From 31aa8fd6fd30b0f36416df7d09619768d26b4332 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Fri, 18 Dec 2009 11:10:03 +0000
Subject: ARM: Add caller information to ioremap

This allows the procfs vmallocinfo file to show who created the ioremap
regions.  Note: __builtin_return_address(0) doesn't do what's expected
if its used in an inline function, so we leave __arm_ioremap callers
in such places alone.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/include/asm/io.h  | 11 +++++++--
 arch/arm/mach-davinci/io.c |  2 +-
 arch/arm/mach-iop13xx/io.c |  7 +++---
 arch/arm/mach-msm/io.c     |  3 ++-
 arch/arm/mm/ioremap.c      | 57 +++++++++++++++++++++++++++-------------------
 arch/arm/mm/nommu.c        | 12 ++++++++++
 arch/arm/plat-iop/io.c     |  3 ++-
 arch/arm/plat-omap/io.c    |  2 +-
 8 files changed, 65 insertions(+), 32 deletions(-)

diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index d2a59cfc30ce..c980156f3263 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -69,9 +69,16 @@ extern void __raw_readsl(const void __iomem *addr, void *data, int longlen);
 /*
  * __arm_ioremap takes CPU physical address.
  * __arm_ioremap_pfn takes a Page Frame Number and an offset into that page
+ * The _caller variety takes a __builtin_return_address(0) value for
+ * /proc/vmalloc to use - and should only be used in non-inline functions.
  */
-extern void __iomem * __arm_ioremap_pfn(unsigned long, unsigned long, size_t, unsigned int);
-extern void __iomem * __arm_ioremap(unsigned long, size_t, unsigned int);
+extern void __iomem *__arm_ioremap_pfn_caller(unsigned long, unsigned long,
+	size_t, unsigned int, void *);
+extern void __iomem *__arm_ioremap_caller(unsigned long, size_t, unsigned int,
+	void *);
+
+extern void __iomem *__arm_ioremap_pfn(unsigned long, unsigned long, size_t, unsigned int);
+extern void __iomem *__arm_ioremap(unsigned long, size_t, unsigned int);
 extern void __iounmap(volatile void __iomem *addr);
 
 /*
diff --git a/arch/arm/mach-davinci/io.c b/arch/arm/mach-davinci/io.c
index 49912b48b1b0..a1c0b6b99edf 100644
--- a/arch/arm/mach-davinci/io.c
+++ b/arch/arm/mach-davinci/io.c
@@ -24,7 +24,7 @@ void __iomem *davinci_ioremap(unsigned long p, size_t size, unsigned int type)
 	if (BETWEEN(p, IO_PHYS, IO_SIZE))
 		return XLATE(p, IO_PHYS, IO_VIRT);
 
-	return __arm_ioremap(p, size, type);
+	return __arm_ioremap_caller(p, size, type, __builtin_return_address(0));
 }
 EXPORT_SYMBOL(davinci_ioremap);
 
diff --git a/arch/arm/mach-iop13xx/io.c b/arch/arm/mach-iop13xx/io.c
index 529580997814..48642e66c566 100644
--- a/arch/arm/mach-iop13xx/io.c
+++ b/arch/arm/mach-iop13xx/io.c
@@ -61,9 +61,9 @@ void * __iomem __iop13xx_ioremap(unsigned long cookie, size_t size,
 			         (cookie - IOP13XX_PCIE_LOWER_MEM_RA));
 		break;
 	case IOP13XX_PBI_LOWER_MEM_RA ... IOP13XX_PBI_UPPER_MEM_RA:
-		retval = __arm_ioremap(IOP13XX_PBI_LOWER_MEM_PA +
+		retval = __arm_ioremap_caller(IOP13XX_PBI_LOWER_MEM_PA +
 				       (cookie - IOP13XX_PBI_LOWER_MEM_RA),
-				       size, mtype);
+				       size, mtype, __builtin_return_address(0));
 		break;
 	case IOP13XX_PCIE_LOWER_IO_PA ... IOP13XX_PCIE_UPPER_IO_PA:
 		retval = (void *) IOP13XX_PCIE_IO_PHYS_TO_VIRT(cookie);
@@ -75,7 +75,8 @@ void * __iomem __iop13xx_ioremap(unsigned long cookie, size_t size,
 		retval = (void *) IOP13XX_PMMR_PHYS_TO_VIRT(cookie);
 		break;
 	default:
-		retval = __arm_ioremap(cookie, size, mtype);
+		retval = __arm_ioremap_caller(cookie, size, mtype,
+				__builtin_return_address(0));
 	}
 
 	return retval;
diff --git a/arch/arm/mach-msm/io.c b/arch/arm/mach-msm/io.c
index 1c5e7dac086f..05f96b780aa6 100644
--- a/arch/arm/mach-msm/io.c
+++ b/arch/arm/mach-msm/io.c
@@ -76,5 +76,6 @@ __msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
 			mtype = MT_DEVICE_NONSHARED;
 	}
 
-	return __arm_ioremap(phys_addr, size, mtype);
+	return __arm_ioremap_caller(phys_addr, size, mtype,
+		__builtin_return_address(0));
 }
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 0ab75c60f7cf..28c8b950ef04 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -139,8 +139,8 @@ void __check_kvm_seq(struct mm_struct *mm)
  * which requires the new ioremap'd region to be referenced, the CPU will
  * reference the _old_ region.
  *
- * Note that get_vm_area() allocates a guard 4K page, so we need to mask
- * the size back to 1MB aligned or we will overflow in the loop below.
+ * Note that get_vm_area_caller() allocates a guard 4K page, so we need to
+ * mask the size back to 1MB aligned or we will overflow in the loop below.
  */
 static void unmap_area_sections(unsigned long virt, unsigned long size)
 {
@@ -254,22 +254,8 @@ remap_area_supersections(unsigned long virt, unsigned long pfn,
 }
 #endif
 
-
-/*
- * Remap an arbitrary physical address space into the kernel virtual
- * address space. Needed when the kernel wants to access high addresses
- * directly.
- *
- * NOTE! We need to allow non-page-aligned mappings too: we will obviously
- * have to convert them into an offset in a page-aligned mapping, but the
- * caller shouldn't need to know that small detail.
- *
- * 'flags' are the extra L_PTE_ flags that you want to specify for this
- * mapping.  See <asm/pgtable.h> for more information.
- */
-void __iomem *
-__arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
-		  unsigned int mtype)
+void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn,
+	unsigned long offset, size_t size, unsigned int mtype, void *caller)
 {
 	const struct mem_type *type;
 	int err;
@@ -291,7 +277,7 @@ __arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
 	 */
 	size = PAGE_ALIGN(offset + size);
 
- 	area = get_vm_area(size, VM_IOREMAP);
+	area = get_vm_area_caller(size, VM_IOREMAP, caller);
  	if (!area)
  		return NULL;
  	addr = (unsigned long)area->addr;
@@ -318,10 +304,9 @@ __arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
 	flush_cache_vmap(addr, addr + size);
 	return (void __iomem *) (offset + addr);
 }
-EXPORT_SYMBOL(__arm_ioremap_pfn);
 
-void __iomem *
-__arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
+void __iomem *__arm_ioremap_caller(unsigned long phys_addr, size_t size,
+	unsigned int mtype, void *caller)
 {
 	unsigned long last_addr;
  	unsigned long offset = phys_addr & ~PAGE_MASK;
@@ -334,7 +319,33 @@ __arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
 	if (!size || last_addr < phys_addr)
 		return NULL;
 
- 	return __arm_ioremap_pfn(pfn, offset, size, mtype);
+	return __arm_ioremap_pfn_caller(pfn, offset, size, mtype,
+			caller);
+}
+
+/*
+ * Remap an arbitrary physical address space into the kernel virtual
+ * address space. Needed when the kernel wants to access high addresses
+ * directly.
+ *
+ * NOTE! We need to allow non-page-aligned mappings too: we will obviously
+ * have to convert them into an offset in a page-aligned mapping, but the
+ * caller shouldn't need to know that small detail.
+ */
+void __iomem *
+__arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
+		  unsigned int mtype)
+{
+	return __arm_ioremap_pfn_caller(pfn, offset, size, mtype,
+			__builtin_return_address(0));
+}
+EXPORT_SYMBOL(__arm_ioremap_pfn);
+
+void __iomem *
+__arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
+{
+	return __arm_ioremap_caller(phys_addr, size, mtype,
+			__builtin_return_address(0));
 }
 EXPORT_SYMBOL(__arm_ioremap);
 
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 374a8311bc84..9bfeb6b9509a 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -74,6 +74,12 @@ void __iomem *__arm_ioremap_pfn(unsigned long pfn, unsigned long offset,
 }
 EXPORT_SYMBOL(__arm_ioremap_pfn);
 
+void __iomem *__arm_ioremap_pfn_caller(unsigned long pfn, unsigned long offset,
+			   size_t size, unsigned int mtype, void *caller)
+{
+	return __arm_ioremap_pfn(pfn, offset, size, mtype);
+}
+
 void __iomem *__arm_ioremap(unsigned long phys_addr, size_t size,
 			    unsigned int mtype)
 {
@@ -81,6 +87,12 @@ void __iomem *__arm_ioremap(unsigned long phys_addr, size_t size,
 }
 EXPORT_SYMBOL(__arm_ioremap);
 
+void __iomem *__arm_ioremap(unsigned long phys_addr, size_t size,
+			    unsigned int mtype, void *caller)
+{
+	return __arm_ioremap(phys_addr, size, mtype);
+}
+
 void __iounmap(volatile void __iomem *addr)
 {
 }
diff --git a/arch/arm/plat-iop/io.c b/arch/arm/plat-iop/io.c
index ed0bbece0d61..e15bc17db90b 100644
--- a/arch/arm/plat-iop/io.c
+++ b/arch/arm/plat-iop/io.c
@@ -34,7 +34,8 @@ void * __iomem __iop3xx_ioremap(unsigned long cookie, size_t size,
 		retval = (void *) IOP3XX_PMMR_PHYS_TO_VIRT(cookie);
 		break;
 	default:
-		retval = __arm_ioremap(cookie, size, mtype);
+		retval = __arm_ioremap_caller(cookie, size, mtype,
+				__builtin_return_address(0));
 	}
 
 	return retval;
diff --git a/arch/arm/plat-omap/io.c b/arch/arm/plat-omap/io.c
index 0cfd54f519c4..4cbd4fb3232c 100644
--- a/arch/arm/plat-omap/io.c
+++ b/arch/arm/plat-omap/io.c
@@ -128,7 +128,7 @@ void __iomem *omap_ioremap(unsigned long p, size_t size, unsigned int type)
 			return XLATE(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_VIRT);
 	}
 #endif
-	return __arm_ioremap(p, size, type);
+	return __arm_ioremap_caller(p, size, type, __builtin_return_address(0));
 }
 EXPORT_SYMBOL(omap_ioremap);
 
-- 
cgit v1.2.3


From 7921fc4a25800f4210bca96c05dea67a6b736d32 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sun, 10 Jan 2010 17:05:08 +0000
Subject: ARM: remove old RTC support

All RTC drivers have been converted to rtclib, so the old code
providing the set_rtc function pointer, save_time_delta() and
restore_time_delta() functions is obsolete.  Remove it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/include/asm/mach/time.h |  8 -----
 arch/arm/kernel/time.c           | 74 ----------------------------------------
 2 files changed, 82 deletions(-)

diff --git a/arch/arm/include/asm/mach/time.h b/arch/arm/include/asm/mach/time.h
index b2cc1fcd0400..8bffc3ff3acf 100644
--- a/arch/arm/include/asm/mach/time.h
+++ b/arch/arm/include/asm/mach/time.h
@@ -46,12 +46,4 @@ struct sys_timer {
 extern struct sys_timer *system_timer;
 extern void timer_tick(void);
 
-/*
- * Kernel time keeping support.
- */
-struct timespec;
-extern int (*set_rtc)(void);
-extern void save_time_delta(struct timespec *delta, struct timespec *rtc);
-extern void restore_time_delta(struct timespec *delta, struct timespec *rtc);
-
 #endif
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index d38cdf2c8276..e26f966d117b 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -10,11 +10,6 @@
  *
  *  This file contains the ARM-specific time handling details:
  *  reading the RTC at bootup, etc...
- *
- *  1994-07-02  Alan Modra
- *              fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
- *  1998-12-20  Updated NTP code according to technical memorandum Jan '96
- *              "A Kernel Model for Precision Timekeeping" by Dave Mills
  */
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -77,11 +72,6 @@ unsigned long profile_pc(struct pt_regs *regs)
 EXPORT_SYMBOL(profile_pc);
 #endif
 
-/*
- * hook for setting the RTC's idea of the current time.
- */
-int (*set_rtc)(void);
-
 #ifndef CONFIG_GENERIC_TIME
 static unsigned long dummy_gettimeoffset(void)
 {
@@ -89,36 +79,6 @@ static unsigned long dummy_gettimeoffset(void)
 }
 #endif
 
-static unsigned long next_rtc_update;
-
-/*
- * If we have an externally synchronized linux clock, then update
- * CMOS clock accordingly every ~11 minutes.  set_rtc() has to be
- * called as close as possible to 500 ms before the new second
- * starts.
- */
-static inline void do_set_rtc(void)
-{
-	if (!ntp_synced() || set_rtc == NULL)
-		return;
-
-	if (next_rtc_update &&
-	    time_before((unsigned long)xtime.tv_sec, next_rtc_update))
-		return;
-
-	if (xtime.tv_nsec < 500000000 - ((unsigned) tick_nsec >> 1) &&
-	    xtime.tv_nsec >= 500000000 + ((unsigned) tick_nsec >> 1))
-		return;
-
-	if (set_rtc())
-		/*
-		 * rtc update failed.  Try again in 60s
-		 */
-		next_rtc_update = xtime.tv_sec + 60;
-	else
-		next_rtc_update = xtime.tv_sec + 660;
-}
-
 #ifdef CONFIG_LEDS
 
 static void dummy_leds_event(led_event_t evt)
@@ -295,39 +255,6 @@ int do_settimeofday(struct timespec *tv)
 EXPORT_SYMBOL(do_settimeofday);
 #endif /* !CONFIG_GENERIC_TIME */
 
-/**
- * save_time_delta - Save the offset between system time and RTC time
- * @delta: pointer to timespec to store delta
- * @rtc: pointer to timespec for current RTC time
- *
- * Return a delta between the system time and the RTC time, such
- * that system time can be restored later with restore_time_delta()
- */
-void save_time_delta(struct timespec *delta, struct timespec *rtc)
-{
-	set_normalized_timespec(delta,
-				xtime.tv_sec - rtc->tv_sec,
-				xtime.tv_nsec - rtc->tv_nsec);
-}
-EXPORT_SYMBOL(save_time_delta);
-
-/**
- * restore_time_delta - Restore the current system time
- * @delta: delta returned by save_time_delta()
- * @rtc: pointer to timespec for current RTC time
- */
-void restore_time_delta(struct timespec *delta, struct timespec *rtc)
-{
-	struct timespec ts;
-
-	set_normalized_timespec(&ts,
-				delta->tv_sec + rtc->tv_sec,
-				delta->tv_nsec + rtc->tv_nsec);
-
-	do_settimeofday(&ts);
-}
-EXPORT_SYMBOL(restore_time_delta);
-
 #ifndef CONFIG_GENERIC_CLOCKEVENTS
 /*
  * Kernel system timer support.
@@ -336,7 +263,6 @@ void timer_tick(void)
 {
 	profile_tick(CPU_PROFILING);
 	do_leds();
-	do_set_rtc();
 	write_seqlock(&xtime_lock);
 	do_timer(1);
 	write_sequnlock(&xtime_lock);
-- 
cgit v1.2.3


From 373b32abf9b33616ad94283461bb2ab49e8371d5 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sun, 10 Jan 2010 17:15:32 +0000
Subject: ARM: move LED support code out of arch/arm/kernel/time.c

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/kernel/Makefile |   1 +
 arch/arm/kernel/leds.c   | 115 +++++++++++++++++++++++++++++++++++++++++++++++
 arch/arm/kernel/time.c   | 104 ------------------------------------------
 3 files changed, 116 insertions(+), 104 deletions(-)
 create mode 100644 arch/arm/kernel/leds.c

diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index dd00f747e2ad..eb0284cd8661 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -17,6 +17,7 @@ obj-y		:= compat.o elf.o entry-armv.o entry-common.o irq.o \
 		   process.o ptrace.o return_address.o setup.o signal.o \
 		   sys_arm.o stacktrace.o time.o traps.o
 
