Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM updates from Russell King:
"This is the first chunk of ARM updates for this merge window.
Conflicts are expected in two files - asm/timex.h and
mach-integrator/integrator_cp.c. Nothing particularly stands out more
than anything else.

Most of the growth is down to the opcodes stuff from Dave Martin,
which is countered by Rob's patches to use more of the asm-generic
headers on ARM."

(A few more conflicts grew since then, but it all looked fairly trivial)

* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (44 commits)
ARM: 7548/1: include linux/sched.h in syscall.h
ARM: 7541/1: Add ARM ERRATA 775420 workaround
ARM: ensure vm_struct has its phys_addr member filled in
ARM: 7540/1: kexec: Check segment memory addresses
ARM: 7539/1: kexec: scan for dtb magic in segments
ARM: 7538/1: delay: add registration mechanism for delay timer sources
ARM: 7536/1: smp: Formalize an IPI for wakeup
ARM: 7525/1: ptrace: use updated syscall number for syscall auditing
ARM: 7524/1: support syscall tracing
ARM: 7519/1: integrator: convert platform devices to Device Tree
ARM: 7518/1: integrator: convert AMBA devices to device tree
ARM: 7517/1: integrator: initial device tree support
ARM: 7516/1: plat-versatile: add DT support to FPGA IRQ
ARM: 7515/1: integrator: check PL010 base address from resource
ARM: 7514/1: integrator: call common init function from machine
ARM: 7522/1: arch_timers: register a time/cycle counter
ARM: 7523/1: arch_timers: enable the use of the virtual timer
ARM: 7531/1: mark kernelmode mem{cpy,set} non-experimental
ARM: 7520/1: Build dtb files in all target
ARM: Fix build warning in arch/arm/mm/alignment.c
...

Documentation/devicetree/bindings/arm/arm-boards

···
+ARM Integrator/AP (Application Platform) and Integrator/CP (Compact Platform)
+-----------------------------------------------------------------------------
+ARM's oldest Linux-supported platform with connectors for different core
+tiles of ARMv4, ARMv5 and ARMv6 type.
+
+Required properties (in root node):
+	compatible = "arm,integrator-ap";  /* Application Platform */
+	compatible = "arm,integrator-cp";  /* Compact Platform */
+
+FPGA type interrupt controllers, see the versatile-fpga-irq binding doc.
+
+
 ARM Versatile Application and Platform Baseboards
 -------------------------------------------------
 ARM's development hardware platform with connectors for customizable

Documentation/devicetree/bindings/arm/versatile-fpga-irq.txt

···
+* ARM Versatile FPGA interrupt controller
+
+One or more FPGA IRQ controllers can be synthesized in an ARM reference board
+such as the Integrator or Versatile family. The output of these different
+controllers are OR:ed together and fed to the CPU tile's IRQ input. Each
+instance can handle up to 32 interrupts.
+
+Required properties:
+- compatible: "arm,versatile-fpga-irq"
+- interrupt-controller: Identifies the node as an interrupt controller
+- #interrupt-cells: The number of cells to define the interrupts.  Must be 1
+  as the FPGA IRQ controller has no configuration options for interrupt
+  sources.  The cell is a u32 and defines the interrupt number.
+- reg: The register bank for the FPGA interrupt controller.
+- clear-mask: a u32 number representing the mask written to clear all IRQs
+  on the controller at boot for example.
+- valid-mask: a u32 number representing a bit mask determining which of
+  the interrupts are valid. Unconnected/unused lines are set to 0, and
+  the system till not make it possible for devices to request these
+  interrupts.
+
+Example:
+
+pic: pic@14000000 {
+        compatible = "arm,versatile-fpga-irq";
+        #interrupt-cells = <1>;
+        interrupt-controller;
+        reg = <0x14000000 0x100>;
+        clear-mask = <0xffffffff>;
+        valid-mask = <0x003fffff>;
+};

arch/arm/Kconfig

···
 	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
 	select HAVE_ARCH_KGDB
 	select HAVE_ARCH_TRACEHOOK
+	select HAVE_SYSCALL_TRACEPOINTS
 	select HAVE_KPROBES if !XIP_KERNEL
 	select HAVE_KRETPROBES if (HAVE_KPROBES)
 	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
···
 	  on systems with an outer cache, the store buffer is drained
 	  explicitly.
 
+config ARM_ERRATA_775420
+       bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
+       depends on CPU_V7
+       help
+	 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
+	 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
+	 operation aborts with MMU exception, it might cause the processor
+	 to deadlock. This workaround puts DSB before executing ISB if
+	 an abort may occur on cache maintenance.
+
 endmenu
 
 source "arch/arm/common/Kconfig"
···
 	  configuration it is safe to say N, otherwise say Y.
 
 config UACCESS_WITH_MEMCPY
-	bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
-	depends on MMU && EXPERIMENTAL
+	bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
+	depends on MMU
 	default y if CPU_FEROCEON
 	help
 	  Implement faster copy_to_user and clear_user methods for CPU
···
 	  neutralized via a kernel panic.
 	  This feature requires gcc version 4.2 or above.
 
-config DEPRECATED_PARAM_STRUCT
-	bool "Provide old way to pass kernel parameters"
-	help
-	  This was deprecated in 2001 and announced to live on for 5 years.
-	  Some old boot loaders still use this way.
-
 config XEN_DOM0
 	def_bool y
 	depends on XEN
···
 	select IRQ_DOMAIN
 	help
 	  Include support for flattened device tree machine descriptions.
+
+config ATAGS
+	bool "Support for the traditional ATAGS boot data passing" if USE_OF
+	default y
+	help
+	  This is the traditional way of passing data to the kernel at boot
+	  time. If you are solely relying on the flattened device tree (or
+	  the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
+	  to remove ATAGS support from your kernel binary.  If unsure,
+	  leave this to y.
+
+config DEPRECATED_PARAM_STRUCT
+	bool "Provide old way to pass kernel parameters"
+	depends on ATAGS
+	help
+	  This was deprecated in 2001 and announced to live on for 5 years.
+	  Some old boot loaders still use this way.
 
 # Compressed boot loader in ROM.  Yes, we really want to ask about
 # TEXT and BSS so we preserve their values in the config files.
···
 choice
 	prompt "Kernel command line type" if CMDLINE != ""
 	default CMDLINE_FROM_BOOTLOADER
+	depends on ATAGS
 
 config CMDLINE_FROM_BOOTLOADER
 	bool "Use bootloader kernel arguments if available"
···
 
 config ATAGS_PROC
 	bool "Export atags in procfs"
-	depends on KEXEC
+	depends on ATAGS && KEXEC
 	default y
 	help
 	  Should the atags used to boot the kernel be exported in an "atags"

arch/arm/Makefile

···
 KBUILD_IMAGE := zImage
 endif
 
-all:	$(KBUILD_IMAGE)
+# Build the DT binary blobs if we have OF configured
+ifeq ($(CONFIG_USE_OF),y)
+KBUILD_DTBS := dtbs
+endif
+
+all:	$(KBUILD_IMAGE) $(KBUILD_DTBS)
 
 boot := arch/arm/boot
 
···
   echo  '  uImage        - U-Boot wrapped zImage'
   echo  '  bootpImage    - Combined zImage and initial RAM disk' 
   echo  '                  (supply initrd image via make variable INITRD=<path>)'
-  echo  '  dtbs          - Build device tree blobs for enabled boards'
+  echo  '* dtbs          - Build device tree blobs for enabled boards'
   echo  '  install       - Install uncompressed kernel'
   echo  '  zinstall      - Install compressed kernel'
   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'

arch/arm/boot/compressed/decompress.c

···
 #  define Tracecv(c,x)
 #endif
 
+/* Not needed, but used in some headers pulled in by decompressors */
+extern char * strstr(const char * s1, const char *s2);
+
 #ifdef CONFIG_KERNEL_GZIP
 #include "../../../../lib/decompress_inflate.c"
 #endif

