



	tags_entry = create_proc_read_entry("atags", 0400, &proc_root, read_buffer, &tags_buffer);

	if (!tags_entry)

		return -ENOMEM;



	return 0;

}





static char __initdata atags_copy_buf[KEXEC_BOOT_PARAMS_SIZE];

static char __initdata *atags_copy;



void __init save_atags(const struct tag *tags)

{

	atags_copy = atags_copy_buf;

	memcpy(atags_copy, tags, KEXEC_BOOT_PARAMS_SIZE);

}





static int __init init_atags_procfs(void)

{

	struct tag *tag;

	int error;



	if (!atags_copy) {

		printk(KERN_WARNING "Exporting ATAGs: No saved tags found\n");

		return -EIO;

	}



	for (tag = (struct tag *) atags_copy; tag->hdr.size; tag = tag_next(tag))

		;



	tags_buffer.size = ((char *) tag - atags_copy) + sizeof(tag->hdr);

	tags_buffer.data = kmalloc(tags_buffer.size, GFP_KERNEL);

	if (tags_buffer.data == NULL)

		return -ENOMEM;

	memcpy(tags_buffer.data, atags_copy, tags_buffer.size);



	error = create_proc_entries();

	if (error) {

		printk(KERN_ERR "Exporting ATAGs: not enough memory\n");

		kfree(tags_buffer.data);

		tags_buffer.size = 0;

		tags_buffer.data = NULL;

	}



	return error;

}



arch_initcall(init_atags_procfs);

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