+obj-$(CONFIG_LEDS)		+= leds.o
 obj-$(CONFIG_OC_ETM)		+= etm.o
 
 obj-$(CONFIG_ISA_DMA_API)	+= dma.o
diff --git a/arch/arm/kernel/leds.c b/arch/arm/kernel/leds.c
new file mode 100644
index 000000000000..31a316c1777b
--- /dev/null
+++ b/arch/arm/kernel/leds.c
@@ -0,0 +1,115 @@
+/*
+ * LED support code, ripped out of arch/arm/kernel/time.c
+ *
+ *  Copyright (C) 1994-2001 Russell King
+ *
+ * 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 <linux/module.h>
+#include <linux/init.h>
+#include <linux/sysdev.h>
+
+#include <asm/leds.h>
+
+static void dummy_leds_event(led_event_t evt)
+{
+}
+
+void (*leds_event)(led_event_t) = dummy_leds_event;
+
+struct leds_evt_name {
+	const char	name[8];
+	int		on;
+	int		off;
+};
+
+static const struct leds_evt_name evt_names[] = {
+	{ "amber", led_amber_on, led_amber_off },
+	{ "blue",  led_blue_on,  led_blue_off  },
+	{ "green", led_green_on, led_green_off },
+	{ "red",   led_red_on,   led_red_off   },
+};
+
+static ssize_t leds_store(struct sys_device *dev,
+			struct sysdev_attribute *attr,
+			const char *buf, size_t size)
+{
+	int ret = -EINVAL, len = strcspn(buf, " ");
+
+	if (len > 0 && buf[len] == '\0')
+		len--;
+
+	if (strncmp(buf, "claim", len) == 0) {
+		leds_event(led_claim);
+		ret = size;
+	} else if (strncmp(buf, "release", len) == 0) {
+		leds_event(led_release);
+		ret = size;
+	} else {
+		int i;
+
+		for (i = 0; i < ARRAY_SIZE(evt_names); i++) {
+			if (strlen(evt_names[i].name) != len ||
+			    strncmp(buf, evt_names[i].name, len) != 0)
+				continue;
+			if (strncmp(buf+len, " on", 3) == 0) {
+				leds_event(evt_names[i].on);
+				ret = size;
+			} else if (strncmp(buf+len, " off", 4) == 0) {
+				leds_event(evt_names[i].off);
+				ret = size;
+			}
+			break;
+		}
+	}
+	return ret;
+}
+
+static SYSDEV_ATTR(event, 0200, NULL, leds_store);
+
+static int leds_suspend(struct sys_device *dev, pm_message_t state)
+{
+	leds_event(led_stop);
+	return 0;
+}
+
+static int leds_resume(struct sys_device *dev)
+{
+	leds_event(led_start);
+	return 0;
+}
+
+static int leds_shutdown(struct sys_device *dev)
+{
+	leds_event(led_halted);
+	return 0;
+}
+
+static struct sysdev_class leds_sysclass = {
+	.name		= "leds",
+	.shutdown	= leds_shutdown,
+	.suspend	= leds_suspend,
+	.resume		= leds_resume,
+};
+
+static struct sys_device leds_device = {
+	.id		= 0,
+	.cls		= &leds_sysclass,
+};
+
+static int __init leds_init(void)
+{
+	int ret;
+	ret = sysdev_class_register(&leds_sysclass);
+	if (ret == 0)
+		ret = sysdev_register(&leds_device);
+	if (ret == 0)
+		ret = sysdev_create_file(&leds_device, &attr_event);
+	return ret;
+}
+
+device_initcall(leds_init);
+
+EXPORT_SYMBOL(leds_event);
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index e26f966d117b..28753805d2d1 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -79,110 +79,6 @@ static unsigned long dummy_gettimeoffset(void)
 }
 #endif
 
-#ifdef CONFIG_LEDS
-
-static void dummy_leds_event(led_event_t evt)
-{
-}
-
-void (*leds_event)(led_event_t) = dummy_leds_event;
-
-struct leds_evt_name {
-	const char	name[8];
-	int		on;
-	int		off;
-};
-
-static const struct leds_evt_name evt_names[] = {
-	{ "amber", led_amber_on, led_amber_off },
-	{ "blue",  led_blue_on,  led_blue_off  },
-	{ "green", led_green_on, led_green_off },
-	{ "red",   led_red_on,   led_red_off   },
-};
-
-static ssize_t leds_store(struct sys_device *dev,
-			struct sysdev_attribute *attr,
-			const char *buf, size_t size)
-{
-	int ret = -EINVAL, len = strcspn(buf, " ");
-
-	if (len > 0 && buf[len] == '\0')
-		len--;
-
-	if (strncmp(buf, "claim", len) == 0) {
-		leds_event(led_claim);
-		ret = size;
-	} else if (strncmp(buf, "release", len) == 0) {
-		leds_event(led_release);
-		ret = size;
-	} else {
-		int i;
-
-		for (i = 0; i < ARRAY_SIZE(evt_names); i++) {
-			if (strlen(evt_names[i].name) != len ||
-			    strncmp(buf, evt_names[i].name, len) != 0)
-				continue;
-			if (strncmp(buf+len, " on", 3) == 0) {
-				leds_event(evt_names[i].on);
-				ret = size;
-			} else if (strncmp(buf+len, " off", 4) == 0) {
-				leds_event(evt_names[i].off);
-				ret = size;
-			}
-			break;
-		}
-	}
-	return ret;
-}
-
-static SYSDEV_ATTR(event, 0200, NULL, leds_store);
-
-static int leds_suspend(struct sys_device *dev, pm_message_t state)
-{
-	leds_event(led_stop);
-	return 0;
-}
-
-static int leds_resume(struct sys_device *dev)
-{
-	leds_event(led_start);
-	return 0;
-}
-
-static int leds_shutdown(struct sys_device *dev)
-{
-	leds_event(led_halted);
-	return 0;
-}
-
-static struct sysdev_class leds_sysclass = {
-	.name		= "leds",
-	.shutdown	= leds_shutdown,
-	.suspend	= leds_suspend,
-	.resume		= leds_resume,
-};
-
-static struct sys_device leds_device = {
-	.id		= 0,
-	.cls		= &leds_sysclass,
-};
-
-static int __init leds_init(void)
-{
-	int ret;
-	ret = sysdev_class_register(&leds_sysclass);
-	if (ret == 0)
-		ret = sysdev_register(&leds_device);
-	if (ret == 0)
-		ret = sysdev_create_file(&leds_device, &attr_event);
-	return ret;
-}
-
-device_initcall(leds_init);
-
-EXPORT_SYMBOL(leds_event);
-#endif
-
 #ifdef CONFIG_LEDS_TIMER
 static inline void do_leds(void)
 {
-- 
cgit v1.2.3


From e119bfff1f102f8d1505910cd6c09df55c776b43 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sun, 10 Jan 2010 17:23:29 +0000
Subject: ARM: Move creation of /proc/cpu out of alignment.c

Always creating this directory avoids other users having to jump
through silly hoops when they want to share this directory.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/Kconfig        |  4 ++++
 arch/arm/kernel/setup.c | 15 ++++++++++++++-
 arch/arm/mm/alignment.c |  6 +-----
 3 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c2238cd474c7..b224216c11db 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -52,6 +52,9 @@ config HAVE_TCM
 	bool
 	select GENERIC_ALLOCATOR
 
+config HAVE_PROC_CPU
+	bool
+
 config NO_IOPORT
 	bool
 
@@ -1229,6 +1232,7 @@ config ALIGNMENT_TRAP
 	bool
 	depends on CPU_CP15_MMU
 	default y if !ARCH_EBSA110
+	select HAVE_PROC_CPU if PROC_FS
 	help
 	  ARM processors cannot fetch/store information which is not
 	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index c6c57b640b6b..5357e48f2c39 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -24,6 +24,7 @@
 #include <linux/interrupt.h>
 #include <linux/smp.h>
 #include <linux/fs.h>
+#include <linux/proc_fs.h>
 
 #include <asm/unified.h>
 #include <asm/cpu.h>
@@ -782,9 +783,21 @@ static int __init topology_init(void)
 
 	return 0;
 }
-
 subsys_initcall(topology_init);
 
+#ifdef CONFIG_HAVE_PROC_CPU
+static int __init proc_cpu_init(void)
+{
+	struct proc_dir_entry *res;
+
+	res = proc_mkdir("cpu", NULL);
+	if (!res)
+		return -ENOMEM;
+	return 0;
+}
+fs_initcall(proc_cpu_init);
+#endif
+
 static const char *hwcap_str[] = {
 	"swp",
 	"half",
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index b270d6228fe2..0c5eb6983cef 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -898,11 +898,7 @@ static int __init alignment_init(void)
 #ifdef CONFIG_PROC_FS
 	struct proc_dir_entry *res;
 
-	res = proc_mkdir("cpu", NULL);
-	if (!res)
-		return -ENOMEM;
-
-	res = create_proc_entry("alignment", S_IWUSR | S_IRUGO, res);
+	res = create_proc_entry("cpu/alignment", S_IWUSR | S_IRUGO, NULL);
 	if (!res)
 		return -ENOMEM;
 
-- 
cgit v1.2.3


From 2b0d8c251b8876d530a6bf671eb5425838fa698a Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jeremy.kerr@canonical.com>
Date: Mon, 11 Jan 2010 23:17:34 +0100
Subject: ARM: 5880/1: arm: use generic infrastructure for early params

The ARM setup code includes its own parser for early params, there's
also one in the generic init code.

This patch removes __early_init (and related code) from
arch/arm/kernel/setup.c, and changes users to the generic early_init
macro instead.

The generic macro takes a char * argument, rather than char **, so we
need to update the parser functions a little.

Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/include/asm/setup.h      | 12 --------
 arch/arm/kernel/setup.c           | 62 ++++++++++-----------------------------
 arch/arm/kernel/vmlinux.lds.S     |  4 ---
 arch/arm/mach-footbridge/common.c |  7 +++--
 arch/arm/mm/init.c                | 12 ++++----
 arch/arm/mm/mmu.c                 | 41 +++++++++++++-------------
 6 files changed, 48 insertions(+), 90 deletions(-)

diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
index 5ccce0a9b03c..f392fb4437af 100644
--- a/arch/arm/include/asm/setup.h
+++ b/arch/arm/include/asm/setup.h
@@ -223,18 +223,6 @@ extern struct meminfo meminfo;
 #define bank_phys_end(bank)	((bank)->start + (bank)->size)
 #define bank_phys_size(bank)	(bank)->size
 
-/*
- * Early command line parameters.
- */
-struct early_params {
-	const char *arg;
-	void (*fn)(char **p);
-};
-
-#define __early_param(name,fn)					\
-static struct early_params __early_##fn __used			\
-__attribute__((__section__(".early_param.init"))) = { name, fn }
-
 #endif  /*  __KERNEL__  */
 
 #endif
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 5357e48f2c39..b01a56a03ed8 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -418,10 +418,11 @@ static int __init arm_add_memory(unsigned long start, unsigned long size)
  * Pick out the memory size.  We look for mem=size@start,
  * where start and size are "size[KkMm]"
  */
-static void __init early_mem(char **p)
+static int __init early_mem(char *p)
 {
 	static int usermem __initdata = 0;
 	unsigned long size, start;
+	char *endp;
 
 	/*
 	 * If the user specifies memory size, we
@@ -434,52 +435,15 @@ static void __init early_mem(char **p)
 	}
 
 	start = PHYS_OFFSET;
-	size  = memparse(*p, p);
-	if (**p == '@')
-		start = memparse(*p + 1, p);
+	size  = memparse(p, &endp);
+	if (*endp == '@')
+		start = memparse(endp + 1, NULL);
 
 	arm_add_memory(start, size);
-}
-__early_param("mem=", early_mem);
 
-/*
- * Initial parsing of the command line.
- */
-static void __init parse_cmdline(char **cmdline_p, char *from)
-{
-	char c = ' ', *to = command_line;
-	int len = 0;
-
-	for (;;) {
-		if (c == ' ') {
-			extern struct early_params __early_begin, __early_end;
-			struct early_params *p;
-
-			for (p = &__early_begin; p < &__early_end; p++) {
-				int arglen = strlen(p->arg);
-
-				if (memcmp(from, p->arg, arglen) == 0) {
-					if (to != command_line)
-						to -= 1;
-					from += arglen;
-					p->fn(&from);
-
-					while (*from != ' ' && *from != '\0')
-						from++;
-					break;
-				}
-			}
-		}
-		c = *from++;
-		if (!c)
-			break;
-		if (COMMAND_LINE_SIZE <= ++len)
-			break;
-		*to++ = c;
-	}
-	*to = '\0';
-	*cmdline_p = command_line;
+	return 0;
 }
+early_param("mem", early_mem);
 
 static void __init
 setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
@@ -740,9 +704,15 @@ void __init setup_arch(char **cmdline_p)
 	init_mm.end_data   = (unsigned long) _edata;
 	init_mm.brk	   = (unsigned long) _end;
 
-	memcpy(boot_command_line, from, COMMAND_LINE_SIZE);
-	boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
-	parse_cmdline(cmdline_p, from);
+	/* parse_early_param needs a boot_command_line */
+	strlcpy(boot_command_line, from, COMMAND_LINE_SIZE);
+
+	/* populate command_line too for later use, preserving boot_command_line */
+	strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
+	*cmdline_p = command_line;
+
+	parse_early_param();
+
 	paging_init(mdesc);
 	request_standard_resources(&meminfo, mdesc);
 
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 4957e13ef55b..b16c07914b55 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -43,10 +43,6 @@ SECTIONS
 
 		INIT_SETUP(16)
 
-		__early_begin = .;
-			*(.early_param.init)
-		__early_end = .;
-
 		INIT_CALLS
 		CON_INITCALL
 		SECURITY_INITCALL
diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c
index 41febc796b1c..e3bc3f6f6b10 100644
--- a/arch/arm/mach-footbridge/common.c
+++ b/arch/arm/mach-footbridge/common.c
@@ -32,12 +32,13 @@ unsigned int mem_fclk_21285 = 50000000;
 
 EXPORT_SYMBOL(mem_fclk_21285);
 
-static void __init early_fclk(char **arg)
+static int __init early_fclk(char *arg)
 {
-	mem_fclk_21285 = simple_strtoul(*arg, arg, 0);
+	mem_fclk_21285 = simple_strtoul(arg, NULL, 0);
+	return 0;
 }
 
-__early_param("mem_fclk_21285=", early_fclk);
+early_param("mem_fclk_21285", early_fclk);
 
 static int __init parse_tag_memclk(const struct tag *tag)
 {
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index a04ffbbbe253..a340569b991e 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -32,19 +32,21 @@
 static unsigned long phys_initrd_start __initdata = 0;
 static unsigned long phys_initrd_size __initdata = 0;
 
-static void __init early_initrd(char **p)
+static int __init early_initrd(char *p)
 {
 	unsigned long start, size;
+	char *endp;
 
-	start = memparse(*p, p);
-	if (**p == ',') {
-		size = memparse((*p) + 1, p);
+	start = memparse(p, &endp);
+	if (*endp == ',') {
+		size = memparse(endp + 1, NULL);
 
 		phys_initrd_start = start;
 		phys_initrd_size = size;
 	}
+	return 0;
 }
-__early_param("initrd=", early_initrd);
+early_param("initrd", early_initrd);
 
 static int __init parse_tag_initrd(const struct tag *tag)
 {
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 1708da82da96..88f5d71248d9 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -100,18 +100,17 @@ static struct cachepolicy cache_policies[] __initdata = {
  * writebuffer to be turned off.  (Note: the write
  * buffer should not be on and the cache off).
  */
-static void __init early_cachepolicy(char **p)
+static int __init early_cachepolicy(char *p)
 {
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(cache_policies); i++) {
 		int len = strlen(cache_policies[i].policy);
 
-		if (memcmp(*p, cache_policies[i].policy, len) == 0) {
+		if (memcmp(p, cache_policies[i].policy, len) == 0) {
 			cachepolicy = i;
 			cr_alignment &= ~cache_policies[i].cr_mask;
 			cr_no_alignment &= ~cache_policies[i].cr_mask;
-			*p += len;
 			break;
 		}
 	}
@@ -130,36 +129,37 @@ static void __init early_cachepolicy(char **p)
 	}
 	flush_cache_all();
 	set_cr(cr_alignment);
+	return 0;
 }
-__early_param("cachepolicy=", early_cachepolicy);
+early_param("cachepolicy", early_cachepolicy);
 