arch/arm/boot/dts/integrator.dtsi

···
+/*
+ * SoC core Device Tree for the ARM Integrator platforms
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+	timer@13000000 {
+		reg = <0x13000000 0x100>;
+		interrupt-parent = <&pic>;
+		interrupts = <5>;
+	};
+
+	timer@13000100 {
+		reg = <0x13000100 0x100>;
+		interrupt-parent = <&pic>;
+		interrupts = <6>;
+	};
+
+	timer@13000200 {
+		reg = <0x13000200 0x100>;
+		interrupt-parent = <&pic>;
+		interrupts = <7>;
+	};
+
+	pic@14000000 {
+		compatible = "arm,versatile-fpga-irq";
+		#interrupt-cells = <1>;
+		interrupt-controller;
+		reg = <0x14000000 0x100>;
+		clear-mask = <0xffffffff>;
+	};
+
+	flash@24000000 {
+		compatible = "cfi-flash";
+		reg = <0x24000000 0x02000000>;
+	};
+
+	fpga {
+		compatible = "arm,amba-bus", "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+		interrupt-parent = <&pic>;
+
+		/*
+		 * These PrimeCells are in the same locations and using the
+		 * same interrupts in all Integrators, however the silicon
+		 * version deployed is different.
+		 */
+		rtc@15000000 {
+			reg = <0x15000000 0x1000>;
+			interrupts = <8>;
+		};
+
+		uart@16000000 {
+			reg = <0x16000000 0x1000>;
+			interrupts = <1>;
+		};
+
+		uart@17000000 {
+			reg = <0x17000000 0x1000>;
+			interrupts = <2>;
+		};
+
+		kmi@18000000 {
+			reg = <0x18000000 0x1000>;
+			interrupts = <3>;
+		};
+
+		kmi@19000000 {
+			reg = <0x19000000 0x1000>;
+			interrupts = <4>;
+		};
+	};
+};

arch/arm/boot/dts/integratorap.dts

···
+/*
+ * Device Tree for the ARM Integrator/AP platform
+ */
+
+/dts-v1/;
+/include/ "integrator.dtsi"
+
+/ {
+	model = "ARM Integrator/AP";
+	compatible = "arm,integrator-ap";
+
+	aliases {
+		arm,timer-primary = &timer2;
+		arm,timer-secondary = &timer1;
+	};
+
+	chosen {
+		bootargs = "root=/dev/ram0 console=ttyAM0,38400n8 earlyprintk";
+	};
+
+	timer0: timer@13000000 {
+		compatible = "arm,integrator-timer";
+	};
+
+	timer1: timer@13000100 {
+		compatible = "arm,integrator-timer";
+	};
+
+	timer2: timer@13000200 {
+		compatible = "arm,integrator-timer";
+	};
+
+	pic: pic@14000000 {
+		valid-mask = <0x003fffff>;
+	};
+
+	fpga {
+		/*
+		 * The Integator/AP predates the idea to have magic numbers
+		 * identifying the PrimeCell in hardware, thus we have to
+		 * supply these from the device tree.
+		 */
+		rtc: rtc@15000000 {
+			compatible = "arm,pl030", "arm,primecell";
+			arm,primecell-periphid = <0x00041030>;
+		};
+
+		uart0: uart@16000000 {
+			compatible = "arm,pl010", "arm,primecell";
+			arm,primecell-periphid = <0x00041010>;
+		};
+
+		uart1: uart@17000000 {
+			compatible = "arm,pl010", "arm,primecell";
+			arm,primecell-periphid = <0x00041010>;
+		};
+
+		kmi0: kmi@18000000 {
+			compatible = "arm,pl050", "arm,primecell";
+			arm,primecell-periphid = <0x00041050>;
+		};
+
+		kmi1: kmi@19000000 {
+			compatible = "arm,pl050", "arm,primecell";
+			arm,primecell-periphid = <0x00041050>;
+		};
+	};
+};

arch/arm/boot/dts/integratorcp.dts

···
+/*
+ * Device Tree for the ARM Integrator/CP platform
+ */
+
+/dts-v1/;
+/include/ "integrator.dtsi"
+
+/ {
+	model = "ARM Integrator/CP";
+	compatible = "arm,integrator-cp";
+
+	aliases {
+		arm,timer-primary = &timer2;
+		arm,timer-secondary = &timer1;
+	};
+
+	chosen {
+		bootargs = "root=/dev/ram0 console=ttyAMA0,38400n8 earlyprintk";
+	};
+
+	timer0: timer@13000000 {
+		compatible = "arm,sp804", "arm,primecell";
+	};
+
+	timer1: timer@13000100 {
+		compatible = "arm,sp804", "arm,primecell";
+	};
+
+	timer2: timer@13000200 {
+		compatible = "arm,sp804", "arm,primecell";
+	};
+
+	pic: pic@14000000 {
+		valid-mask = <0x1fc003ff>;
+	};
+
+	cic: cic@10000040 {
+		compatible = "arm,versatile-fpga-irq";
+		#interrupt-cells = <1>;
+		interrupt-controller;
+		reg = <0x10000040 0x100>;
+		clear-mask = <0xffffffff>;
+		valid-mask = <0x00000007>;
+	};
+
+	sic: sic@ca000000 {
+		compatible = "arm,versatile-fpga-irq";
+		#interrupt-cells = <1>;
+		interrupt-controller;
+		reg = <0xca000000 0x100>;
+		clear-mask = <0x00000fff>;
+		valid-mask = <0x00000fff>;
+	};
+
+	ethernet@c8000000 {
+		compatible = "smsc,lan91c111";
+		reg = <0xc8000000 0x10>;
+		interrupt-parent = <&pic>;
+		interrupts = <27>;
+	};
+
+	fpga {
+		/*
+		 * These PrimeCells are at the same location and using
+		 * the same interrupts in all Integrators, but in the CP
+		 * slightly newer versions are deployed.
+		 */
+		rtc@15000000 {
+			compatible = "arm,pl031", "arm,primecell";
+		};
+
+		uart@16000000 {
+			compatible = "arm,pl011", "arm,primecell";
+		};
+
+		uart@17000000 {
+			compatible = "arm,pl011", "arm,primecell";
+		};
+
+		kmi@18000000 {
+			compatible = "arm,pl050", "arm,primecell";
+		};
+
+		kmi@19000000 {
+			compatible = "arm,pl050", "arm,primecell";
+		};
+
+		/*
+		 * These PrimeCells are only available on the Integrator/CP
+		 */
+		mmc@1c000000 {
+			compatible = "arm,pl180", "arm,primecell";
+			reg = <0x1c000000 0x1000>;
+			interrupts = <23 24>;
+			max-frequency = <515633>;
+		};
+
+		aaci@1d000000 {
+			compatible = "arm,pl041", "arm,primecell";
+			reg = <0x1d000000 0x1000>;
+			interrupts = <25>;
+		};
+
+		clcd@c0000000 {
+			compatible = "arm,pl110", "arm,primecell";
+			reg = <0xC0000000 0x1000>;
+			interrupts = <22>;
+		};
+	};
+};

arch/arm/include/asm/Kbuild

···
 generic-y += auxvec.h
 generic-y += bitsperlong.h
 generic-y += cputime.h
+generic-y += current.h
 generic-y += emergency-restart.h
 generic-y += errno.h
+generic-y += exec.h
 generic-y += ioctl.h
+generic-y += ipcbuf.h
 generic-y += irq_regs.h
 generic-y += kdebug.h
 generic-y += local.h
 generic-y += local64.h
+generic-y += msgbuf.h
+generic-y += param.h
+generic-y += parport.h
 generic-y += percpu.h
 generic-y += poll.h
 generic-y += resource.h
 generic-y += sections.h
+generic-y += segment.h
+generic-y += sembuf.h
+generic-y += serial.h
+generic-y += shmbuf.h
 generic-y += siginfo.h
 generic-y += sizes.h
+generic-y += socket.h
+generic-y += sockios.h
+generic-y += termbits.h
+generic-y += termios.h
+generic-y += timex.h
+generic-y += types.h
+generic-y += unaligned.h

arch/arm/include/asm/arch_timer.h

···
 #define __ASMARM_ARCH_TIMER_H
 
 #include <asm/errno.h>
+#include <linux/clocksource.h>
 
 #ifdef CONFIG_ARM_ARCH_TIMER
-#define ARCH_HAS_READ_CURRENT_TIMER
 int arch_timer_of_register(void);
 int arch_timer_sched_clock_init(void);
+struct timecounter *arch_timer_get_timecounter(void);
 #else
 static inline int arch_timer_of_register(void)
 {
···
 static inline int arch_timer_sched_clock_init(void)
 {
 	return -ENXIO;
+}
+
+static inline struct timecounter *arch_timer_get_timecounter(void)
+{
+	return NULL;
 }
 #endif
 

arch/arm/include/asm/current.h

···
-#ifndef _ASMARM_CURRENT_H
-#define _ASMARM_CURRENT_H
-
-#include <linux/thread_info.h>
-
-static inline struct task_struct *get_current(void) __attribute_const__;
-
-static inline struct task_struct *get_current(void)
-{
-	return current_thread_info()->task;
-}
-
-#define current (get_current())
-
-#endif /* _ASMARM_CURRENT_H */

arch/arm/include/asm/delay.h

···
 
 #ifndef __ASSEMBLY__
 
+struct delay_timer {
+	unsigned long (*read_current_timer)(void);
+	unsigned long freq;
+};
+
 extern struct arm_delay_ops {
 	void (*delay)(unsigned long);
 	void (*const_udelay)(unsigned long);
···
 extern void __loop_delay(unsigned long loops);
 extern void __loop_udelay(unsigned long usecs);
 extern void __loop_const_udelay(unsigned long);
+
+/* Delay-loop timer registration. */
+#define ARCH_HAS_READ_CURRENT_TIMER
+extern void register_current_timer_delay(const struct delay_timer *timer);
 
 #endif /* __ASSEMBLY__ */
 

arch/arm/include/asm/exec.h

···
-#ifndef __ASM_ARM_EXEC_H
-#define __ASM_ARM_EXEC_H
-
-#define arch_align_stack(x) (x)
-
-#endif /* __ASM_ARM_EXEC_H */

arch/arm/include/asm/glue-cache.h

···
 #endif
 
 #if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
-//# ifdef _CACHE
+# ifdef _CACHE
 #  define MULTI_CACHE 1
-//# else
-//#  define _CACHE v6
-//# endif
+# else
+#  define _CACHE v6
+# endif
 #endif
 
 #if defined(CONFIG_CPU_V7)
-//# ifdef _CACHE
+# ifdef _CACHE
 #  define MULTI_CACHE 1
-//# else
-//#  define _CACHE v7
-//# endif
+# else
+#  define _CACHE v7
+# endif
 #endif
 
 #if !defined(_CACHE) && !defined(MULTI_CACHE)

arch/arm/include/asm/hardirq.h

···
 #include <linux/threads.h>
 #include <asm/irq.h>
 
-#define NR_IPI	5
+#define NR_IPI	6
 
 typedef struct {
 	unsigned int __softirq_pending;

arch/arm/include/asm/hardware/linkup-l1110.h

···
-/*
-*
-* Definitions for H3600 Handheld Computer
-*
-* Copyright 2001 Compaq Computer Corporation.
-*
-* Use consistent with the GNU GPL is permitted,
-* provided that this copyright notice is
-* preserved in its entirety in all copies and derived works.
-*
-* COMPAQ COMPUTER CORPORATION MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
-* AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
-* FITNESS FOR ANY PARTICULAR PURPOSE.
-*
-* Author: Jamey Hicks.
-*
-*/
-
-/* LinkUp Systems PCCard/CompactFlash Interface for SA-1100 */
-
-/* PC Card Status Register */
-#define LINKUP_PRS_S1	(1 << 0) /* voltage control bits S1-S4 */
-#define LINKUP_PRS_S2	(1 << 1)
-#define LINKUP_PRS_S3	(1 << 2)
-#define LINKUP_PRS_S4	(1 << 3)
-#define LINKUP_PRS_BVD1	(1 << 4)
-#define LINKUP_PRS_BVD2	(1 << 5)
-#define LINKUP_PRS_VS1	(1 << 6)
-#define LINKUP_PRS_VS2	(1 << 7)
-#define LINKUP_PRS_RDY	(1 << 8)
-#define LINKUP_PRS_CD1	(1 << 9)
-#define LINKUP_PRS_CD2	(1 << 10)
-
-/* PC Card Command Register */
-#define LINKUP_PRC_S1	(1 << 0)
-#define LINKUP_PRC_S2	(1 << 1)
-#define LINKUP_PRC_S3	(1 << 2)
-#define LINKUP_PRC_S4	(1 << 3)
-#define LINKUP_PRC_RESET (1 << 4)
-#define LINKUP_PRC_APOE	(1 << 5) /* Auto Power Off Enable: clears S1-S4 when either nCD goes high */
-#define LINKUP_PRC_CFE	(1 << 6) /* CompactFlash mode Enable: addresses A[10:0] only, A[25:11] high */
-#define LINKUP_PRC_SOE	(1 << 7) /* signal output driver enable */
-#define LINKUP_PRC_SSP	(1 << 8) /* sock select polarity: 0 for socket 0, 1 for socket 1 */
-#define LINKUP_PRC_MBZ	(1 << 15) /* must be zero */
-
-struct linkup_l1110 {
-	volatile short prc;
-};

arch/arm/include/asm/io.h

···
 extern void __raw_readsw(const void __iomem *addr, void *data, int wordlen);
 extern void __raw_readsl(const void __iomem *addr, void *data, int longlen);
 
-#define __raw_writeb(v,a)	((void)(__chk_io_ptr(a), *(volatile unsigned char __force  *)(a) = (v)))
-#define __raw_writew(v,a)	((void)(__chk_io_ptr(a), *(volatile unsigned short __force *)(a) = (v)))
-#define __raw_writel(v,a)	((void)(__chk_io_ptr(a), *(volatile unsigned int __force   *)(a) = (v)))
+#if __LINUX_ARM_ARCH__ < 6
+/*
+ * Half-word accesses are problematic with RiscPC due to limitations of
+ * the bus. Rather than special-case the machine, just let the compiler
+ * generate the access for CPUs prior to ARMv6.
+ */
+#define __raw_readw(a)         (__chk_io_ptr(a), *(volatile unsigned short __force *)(a))
+#define __raw_writew(v,a)      ((void)(__chk_io_ptr(a), *(volatile unsigned short __force *)(a) = (v)))
+#else
+/*
+ * When running under a hypervisor, we want to avoid I/O accesses with
+ * writeback addressing modes as these incur a significant performance
+ * overhead (the address generation must be emulated in software).
+ */
+static inline void __raw_writew(u16 val, volatile void __iomem *addr)
+{
+	asm volatile("strh %1, %0"
+		     : "+Qo" (*(volatile u16 __force *)addr)
+		     : "r" (val));
+}
 
-#define __raw_readb(a)		(__chk_io_ptr(a), *(volatile unsigned char __force  *)(a))
-#define __raw_readw(a)		(__chk_io_ptr(a), *(volatile unsigned short __force *)(a))
-#define __raw_readl(a)		(__chk_io_ptr(a), *(volatile unsigned int __force   *)(a))
+static inline u16 __raw_readw(const volatile void __iomem *addr)
+{
+	u16 val;
+	asm volatile("ldrh %1, %0"
+		     : "+Qo" (*(volatile u16 __force *)addr),
+		       "=r" (val));
+	return val;
+}
+#endif
+
+static inline void __raw_writeb(u8 val, volatile void __iomem *addr)
+{
+	asm volatile("strb %1, %0"
+		     : "+Qo" (*(volatile u8 __force *)addr)
+		     : "r" (val));
+}
+
+static inline void __raw_writel(u32 val, volatile void __iomem *addr)
+{
+	asm volatile("str %1, %0"
+		     : "+Qo" (*(volatile u32 __force *)addr)
+		     : "r" (val));
+}
+
+static inline u8 __raw_readb(const volatile void __iomem *addr)
+{
+	u8 val;
+	asm volatile("ldrb %1, %0"
+		     : "+Qo" (*(volatile u8 __force *)addr),
+		       "=r" (val));
+	return val;
+}
+
+static inline u32 __raw_readl(const volatile void __iomem *addr)
+{
+	u32 val;
+	asm volatile("ldr %1, %0"
+		     : "+Qo" (*(volatile u32 __force *)addr),
+		       "=r" (val));
+	return val;
+}
 
 /*
  * Architecture ioremap implementation.