-static void __init early_nocache(char **__unused)
+static int __init early_nocache(char *__unused)
 {
 	char *p = "buffered";
 	printk(KERN_WARNING "nocache is deprecated; use cachepolicy=%s\n", p);
-	early_cachepolicy(&p);
+	early_cachepolicy(p);
+	return 0;
 }
-__early_param("nocache", early_nocache);
+early_param("nocache", early_nocache);
 
-static void __init early_nowrite(char **__unused)
+static int __init early_nowrite(char *__unused)
 {
 	char *p = "uncached";
 	printk(KERN_WARNING "nowb is deprecated; use cachepolicy=%s\n", p);
-	early_cachepolicy(&p);
+	early_cachepolicy(p);
+	return 0;
 }
-__early_param("nowb", early_nowrite);
+early_param("nowb", early_nowrite);
 
-static void __init early_ecc(char **p)
+static int __init early_ecc(char *p)
 {
-	if (memcmp(*p, "on", 2) == 0) {
+	if (memcmp(p, "on", 2) == 0)
 		ecc_mask = PMD_PROTECTION;
-		*p += 2;
-	} else if (memcmp(*p, "off", 3) == 0) {
+	else if (memcmp(p, "off", 3) == 0)
 		ecc_mask = 0;
-		*p += 3;
-	}
+	return 0;
 }
-__early_param("ecc=", early_ecc);
+early_param("ecc", early_ecc);
 
 static int __init noalign_setup(char *__unused)
 {
@@ -670,9 +670,9 @@ static unsigned long __initdata vmalloc_reserve = SZ_128M;
  * bytes. This can be used to increase (or decrease) the vmalloc
  * area - the default is 128m.
  */
-static void __init early_vmalloc(char **arg)
+static int __init early_vmalloc(char *arg)
 {
-	vmalloc_reserve = memparse(*arg, arg);
+	vmalloc_reserve = memparse(arg, NULL);
 
 	if (vmalloc_reserve < SZ_16M) {
 		vmalloc_reserve = SZ_16M;
@@ -687,8 +687,9 @@ static void __init early_vmalloc(char **arg)
 			"vmalloc area is too big, limiting to %luMB\n",
 			vmalloc_reserve >> 20);
 	}
+	return 0;
 }
-__early_param("vmalloc=", early_vmalloc);
+early_param("vmalloc", early_vmalloc);
 
 #define VMALLOC_MIN	(void *)(VMALLOC_END - vmalloc_reserve)
 
-- 
cgit v1.2.3


From a9221de66d2d94e6e34c3f56bbdd744935020737 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Wed, 20 Jan 2010 17:02:54 +0000
Subject: ARM: add notify_die() support

Kernel debuggers want to be informed of die() events, so that they
can take some action to allow the problem to be inspected.  Provide
the hook in a similar manner to x86.

Note that we currently don't implement the individual trap hooks.

Acked-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/include/asm/system.h |  3 +--
 arch/arm/kernel/traps.c       | 35 +++++++++++++++++++++++++----------
 2 files changed, 26 insertions(+), 12 deletions(-)

diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 058e7e90881d..ca88e6a84707 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -73,8 +73,7 @@ extern unsigned int mem_fclk_21285;
 
 struct pt_regs;
 
-void die(const char *msg, struct pt_regs *regs, int err)
-		__attribute__((noreturn));
+void die(const char *msg, struct pt_regs *regs, int err);
 
 struct siginfo;
 void arm_notify_die(const char *str, struct pt_regs *regs, struct siginfo *info,
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 3f361a783f43..1621e5327b2a 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -12,15 +12,17 @@
  *  'linux/arch/arm/lib/traps.S'.  Mostly a debugging aid, but will probably
  *  kill the offending process.
  */
-#include <linux/module.h>
 #include <linux/signal.h>
-#include <linux/spinlock.h>
 #include <linux/personality.h>
 #include <linux/kallsyms.h>
-#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/uaccess.h>
 #include <linux/hardirq.h>
+#include <linux/kdebug.h>
+#include <linux/module.h>
+#include <linux/kexec.h>
+#include <linux/delay.h>
 #include <linux/init.h>
-#include <linux/uaccess.h>
 
 #include <asm/atomic.h>
 #include <asm/cacheflush.h>
@@ -224,14 +226,21 @@ void show_stack(struct task_struct *tsk, unsigned long *sp)
 #define S_SMP ""
 #endif
 
-static void __die(const char *str, int err, struct thread_info *thread, struct pt_regs *regs)
+static int __die(const char *str, int err, struct thread_info *thread, struct pt_regs *regs)
 {
 	struct task_struct *tsk = thread->task;
 	static int die_counter;
+	int ret;
 
 	printk(KERN_EMERG "Internal error: %s: %x [#%d]" S_PREEMPT S_SMP "\n",
 	       str, err, ++die_counter);
 	sysfs_printk_last_file();
+
+	/* trap and error numbers are mostly meaningless on ARM */
+	ret = notify_die(DIE_OOPS, str, regs, err, tsk->thread.trap_no, SIGSEGV);
+	if (ret == NOTIFY_STOP)
+		return ret;
+
 	print_modules();
 	__show_regs(regs);
 	printk(KERN_EMERG "Process %.*s (pid: %d, stack limit = 0x%p)\n",
@@ -243,6 +252,8 @@ static void __die(const char *str, int err, struct thread_info *thread, struct p
 		dump_backtrace(regs, tsk);
 		dump_instr(KERN_EMERG, regs);
 	}
+
+	return ret;
 }
 
 DEFINE_SPINLOCK(die_lock);
@@ -250,16 +261,21 @@ DEFINE_SPINLOCK(die_lock);
 /*
  * This function is protected against re-entrancy.
  */
-NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
+void die(const char *str, struct pt_regs *regs, int err)
 {
 	struct thread_info *thread = current_thread_info();
+	int ret;
 
 	oops_enter();
 
 	spin_lock_irq(&die_lock);
 	console_verbose();
 	bust_spinlocks(1);
-	__die(str, err, thread, regs);
+	ret = __die(str, err, thread, regs);
+
+	if (regs && kexec_should_crash(thread->task))
+		crash_kexec(regs);
+
 	bust_spinlocks(0);
 	add_taint(TAINT_DIE);
 	spin_unlock_irq(&die_lock);
@@ -267,11 +283,10 @@ NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
 
 	if (in_interrupt())
 		panic("Fatal exception in interrupt");
-
 	if (panic_on_oops)
 		panic("Fatal exception");
-
-	do_exit(SIGSEGV);
+	if (ret != NOTIFY_STOP)
+		do_exit(SIGSEGV);
 }
 
 void arm_notify_die(const char *str, struct pt_regs *regs,
-- 
cgit v1.2.3


From 24b44a66fa240f6fc63343623ca730d39754047e Mon Sep 17 00:00:00 2001
From: Will Deacon <will.deacon@arm.com>
Date: Wed, 20 Jan 2010 19:05:07 +0100
Subject: ARM: 5889/1: Add atomic64 routines for ARMv6k and above.

In preparation for perf-events support, ARM needs to support atomic64_t
operations. v6k and above support the ldrexd and strexd instructions to
do just that.

This patch adds atomic64 support to the ARM architecture. v6k and above
make use of new instructions whilst older cores fall back on the generic
solution using spinlocks. If and when v7-M cores are supported by Linux,
they will need to fall back on the spinlock implementation too.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/Kconfig              |   1 +
 arch/arm/include/asm/atomic.h | 228 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 229 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b224216c11db..762ae536f909 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -12,6 +12,7 @@ config ARM
 	select HAVE_IDE
 	select RTC_LIB
 	select SYS_SUPPORTS_APM_EMULATION
+	select GENERIC_ATOMIC64 if (!CPU_32v6K)
 	select HAVE_OPROFILE
 	select HAVE_ARCH_KGDB
 	select HAVE_KPROBES if (!XIP_KERNEL)
diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h
index d0daeab2234e..e8ddec2cb158 100644
--- a/arch/arm/include/asm/atomic.h
+++ b/arch/arm/include/asm/atomic.h
@@ -235,6 +235,234 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
 #define smp_mb__before_atomic_inc()	smp_mb()
 #define smp_mb__after_atomic_inc()	smp_mb()
 
+#ifndef CONFIG_GENERIC_ATOMIC64
+typedef struct {
+	u64 __aligned(8) counter;
+} atomic64_t;
+
+#define ATOMIC64_INIT(i) { (i) }
+
+static inline u64 atomic64_read(atomic64_t *v)
+{
+	u64 result;
+
+	__asm__ __volatile__("@ atomic64_read\n"
+"	ldrexd	%0, %H0, [%1]"
+	: "=&r" (result)
+	: "r" (&v->counter)
+	);
+
+	return result;
+}
+
+static inline void atomic64_set(atomic64_t *v, u64 i)
+{
+	u64 tmp;
+
+	__asm__ __volatile__("@ atomic64_set\n"
+"1:	ldrexd	%0, %H0, [%1]\n"
+"	strexd	%0, %2, %H2, [%1]\n"
+"	teq	%0, #0\n"
+"	bne	1b"
+	: "=&r" (tmp)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+}
+
+static inline void atomic64_add(u64 i, atomic64_t *v)
+{
+	u64 result;
+	unsigned long tmp;
+
+	__asm__ __volatile__("@ atomic64_add\n"
+"1:	ldrexd	%0, %H0, [%2]\n"
+"	adds	%0, %0, %3\n"
+"	adc	%H0, %H0, %H3\n"
+"	strexd	%1, %0, %H0, [%2]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+	: "=&r" (result), "=&r" (tmp)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+}
+
+static inline u64 atomic64_add_return(u64 i, atomic64_t *v)
+{
+	u64 result;
+	unsigned long tmp;
+
+	smp_mb();
+
+	__asm__ __volatile__("@ atomic64_add_return\n"
+"1:	ldrexd	%0, %H0, [%2]\n"
+"	adds	%0, %0, %3\n"
+"	adc	%H0, %H0, %H3\n"
+"	strexd	%1, %0, %H0, [%2]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+	: "=&r" (result), "=&r" (tmp)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+
+	smp_mb();
+
+	return result;
+}
+
+static inline void atomic64_sub(u64 i, atomic64_t *v)
+{
+	u64 result;
+	unsigned long tmp;
+
+	__asm__ __volatile__("@ atomic64_sub\n"
+"1:	ldrexd	%0, %H0, [%2]\n"
+"	subs	%0, %0, %3\n"
+"	sbc	%H0, %H0, %H3\n"
+"	strexd	%1, %0, %H0, [%2]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+	: "=&r" (result), "=&r" (tmp)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+}
+
+static inline u64 atomic64_sub_return(u64 i, atomic64_t *v)
+{
+	u64 result;
+	unsigned long tmp;
+
+	smp_mb();
+
+	__asm__ __volatile__("@ atomic64_sub_return\n"
+"1:	ldrexd	%0, %H0, [%2]\n"
+"	subs	%0, %0, %3\n"
+"	sbc	%H0, %H0, %H3\n"
+"	strexd	%1, %0, %H0, [%2]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+	: "=&r" (result), "=&r" (tmp)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+
+	smp_mb();
+
+	return result;
+}
+
+static inline u64 atomic64_cmpxchg(atomic64_t *ptr, u64 old, u64 new)
+{
+	u64 oldval;
+	unsigned long res;
+
+	smp_mb();
+
+	do {
+		__asm__ __volatile__("@ atomic64_cmpxchg\n"
+		"ldrexd		%1, %H1, [%2]\n"
+		"mov		%0, #0\n"
+		"teq		%1, %3\n"
+		"teqeq		%H1, %H3\n"
+		"strexdeq	%0, %4, %H4, [%2]"
+		: "=&r" (res), "=&r" (oldval)
+		: "r" (&ptr->counter), "r" (old), "r" (new)
+		: "cc");
+	} while (res);
+
+	smp_mb();
+
+	return oldval;
+}
+
+static inline u64 atomic64_xchg(atomic64_t *ptr, u64 new)
+{
+	u64 result;
+	unsigned long tmp;
+
+	smp_mb();
+
+	__asm__ __volatile__("@ atomic64_xchg\n"
+"1:	ldrexd	%0, %H0, [%2]\n"
+"	strexd	%1, %3, %H3, [%2]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+	: "=&r" (result), "=&r" (tmp)
+	: "r" (&ptr->counter), "r" (new)
+	: "cc");
+
+	smp_mb();
+
+	return result;
+}
+
+static inline u64 atomic64_dec_if_positive(atomic64_t *v)
+{
+	u64 result;
+	unsigned long tmp;
+
+	smp_mb();
+
+	__asm__ __volatile__("@ atomic64_dec_if_positive\n"
+"1:	ldrexd	%0, %H0, [%2]\n"
+"	subs	%0, %0, #1\n"
+"	sbc	%H0, %H0, #0\n"
+"	teq	%H0, #0\n"
+"	bmi	2f\n"
+"	strexd	%1, %0, %H0, [%2]\n"
+"	teq	%1, #0\n"
+"	bne	1b\n"
+"2:"
+	: "=&r" (result), "=&r" (tmp)
+	: "r" (&v->counter)
+	: "cc");
+
+	smp_mb();
+
+	return result;
+}
+
+static inline int atomic64_add_unless(atomic64_t *v, u64 a, u64 u)
+{
+	u64 val;
+	unsigned long tmp;
+	int ret = 1;
+
+	smp_mb();
+
+	__asm__ __volatile__("@ atomic64_add_unless\n"
+"1:	ldrexd	%0, %H0, [%3]\n"
+"	teq	%0, %4\n"
+"	teqeq	%H0, %H4\n"
+"	moveq	%1, #0\n"
+"	beq	2f\n"
+"	adds	%0, %0, %5\n"
+"	adc	%H0, %H0, %H5\n"
+"	strexd	%2, %0, %H0, [%3]\n"
+"	teq	%2, #0\n"
+"	bne	1b\n"
+"2:"
+	: "=&r" (val), "=&r" (ret), "=&r" (tmp)
+	: "r" (&v->counter), "r" (u), "r" (a)
+	: "cc");
+
+	if (ret)
+		smp_mb();
+
+	return ret;
+}
+
+#define atomic64_add_negative(a, v)	(atomic64_add_return((a), (v)) < 0)
+#define atomic64_inc(v)			atomic64_add(1LL, (v))
+#define atomic64_inc_return(v)		atomic64_add_return(1LL, (v))
+#define atomic64_inc_and_test(v)	(atomic64_inc_return(v) == 0)
+#define atomic64_sub_and_test(a, v)	(atomic64_sub_return((a), (v)) == 0)
+#define atomic64_dec(v)			atomic64_sub(1LL, (v))
+#define atomic64_dec_return(v)		atomic64_sub_return(1LL, (v))
+#define atomic64_dec_and_test(v)	(atomic64_dec_return((v)) == 0)
+#define atomic64_inc_not_zero(v)	atomic64_add_unless((v), 1LL, 0LL)
+
+#else /* !CONFIG_GENERIC_ATOMIC64 */
+#include <asm-generic/atomic64.h>
+#endif
 #include <asm-generic/atomic-long.h>
 #endif
 #endif
-- 
cgit v1.2.3


From c5113b61baf7a9a8616eca83e20847e7fecdc679 Mon Sep 17 00:00:00 2001
From: Rabin Vincent <rabin@rab.in>
Date: Mon, 25 Jan 2010 19:43:03 +0100
Subject: ARM: 5897/1: spinlock: don't use deprecated barriers on ARMv7

On ARMv7, the use of the cp15 operations for barriers is deprecated
in favour of the isb, dsb, and dmb instructions.  Change the locking
functions to use the appropriate type of dsb for the architecture
being built for.