arch/arm/include/asm/ipcbuf.h

···
-#include <asm-generic/ipcbuf.h>

arch/arm/include/asm/msgbuf.h

···
-#ifndef _ASMARM_MSGBUF_H
-#define _ASMARM_MSGBUF_H
-
-/* 
- * The msqid64_ds structure for arm architecture.
- * Note extra padding because this structure is passed back and forth
- * between kernel and user space.
- *
- * Pad space is left for:
- * - 64-bit time_t to solve y2038 problem
- * - 2 miscellaneous 32-bit values
- */
-
-struct msqid64_ds {
-	struct ipc64_perm msg_perm;
-	__kernel_time_t msg_stime;	/* last msgsnd time */
-	unsigned long	__unused1;
-	__kernel_time_t msg_rtime;	/* last msgrcv time */
-	unsigned long	__unused2;
-	__kernel_time_t msg_ctime;	/* last change time */
-	unsigned long	__unused3;
-	unsigned long  msg_cbytes;	/* current number of bytes on queue */
-	unsigned long  msg_qnum;	/* number of messages in queue */
-	unsigned long  msg_qbytes;	/* max number of bytes on queue */
-	__kernel_pid_t msg_lspid;	/* pid of last msgsnd */
-	__kernel_pid_t msg_lrpid;	/* last receive pid */
-	unsigned long  __unused4;
-	unsigned long  __unused5;
-};
-
-#endif /* _ASMARM_MSGBUF_H */

arch/arm/include/asm/mutex.h

···
 #define _ASM_MUTEX_H
 /*
  * On pre-ARMv6 hardware this results in a swp-based implementation,
- * which is the most efficient. For ARMv6+, we emit a pair of exclusive
- * accesses instead.
+ * which is the most efficient. For ARMv6+, we have exclusive memory
+ * accessors and use atomic_dec to avoid the extra xchg operations
+ * on the locking slowpaths.
  */
+#if __LINUX_ARM_ARCH__ < 6
 #include <asm-generic/mutex-xchg.h>
+#else
+#include <asm-generic/mutex-dec.h>
 #endif
+#endif	/* _ASM_MUTEX_H */

arch/arm/include/asm/opcodes-virt.h

···
+/*
+ * opcodes-virt.h: Opcode definitions for the ARM virtualization extensions
+ * Copyright (C) 2012  Linaro Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef __ASM_ARM_OPCODES_VIRT_H
+#define __ASM_ARM_OPCODES_VIRT_H
+
+#include <asm/opcodes.h>
+
+#define __HVC(imm16) __inst_arm_thumb32(				\
+	0xE1400070 | (((imm16) & 0xFFF0) << 4) | ((imm16) & 0x000F),	\
+	0xF7E08000 | (((imm16) & 0xF000) << 4) | ((imm16) & 0x0FFF)	\
+)
+
+#endif /* ! __ASM_ARM_OPCODES_VIRT_H */

arch/arm/include/asm/opcodes.h

···
 
 
 /*
+ * Assembler opcode byteswap helpers.
+ * These are only intended for use by this header: don't use them directly,
+ * because they will be suboptimal in most cases.
+ */
+#define ___asm_opcode_swab32(x) (	\
+	  (((x) << 24) & 0xFF000000)	\
+	| (((x) <<  8) & 0x00FF0000)	\
+	| (((x) >>  8) & 0x0000FF00)	\
+	| (((x) >> 24) & 0x000000FF)	\
+)
+#define ___asm_opcode_swab16(x) (	\
+	  (((x) << 8) & 0xFF00)		\
+	| (((x) >> 8) & 0x00FF)		\
+)
+#define ___asm_opcode_swahb32(x) (	\
+	  (((x) << 8) & 0xFF00FF00)	\
+	| (((x) >> 8) & 0x00FF00FF)	\
+)
+#define ___asm_opcode_swahw32(x) (	\
+	  (((x) << 16) & 0xFFFF0000)	\
+	| (((x) >> 16) & 0x0000FFFF)	\
+)
+#define ___asm_opcode_identity32(x) ((x) & 0xFFFFFFFF)
+#define ___asm_opcode_identity16(x) ((x) & 0xFFFF)
+
+
+/*
  * Opcode byteswap helpers
  *
  * These macros help with converting instructions between a canonical integer
···
  * Note that values in the range 0x0000E800..0xE7FFFFFF intentionally do not
  * represent any valid Thumb-2 instruction.  For this range,
  * __opcode_is_thumb32() and __opcode_is_thumb16() will both be false.
+ *
+ * The ___asm variants are intended only for use by this header, in situations
+ * involving inline assembler.  For .S files, the normal __opcode_*() macros
+ * should do the right thing.
  */
+#ifdef __ASSEMBLY__
 
-#ifndef __ASSEMBLY__
+#define ___opcode_swab32(x) ___asm_opcode_swab32(x)
+#define ___opcode_swab16(x) ___asm_opcode_swab16(x)
+#define ___opcode_swahb32(x) ___asm_opcode_swahb32(x)
+#define ___opcode_swahw32(x) ___asm_opcode_swahw32(x)
+#define ___opcode_identity32(x) ___asm_opcode_identity32(x)
+#define ___opcode_identity16(x) ___asm_opcode_identity16(x)
+
+#else /* ! __ASSEMBLY__ */
 
 #include <linux/types.h>
 #include <linux/swab.h>
 
+#define ___opcode_swab32(x) swab32(x)
+#define ___opcode_swab16(x) swab16(x)
+#define ___opcode_swahb32(x) swahb32(x)
+#define ___opcode_swahw32(x) swahw32(x)
+#define ___opcode_identity32(x) ((u32)(x))
+#define ___opcode_identity16(x) ((u16)(x))
+
+#endif /* ! __ASSEMBLY__ */
+
+
 #ifdef CONFIG_CPU_ENDIAN_BE8
-#define __opcode_to_mem_arm(x) swab32(x)
-#define __opcode_to_mem_thumb16(x) swab16(x)
-#define __opcode_to_mem_thumb32(x) swahb32(x)
-#else
-#define __opcode_to_mem_arm(x) ((u32)(x))
-#define __opcode_to_mem_thumb16(x) ((u16)(x))
-#define __opcode_to_mem_thumb32(x) swahw32(x)
+
+#define __opcode_to_mem_arm(x) ___opcode_swab32(x)
+#define __opcode_to_mem_thumb16(x) ___opcode_swab16(x)
+#define __opcode_to_mem_thumb32(x) ___opcode_swahb32(x)
+#define ___asm_opcode_to_mem_arm(x) ___asm_opcode_swab32(x)
+#define ___asm_opcode_to_mem_thumb16(x) ___asm_opcode_swab16(x)
+#define ___asm_opcode_to_mem_thumb32(x) ___asm_opcode_swahb32(x)
+
+#else /* ! CONFIG_CPU_ENDIAN_BE8 */
+
+#define __opcode_to_mem_arm(x) ___opcode_identity32(x)
+#define __opcode_to_mem_thumb16(x) ___opcode_identity16(x)
+#define ___asm_opcode_to_mem_arm(x) ___asm_opcode_identity32(x)
+#define ___asm_opcode_to_mem_thumb16(x) ___asm_opcode_identity16(x)
+#ifndef CONFIG_CPU_ENDIAN_BE32
+/*
+ * On BE32 systems, using 32-bit accesses to store Thumb instructions will not
+ * work in all cases, due to alignment constraints.  For now, a correct
+ * version is not provided for BE32.
+ */
+#define __opcode_to_mem_thumb32(x) ___opcode_swahw32(x)
+#define ___asm_opcode_to_mem_thumb32(x) ___asm_opcode_swahw32(x)
 #endif
+
+#endif /* ! CONFIG_CPU_ENDIAN_BE8 */
 
 #define __mem_to_opcode_arm(x) __opcode_to_mem_arm(x)
 #define __mem_to_opcode_thumb16(x) __opcode_to_mem_thumb16(x)
+#ifndef CONFIG_CPU_ENDIAN_BE32
 #define __mem_to_opcode_thumb32(x) __opcode_to_mem_thumb32(x)
+#endif
 
 /* Operations specific to Thumb opcodes */
 
 /* Instruction size checks: */
-#define __opcode_is_thumb32(x) ((u32)(x) >= 0xE8000000UL)
-#define __opcode_is_thumb16(x) ((u32)(x) < 0xE800UL)
+#define __opcode_is_thumb32(x) (		\
+	   ((x) & 0xF8000000) == 0xE8000000	\
+	|| ((x) & 0xF0000000) == 0xF0000000	\
+)
+#define __opcode_is_thumb16(x) (					\
+	   ((x) & 0xFFFF0000) == 0					\
+	&& !(((x) & 0xF800) == 0xE800 || ((x) & 0xF000) == 0xF000)	\
+)
 