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/include/asm/spinlock.h | 36 +++++++++++++++++++++++-------------
 1 file changed, 23 insertions(+), 13 deletions(-)

diff --git a/arch/arm/include/asm/spinlock.h b/arch/arm/include/asm/spinlock.h
index c91c64cab922..17eb355707dd 100644
--- a/arch/arm/include/asm/spinlock.h
+++ b/arch/arm/include/asm/spinlock.h
@@ -5,6 +5,22 @@
 #error SMP not supported on pre-ARMv6 CPUs
 #endif
 
+static inline void dsb_sev(void)
+{
+#if __LINUX_ARM_ARCH__ >= 7
+	__asm__ __volatile__ (
+		"dsb\n"
+		"sev"
+	);
+#elif defined(CONFIG_CPU_32v6K)
+	__asm__ __volatile__ (
+		"mcr p15, 0, %0, c7, c10, 4\n"
+		"sev"
+		: : "r" (0)
+	);
+#endif
+}
+
 /*
  * ARMv6 Spin-locking.
  *
@@ -69,13 +85,11 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
 
 	__asm__ __volatile__(
 "	str	%1, [%0]\n"
-#ifdef CONFIG_CPU_32v6K
-"	mcr	p15, 0, %1, c7, c10, 4\n" /* DSB */
-"	sev"
-#endif
 	:
 	: "r" (&lock->lock), "r" (0)
 	: "cc");
+
+	dsb_sev();
 }
 
 /*
@@ -132,13 +146,11 @@ static inline void arch_write_unlock(arch_rwlock_t *rw)
 
 	__asm__ __volatile__(
 	"str	%1, [%0]\n"
-#ifdef CONFIG_CPU_32v6K
-"	mcr	p15, 0, %1, c7, c10, 4\n" /* DSB */
-"	sev\n"
-#endif
 	:
 	: "r" (&rw->lock), "r" (0)
 	: "cc");
+
+	dsb_sev();
 }
 
 /* write_can_lock - would write_trylock() succeed? */
@@ -188,14 +200,12 @@ static inline void arch_read_unlock(arch_rwlock_t *rw)
 "	strex	%1, %0, [%2]\n"
 "	teq	%1, #0\n"
 "	bne	1b"
-#ifdef CONFIG_CPU_32v6K
-"\n	cmp	%0, #0\n"
-"	mcreq   p15, 0, %0, c7, c10, 4\n"
-"	seveq"
-#endif
 	: "=&r" (tmp), "=&r" (tmp2)
 	: "r" (&rw->lock)
 	: "cc");
+
+	if (tmp == 0)
+		dsb_sev();
 }
 
 static inline int arch_read_trylock(arch_rwlock_t *rw)
-- 
cgit v1.2.3


From 48ab7e09e0a7c00a217f87e4b57dfbee9c603e79 Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jeremy.kerr@canonical.com>
Date: Wed, 27 Jan 2010 01:13:31 +0100
Subject: ARM: 5906/1: arm: change command_line to cmd_line

drivers/of/fdt expects a cmd_line symbol, while arm uses command_line.
Change to the former, so that we can eventually share with the fdt
code.

Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/kernel/setup.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index b01a56a03ed8..baf5959d639a 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -118,7 +118,7 @@ EXPORT_SYMBOL(elf_platform);
 
 static const char *cpu_name;
 static const char *machine_name;
-static char __initdata command_line[COMMAND_LINE_SIZE];
+static char __initdata cmd_line[COMMAND_LINE_SIZE];
 
 static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
 static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '?', '?', 'b' } };
@@ -707,9 +707,9 @@ void __init setup_arch(char **cmdline_p)
 	/* parse_early_param needs a boot_command_line */
 	strlcpy(boot_command_line, from, COMMAND_LINE_SIZE);
 
-	/* populate command_line too for later use, preserving boot_command_line */
-	strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
-	*cmdline_p = command_line;
+	/* populate cmd_line too for later use, preserving boot_command_line */
+	strlcpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE);
+	*cmdline_p = cmd_line;
 
 	parse_early_param();
 
-- 
cgit v1.2.3


From 11805bcfa411c816b7c76fc40724be6733c74ffc Mon Sep 17 00:00:00 2001
From: Catalin Marinas <catalin.marinas@arm.com>
Date: Tue, 26 Jan 2010 19:09:42 +0100
Subject: ARM: 5905/1: ARM: Global ASID allocation on SMP

The current ASID allocation algorithm doesn't ensure the notification
of the other CPUs when the ASID rolls over. This may lead to two
processes using the same ASID (but different generation) or multiple
threads of the same process using different ASIDs.

This patch adds the broadcasting of the ASID rollover event to the
other CPUs. To avoid a race on multiple CPUs modifying "cpu_last_asid"
during the handling of the broadcast, the ASID numbering now starts at
"smp_processor_id() + 1". At rollover, the cpu_last_asid will be set
to NR_CPUS.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/include/asm/mmu.h         |   1 +
 arch/arm/include/asm/mmu_context.h |  15 +++++
 arch/arm/mm/context.c              | 124 ++++++++++++++++++++++++++++++++-----
 3 files changed, 126 insertions(+), 14 deletions(-)

diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h
index b561584d04a1..68870c776671 100644
--- a/arch/arm/include/asm/mmu.h
+++ b/arch/arm/include/asm/mmu.h
@@ -6,6 +6,7 @@
 typedef struct {
 #ifdef CONFIG_CPU_HAS_ASID
 	unsigned int id;
+	spinlock_t id_lock;
 #endif
 	unsigned int kvm_seq;
 } mm_context_t;
diff --git a/arch/arm/include/asm/mmu_context.h b/arch/arm/include/asm/mmu_context.h
index de6cefb329dd..a0b3cac0547c 100644
--- a/arch/arm/include/asm/mmu_context.h
+++ b/arch/arm/include/asm/mmu_context.h
@@ -43,12 +43,23 @@ void __check_kvm_seq(struct mm_struct *mm);
 #define ASID_FIRST_VERSION	(1 << ASID_BITS)
 
 extern unsigned int cpu_last_asid;
+#ifdef CONFIG_SMP
+DECLARE_PER_CPU(struct mm_struct *, current_mm);
+#endif
 
 void __init_new_context(struct task_struct *tsk, struct mm_struct *mm);
 void __new_context(struct mm_struct *mm);
 
 static inline void check_context(struct mm_struct *mm)
 {
+	/*
+	 * This code is executed with interrupts enabled. Therefore,
+	 * mm->context.id cannot be updated to the latest ASID version
+	 * on a different CPU (and condition below not triggered)
+	 * without first getting an IPI to reset the context. The
+	 * alternative is to take a read_lock on mm->context.id_lock
+	 * (after changing its type to rwlock_t).
+	 */
 	if (unlikely((mm->context.id ^ cpu_last_asid) >> ASID_BITS))
 		__new_context(mm);
 
@@ -108,6 +119,10 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
 		__flush_icache_all();
 #endif
 	if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next) {
+#ifdef CONFIG_SMP
+		struct mm_struct **crt_mm = &per_cpu(current_mm, cpu);
+		*crt_mm = next;
+#endif
 		check_context(next);
 		cpu_switch_mm(next->pgd, next);
 		if (cache_is_vivt())
diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c
index a9e22e31eaa1..b0ee9ba3cfab 100644
--- a/arch/arm/mm/context.c
+++ b/arch/arm/mm/context.c
@@ -10,12 +10,17 @@
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/percpu.h>
 
 #include <asm/mmu_context.h>
 #include <asm/tlbflush.h>
 
 static DEFINE_SPINLOCK(cpu_asid_lock);
 unsigned int cpu_last_asid = ASID_FIRST_VERSION;
+#ifdef CONFIG_SMP
+DEFINE_PER_CPU(struct mm_struct *, current_mm);
+#endif
 
 /*
  * We fork()ed a process, and we need a new context for the child
@@ -26,13 +31,109 @@ unsigned int cpu_last_asid = ASID_FIRST_VERSION;
 void __init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 {
 	mm->context.id = 0;
+	spin_lock_init(&mm->context.id_lock);
 }
 
+static void flush_context(void)
+{
+	/* set the reserved ASID before flushing the TLB */
+	asm("mcr	p15, 0, %0, c13, c0, 1\n" : : "r" (0));
+	isb();
+	local_flush_tlb_all();
+	if (icache_is_vivt_asid_tagged()) {
+		__flush_icache_all();
+		dsb();
+	}
+}
+
+#ifdef CONFIG_SMP
+
+static void set_mm_context(struct mm_struct *mm, unsigned int asid)
+{
+	unsigned long flags;
+
+	/*
+	 * Locking needed for multi-threaded applications where the
+	 * same mm->context.id could be set from different CPUs during
+	 * the broadcast. This function is also called via IPI so the
+	 * mm->context.id_lock has to be IRQ-safe.
+	 */
+	spin_lock_irqsave(&mm->context.id_lock, flags);
+	if (likely((mm->context.id ^ cpu_last_asid) >> ASID_BITS)) {
+		/*
+		 * Old version of ASID found. Set the new one and
+		 * reset mm_cpumask(mm).
+		 */
+		mm->context.id = asid;
+		cpumask_clear(mm_cpumask(mm));
+	}
+	spin_unlock_irqrestore(&mm->context.id_lock, flags);
+
+	/*
+	 * Set the mm_cpumask(mm) bit for the current CPU.
+	 */
+	cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm));
+}
+
+/*
+ * Reset the ASID on the current CPU. This function call is broadcast
+ * from the CPU handling the ASID rollover and holding cpu_asid_lock.
+ */
+static void reset_context(void *info)
+{
+	unsigned int asid;
+	unsigned int cpu = smp_processor_id();
+	struct mm_struct *mm = per_cpu(current_mm, cpu);
+
+	/*
+	 * Check if a current_mm was set on this CPU as it might still
+	 * be in the early booting stages and using the reserved ASID.
+	 */
+	if (!mm)
+		return;
+
+	smp_rmb();
+	asid = cpu_last_asid + cpu + 1;
+
+	flush_context();
+	set_mm_context(mm, asid);
+
+	/* set the new ASID */
+	asm("mcr	p15, 0, %0, c13, c0, 1\n" : : "r" (mm->context.id));
+	isb();
+}
+
+#else
+
+static inline void set_mm_context(struct mm_struct *mm, unsigned int asid)
+{
+	mm->context.id = asid;
+	cpumask_copy(mm_cpumask(mm), cpumask_of(smp_processor_id()));
+}
+
+#endif
+
 void __new_context(struct mm_struct *mm)
 {
 	unsigned int asid;
 
 	spin_lock(&cpu_asid_lock);
+#ifdef CONFIG_SMP
+	/*
+	 * Check the ASID again, in case the change was broadcast from
+	 * another CPU before we acquired the lock.
+	 */
+	if (unlikely(((mm->context.id ^ cpu_last_asid) >> ASID_BITS) == 0)) {
+		cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm));
+		spin_unlock(&cpu_asid_lock);
+		return;
+	}
+#endif
+	/*
+	 * At this point, it is guaranteed that the current mm (with
+	 * an old ASID) isn't active on any other CPU since the ASIDs
+	 * are changed simultaneously via IPI.
+	 */
 	asid = ++cpu_last_asid;
 	if (asid == 0)
 		asid = cpu_last_asid = ASID_FIRST_VERSION;
@@ -42,20 +143,15 @@ void __new_context(struct mm_struct *mm)
 	 * to start a new version and flush the TLB.
 	 */
 	if (unlikely((asid & ~ASID_MASK) == 0)) {
-		asid = ++cpu_last_asid;
-		/* set the reserved ASID before flushing the TLB */
-		asm("mcr	p15, 0, %0, c13, c0, 1	@ set reserved context ID\n"
-		    :
-		    : "r" (0));
-		isb();
-		flush_tlb_all();
-		if (icache_is_vivt_asid_tagged()) {
-			__flush_icache_all();
-			dsb();
-		}
+		asid = cpu_last_asid + smp_processor_id() + 1;
+		flush_context();
+#ifdef CONFIG_SMP
+		smp_wmb();
+		smp_call_function(reset_context, NULL, 1);
+#endif
+		cpu_last_asid += NR_CPUS;
 	}
-	spin_unlock(&cpu_asid_lock);
 
-	cpumask_copy(mm_cpumask(mm), cpumask_of(smp_processor_id()));
-	mm->context.id = asid;
+	set_mm_context(mm, asid);
+	spin_unlock(&cpu_asid_lock);
 }
-- 
cgit v1.2.3


From 1a28e3d977860dc760909083df625b300f695680 Mon Sep 17 00:00:00 2001
From: Tony Lindgren <tony@atomide.com>
Date: Mon, 1 Feb 2010 23:30:26 +0100
Subject: ARM: 5911/1: ARM: Select CPU_32v6K for CPU_V7 only if ARCH_OMAP2 is
 not selected

Otherwise the kernel built with both CPU_V6 and CPU_V7 will not
boot on omap2.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mm/Kconfig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index baf638487a2d..4c2e90dc549c 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -399,7 +399,7 @@ config CPU_V6
 config CPU_32v6K
 	bool "Support ARM V6K processor extensions" if !SMP
 	depends on CPU_V6
-	default y if SMP && !ARCH_MX3
+	default y if SMP && !(ARCH_MX3 || ARCH_OMAP2)
 	help
 	  Say Y here if your ARMv6 processor supports the 'K' extension.
 	  This enables the kernel to use some instructions not present
@@ -410,7 +410,7 @@ config CPU_32v6K
 # ARMv7
 config CPU_V7
 	bool "Support ARM V7 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX
-	select CPU_32v6K
+	select CPU_32v6K if !ARCH_OMAP2
 	select CPU_32v7
 	select CPU_ABRT_EV7
 	select CPU_PABRT_V7
-- 
cgit v1.2.3


From d23bc1b3a7e6db935acb9a949a5985d9b77dfd13 Mon Sep 17 00:00:00 2001
From: Daniel Jacobowitz <dan@codesourcery.com>
Date: Tue, 2 Feb 2010 18:22:16 +0100
Subject: ARM: 5912/1: Define a 32-bit Thumb-2 breakpoint instruction

Recognize 0xf7f0 0xa000 as a 32-bit breakpoint instruction for
Thumb-2.

Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/kernel/ptrace.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index a2ea3854cb3c..bd56673c6a69 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -499,10 +499,41 @@ static struct undef_hook thumb_break_hook = {
 	.fn		= break_trap,
 };
 
+static int thumb2_break_trap(struct pt_regs *regs, unsigned int instr)
+{
+	unsigned int instr2;
+	void __user *pc;
+
+	/* Check the second half of the instruction.  */
+	pc = (void __user *)(instruction_pointer(regs) + 2);
+
+	if (processor_mode(regs) == SVC_MODE) {
+		instr2 = *(u16 *) pc;
+	} else {
+		get_user(instr2, (u16 __user *)pc);
+	}
+
+	if (instr2 == 0xa000) {
+		ptrace_break(current, regs);
+		return 0;
+	} else {
+		return 1;
+	}
+}
+
+static struct undef_hook thumb2_break_hook = {
+	.instr_mask	= 0xffff,
+	.instr_val	= 0xf7f0,
+	.cpsr_mask	= PSR_T_BIT,
+	.cpsr_val	= PSR_T_BIT,
+	.fn		= thumb2_break_trap,
+};
+
 static int __init ptrace_break_init(void)
 {
 	register_undef_hook(&arm_break_hook);
 	register_undef_hook(&thumb_break_hook);
+	register_undef_hook(&thumb2_break_hook);
 	return 0;
 }
 
-- 
cgit v1.2.3


From 462f39a8c7496c95f4de91ef46d875f46e0fa271 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sat, 6 Feb 2010 10:35:23 +0000
Subject: ARM: ptrace: get rid of PTRACE_{PEEK,POKE}{TEXT,DATA}

The generic ptrace_request() handles these for us, so there's no
need to duplicate them in arch code.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/kernel/ptrace.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index bd56673c6a69..bdf002bab6a5 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -743,26 +743,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 	int ret;
 
 	switch (request) {
-		/*
-		 * read word at location "addr" in the child process.
-		 */
-		case PTRACE_PEEKTEXT:
-		case PTRACE_PEEKDATA:
-			ret = generic_ptrace_peekdata(child, addr, data);
-			break;
-
 		case PTRACE_PEEKUSR:
 			ret = ptrace_read_user(child, addr, (unsigned long __user *)data);
 			break;
 
-		/*
-		 * write the word at location addr.
-		 */
-		case PTRACE_POKETEXT:
-		case PTRACE_POKEDATA:
-			ret = generic_ptrace_pokedata(child, addr, data);
-			break;
-
 		case PTRACE_POKEUSR:
 			ret = ptrace_write_user(child, addr, data);
 			break;
-- 
cgit v1.2.3


From 54cb3dbb4a1cccd6b1bffc169ff638f8e74daf44 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sat, 6 Feb 2010 11:27:45 +0000
Subject: ARM: vfp: fix vfp_sync_state()

The more I look at vfp_sync_state(), the more I believe it's trying
to do its job in a really obscure way.

Essentially, last_VFP_context[] tracks who owns the state in the VFP
hardware.  If last_VFP_context[] is the context for the thread which
we're interested in, then the VFP hardware has context which is not
saved in the software state - so we need to bring the software state
up to date.