 /* Operations to construct or split 32-bit Thumb instructions: */
-#define __opcode_thumb32_first(x) ((u16)((x) >> 16))
-#define __opcode_thumb32_second(x) ((u16)(x))
-#define __opcode_thumb32_compose(first, second) \
-	(((u32)(u16)(first) << 16) | (u32)(u16)(second))
+#define __opcode_thumb32_first(x) (___opcode_identity16((x) >> 16))
+#define __opcode_thumb32_second(x) (___opcode_identity16(x))
+#define __opcode_thumb32_compose(first, second) (			\
+	  (___opcode_identity32(___opcode_identity16(first)) << 16)	\
+	| ___opcode_identity32(___opcode_identity16(second))		\
+)
+#define ___asm_opcode_thumb32_first(x) (___asm_opcode_identity16((x) >> 16))
+#define ___asm_opcode_thumb32_second(x) (___asm_opcode_identity16(x))
+#define ___asm_opcode_thumb32_compose(first, second) (			    \
+	  (___asm_opcode_identity32(___asm_opcode_identity16(first)) << 16) \
+	| ___asm_opcode_identity32(___asm_opcode_identity16(second))	    \
+)
 
-#endif /* __ASSEMBLY__ */
+/*
+ * Opcode injection helpers
+ *
+ * In rare cases it is necessary to assemble an opcode which the
+ * assembler does not support directly, or which would normally be
+ * rejected because of the CFLAGS or AFLAGS used to build the affected
+ * file.
+ *
+ * Before using these macros, consider carefully whether it is feasible
+ * instead to change the build flags for your file, or whether it really
+ * makes sense to support old assembler versions when building that
+ * particular kernel feature.
+ *
+ * The macros defined here should only be used where there is no viable
+ * alternative.
+ *
+ *
+ * __inst_arm(x): emit the specified ARM opcode
+ * __inst_thumb16(x): emit the specified 16-bit Thumb opcode
+ * __inst_thumb32(x): emit the specified 32-bit Thumb opcode
+ *
+ * __inst_arm_thumb16(arm, thumb): emit either the specified arm or
+ *	16-bit Thumb opcode, depending on whether an ARM or Thumb-2
+ *	kernel is being built
+ *
+ * __inst_arm_thumb32(arm, thumb): emit either the specified arm or
+ *	32-bit Thumb opcode, depending on whether an ARM or Thumb-2
+ *	kernel is being built
+ *
+ *
+ * Note that using these macros directly is poor practice.  Instead, you
+ * should use them to define human-readable wrapper macros to encode the
+ * instructions that you care about.  In code which might run on ARMv7 or
+ * above, you can usually use the __inst_arm_thumb{16,32} macros to
+ * specify the ARM and Thumb alternatives at the same time.  This ensures
+ * that the correct opcode gets emitted depending on the instruction set
+ * used for the kernel build.
+ *
+ * Look at opcodes-virt.h for an example of how to use these macros.
+ */
+#include <linux/stringify.h>
+
+#define __inst_arm(x) ___inst_arm(___asm_opcode_to_mem_arm(x))
+#define __inst_thumb32(x) ___inst_thumb32(				\
+	___asm_opcode_to_mem_thumb16(___asm_opcode_thumb32_first(x)),	\
+	___asm_opcode_to_mem_thumb16(___asm_opcode_thumb32_second(x))	\
+)
+#define __inst_thumb16(x) ___inst_thumb16(___asm_opcode_to_mem_thumb16(x))
+
+#ifdef CONFIG_THUMB2_KERNEL
+#define __inst_arm_thumb16(arm_opcode, thumb_opcode) \
+	__inst_thumb16(thumb_opcode)
+#define __inst_arm_thumb32(arm_opcode, thumb_opcode) \
+	__inst_thumb32(thumb_opcode)
+#else
+#define __inst_arm_thumb16(arm_opcode, thumb_opcode) __inst_arm(arm_opcode)
+#define __inst_arm_thumb32(arm_opcode, thumb_opcode) __inst_arm(arm_opcode)
+#endif
+
+/* Helpers for the helpers.  Don't use these directly. */
+#ifdef __ASSEMBLY__
+#define ___inst_arm(x) .long x
+#define ___inst_thumb16(x) .short x
+#define ___inst_thumb32(first, second) .short first, second
+#else
+#define ___inst_arm(x) ".long " __stringify(x) "\n\t"
+#define ___inst_thumb16(x) ".short " __stringify(x) "\n\t"
+#define ___inst_thumb32(first, second) \
+	".short " __stringify(first) ", " __stringify(second) "\n\t"
+#endif
 
 #endif /* __ASM_ARM_OPCODES_H */

arch/arm/include/asm/param.h

···
-/*
- *  arch/arm/include/asm/param.h
- *
- *  Copyright (C) 1995-1999 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.
- */
-#ifndef __ASM_PARAM_H
-#define __ASM_PARAM_H
-
-#ifdef __KERNEL__
-# define HZ		CONFIG_HZ	/* Internal kernel timer frequency */
-# define USER_HZ	100		/* User interfaces are in "ticks" */
-# define CLOCKS_PER_SEC	(USER_HZ)	/* like times() */
-#else
-# define HZ		100
-#endif
-
-#define EXEC_PAGESIZE	4096
-
-#ifndef NOGROUP
-#define NOGROUP         (-1)
-#endif
-
-/* max length of hostname */
-#define MAXHOSTNAMELEN  64
-
-#endif
-

arch/arm/include/asm/parport.h

···
-/*
- *  arch/arm/include/asm/parport.h: ARM-specific parport initialisation
- *
- *  Copyright (C) 1999, 2000  Tim Waugh <[e-mail]>
- *
- * This file should only be included by drivers/parport/parport_pc.c.
- */
-
-#ifndef __ASMARM_PARPORT_H
-#define __ASMARM_PARPORT_H
-
-static int __devinit parport_pc_find_isa_ports (int autoirq, int autodma);
-static int __devinit parport_pc_find_nonpci_ports (int autoirq, int autodma)
-{
-	return parport_pc_find_isa_ports (autoirq, autodma);
-}
-
-#endif /* !(_ASMARM_PARPORT_H) */

arch/arm/include/asm/segment.h

···
-#ifndef __ASM_ARM_SEGMENT_H
-#define __ASM_ARM_SEGMENT_H
-
-#define __KERNEL_CS   0x0
-#define __KERNEL_DS   0x0
-
-#define __USER_CS     0x1
-#define __USER_DS     0x1
-
-#endif /* __ASM_ARM_SEGMENT_H */
-

arch/arm/include/asm/sembuf.h

···
-#ifndef _ASMARM_SEMBUF_H
-#define _ASMARM_SEMBUF_H
-
-/* 
- * The semid64_ds structure for arm architecture.
- * Note extra padding because this structure is passed back and forth
- * between kernel and user space.
- *
- * Pad space is left for:
- * - 64-bit time_t to solve y2038 problem
- * - 2 miscellaneous 32-bit values
- */
-
-struct semid64_ds {
-	struct ipc64_perm sem_perm;		/* permissions .. see ipc.h */
-	__kernel_time_t	sem_otime;		/* last semop time */
-	unsigned long	__unused1;
-	__kernel_time_t	sem_ctime;		/* last change time */
-	unsigned long	__unused2;
-	unsigned long	sem_nsems;		/* no. of semaphores in array */
-	unsigned long	__unused3;
-	unsigned long	__unused4;
-};
-
-#endif /* _ASMARM_SEMBUF_H */

arch/arm/include/asm/serial.h

···
-/*
- *  arch/arm/include/asm/serial.h
- *
- *  Copyright (C) 1996 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.
- *
- *  Changelog:
- *   15-10-1996	RMK	Created
- */
-
-#ifndef __ASM_SERIAL_H
-#define __ASM_SERIAL_H
-
-#define BASE_BAUD	(1843200 / 16)
-
-#endif