If last_VFP_context[] is for some other thread, we really don't care
what state the VFP hardware is in; it doesn't contain any information
pertinent to the thread we're trying to deal with - so don't touch
the hardware.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/vfp/vfpmodule.c | 36 ++++++++++++++++--------------------
 1 file changed, 16 insertions(+), 20 deletions(-)

diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index f60a5400a25b..86a57aeeda4a 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -444,32 +444,28 @@ void vfp_sync_state(struct thread_info *thread)
 void vfp_sync_state(struct thread_info *thread)
 {
 	unsigned int cpu = get_cpu();
-	u32 fpexc = fmrx(FPEXC);
 
 	/*
-	 * If VFP is enabled, the previous state was already saved and
-	 * last_VFP_context updated.
+	 * If the thread we're interested in is the current owner of the
+	 * hardware VFP state, then we need to save its state.
 	 */
-	if (fpexc & FPEXC_EN)
-		goto out;
-
-	if (!last_VFP_context[cpu])
-		goto out;
+	if (last_VFP_context[cpu] == &thread->vfpstate) {
+		u32 fpexc = fmrx(FPEXC);
 
-	/*
-	 * Save the last VFP state on this CPU.
-	 */
-	fmxr(FPEXC, fpexc | FPEXC_EN);
-	vfp_save_state(last_VFP_context[cpu], fpexc);
-	fmxr(FPEXC, fpexc);
+		/*
+		 * Save the last VFP state on this CPU.
+		 */
+		fmxr(FPEXC, fpexc | FPEXC_EN);
+		vfp_save_state(&thread->vfpstate, fpexc | FPEXC_EN);
+		fmxr(FPEXC, fpexc & ~FPEXC_EN);
 
-	/*
-	 * Set the context to NULL to force a reload the next time the thread
-	 * uses the VFP.
-	 */
-	last_VFP_context[cpu] = NULL;
+		/*
+		 * Set the context to NULL to force a reload the next time
+		 * the thread uses the VFP.
+		 */
+		last_VFP_context[cpu] = NULL;
+	}
 
-out:
 	put_cpu();
 }
 #endif
-- 
cgit v1.2.3


From ad187f956108e1c56b444706212bf08d84c0bee0 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sat, 6 Feb 2010 11:36:23 +0000
Subject: ARM: vfp ptrace: no point flushing hw context for PTRACE_GETVFPREGS

If we're only reading the VFP context via the ptrace call, there's
no need to invalidate the hardware context - we only need to do that
on PTRACE_SETVFPREGS.  This allows more efficient monitoring of a
traced task.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/include/asm/thread_info.h |  3 ++-
 arch/arm/kernel/ptrace.c           |  6 ++++--
 arch/arm/vfp/vfpmodule.c           | 25 +++++++++++++++++++++++--
 3 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index 2dfb7d7a66e9..b74970ec02c4 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -115,7 +115,8 @@ extern void iwmmxt_task_restore(struct thread_info *, void *);
 extern void iwmmxt_task_release(struct thread_info *);
 extern void iwmmxt_task_switch(struct thread_info *);
 
-extern void vfp_sync_state(struct thread_info *thread);
+extern void vfp_sync_hwstate(struct thread_info *);
+extern void vfp_flush_hwstate(struct thread_info *);
 
 #endif
 
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index bdf002bab6a5..08f899fb76a6 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -700,7 +700,7 @@ static int ptrace_getvfpregs(struct task_struct *tsk, void __user *data)
 	union vfp_state *vfp = &thread->vfpstate;
 	struct user_vfp __user *ufp = data;
 
-	vfp_sync_state(thread);
+	vfp_sync_hwstate(thread);
 
 	/* copy the floating point registers */
 	if (copy_to_user(&ufp->fpregs, &vfp->hard.fpregs,
@@ -723,7 +723,7 @@ static int ptrace_setvfpregs(struct task_struct *tsk, void __user *data)
 	union vfp_state *vfp = &thread->vfpstate;
 	struct user_vfp __user *ufp = data;
 
-	vfp_sync_state(thread);
+	vfp_sync_hwstate(thread);
 
 	/* copy the floating point registers */
 	if (copy_from_user(&vfp->hard.fpregs, &ufp->fpregs,
@@ -734,6 +734,8 @@ static int ptrace_setvfpregs(struct task_struct *tsk, void __user *data)
 	if (get_user(vfp->hard.fpscr, &ufp->fpscr))
 		return -EFAULT;
 
+	vfp_flush_hwstate(thread);
+
 	return 0;
 }
 #endif
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index 86a57aeeda4a..def19f83d812 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -430,7 +430,11 @@ static inline void vfp_pm_init(void) { }
  * saved one. This function is used by the ptrace mechanism.
  */
 #ifdef CONFIG_SMP
-void vfp_sync_state(struct thread_info *thread)
+void vfp_sync_hwstate(struct thread_info *thread)
+{
+}
+
+void vfp_flush_hwstate(struct thread_info *thread)
 {
 	/*
 	 * On SMP systems, the VFP state is automatically saved at every
@@ -441,7 +445,7 @@ void vfp_sync_state(struct thread_info *thread)
 	thread->vfpstate.hard.cpu = NR_CPUS;
 }
 #else
-void vfp_sync_state(struct thread_info *thread)
+void vfp_sync_hwstate(struct thread_info *thread)
 {
 	unsigned int cpu = get_cpu();
 
@@ -457,6 +461,23 @@ void vfp_sync_state(struct thread_info *thread)
 		 */
 		fmxr(FPEXC, fpexc | FPEXC_EN);
 		vfp_save_state(&thread->vfpstate, fpexc | FPEXC_EN);
+		fmxr(FPEXC, fpexc);
+	}
+
+	put_cpu();
+}
+
+void vfp_flush_hwstate(struct thread_info *thread)
+{
+	unsigned int cpu = get_cpu();
+
+	/*
+	 * If the thread we're interested in is the current owner of the
+	 * hardware VFP state, then we need to save its state.
+	 */
+	if (last_VFP_context[cpu] == &thread->vfpstate) {
+		u32 fpexc = fmrx(FPEXC);
+
 		fmxr(FPEXC, fpexc & ~FPEXC_EN);
 
 		/*
-- 
cgit v1.2.3


From 424d6b145f863d012c540082d0c1afb5bb4dea48 Mon Sep 17 00:00:00 2001
From: Santosh Shilimkar <santosh.shilimkar@ti.com>
Date: Thu, 4 Feb 2010 19:35:06 +0100
Subject: ARM: 5916/1: ARM: L2 : Add maintainace by line helper functions

This patch adds the cache maintainance by line helper functions.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mm/cache-l2x0.c | 36 ++++++++++++++++++++++++++----------
 1 file changed, 26 insertions(+), 10 deletions(-)

diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index cb8fc6573b1b..1a14d18e5713 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -42,6 +42,27 @@ static inline void cache_sync(void)
 	cache_wait(base + L2X0_CACHE_SYNC, 1);
 }
 
+static inline void l2x0_clean_line(unsigned long addr)
+{
+	void __iomem *base = l2x0_base;
+	cache_wait(base + L2X0_CLEAN_LINE_PA, 1);
+	writel(addr, base + L2X0_CLEAN_LINE_PA);
+}
+
+static inline void l2x0_inv_line(unsigned long addr)
+{
+	void __iomem *base = l2x0_base;
+	cache_wait(base + L2X0_INV_LINE_PA, 1);
+	writel(addr, base + L2X0_INV_LINE_PA);
+}
+
+static inline void l2x0_flush_line(unsigned long addr)
+{
+	void __iomem *base = l2x0_base;
+	cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
+	writel(addr, base + L2X0_CLEAN_INV_LINE_PA);
+}
+
 static inline void l2x0_inv_all(void)
 {
 	unsigned long flags;
@@ -62,23 +83,20 @@ static void l2x0_inv_range(unsigned long start, unsigned long end)
 	spin_lock_irqsave(&l2x0_lock, flags);
 	if (start & (CACHE_LINE_SIZE - 1)) {
 		start &= ~(CACHE_LINE_SIZE - 1);
-		cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
-		writel(start, base + L2X0_CLEAN_INV_LINE_PA);
+		l2x0_flush_line(start);
 		start += CACHE_LINE_SIZE;
 	}
 
 	if (end & (CACHE_LINE_SIZE - 1)) {
 		end &= ~(CACHE_LINE_SIZE - 1);
-		cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
-		writel(end, base + L2X0_CLEAN_INV_LINE_PA);
+		l2x0_flush_line(end);
 	}
 
 	while (start < end) {
 		unsigned long blk_end = start + min(end - start, 4096UL);
 
 		while (start < blk_end) {
-			cache_wait(base + L2X0_INV_LINE_PA, 1);
-			writel(start, base + L2X0_INV_LINE_PA);
+			l2x0_inv_line(start);
 			start += CACHE_LINE_SIZE;
 		}
 
@@ -103,8 +121,7 @@ static void l2x0_clean_range(unsigned long start, unsigned long end)
 		unsigned long blk_end = start + min(end - start, 4096UL);
 
 		while (start < blk_end) {
-			cache_wait(base + L2X0_CLEAN_LINE_PA, 1);
-			writel(start, base + L2X0_CLEAN_LINE_PA);
+			l2x0_clean_line(start);
 			start += CACHE_LINE_SIZE;
 		}
 
@@ -129,8 +146,7 @@ static void l2x0_flush_range(unsigned long start, unsigned long end)
 		unsigned long blk_end = start + min(end - start, 4096UL);
 
 		while (start < blk_end) {
-			cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
-			writel(start, base + L2X0_CLEAN_INV_LINE_PA);
+			l2x0_flush_line(start);
 			start += CACHE_LINE_SIZE;
 		}
 
-- 
cgit v1.2.3


From d309427e792ea750cdd312e7a92cf6047ae44962 Mon Sep 17 00:00:00 2001
From: Santosh Shilimkar <santosh.shilimkar@ti.com>
Date: Thu, 4 Feb 2010 19:37:09 +0100
Subject: ARM: 5917/1: OMAP4: Add L2 Cache support

This patch adds L2 Cache support for OMAP4. External L2 cache
is used in OMAP4

CC: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-omap2/board-4430sdp.c        | 54 ++++++++++++++++++++++++++++++
 arch/arm/mm/Kconfig                        |  2 +-
 arch/arm/plat-omap/include/plat/omap44xx.h |  1 +
 3 files changed, 56 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 0c6be6b4a7e2..8ba8fb5b2514 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -28,6 +28,7 @@
 #include <plat/control.h>
 #include <plat/timer-gp.h>
 #include <asm/hardware/gic.h>
+#include <asm/hardware/cache-l2x0.h>
 
 static struct platform_device sdp4430_lcd_device = {
 	.name		= "sdp4430_lcd",
@@ -50,6 +51,59 @@ static struct omap_board_config_kernel sdp4430_config[] __initdata = {
 	{ OMAP_TAG_LCD,		&sdp4430_lcd_config },
 };
 
+#ifdef CONFIG_CACHE_L2X0
+noinline void omap_smc1(u32 fn, u32 arg)
+{
+	register u32 r12 asm("r12") = fn;
+	register u32 r0 asm("r0") = arg;
+
+	/* This is common routine cache secure monitor API used to
+	 * modify the PL310 secure registers.
+	 * r0 contains the value to be modified and "r12" contains
+	 * the monitor API number. It uses few CPU registers
+	 * internally and hence they need be backed up including
+	 * link register "lr".
+	 * Explicitly save r11 and r12 the compiler generated code
+	 * won't save it.
+	 */
+	asm volatile(
+		"stmfd r13!, {r11,r12}\n"
+		"dsb\n"
+		"smc\n"
+		"ldmfd r13!, {r11,r12}\n"
+		: "+r" (r0), "+r" (r12)
+		:
+		: "r4", "r5", "r10", "lr", "cc");
+}
+EXPORT_SYMBOL(omap_smc1);
+
+static int __init omap_l2_cache_init(void)
+{
+	void __iomem *l2cache_base;
+
+	/* To avoid code running on other OMAPs in
+	 * multi-omap builds
+	 */
+	if (!cpu_is_omap44xx())
+		return -ENODEV;
+
+	/* Static mapping, never released */
+	l2cache_base = ioremap(OMAP44XX_L2CACHE_BASE, SZ_4K);
+	BUG_ON(!l2cache_base);
+
+	/* Enable PL310 L2 Cache controller */
+	omap_smc1(0x102, 0x1);
+
+	/* 32KB way size, 16-way associativity,
+	* parity disabled
+	*/
+	l2x0_init(l2cache_base, 0x0e050000, 0xc0000fff);
+
+	return 0;
+}
+early_initcall(omap_l2_cache_init);
+#endif
+
 static void __init gic_init_irq(void)
 {
 	void __iomem *base;
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 4c2e90dc549c..e859743024a0 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -754,7 +754,7 @@ config CACHE_FEROCEON_L2_WRITETHROUGH
 config CACHE_L2X0
 	bool "Enable the L2x0 outer cache controller"
 	depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176 || \
-		   REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31 || MACH_REALVIEW_PBX || ARCH_NOMADIK
+		   REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31 || MACH_REALVIEW_PBX || ARCH_NOMADIK || ARCH_OMAP4
 	default y
 	select OUTER_CACHE
 	help
diff --git a/arch/arm/plat-omap/include/plat/omap44xx.h b/arch/arm/plat-omap/include/plat/omap44xx.h
index ef870de43c29..c7d628ecb467 100644
--- a/arch/arm/plat-omap/include/plat/omap44xx.h
+++ b/arch/arm/plat-omap/include/plat/omap44xx.h
@@ -40,6 +40,7 @@
 #define OMAP44XX_GIC_CPU_BASE		0x48240100
 #define OMAP44XX_SCU_BASE		0x48240000
 #define OMAP44XX_LOCAL_TWD_BASE		0x48240600
+#define OMAP44XX_L2CACHE_BASE		0x48242000
 #define OMAP44XX_WKUPGEN_BASE		0x48281000
 
 #define OMAP44XX_MAILBOX_BASE		(L4_44XX_BASE + 0xF4000)
-- 
cgit v1.2.3


From 9e65582a8e8715f883a34eea66e0643778ce878d Mon Sep 17 00:00:00 2001
From: Santosh Shilimkar <santosh.shilimkar@ti.com>
Date: Thu, 4 Feb 2010 19:42:42 +0100
Subject: ARM: 5919/1: ARM: L2 : Errata 588369: Clean & Invalidate do not
 invalidate clean lines

This patch implements the work-around for the errata 588369.The secure
API is used to alter L2 debug register because of trust-zone.

This version updated with comments from Russell and Catalin and
generated against 2.6.33-rc6 mainline kernel. Detail
comments can be found:
http://www.spinics.net/lists/linux-omap/msg23431.html

Signed-off-by: Woodruff Richard <r-woodruff2@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/Kconfig         | 13 +++++++++++++
 arch/arm/mm/cache-l2x0.c | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 762ae536f909..0f1ad743ccdd 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -924,6 +924,19 @@ config ARM_ERRATA_460075
 	  ACTLR register. Note that setting specific bits in the ACTLR register
 	  may not be available in non-secure mode.
 