arch/arm/include/asm/shmbuf.h

···
-#ifndef _ASMARM_SHMBUF_H
-#define _ASMARM_SHMBUF_H
-
-/* 
- * The shmid64_ds structure for arm architecture.
- * Note extra padding because this structure is passed back and forth
- * between kernel and user space.
- *
- * Pad space is left for:
- * - 64-bit time_t to solve y2038 problem
- * - 2 miscellaneous 32-bit values
- */
-
-struct shmid64_ds {
-	struct ipc64_perm	shm_perm;	/* operation perms */
-	size_t			shm_segsz;	/* size of segment (bytes) */
-	__kernel_time_t		shm_atime;	/* last attach time */
-	unsigned long		__unused1;
-	__kernel_time_t		shm_dtime;	/* last detach time */
-	unsigned long		__unused2;
-	__kernel_time_t		shm_ctime;	/* last change time */
-	unsigned long		__unused3;
-	__kernel_pid_t		shm_cpid;	/* pid of creator */
-	__kernel_pid_t		shm_lpid;	/* pid of last operator */
-	unsigned long		shm_nattch;	/* no. of current attaches */
-	unsigned long		__unused4;
-	unsigned long		__unused5;
-};
-
-struct shminfo64 {
-	unsigned long	shmmax;
-	unsigned long	shmmin;
-	unsigned long	shmmni;
-	unsigned long	shmseg;
-	unsigned long	shmall;
-	unsigned long	__unused1;
-	unsigned long	__unused2;
-	unsigned long	__unused3;
-	unsigned long	__unused4;
-};
-
-#endif /* _ASMARM_SHMBUF_H */

arch/arm/include/asm/socket.h

···
-#ifndef _ASMARM_SOCKET_H
-#define _ASMARM_SOCKET_H
-
-#include <asm/sockios.h>
-
-/* For setsockopt(2) */
-#define SOL_SOCKET	1
-
-#define SO_DEBUG	1
-#define SO_REUSEADDR	2
-#define SO_TYPE		3
-#define SO_ERROR	4
-#define SO_DONTROUTE	5
-#define SO_BROADCAST	6
-#define SO_SNDBUF	7
-#define SO_RCVBUF	8
-#define SO_SNDBUFFORCE	32
-#define SO_RCVBUFFORCE	33
-#define SO_KEEPALIVE	9
-#define SO_OOBINLINE	10
-#define SO_NO_CHECK	11
-#define SO_PRIORITY	12
-#define SO_LINGER	13
-#define SO_BSDCOMPAT	14
-/* To add :#define SO_REUSEPORT 15 */
-#define SO_PASSCRED	16
-#define SO_PEERCRED	17
-#define SO_RCVLOWAT	18
-#define SO_SNDLOWAT	19
-#define SO_RCVTIMEO	20
-#define SO_SNDTIMEO	21
-
-/* Security levels - as per NRL IPv6 - don't actually do anything */
-#define SO_SECURITY_AUTHENTICATION		22
-#define SO_SECURITY_ENCRYPTION_TRANSPORT	23
-#define SO_SECURITY_ENCRYPTION_NETWORK		24
-
-#define SO_BINDTODEVICE 25
-
-/* Socket filtering */
-#define SO_ATTACH_FILTER        26
-#define SO_DETACH_FILTER        27
-
-#define SO_PEERNAME             28
-#define SO_TIMESTAMP		29
-#define SCM_TIMESTAMP		SO_TIMESTAMP
-
-#define SO_ACCEPTCONN		30
-
-#define SO_PEERSEC		31
-#define SO_PASSSEC		34
-#define SO_TIMESTAMPNS		35
-#define SCM_TIMESTAMPNS		SO_TIMESTAMPNS
-
-#define SO_MARK			36
-
-#define SO_TIMESTAMPING		37
-#define SCM_TIMESTAMPING	SO_TIMESTAMPING
-
-#define SO_PROTOCOL		38
-#define SO_DOMAIN		39
-
-#define SO_RXQ_OVFL             40
-
-#define SO_WIFI_STATUS		41
-#define SCM_WIFI_STATUS		SO_WIFI_STATUS
-#define SO_PEEK_OFF		42
-
-/* Instruct lower device to use last 4-bytes of skb data as FCS */
-#define SO_NOFCS		43
-
-#endif /* _ASM_SOCKET_H */

arch/arm/include/asm/sockios.h

···
-#ifndef __ARCH_ARM_SOCKIOS_H
-#define __ARCH_ARM_SOCKIOS_H
-
-/* Socket-level I/O control calls. */
-#define FIOSETOWN 	0x8901
-#define SIOCSPGRP	0x8902
-#define FIOGETOWN	0x8903
-#define SIOCGPGRP	0x8904
-#define SIOCATMARK	0x8905
-#define SIOCGSTAMP	0x8906		/* Get stamp (timeval) */
-#define SIOCGSTAMPNS	0x8907		/* Get stamp (timespec) */
-
-#endif

arch/arm/include/asm/syscall.h

···
 #define _ASM_ARM_SYSCALL_H
 
 #include <linux/err.h>
+#include <linux/sched.h>
+
+#include <asm/unistd.h>
+
+#define NR_syscalls (__NR_syscalls)
 
 extern const unsigned long sys_call_table[];
 

arch/arm/include/asm/termbits.h

···
-#ifndef __ASM_ARM_TERMBITS_H
-#define __ASM_ARM_TERMBITS_H
-
-typedef unsigned char	cc_t;
-typedef unsigned int	speed_t;
-typedef unsigned int	tcflag_t;
-
-#define NCCS 19
-struct termios {
-	tcflag_t c_iflag;		/* input mode flags */
-	tcflag_t c_oflag;		/* output mode flags */
-	tcflag_t c_cflag;		/* control mode flags */
-	tcflag_t c_lflag;		/* local mode flags */
-	cc_t c_line;			/* line discipline */
-	cc_t c_cc[NCCS];		/* control characters */
-};
-
-struct termios2 {
-	tcflag_t c_iflag;		/* input mode flags */
-	tcflag_t c_oflag;		/* output mode flags */
-	tcflag_t c_cflag;		/* control mode flags */
-	tcflag_t c_lflag;		/* local mode flags */
-	cc_t c_line;			/* line discipline */
-	cc_t c_cc[NCCS];		/* control characters */
-	speed_t c_ispeed;		/* input speed */
-	speed_t c_ospeed;		/* output speed */
-};
-
-struct ktermios {
-	tcflag_t c_iflag;		/* input mode flags */
-	tcflag_t c_oflag;		/* output mode flags */
-	tcflag_t c_cflag;		/* control mode flags */
-	tcflag_t c_lflag;		/* local mode flags */
-	cc_t c_line;			/* line discipline */
-	cc_t c_cc[NCCS];		/* control characters */
-	speed_t c_ispeed;		/* input speed */
-	speed_t c_ospeed;		/* output speed */
-};
-
-
-/* c_cc characters */
-#define VINTR 0
-#define VQUIT 1
-#define VERASE 2
-#define VKILL 3
-#define VEOF 4
-#define VTIME 5
-#define VMIN 6
-#define VSWTC 7
-#define VSTART 8
-#define VSTOP 9
-#define VSUSP 10
-#define VEOL 11
-#define VREPRINT 12
-#define VDISCARD 13
-#define VWERASE 14
-#define VLNEXT 15
-#define VEOL2 16
-
-/* c_iflag bits */
-#define IGNBRK	0000001
-#define BRKINT	0000002
-#define IGNPAR	0000004
-#define PARMRK	0000010
-#define INPCK	0000020
-#define ISTRIP	0000040
-#define INLCR	0000100
-#define IGNCR	0000200
-#define ICRNL	0000400
-#define IUCLC	0001000
-#define IXON	0002000
-#define IXANY	0004000
-#define IXOFF	0010000
-#define IMAXBEL	0020000
-#define IUTF8	0040000
-
-/* c_oflag bits */
-#define OPOST	0000001
-#define OLCUC	0000002
-#define ONLCR	0000004
-#define OCRNL	0000010
-#define ONOCR	0000020
-#define ONLRET	0000040
-#define OFILL	0000100
-#define OFDEL	0000200
-#define NLDLY	0000400
-#define   NL0	0000000
-#define   NL1	0000400
-#define CRDLY	0003000
-#define   CR0	0000000
-#define   CR1	0001000
-#define   CR2	0002000
-#define   CR3	0003000
-#define TABDLY	0014000
-#define   TAB0	0000000
-#define   TAB1	0004000
-#define   TAB2	0010000
-#define   TAB3	0014000
-#define   XTABS	0014000
-#define BSDLY	0020000
-#define   BS0	0000000
-#define   BS1	0020000
-#define VTDLY	0040000
-#define   VT0	0000000
-#define   VT1	0040000
-#define FFDLY	0100000
-#define   FF0	0000000
-#define   FF1	0100000
-
-/* c_cflag bit meaning */
-#define CBAUD	0010017
-#define  B0	0000000		/* hang up */
-#define  B50	0000001
-#define  B75	0000002
-#define  B110	0000003
-#define  B134	0000004
-#define  B150	0000005
-#define  B200	0000006
-#define  B300	0000007
-#define  B600	0000010
-#define  B1200	0000011
-#define  B1800	0000012
-#define  B2400	0000013
-#define  B4800	0000014
-#define  B9600	0000015
-#define  B19200	0000016
-#define  B38400	0000017
-#define EXTA B19200
-#define EXTB B38400
-#define CSIZE	0000060
-#define   CS5	0000000
-#define   CS6	0000020
-#define   CS7	0000040
-#define   CS8	0000060
-#define CSTOPB	0000100
-#define CREAD	0000200
-#define PARENB	0000400
-#define PARODD	0001000
-#define HUPCL	0002000
-#define CLOCAL	0004000
-#define CBAUDEX 0010000
-#define    BOTHER 0010000
-#define    B57600 0010001
-#define   B115200 0010002
-#define   B230400 0010003
-#define   B460800 0010004
-#define   B500000 0010005
-#define   B576000 0010006
-#define   B921600 0010007
-#define  B1000000 0010010
-#define  B1152000 0010011
-#define  B1500000 0010012
-#define  B2000000 0010013
-#define  B2500000 0010014
-#define  B3000000 0010015
-#define  B3500000 0010016
-#define  B4000000 0010017
-#define CIBAUD	  002003600000		/* input baud rate */
-#define CMSPAR    010000000000		/* mark or space (stick) parity */
-#define CRTSCTS	  020000000000		/* flow control */
-
-#define IBSHIFT	   16
-
-/* c_lflag bits */
-#define ISIG	0000001
-#define ICANON	0000002
-#define XCASE	0000004
-#define ECHO	0000010
-#define ECHOE	0000020
-#define ECHOK	0000040
-#define ECHONL	0000100
-#define NOFLSH	0000200
-#define TOSTOP	0000400
-#define ECHOCTL	0001000
-#define ECHOPRT	0002000
-#define ECHOKE	0004000
-#define FLUSHO	0010000
-#define PENDIN	0040000
-#define IEXTEN	0100000
-#define EXTPROC	0200000
-
-/* tcflow() and TCXONC use these */
-#define	TCOOFF		0
-#define	TCOON		1
-#define	TCIOFF		2
-#define	TCION		3
-
-/* tcflush() and TCFLSH use these */
-#define	TCIFLUSH	0
-#define	TCOFLUSH	1
-#define	TCIOFLUSH	2
-
-/* tcsetattr uses these */
-#define	TCSANOW		0
-#define	TCSADRAIN	1
-#define	TCSAFLUSH	2
-
-#endif	/* __ASM_ARM_TERMBITS_H */

arch/arm/include/asm/termios.h

···
-#ifndef __ASM_ARM_TERMIOS_H
-#define __ASM_ARM_TERMIOS_H
-
-#include <asm/termbits.h>
-#include <asm/ioctls.h>
-
-struct winsize {
-	unsigned short ws_row;
-	unsigned short ws_col;
-	unsigned short ws_xpixel;
-	unsigned short ws_ypixel;
-};
-
-#define NCC 8
-struct termio {
-	unsigned short c_iflag;		/* input mode flags */
-	unsigned short c_oflag;		/* output mode flags */
-	unsigned short c_cflag;		/* control mode flags */
-	unsigned short c_lflag;		/* local mode flags */
-	unsigned char c_line;		/* line discipline */
-	unsigned char c_cc[NCC];	/* control characters */
-};
-
-#ifdef __KERNEL__
-/*	intr=^C		quit=^|		erase=del	kill=^U
-	eof=^D		vtime=\0	vmin=\1		sxtc=\0
-	start=^Q	stop=^S		susp=^Z		eol=\0
-	reprint=^R	discard=^U	werase=^W	lnext=^V
-	eol2=\0
-*/
-#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
-#endif
-
-/* modem lines */
-#define TIOCM_LE	0x001
-#define TIOCM_DTR	0x002
-#define TIOCM_RTS	0x004
-#define TIOCM_ST	0x008
-#define TIOCM_SR	0x010
-#define TIOCM_CTS	0x020
-#define TIOCM_CAR	0x040
-#define TIOCM_RNG	0x080
-#define TIOCM_DSR	0x100
-#define TIOCM_CD	TIOCM_CAR
-#define TIOCM_RI	TIOCM_RNG
-#define TIOCM_OUT1	0x2000
-#define TIOCM_OUT2	0x4000
-#define TIOCM_LOOP	0x8000
-
-/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
-
-#ifdef __KERNEL__
-
-/*
- * Translate a "termio" structure into a "termios". Ugh.
- */
-#define SET_LOW_TERMIOS_BITS(termios, termio, x) {		\
-	unsigned short __tmp;					\
-	get_user(__tmp,&(termio)->x);				\
-	*(unsigned short *) &(termios)->x = __tmp;		\
-}
-
-#define user_termio_to_kernel_termios(termios, termio) \
-({ \
-	SET_LOW_TERMIOS_BITS(termios, termio, c_iflag); \
-	SET_LOW_TERMIOS_BITS(termios, termio, c_oflag); \
-	SET_LOW_TERMIOS_BITS(termios, termio, c_cflag); \
-	SET_LOW_TERMIOS_BITS(termios, termio, c_lflag); \
-	copy_from_user((termios)->c_cc, (termio)->c_cc, NCC); \
-})
-
-/*
- * Translate a "termios" structure into a "termio". Ugh.
- */
-#define kernel_termios_to_user_termio(termio, termios) \
-({ \
-	put_user((termios)->c_iflag, &(termio)->c_iflag); \
-	put_user((termios)->c_oflag, &(termio)->c_oflag); \
-	put_user((termios)->c_cflag, &(termio)->c_cflag); \
-	put_user((termios)->c_lflag, &(termio)->c_lflag); \
-	put_user((termios)->c_line,  &(termio)->c_line); \
-	copy_to_user((termio)->c_cc, (termios)->c_cc, NCC); \
-})
-
-#define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios2))
-#define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios2))
-#define user_termios_to_kernel_termios_1(k, u) copy_from_user(k, u, sizeof(struct termios))
-#define kernel_termios_to_user_termios_1(u, k) copy_to_user(u, k, sizeof(struct termios))
-
-#endif	/* __KERNEL__ */
-
-#endif	/* __ASM_ARM_TERMIOS_H */

arch/arm/include/asm/thread_info.h

···
 	__u32			syscall;	/* syscall number */
 	__u8			used_cp[16];	/* thread used copro */
 	unsigned long		tp_value;
+#ifdef CONFIG_CRUNCH
 	struct crunch_state	crunchstate;
+#endif
 	union fp_state		fpstate __attribute__((aligned(8)));
 	union vfp_state		vfpstate;
 #ifdef CONFIG_ARM_THUMBEE
···
 #define TIF_NOTIFY_RESUME	2	/* callback before returning to user */
 #define TIF_SYSCALL_TRACE	8
 #define TIF_SYSCALL_AUDIT	9
+#define TIF_SYSCALL_TRACEPOINT	10
 #define TIF_POLLING_NRFLAG	16
 #define TIF_USING_IWMMXT	17
 #define TIF_MEMDIE		18	/* is terminating due to OOM killer */
···
 #define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
 #define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
 #define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
+#define _TIF_SYSCALL_TRACEPOINT	(1 << TIF_SYSCALL_TRACEPOINT)
 #define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)
 #define _TIF_USING_IWMMXT	(1 << TIF_USING_IWMMXT)
 #define _TIF_SECCOMP		(1 << TIF_SECCOMP)
 
 /* Checks for any syscall work in entry-common.S */
-#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT)
+#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SYSCALL_TRACEPOINT)
 