+config PL310_ERRATA_588369
+	bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
+	depends on CACHE_L2X0 && ARCH_OMAP4
+	help
+	   The PL310 L2 cache controller implements three types of Clean &
+	   Invalidate maintenance operations: by Physical Address
+	   (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
+	   They are architecturally defined to behave as the execution of a
+	   clean operation followed immediately by an invalidate operation,
+	   both performing to the same memory location. This functionality
+	   is not correctly implemented in PL310 as clean lines are not
+	   invalidated as a result of these operations. Note that this errata
+	   uses Texas Instrument's secure monitor api.
 endmenu
 
 source "arch/arm/common/Kconfig"
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 1a14d18e5713..07334632d3e2 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -56,12 +56,42 @@ static inline void l2x0_inv_line(unsigned long addr)
 	writel(addr, base + L2X0_INV_LINE_PA);
 }
 
+#ifdef CONFIG_PL310_ERRATA_588369
+static void debug_writel(unsigned long val)
+{
+	extern void omap_smc1(u32 fn, u32 arg);
+
+	/*
+	 * Texas Instrument secure monitor api to modify the
+	 * PL310 Debug Control Register.
+	 */
+	omap_smc1(0x100, val);
+}
+
+static inline void l2x0_flush_line(unsigned long addr)
+{
+	void __iomem *base = l2x0_base;
+
+	/* Clean by PA followed by Invalidate by PA */
+	cache_wait(base + L2X0_CLEAN_LINE_PA, 1);
+	writel(addr, base + L2X0_CLEAN_LINE_PA);
+	cache_wait(base + L2X0_INV_LINE_PA, 1);
+	writel(addr, base + L2X0_INV_LINE_PA);
+}
+#else
+
+/* Optimised out for non-errata case */
+static inline void debug_writel(unsigned long val)
+{
+}
+
 static inline void l2x0_flush_line(unsigned long addr)
 {
 	void __iomem *base = l2x0_base;
 	cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
 	writel(addr, base + L2X0_CLEAN_INV_LINE_PA);
 }
+#endif
 
 static inline void l2x0_inv_all(void)
 {
@@ -83,13 +113,17 @@ static void l2x0_inv_range(unsigned long start, unsigned long end)
 	spin_lock_irqsave(&l2x0_lock, flags);
 	if (start & (CACHE_LINE_SIZE - 1)) {
 		start &= ~(CACHE_LINE_SIZE - 1);
+		debug_writel(0x03);
 		l2x0_flush_line(start);
+		debug_writel(0x00);
 		start += CACHE_LINE_SIZE;
 	}
 
 	if (end & (CACHE_LINE_SIZE - 1)) {
 		end &= ~(CACHE_LINE_SIZE - 1);
+		debug_writel(0x03);
 		l2x0_flush_line(end);
+		debug_writel(0x00);
 	}
 
 	while (start < end) {
@@ -145,10 +179,12 @@ static void l2x0_flush_range(unsigned long start, unsigned long end)
 	while (start < end) {
 		unsigned long blk_end = start + min(end - start, 4096UL);
 
+		debug_writel(0x03);
 		while (start < blk_end) {
 			l2x0_flush_line(start);
 			start += CACHE_LINE_SIZE;
 		}
+		debug_writel(0x00);
 
 		if (blk_end < end) {
 			spin_unlock_irqrestore(&l2x0_lock, flags);
-- 
cgit v1.2.3


From 22192b37bbeec5d850c233491f3cb7610363ce34 Mon Sep 17 00:00:00 2001
From: Santosh Shilimkar <santosh.shilimkar@ti.com>
Date: Thu, 4 Feb 2010 19:44:52 +0100
Subject: ARM: 5920/1: OMAP4: Enable L2 Cache

This patch enables L2 cache and associated Errata on the
OMAP4430 SDP.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/configs/omap_4430sdp_defconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/configs/omap_4430sdp_defconfig b/arch/arm/configs/omap_4430sdp_defconfig
index 3de640ac294b..c48d7b893869 100644
--- a/arch/arm/configs/omap_4430sdp_defconfig
+++ b/arch/arm/configs/omap_4430sdp_defconfig
@@ -242,10 +242,13 @@ CONFIG_CPU_CP15_MMU=y
 # CONFIG_CPU_DCACHE_DISABLE is not set
 # CONFIG_CPU_BPREDICT_DISABLE is not set
 CONFIG_HAS_TLS_REG=y
+CONFIG_OUTER_CACHE=y
+CONFIG_CACHE_L2X0=y
 CONFIG_ARM_L1_CACHE_SHIFT=5
 # CONFIG_ARM_ERRATA_430973 is not set
 # CONFIG_ARM_ERRATA_458693 is not set
 # CONFIG_ARM_ERRATA_460075 is not set
+CONFIG_PL310_ERRATA_588369=y
 CONFIG_ARM_GIC=y
 
 #
-- 
cgit v1.2.3


From db9ef1af4879c121c354ad2f653f185f1d50fd89 Mon Sep 17 00:00:00 2001
From: Fenkart/Bostandzhyan <andreas.fenkart@streamunlimited.com>
Date: Sun, 7 Feb 2010 21:45:47 +0100
Subject: ARM: 5926/1: Add "Virtual kernel memory..." printout.

Code based on parisc and x86_32.

Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mm/init.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 69 insertions(+), 9 deletions(-)

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index a340569b991e..e8e3a74ac5b5 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -23,6 +23,7 @@
 #include <asm/setup.h>
 #include <asm/sizes.h>
 #include <asm/tlb.h>
+#include <asm/fixmap.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -562,7 +563,7 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi)
  */
 void __init mem_init(void)
 {
-	unsigned int codesize, datasize, initsize;
+	unsigned long reserved_pages, free_pages;
 	int i, node;
 
 #ifndef CONFIG_DISCONTIGMEM
@@ -598,6 +599,33 @@ void __init mem_init(void)
 	totalram_pages += totalhigh_pages;
 #endif
 
+	reserved_pages = free_pages = 0;
+
+	for_each_online_node(node) {
+		pg_data_t *n = NODE_DATA(node);
+		struct page *map = pgdat_page_nr(n, 0) - n->node_start_pfn;
+
+		for_each_nodebank(i, &meminfo, node) {
+			struct membank *bank = &meminfo.bank[i];
+			unsigned int pfn1, pfn2;
+			struct page *page, *end;
+
+			pfn1 = bank_pfn_start(bank);
+			pfn2 = bank_pfn_end(bank);
+
+			page = map + pfn1;
+			end  = map + pfn2;
+
+			do {
+				if (PageReserved(page))
+					reserved_pages++;
+				else if (!page_count(page))
+					free_pages++;
+				page++;
+			} while (page < end);
+		}
+	}
+
 	/*
 	 * Since our memory may not be contiguous, calculate the
 	 * real number of pages we have in this system
@@ -610,16 +638,48 @@ void __init mem_init(void)
 	}
 	printk(" = %luMB total\n", num_physpages >> (20 - PAGE_SHIFT));
 
-	codesize = _etext - _text;
-	datasize = _end - _data;
-	initsize = __init_end - __init_begin;
-
-	printk(KERN_NOTICE "Memory: %luKB available (%dK code, "
-		"%dK data, %dK init, %luK highmem)\n",
-		nr_free_pages() << (PAGE_SHIFT-10), codesize >> 10,
-		datasize >> 10, initsize >> 10,
+	printk(KERN_NOTICE "Memory: %luk/%luk available, %luk reserved, %luK highmem\n",
+		nr_free_pages() << (PAGE_SHIFT-10),
+		free_pages << (PAGE_SHIFT-10),
+		reserved_pages << (PAGE_SHIFT-10),
 		totalhigh_pages << (PAGE_SHIFT-10));
 
+#define MLK(b, t) b, t, ((t) - (b)) >> 10
+#define MLM(b, t) b, t, ((t) - (b)) >> 20
+#define MLK_ROUNDUP(b, t) b, t, DIV_ROUND_UP(((t) - (b)), SZ_1K)
+
+	printk(KERN_NOTICE "Virtual kernel memory layout:\n"
+			"    vector  : 0x%08lx - 0x%08lx   (%4ld kB)\n"
+			"    fixmap  : 0x%08lx - 0x%08lx   (%4ld kB)\n"
+			"    vmalloc : 0x%08lx - 0x%08lx   (%4ld MB)\n"
+			"    lowmem  : 0x%08lx - 0x%08lx   (%4ld MB)\n"
+#ifdef CONFIG_HIGHMEM
+			"    pkmap   : 0x%08lx - 0x%08lx   (%4ld MB)\n"
+#endif
+			"    modules : 0x%08lx - 0x%08lx   (%4ld MB)\n"
+			"      .init : 0x%p" " - 0x%p" "   (%4d kB)\n"
+			"      .text : 0x%p" " - 0x%p" "   (%4d kB)\n"
+			"      .data : 0x%p" " - 0x%p" "   (%4d kB)\n",
+
+			MLK(UL(CONFIG_VECTORS_BASE), UL(CONFIG_VECTORS_BASE) +
+				(PAGE_SIZE)),
+			MLK(FIXADDR_START, FIXADDR_TOP),
+			MLM(VMALLOC_START, (unsigned long)VMALLOC_END),
+			MLM(PAGE_OFFSET, (unsigned long)high_memory),
+#ifdef CONFIG_HIGHMEM
+			MLM(PKMAP_BASE, (PKMAP_BASE) + (LAST_PKMAP) *
+				(PAGE_SIZE)),
+#endif
+			MLM(MODULES_VADDR, MODULES_END),
+
+			MLK_ROUNDUP(__init_begin, __init_end),
+			MLK_ROUNDUP(_text, _etext),
+			MLK_ROUNDUP(_data, _edata));
+
+#undef MLK
+#undef MLM
+#undef MLK_ROUNDUP
+
 	if (PAGE_SIZE >= 16384 && num_physpages <= 128) {
 		extern int sysctl_overcommit_memory;
 		/*
-- 
cgit v1.2.3


From a7bd08c82e4f74387a39eeebb942712f23967420 Mon Sep 17 00:00:00 2001
From: Fenkart/Bostandzhyan <andreas.fenkart@streamunlimited.com>
Date: Sun, 7 Feb 2010 21:46:33 +0100
Subject: ARM: 5927/1: Make delimiters of DMA area globally visibly.

Adds DMA area to 'virtual memory map' startup message

Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/include/asm/memory.h | 19 +++++++++++--------
 arch/arm/mm/dma-mapping.c     |  3 ---
 arch/arm/mm/init.c            |  6 ++++++
 3 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 5421d82a2572..f5e693b8bab3 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -76,6 +76,17 @@
  */
 #define IOREMAP_MAX_ORDER	24
 
+/*
+ * Size of DMA-consistent memory region.  Must be multiple of 2M,
+ * between 2MB and 14MB inclusive.
+ */
+#ifndef CONSISTENT_DMA_SIZE
+#define CONSISTENT_DMA_SIZE 	SZ_2M
+#endif
+
+#define CONSISTENT_END		(0xffe00000UL)
+#define CONSISTENT_BASE		(CONSISTENT_END - CONSISTENT_DMA_SIZE)
+
 #else /* CONFIG_MMU */
 
 /*
@@ -112,14 +123,6 @@
 
 #endif /* !CONFIG_MMU */
 
-/*
- * Size of DMA-consistent memory region.  Must be multiple of 2M,
- * between 2MB and 14MB inclusive.
- */
-#ifndef CONSISTENT_DMA_SIZE
-#define CONSISTENT_DMA_SIZE SZ_2M
-#endif
-
 /*
  * Physical vs virtual RAM address space conversion.  These are
  * private definitions which should NOT be used outside memory.h
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 26325cb5d368..48eedab1609b 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -29,9 +29,6 @@
 #error "CONSISTENT_DMA_SIZE must be multiple of 2MiB"
 #endif
 
-#define CONSISTENT_END	(0xffe00000)
-#define CONSISTENT_BASE	(CONSISTENT_END - CONSISTENT_DMA_SIZE)
-
 #define CONSISTENT_OFFSET(x)	(((unsigned long)(x) - CONSISTENT_BASE) >> PAGE_SHIFT)
 #define CONSISTENT_PTE_INDEX(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PGDIR_SHIFT)
 #define NUM_CONSISTENT_PTES (CONSISTENT_DMA_SIZE >> PGDIR_SHIFT)
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index e8e3a74ac5b5..bda481e6bc0f 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -651,6 +651,9 @@ void __init mem_init(void)
 	printk(KERN_NOTICE "Virtual kernel memory layout:\n"
 			"    vector  : 0x%08lx - 0x%08lx   (%4ld kB)\n"
 			"    fixmap  : 0x%08lx - 0x%08lx   (%4ld kB)\n"
+#ifdef CONFIG_MMU
+			"    DMA     : 0x%08lx - 0x%08lx   (%4ld MB)\n"
+#endif
 			"    vmalloc : 0x%08lx - 0x%08lx   (%4ld MB)\n"
 			"    lowmem  : 0x%08lx - 0x%08lx   (%4ld MB)\n"
 #ifdef CONFIG_HIGHMEM
@@ -664,6 +667,9 @@ void __init mem_init(void)
 			MLK(UL(CONFIG_VECTORS_BASE), UL(CONFIG_VECTORS_BASE) +
 				(PAGE_SIZE)),
 			MLK(FIXADDR_START, FIXADDR_TOP),
+#ifdef CONFIG_MMU
+			MLM(CONSISTENT_BASE, CONSISTENT_END),
+#endif
 			MLM(VMALLOC_START, (unsigned long)VMALLOC_END),
 			MLM(PAGE_OFFSET, (unsigned long)high_memory),
 #ifdef CONFIG_HIGHMEM
-- 
cgit v1.2.3


From c931b4f655a1b86c929384e674eb8c31795f3bd7 Mon Sep 17 00:00:00 2001
From: Fenkart/Bostandzhyan <andreas.fenkart@streamunlimited.com>
Date: Sun, 7 Feb 2010 21:47:17 +0100
Subject: ARM: 5928/1: Change type of VMALLOC_END to unsigned long.

Makes it consistent with VMALLOC_START

Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/include/asm/memory.h                 | 4 ++--
 arch/arm/include/asm/pgtable-nommu.h          | 4 ++--
 arch/arm/mach-davinci/include/mach/hardware.h | 2 +-
 arch/arm/mach-dove/include/mach/vmalloc.h     | 2 +-
 arch/arm/mach-ep93xx/include/mach/vmalloc.h   | 2 +-
 arch/arm/mach-gemini/include/mach/vmalloc.h   | 2 +-
 arch/arm/mach-iop32x/include/mach/vmalloc.h   | 2 +-
 arch/arm/mach-iop33x/include/mach/vmalloc.h   | 2 +-
 arch/arm/mach-ixp2000/include/mach/vmalloc.h  | 2 +-
 arch/arm/mach-ixp23xx/include/mach/vmalloc.h  | 2 +-
 arch/arm/mach-ixp4xx/include/mach/vmalloc.h   | 2 +-
 arch/arm/mach-kirkwood/include/mach/vmalloc.h | 2 +-
 arch/arm/mach-lh7a40x/include/mach/vmalloc.h  | 2 +-
 arch/arm/mach-loki/include/mach/vmalloc.h     | 2 +-
 arch/arm/mach-mmp/include/mach/vmalloc.h      | 2 +-
 arch/arm/mach-mv78xx0/include/mach/vmalloc.h  | 2 +-
 arch/arm/mach-nomadik/include/mach/vmalloc.h  | 2 +-
 arch/arm/mach-ns9xxx/include/mach/vmalloc.h   | 2 +-
 arch/arm/mach-orion5x/include/mach/vmalloc.h  | 2 +-
 arch/arm/mach-pxa/include/mach/vmalloc.h      | 2 +-
 arch/arm/mach-realview/include/mach/vmalloc.h | 2 +-
 arch/arm/mach-s3c24a0/include/mach/vmalloc.h  | 2 +-
 arch/arm/mach-sa1100/include/mach/vmalloc.h   | 2 +-
 arch/arm/mach-u300/include/mach/vmalloc.h     | 2 +-
 arch/arm/mach-ux500/include/mach/vmalloc.h    | 2 +-
 arch/arm/mach-w90x900/include/mach/vmalloc.h  | 2 +-
 arch/arm/mm/init.c                            | 2 +-
 arch/arm/plat-mxc/include/mach/vmalloc.h      | 2 +-
 arch/arm/plat-s3c/include/mach/vmalloc.h      | 2 +-
 arch/arm/plat-stmp3xxx/include/mach/vmalloc.h | 2 +-
 30 files changed, 32 insertions(+), 32 deletions(-)

diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index f5e693b8bab3..4312ee5e3d0b 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -104,11 +104,11 @@
 #endif
 
 #ifndef PHYS_OFFSET
-#define PHYS_OFFSET 		(CONFIG_DRAM_BASE)
+#define PHYS_OFFSET 		UL(CONFIG_DRAM_BASE)
 #endif
 
 #ifndef END_MEM
-#define END_MEM     		(CONFIG_DRAM_BASE + CONFIG_DRAM_SIZE)
+#define END_MEM     		(UL(CONFIG_DRAM_BASE) + CONFIG_DRAM_SIZE)
 #endif
 
 #ifndef PAGE_OFFSET
diff --git a/arch/arm/include/asm/pgtable-nommu.h b/arch/arm/include/asm/pgtable-nommu.h
index b011f2e939aa..013cfcdc4839 100644
--- a/arch/arm/include/asm/pgtable-nommu.h
+++ b/arch/arm/include/asm/pgtable-nommu.h
@@ -86,8 +86,8 @@ extern unsigned int kobjsize(const void *objp);
  * All 32bit addresses are effectively valid for vmalloc...
  * Sort of meaningless for non-VM targets.
  */
-#define	VMALLOC_START	0
-#define	VMALLOC_END	0xffffffff
+#define	VMALLOC_START	0UL
+#define	VMALLOC_END	0xffffffffUL
 
 #define FIRST_USER_ADDRESS      (0)
 
diff --git a/arch/arm/mach-davinci/include/mach/hardware.h b/arch/arm/mach-davinci/include/mach/hardware.h
index 41c89386e39b..c45ba1f62a11 100644
--- a/arch/arm/mach-davinci/include/mach/hardware.h
+++ b/arch/arm/mach-davinci/include/mach/hardware.h
@@ -27,7 +27,7 @@
 /*
  * I/O mapping
  */
-#define IO_PHYS				0x01c00000
+#define IO_PHYS				0x01c00000UL
 #define IO_OFFSET			0xfd000000 /* Virtual IO = 0xfec00000 */
 #define IO_SIZE				0x00400000
 #define IO_VIRT				(IO_PHYS + IO_OFFSET)
diff --git a/arch/arm/mach-dove/include/mach/vmalloc.h b/arch/arm/mach-dove/include/mach/vmalloc.h
index 8b2c974755c6..a28792cf761e 100644
--- a/arch/arm/mach-dove/include/mach/vmalloc.h
+++ b/arch/arm/mach-dove/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
  * arch/arm/mach-dove/include/mach/vmalloc.h
  */
 
-#define VMALLOC_END	0xfd800000
+#define VMALLOC_END	0xfd800000UL
diff --git a/arch/arm/mach-ep93xx/include/mach/vmalloc.h b/arch/arm/mach-ep93xx/include/mach/vmalloc.h
index aed21cd3fe2d..1b3f25d03d39 100644
--- a/arch/arm/mach-ep93xx/include/mach/vmalloc.h
+++ b/arch/arm/mach-ep93xx/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
  * arch/arm/mach-ep93xx/include/mach/vmalloc.h
  */
 
-#define VMALLOC_END	0xfe800000
+#define VMALLOC_END	0xfe800000UL
diff --git a/arch/arm/mach-gemini/include/mach/vmalloc.h b/arch/arm/mach-gemini/include/mach/vmalloc.h
index 83e536d9436c..45371eb86fcb 100644
--- a/arch/arm/mach-gemini/include/mach/vmalloc.h
+++ b/arch/arm/mach-gemini/include/mach/vmalloc.h
@@ -7,4 +7,4 @@
  * (at your option) any later version.
  */
 
-#define VMALLOC_END	0xF0000000
+#define VMALLOC_END	0xf0000000UL
diff --git a/arch/arm/mach-iop32x/include/mach/vmalloc.h b/arch/arm/mach-iop32x/include/mach/vmalloc.h
index 85ceb09d85f0..c4862d48e583 100644
--- a/arch/arm/mach-iop32x/include/mach/vmalloc.h
+++ b/arch/arm/mach-iop32x/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
  * arch/arm/mach-iop32x/include/mach/vmalloc.h
  */
 
-#define VMALLOC_END	0xfe000000
+#define VMALLOC_END	0xfe000000UL
diff --git a/arch/arm/mach-iop33x/include/mach/vmalloc.h b/arch/arm/mach-iop33x/include/mach/vmalloc.h
index f9f99dea9bc4..48331dc23704 100644
--- a/arch/arm/mach-iop33x/include/mach/vmalloc.h
+++ b/arch/arm/mach-iop33x/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
  * arch/arm/mach-iop33x/include/mach/vmalloc.h
  */
 
-#define VMALLOC_END	0xfe000000
+#define VMALLOC_END	0xfe000000UL
diff --git a/arch/arm/mach-ixp2000/include/mach/vmalloc.h b/arch/arm/mach-ixp2000/include/mach/vmalloc.h
index d195e35aed3b..61c8dae24f95 100644
--- a/arch/arm/mach-ixp2000/include/mach/vmalloc.h
+++ b/arch/arm/mach-ixp2000/include/mach/vmalloc.h
@@ -17,4 +17,4 @@
  * The vmalloc() routines leaves a hole of 4kB between each vmalloced
  * area for the same reason. ;)
  */
-#define VMALLOC_END	    0xfb000000
+#define VMALLOC_END	    0xfb000000UL
diff --git a/arch/arm/mach-ixp23xx/include/mach/vmalloc.h b/arch/arm/mach-ixp23xx/include/mach/vmalloc.h
index dd519f678d10..896c56a1c00e 100644
--- a/arch/arm/mach-ixp23xx/include/mach/vmalloc.h
+++ b/arch/arm/mach-ixp23xx/include/mach/vmalloc.h
@@ -7,4 +7,4 @@
  * specific static I/O.
  */
 
-#define VMALLOC_END	(0xec000000)
+#define VMALLOC_END	(0xec000000UL)
diff --git a/arch/arm/mach-ixp4xx/include/mach/vmalloc.h b/arch/arm/mach-ixp4xx/include/mach/vmalloc.h
index 7b3580b53adf..9bcd64d59854 100644
--- a/arch/arm/mach-ixp4xx/include/mach/vmalloc.h
+++ b/arch/arm/mach-ixp4xx/include/mach/vmalloc.h
@@ -1,5 +1,5 @@
 /*
  * arch/arm/mach-ixp4xx/include/mach/vmalloc.h
  */
-#define VMALLOC_END       (0xFF000000)
+#define VMALLOC_END       (0xff000000UL)
 
diff --git a/arch/arm/mach-kirkwood/include/mach/vmalloc.h b/arch/arm/mach-kirkwood/include/mach/vmalloc.h
index 8f48260dcdad..bf162ca3d2c1 100644
--- a/arch/arm/mach-kirkwood/include/mach/vmalloc.h
+++ b/arch/arm/mach-kirkwood/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
  * arch/arm/mach-kirkwood/include/mach/vmalloc.h
  */
 
-#define VMALLOC_END	0xfe800000
+#define VMALLOC_END	0xfe800000UL
diff --git a/arch/arm/mach-lh7a40x/include/mach/vmalloc.h b/arch/arm/mach-lh7a40x/include/mach/vmalloc.h
index 3fbd49490bb9..d62da7358b16 100644
--- a/arch/arm/mach-lh7a40x/include/mach/vmalloc.h
+++ b/arch/arm/mach-lh7a40x/include/mach/vmalloc.h
@@ -7,4 +7,4 @@
  *  version 2 as published by the Free Software Foundation.
  *
  */
-#define VMALLOC_END       (0xe8000000)
+#define VMALLOC_END       (0xe8000000UL)
diff --git a/arch/arm/mach-loki/include/mach/vmalloc.h b/arch/arm/mach-loki/include/mach/vmalloc.h
index 8dc3bfcbf9f0..5dcbd865443f 100644
--- a/arch/arm/mach-loki/include/mach/vmalloc.h
+++ b/arch/arm/mach-loki/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
  * arch/arm/mach-loki/include/mach/vmalloc.h
  */
 
-#define VMALLOC_END	0xfe800000
+#define VMALLOC_END	0xfe800000UL
diff --git a/arch/arm/mach-mmp/include/mach/vmalloc.h b/arch/arm/mach-mmp/include/mach/vmalloc.h
index b60ccaf9fee7..1d0bac003ad0 100644
--- a/arch/arm/mach-mmp/include/mach/vmalloc.h
+++ b/arch/arm/mach-mmp/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
  * linux/arch/arm/mach-mmp/include/mach/vmalloc.h
  */
 
-#define VMALLOC_END	0xfe000000
+#define VMALLOC_END	0xfe000000UL
diff --git a/arch/arm/mach-mv78xx0/include/mach/vmalloc.h b/arch/arm/mach-mv78xx0/include/mach/vmalloc.h
index 1c4954386a84..ba26fe98e640 100644
--- a/arch/arm/mach-mv78xx0/include/mach/vmalloc.h
+++ b/arch/arm/mach-mv78xx0/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
  * arch/arm/mach-mv78xx0/include/mach/vmalloc.h
  */
 
-#define VMALLOC_END	0xfe000000
+#define VMALLOC_END	0xfe000000UL
diff --git a/arch/arm/mach-nomadik/include/mach/vmalloc.h b/arch/arm/mach-nomadik/include/mach/vmalloc.h
index be12e31ea528..f83d574d9445 100644
--- a/arch/arm/mach-nomadik/include/mach/vmalloc.h
+++ b/arch/arm/mach-nomadik/include/mach/vmalloc.h
@@ -1,2 +1,2 @@
 
-#define VMALLOC_END       0xe8000000
+#define VMALLOC_END       0xe8000000UL
diff --git a/arch/arm/mach-ns9xxx/include/mach/vmalloc.h b/arch/arm/mach-ns9xxx/include/mach/vmalloc.h
index fe964d3bcc47..c8651974c4b0 100644
--- a/arch/arm/mach-ns9xxx/include/mach/vmalloc.h
+++ b/arch/arm/mach-ns9xxx/include/mach/vmalloc.h
@@ -11,6 +11,6 @@
 #ifndef __ASM_ARCH_VMALLOC_H
 #define __ASM_ARCH_VMALLOC_H
 
-#define VMALLOC_END     (0xf0000000)
+#define VMALLOC_END     (0xf0000000UL)
 
 #endif /* ifndef __ASM_ARCH_VMALLOC_H */
diff --git a/arch/arm/mach-orion5x/include/mach/vmalloc.h b/arch/arm/mach-orion5x/include/mach/vmalloc.h
index 7147a297e97f..06b50aeff7b9 100644
--- a/arch/arm/mach-orion5x/include/mach/vmalloc.h
+++ b/arch/arm/mach-orion5x/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
  * arch/arm/mach-orion5x/include/mach/vmalloc.h
  */
 
-#define VMALLOC_END       0xfd800000
+#define VMALLOC_END       0xfd800000UL
diff --git a/arch/arm/mach-pxa/include/mach/vmalloc.h b/arch/arm/mach-pxa/include/mach/vmalloc.h
index e90c5eeb81dd..bfecfbf5f460 100644
--- a/arch/arm/mach-pxa/include/mach/vmalloc.h
+++ b/arch/arm/mach-pxa/include/mach/vmalloc.h
@@ -8,4 +8,4 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-#define VMALLOC_END       (0xe8000000)
+#define VMALLOC_END       (0xe8000000UL)
diff --git a/arch/arm/mach-realview/include/mach/vmalloc.h b/arch/arm/mach-realview/include/mach/vmalloc.h
index fe0de1b507ac..a2a4c6861407 100644
--- a/arch/arm/mach-realview/include/mach/vmalloc.h
+++ b/arch/arm/mach-realview/include/mach/vmalloc.h
@@ -18,4 +18,4 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
-#define VMALLOC_END		0xf8000000
+#define VMALLOC_END		0xf8000000UL
diff --git a/arch/arm/mach-s3c24a0/include/mach/vmalloc.h b/arch/arm/mach-s3c24a0/include/mach/vmalloc.h
index 4d4fe4849589..914656820794 100644
--- a/arch/arm/mach-s3c24a0/include/mach/vmalloc.h
+++ b/arch/arm/mach-s3c24a0/include/mach/vmalloc.h
@@ -12,6 +12,6 @@
 #ifndef __ASM_ARCH_VMALLOC_H
 #define __ASM_ARCH_VMALLOC_H
 
-#define VMALLOC_END	  (0xE0000000)
+#define VMALLOC_END	  (0xe0000000UL)
 
 #endif /* __ASM_ARCH_VMALLOC_H */
diff --git a/arch/arm/mach-sa1100/include/mach/vmalloc.h b/arch/arm/mach-sa1100/include/mach/vmalloc.h
index ec8fdc5a3606..b3d002398480 100644
--- a/arch/arm/mach-sa1100/include/mach/vmalloc.h
+++ b/arch/arm/mach-sa1100/include/mach/vmalloc.h
@@ -1,4 +1,4 @@
 /*
  * arch/arm/mach-sa1100/include/mach/vmalloc.h
  */
-#define VMALLOC_END       (0xe8000000)
+#define VMALLOC_END       (0xe8000000UL)
diff --git a/arch/arm/mach-u300/include/mach/vmalloc.h b/arch/arm/mach-u300/include/mach/vmalloc.h
index b00c51a66fbe..ec423b92b81d 100644
--- a/arch/arm/mach-u300/include/mach/vmalloc.h
+++ b/arch/arm/mach-u300/include/mach/vmalloc.h
@@ -9,4 +9,4 @@
  * End must be above the I/O registers and on an even 2MiB boundary.
  * Author: Linus Walleij <linus.walleij@stericsson.com>
  */
-#define VMALLOC_END	0xfe800000
+#define VMALLOC_END	0xfe800000UL
diff --git a/arch/arm/mach-ux500/include/mach/vmalloc.h b/arch/arm/mach-ux500/include/mach/vmalloc.h
index 86cdbbce1842..a4945cb41172 100644
--- a/arch/arm/mach-ux500/include/mach/vmalloc.h
+++ b/arch/arm/mach-ux500/include/mach/vmalloc.h
@@ -15,4 +15,4 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
-#define VMALLOC_END	0xf0000000
+#define VMALLOC_END	0xf0000000UL
diff --git a/arch/arm/mach-w90x900/include/mach/vmalloc.h b/arch/arm/mach-w90x900/include/mach/vmalloc.h
index 2f9dfb928533..b067e44500a4 100644
--- a/arch/arm/mach-w90x900/include/mach/vmalloc.h
+++ b/arch/arm/mach-w90x900/include/mach/vmalloc.h
@@ -18,6 +18,6 @@
 #ifndef __ASM_ARCH_VMALLOC_H
 #define __ASM_ARCH_VMALLOC_H
 
-#define VMALLOC_END	  (0xE0000000)
+#define VMALLOC_END	  (0xe0000000UL)
 
 #endif /* __ASM_ARCH_VMALLOC_H */
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index bda481e6bc0f..3a2077239474 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -670,7 +670,7 @@ void __init mem_init(void)
 #ifdef CONFIG_MMU
 			MLM(CONSISTENT_BASE, CONSISTENT_END),
 #endif
-			MLM(VMALLOC_START, (unsigned long)VMALLOC_END),
+			MLM(VMALLOC_START, VMALLOC_END),
 			MLM(PAGE_OFFSET, (unsigned long)high_memory),
 #ifdef CONFIG_HIGHMEM
 			MLM(PKMAP_BASE, (PKMAP_BASE) + (LAST_PKMAP) *
diff --git a/arch/arm/plat-mxc/include/mach/vmalloc.h b/arch/arm/plat-mxc/include/mach/vmalloc.h
index 62d97623412f..44243a278434 100644
--- a/arch/arm/plat-mxc/include/mach/vmalloc.h
+++ b/arch/arm/plat-mxc/include/mach/vmalloc.h
@@ -21,6 +21,6 @@
 #define __ASM_ARCH_MXC_VMALLOC_H__
 
 /* vmalloc ending address */
-#define VMALLOC_END       0xF4000000
+#define VMALLOC_END       0xf4000000UL
 
 #endif /* __ASM_ARCH_MXC_VMALLOC_H__ */
diff --git a/arch/arm/plat-s3c/include/mach/vmalloc.h b/arch/arm/plat-s3c/include/mach/vmalloc.h
index bfd2ca6e3074..299d95f365c9 100644
--- a/arch/arm/plat-s3c/include/mach/vmalloc.h
+++ b/arch/arm/plat-s3c/include/mach/vmalloc.h
@@ -15,6 +15,6 @@
 #ifndef __ASM_ARCH_VMALLOC_H
 #define __ASM_ARCH_VMALLOC_H
 
-#define VMALLOC_END	  (0xE0000000)
+#define VMALLOC_END	  (0xe0000000UL)
 
 #endif /* __ASM_ARCH_VMALLOC_H */
diff --git a/arch/arm/plat-stmp3xxx/include/mach/vmalloc.h b/arch/arm/plat-stmp3xxx/include/mach/vmalloc.h
index 541b880c1863..943c1a29d641 100644
--- a/arch/arm/plat-stmp3xxx/include/mach/vmalloc.h
+++ b/arch/arm/plat-stmp3xxx/include/mach/vmalloc.h
@@ -9,4 +9,4 @@
  * http://www.opensource.org/licenses/gpl-license.html
  * http://www.gnu.org/copyleft/gpl.html
  */
-#define VMALLOC_END       (0xF0000000)
+#define VMALLOC_END       0xf0000000UL
-- 
cgit v1.2.3


From a183927213df225bd93d21857b6aaafbb95e590d Mon Sep 17 00:00:00 2001
From: Fenkart/Bostandzhyan <andreas.fenkart@streamunlimited.com>
Date: Sun, 7 Feb 2010 21:47:58 +0100
Subject: ARM: 5929/1: Add checks to detect overlap of memory regions.

Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com>

Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mm/init.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 3a2077239474..7829cb5425f5 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -686,6 +686,23 @@ void __init mem_init(void)
 #undef MLM
 #undef MLK_ROUNDUP
 
+	/*
+	 * Check boundaries twice: Some fundamental inconsistencies can
+	 * be detected at build time already.
+	 */
+#ifdef CONFIG_MMU
+	BUILD_BUG_ON(VMALLOC_END			> CONSISTENT_BASE);
+	BUG_ON(VMALLOC_END				> CONSISTENT_BASE);
+
+	BUILD_BUG_ON(TASK_SIZE				> MODULES_VADDR);
+	BUG_ON(TASK_SIZE 				> MODULES_VADDR);
+#endif
+
+#ifdef CONFIG_HIGHMEM
+	BUILD_BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > PAGE_OFFSET);
+	BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE	> PAGE_OFFSET);
+#endif
+
 	if (PAGE_SIZE >= 16384 && num_physpages <= 128) {
 		extern int sysctl_overcommit_memory;
 		/*
-- 
cgit v1.2.3


From 18fe1cad889fe6c1acbf4dfc576e82a13cf1a30c Mon Sep 17 00:00:00 2001
From: Fenkart/Bostandzhyan <andreas.fenkart@streamunlimited.com>
Date: Sun, 7 Feb 2010 21:48:38 +0100
Subject: ARM: 5930/1: Add PKMAP area description to memory.txt.

Also adapts delimiters of neighbouring modules area.

Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 Documentation/arm/memory.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/arm/memory.txt b/Documentation/arm/memory.txt
index 9d58c7c5eddd..eb0fae18ffb1 100644
--- a/Documentation/arm/memory.txt
+++ b/Documentation/arm/memory.txt
@@ -59,7 +59,11 @@ PAGE_OFFSET	high_memory-1	Kernel direct-mapped RAM region.
 				This maps the platforms RAM, and typically
 				maps all platform RAM in a 1:1 relationship.
 
-TASK_SIZE	PAGE_OFFSET-1	Kernel module space
+PKMAP_BASE	PAGE_OFFSET-1	Permanent kernel mappings
+				One way of mapping HIGHMEM pages into kernel
+				space.
+
+MODULES_VADDR	MODULES_END-1	Kernel module space
 				Kernel modules inserted via insmod are
 				placed here using dynamic mappings.
 
-- 
cgit v1.2.3


From 3b43816f685fc6c2531f43514662f796f4601ffc Mon Sep 17 00:00:00 2001
From: Rabin Vincent <rabin.vincent@stericsson.com>
Date: Fri, 12 Feb 2010 06:43:11 +0100
Subject: ARM: 5933/1: amba-pl011: support hardware flow control

Enable/disable automatic hardware flow control as requested by the
termios.  The controller does not allow us to control the RTS line when
auto-RTS is enabled, so we enable auto-RTS only if the kernel has not
disabled RTS.

Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 drivers/serial/amba-pl011.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index ef7adc8135dd..ce6c35333ff7 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -71,6 +71,7 @@ struct uart_amba_port {
 	unsigned int		im;	/* interrupt mask */
 	unsigned int		old_status;
 	unsigned int		ifls;	/* vendor-specific */
+	bool			autorts;
 };
 
 /* There is by now at least one vendor with differing details, so handle it */
@@ -308,6 +309,11 @@ static void pl011_set_mctrl(struct uart_port *port, unsigned int mctrl)
 	TIOCMBIT(TIOCM_OUT1, UART011_CR_OUT1);
 	TIOCMBIT(TIOCM_OUT2, UART011_CR_OUT2);
 	TIOCMBIT(TIOCM_LOOP, UART011_CR_LBE);
+
+	if (uap->autorts) {
+		/* We need to disable auto-RTS if we want to turn RTS off */
+		TIOCMBIT(TIOCM_RTS, UART011_CR_RTSEN);
+	}
 #undef TIOCMBIT
 
 	writew(cr, uap->port.membase + UART011_CR);
@@ -437,6 +443,7 @@ static void pl011_shutdown(struct uart_port *port)
 	/*
 	 * disable the port
 	 */
+	uap->autorts = false;
 	writew(UART01x_CR_UARTEN | UART011_CR_TXE, uap->port.membase + UART011_CR);
 
 	/*
@@ -456,6 +463,7 @@ static void
 pl011_set_termios(struct uart_port *port, struct ktermios *termios,
 		     struct ktermios *old)
 {
+	struct uart_amba_port *uap = (struct uart_amba_port *)port;
 	unsigned int lcr_h, old_cr;
 	unsigned long flags;
 	unsigned int baud, quot;
@@ -532,6 +540,17 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
 	old_cr = readw(port->membase + UART011_CR);
 	writew(0, port->membase + UART011_CR);
 
+	if (termios->c_cflag & CRTSCTS) {
+		if (old_cr & UART011_CR_RTS)
+			old_cr |= UART011_CR_RTSEN;
+
+		old_cr |= UART011_CR_CTSEN;
+		uap->autorts = true;
+	} else {
+		old_cr &= ~(UART011_CR_CTSEN | UART011_CR_RTSEN);
+		uap->autorts = false;
+	}
+
 	/* Set baud rate */
 	writew(quot & 0x3f, port->membase + UART011_FBRD);
 	writew(quot >> 6, port->membase + UART011_IBRD);
-- 
cgit v1.2.3


From d6d502fa4be1acd01971476fc732c95a4da16d90 Mon Sep 17 00:00:00 2001
From: Kukjin Kim <kgene.kim@samsung.com>
Date: Mon, 22 Feb 2010 00:02:59 +0100
Subject: ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each
 ARCH Kconfig

Add ARM_L1_CACHE_SHIFT_6 to arch/arm/Kconfig to allow CPUs with
L1 cache lines which are 64bytes to indicate this without having to
alter the arch/arm/mm/Kconfig entry each time.

Update the mm Kconfig so that ARM_L1_CACHE_SHIFT default value
uses this and change OMAP3 and S5PC1XX to select ARM_L1_CACHE_SHIFT_6.

Acked-by: Ben Dooks <ben-linux@fluff.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/Kconfig           | 6 ++++++
 arch/arm/mm/Kconfig        | 2 +-
 arch/arm/plat-omap/Kconfig | 1 +
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 0f1ad743ccdd..04247ba31d69 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -165,6 +165,11 @@ config ARCH_MTD_XIP
 config GENERIC_HARDIRQS_NO__DO_IRQ
 	def_bool y
 
+config ARM_L1_CACHE_SHIFT_6
+	bool
+	help
+	  Setting ARM L1 cache line size to 64 Bytes.
+
 if OPROFILE
 
 config OPROFILE_ARMV6
@@ -642,6 +647,7 @@ config ARCH_S5PC1XX
 	select GENERIC_GPIO
 	select HAVE_CLK
 	select CPU_V7
+	select ARM_L1_CACHE_SHIFT_6
 	help
 	  Samsung S5PC1XX series based systems
 
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index e859743024a0..c4ed9f93f646 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -779,5 +779,5 @@ config CACHE_XSC3L2
 
 config ARM_L1_CACHE_SHIFT
 	int
-	default 6 if ARCH_OMAP3 || ARCH_S5PC1XX
+	default 6 if ARM_L1_CACHE_SHIFT_6
 	default 5
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index e2ea04a4c8a1..2e3eec660864 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -22,6 +22,7 @@ config ARCH_OMAP3
 	bool "TI OMAP3"
 	select CPU_V7
 	select COMMON_CLKDEV
+	select ARM_L1_CACHE_SHIFT_6
 
 config ARCH_OMAP4
 	bool "TI OMAP4"
-- 
cgit v1.2.3


From 5de813b6cd06460b337f9da9afe316823cf3ef45 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Thu, 25 Feb 2010 12:14:40 +0000
Subject: ARM: Eliminate decompressor -Dstatic= PIC hack

We used to build decompressors with -Dstatic= to avoid any local data
being generated.  The problem is that local data generates GOTOFF
relocations, which means we can't relocate the data relative to the
text segment.

Global data, on the other hand, goes through the GOT, and can be
relocated anywhere.

Unfortunately, with the new decompressors, this presents a problem
since they declare static data within functions, and this leads to
stack overflow.

Fix this by separating out the decompressor code into a separate file,
and removing 'static' from BSS data in misc.c.

Also, discard the .data section - this means that should we end up
with read/write initialized data, the decompressor will fail to link
and the problem will be obvious.

Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/boot/compressed/Makefile       |   6 +-
 arch/arm/boot/compressed/decompress.c   |  45 +++++++++++++
 arch/arm/boot/compressed/misc.c         | 109 ++++----------------------------
 arch/arm/boot/compressed/vmlinux.lds.in |   8 ++-
 4 files changed, 64 insertions(+), 104 deletions(-)
 create mode 100644 arch/arm/boot/compressed/decompress.c

diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 2d4d88ba73bf..97c89e7de7d3 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -5,7 +5,7 @@
 #
 
 HEAD	= head.o
-OBJS	= misc.o
+OBJS	= misc.o decompress.o
 FONTC	= $(srctree)/drivers/video/console/font_acorn_8x8.c
 
 #
@@ -106,10 +106,6 @@ lib1funcs = $(obj)/lib1funcs.o
 $(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
 	$(call cmd,shipped)
 
-# Don't allow any static data in misc.o, which
-# would otherwise mess up our GOT table
-CFLAGS_misc.o := -Dstatic=
-
 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
 	 	$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
 	$(call if_changed,ld)
diff --git a/arch/arm/boot/compressed/decompress.c b/arch/arm/boot/compressed/decompress.c
new file mode 100644
index 000000000000..0da382f33157
--- /dev/null
+++ b/arch/arm/boot/compressed/decompress.c
@@ -0,0 +1,45 @@
+#define _LINUX_STRING_H_
+
+#include <linux/compiler.h>	/* for inline */
+#include <linux/types.h>	/* for size_t */
+#include <linux/stddef.h>	/* for NULL */
+#include <linux/linkage.h>
+#include <asm/string.h>
+
+extern unsigned long free_mem_ptr;
+extern unsigned long free_mem_end_ptr;
+extern void error(char *);
+
+#define STATIC static
+
+#define ARCH_HAS_DECOMP_WDOG
+
+/* Diagnostic functions */
+#ifdef DEBUG
+#  define Assert(cond,msg) {if(!(cond)) error(msg);}
+#  define Trace(x) fprintf x
+#  define Tracev(x) {if (verbose) fprintf x ;}
+#  define Tracevv(x) {if (verbose>1) fprintf x ;}
+#  define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
+#  define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
+#else
+#  define Assert(cond,msg)
+#  define Trace(x)
+#  define Tracev(x)
+#  define Tracevv(x)
+#  define Tracec(c,x)
+#  define Tracecv(c,x)
+#endif
+
+#ifdef CONFIG_KERNEL_GZIP
+#include "../../../../lib/decompress_inflate.c"
+#endif
+
+#ifdef CONFIG_KERNEL_LZO
+#include "../../../../lib/decompress_unlzo.c"
+#endif
+
+void do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x))
+{
+	decompress(input, len, NULL, NULL, output, NULL, error);
+}
diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c
index 7e0fe4d42c7b..4c663fbe0a05 100644
--- a/arch/arm/boot/compressed/misc.c
+++ b/arch/arm/boot/compressed/misc.c
@@ -23,8 +23,8 @@ unsigned int __machine_arch_type;
 #include <linux/compiler.h>	/* for inline */
 #include <linux/types.h>	/* for size_t */
 #include <linux/stddef.h>	/* for NULL */
-#include <asm/string.h>
 #include <linux/linkage.h>
+#include <asm/string.h>
 
 #include <asm/unaligned.h>
 
@@ -106,57 +106,7 @@ static void putstr(const char *ptr)
 
 #endif
 
-#define __ptr_t void *
-
-#define memzero(s,n) __memzero(s,n)
-
-/*
- * Optimised C version of memzero for the ARM.
- */
-void __memzero (__ptr_t s, size_t n)
-{
-	union { void *vp; unsigned long *ulp; unsigned char *ucp; } u;
-	int i;
-
-	u.vp = s;
-
-	for (i = n >> 5; i > 0; i--) {
-		*u.ulp++ = 0;
-		*u.ulp++ = 0;
-		*u.ulp++ = 0;
-		*u.ulp++ = 0;
-		*u.ulp++ = 0;
-		*u.ulp++ = 0;
-		*u.ulp++ = 0;
-		*u.ulp++ = 0;
-	}
-
-	if (n & 1 << 4) {
-		*u.ulp++ = 0;
-		*u.ulp++ = 0;
-		*u.ulp++ = 0;
-		*u.ulp++ = 0;
-	}
-
-	if (n & 1 << 3) {
-		*u.ulp++ = 0;
-		*u.ulp++ = 0;
-	}
-
-	if (n & 1 << 2)
-		*u.ulp++ = 0;
-
-	if (n & 1 << 1) {
-		*u.ucp++ = 0;
-		*u.ucp++ = 0;
-	}
-
-	if (n & 1)
-		*u.ucp++ = 0;
-}
-
-static inline __ptr_t memcpy(__ptr_t __dest, __const __ptr_t __src,
-			    size_t __n)
+void *memcpy(void *__dest, __const void *__src, size_t __n)
 {
 	int i = 0;
 	unsigned char *d = (unsigned char *)__dest, *s = (unsigned char *)__src;
@@ -193,59 +143,20 @@ static inline __ptr_t memcpy(__ptr_t __dest, __const __ptr_t __src,
 /*
  * gzip delarations
  */
-#define STATIC static
-
-/* Diagnostic functions */
-#ifdef DEBUG
-#  define Assert(cond,msg) {if(!(cond)) error(msg);}
-#  define Trace(x) fprintf x
-#  define Tracev(x) {if (verbose) fprintf x ;}
-#  define Tracevv(x) {if (verbose>1) fprintf x ;}
-#  define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
-#  define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
-#else
-#  define Assert(cond,msg)
-#  define Trace(x)
-#  define Tracev(x)
-#  define Tracevv(x)
-#  define Tracec(c,x)
-#  define Tracecv(c,x)
-#endif
-
-static void error(char *m);
-
 extern char input_data[];
 extern char input_data_end[];
 
-static unsigned char *output_data;
-static unsigned long output_ptr;
-
-static void error(char *m);
+unsigned char *output_data;
+unsigned long output_ptr;
 
-static void putstr(const char *);
-
-static unsigned long free_mem_ptr;
-static unsigned long free_mem_end_ptr;
-
-#ifdef STANDALONE_DEBUG
-#define NO_INFLATE_MALLOC
-#endif
-
-#define ARCH_HAS_DECOMP_WDOG
-
-#ifdef CONFIG_KERNEL_GZIP
-#include "../../../../lib/decompress_inflate.c"
-#endif
-
-#ifdef CONFIG_KERNEL_LZO
-#include "../../../../lib/decompress_unlzo.c"
-#endif
+unsigned long free_mem_ptr;
+unsigned long free_mem_end_ptr;
 
 #ifndef arch_error
 #define arch_error(x)
 #endif
 
-static void error(char *x)
+void error(char *x)
 {
 	arch_error(x);
 
@@ -261,6 +172,8 @@ asmlinkage void __div0(void)
 	error("Attempting division by 0!");
 }
 
+extern void do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x));
+
 #ifndef STANDALONE_DEBUG
 
 unsigned long
@@ -281,8 +194,8 @@ decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p,
 	output_ptr = get_unaligned_le32(tmp);
 
 	putstr("Uncompressing Linux...");
-	decompress(input_data, input_data_end - input_data,
-			NULL, NULL, output_data, NULL, error);
+	do_decompress(input_data, input_data_end - input_data,
+			output_data, error);
 	putstr(" done, booting the kernel.\n");
 	return output_ptr;
 }
diff --git a/arch/arm/boot/compressed/vmlinux.lds.in b/arch/arm/boot/compressed/vmlinux.lds.in
index a5924b9b88bd..7ca9ecff652f 100644
--- a/arch/arm/boot/compressed/vmlinux.lds.in
+++ b/arch/arm/boot/compressed/vmlinux.lds.in
@@ -14,6 +14,13 @@ SECTIONS
   /DISCARD/ : {
     *(.ARM.exidx*)
     *(.ARM.extab*)
+    /*
+     * Discard any r/w data - this produces a link error if we have any,
+     * which is required for PIC decompression.  Local data generates
+     * GOTOFF relocations, which prevents it being relocated independently
+     * of the text/got segments.
+     */
+    *(.data)
   }
 
   . = TEXT_START;
@@ -40,7 +47,6 @@ SECTIONS
   .got			: { *(.got) }
   _got_end = .;
   .got.plt		: { *(.got.plt) }
-  .data			: { *(.data) }
   _edata = .;
 
   . = BSS_START;
-- 
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