 /*
  * Change these and you break ASM code in entry-common.S

arch/arm/include/asm/timex.h

···
 #ifndef _ASMARM_TIMEX_H
 #define _ASMARM_TIMEX_H
 
-#include <asm/arch_timer.h>
 #ifdef CONFIG_ARCH_MULTIPLATFORM
 #define CLOCK_TICK_RATE 1000000
 #else
···
 #endif
 
 typedef unsigned long cycles_t;
-
-#ifdef ARCH_HAS_READ_CURRENT_TIMER
 #define get_cycles()	({ cycles_t c; read_current_timer(&c) ? 0 : c; })
-#else
-#define get_cycles()	(0)
-#endif
 
 #endif

arch/arm/include/asm/types.h

···
-#ifndef __ASM_ARM_TYPES_H
-#define __ASM_ARM_TYPES_H
-
-#include <asm-generic/int-ll64.h>
-
-/*
- * These aren't exported outside the kernel to avoid name space clashes
- */
-#ifdef __KERNEL__
-
-#define BITS_PER_LONG 32
-
-#endif /* __KERNEL__ */
-
-#endif
-

arch/arm/include/asm/unaligned.h

···
-#ifndef _ASM_ARM_UNALIGNED_H
-#define _ASM_ARM_UNALIGNED_H
-
-#include <linux/unaligned/le_byteshift.h>
-#include <linux/unaligned/be_byteshift.h>
-#include <linux/unaligned/generic.h>
-
-/*
- * Select endianness
- */
-#ifndef __ARMEB__
-#define get_unaligned	__get_unaligned_le
-#define put_unaligned	__put_unaligned_le
-#else
-#define get_unaligned	__get_unaligned_be
-#define put_unaligned	__put_unaligned_be
-#endif
-
-#endif /* _ASM_ARM_UNALIGNED_H */

arch/arm/include/asm/unistd.h

···
 					/* 378 for kcmp */
 
 /*
+ * This may need to be greater than __NR_last_syscall+1 in order to
+ * account for the padding in the syscall table
+ */
+#ifdef __KERNEL__
+#define __NR_syscalls  (380)
+#endif /* __KERNEL__ */
+
+/*
  * The following SWIs are ARM private.
  */
 #define __ARM_NR_BASE			(__NR_SYSCALL_BASE+0x0f0000)

arch/arm/kernel/Makefile

···
 		   process.o ptrace.o return_address.o sched_clock.o \
 		   setup.o signal.o stacktrace.o sys_arm.o time.o traps.o
 
-obj-$(CONFIG_DEPRECATED_PARAM_STRUCT) += compat.o
+obj-$(CONFIG_ATAGS)		+= atags_parse.o
+obj-$(CONFIG_ATAGS_PROC)	+= atags_proc.o
+obj-$(CONFIG_DEPRECATED_PARAM_STRUCT) += atags_compat.o
 
 obj-$(CONFIG_OC_ETM)		+= etm.o
 obj-$(CONFIG_CPU_IDLE)		+= cpuidle.o
···
 else
 test-kprobes-objs		+= kprobes-test-arm.o
 endif
-obj-$(CONFIG_ATAGS_PROC)	+= atags.o
 obj-$(CONFIG_OABI_COMPAT)	+= sys_oabi-compat.o
 obj-$(CONFIG_ARM_THUMBEE)	+= thumbee.o
 obj-$(CONFIG_KGDB)		+= kgdb.o

arch/arm/kernel/arch_timer.c

···
 #include <linux/io.h>
 
 #include <asm/cputype.h>
+#include <asm/delay.h>
 #include <asm/localtimer.h>
 #include <asm/arch_timer.h>
 #include <asm/system_info.h>
 #include <asm/sched_clock.h>
 
 static unsigned long arch_timer_rate;
-static int arch_timer_ppi;
-static int arch_timer_ppi2;
+
+enum ppi_nr {
+	PHYS_SECURE_PPI,
+	PHYS_NONSECURE_PPI,
+	VIRT_PPI,
+	HYP_PPI,
+	MAX_TIMER_PPI
+};
+
+static int arch_timer_ppi[MAX_TIMER_PPI];
 
 static struct clock_event_device __percpu **arch_timer_evt;
+static struct delay_timer arch_delay_timer;
 
-extern void init_current_timer_delay(unsigned long freq);
+static bool arch_timer_use_virtual = true;
 
 /*
  * Architected system timer support.
···
 #define ARCH_TIMER_REG_FREQ		1
 #define ARCH_TIMER_REG_TVAL		2
 
-static void arch_timer_reg_write(int reg, u32 val)
+#define ARCH_TIMER_PHYS_ACCESS		0
+#define ARCH_TIMER_VIRT_ACCESS		1
+
+/*
+ * These register accessors are marked inline so the compiler can
+ * nicely work out which register we want, and chuck away the rest of
+ * the code. At least it does so with a recent GCC (4.6.3).
+ */
+static inline void arch_timer_reg_write(const int access, const int reg, u32 val)
 {
-	switch (reg) {
-	case ARCH_TIMER_REG_CTRL:
-		asm volatile("mcr p15, 0, %0, c14, c2, 1" : : "r" (val));
-		break;
-	case ARCH_TIMER_REG_TVAL:
-		asm volatile("mcr p15, 0, %0, c14, c2, 0" : : "r" (val));
-		break;
+	if (access == ARCH_TIMER_PHYS_ACCESS) {
+		switch (reg) {
+		case ARCH_TIMER_REG_CTRL:
+			asm volatile("mcr p15, 0, %0, c14, c2, 1" : : "r" (val));
+			break;
+		case ARCH_TIMER_REG_TVAL:
+			asm volatile("mcr p15, 0, %0, c14, c2, 0" : : "r" (val));
+			break;
+		}
+	}
+
+	if (access == ARCH_TIMER_VIRT_ACCESS) {
+		switch (reg) {
+		case ARCH_TIMER_REG_CTRL:
+			asm volatile("mcr p15, 0, %0, c14, c3, 1" : : "r" (val));
+			break;
+		case ARCH_TIMER_REG_TVAL:
+			asm volatile("mcr p15, 0, %0, c14, c3, 0" : : "r" (val));
+			break;
+		}
 	}
 
 	isb();
 }
 
-static u32 arch_timer_reg_read(int reg)
+static inline u32 arch_timer_reg_read(const int access, const int reg)
 {
-	u32 val;
+	u32 val = 0;
 
-	switch (reg) {
-	case ARCH_TIMER_REG_CTRL:
-		asm volatile("mrc p15, 0, %0, c14, c2, 1" : "=r" (val));
-		break;
-	case ARCH_TIMER_REG_FREQ:
-		asm volatile("mrc p15, 0, %0, c14, c0, 0" : "=r" (val));
-		break;
-	case ARCH_TIMER_REG_TVAL:
-		asm volatile("mrc p15, 0, %0, c14, c2, 0" : "=r" (val));
-		break;
-	default:
-		BUG();
+	if (access == ARCH_TIMER_PHYS_ACCESS) {
+		switch (reg) {
+		case ARCH_TIMER_REG_CTRL:
+			asm volatile("mrc p15, 0, %0, c14, c2, 1" : "=r" (val));
+			break;
+		case ARCH_TIMER_REG_TVAL:
+			asm volatile("mrc p15, 0, %0, c14, c2, 0" : "=r" (val));
+			break;
+		case ARCH_TIMER_REG_FREQ:
+			asm volatile("mrc p15, 0, %0, c14, c0, 0" : "=r" (val));
+			break;
+		}
+	}
+
+	if (access == ARCH_TIMER_VIRT_ACCESS) {
+		switch (reg) {
+		case ARCH_TIMER_REG_CTRL:
+			asm volatile("mrc p15, 0, %0, c14, c3, 1" : "=r" (val));
+			break;
+		case ARCH_TIMER_REG_TVAL:
+			asm volatile("mrc p15, 0, %0, c14, c3, 0" : "=r" (val));
+			break;
+		}
 	}
 
 	return val;
 }
 
-static irqreturn_t arch_timer_handler(int irq, void *dev_id)
+static inline cycle_t arch_timer_counter_read(const int access)
 {
-	struct clock_event_device *evt = *(struct clock_event_device **)dev_id;
-	unsigned long ctrl;
+	cycle_t cval = 0;
 
-	ctrl = arch_timer_reg_read(ARCH_TIMER_REG_CTRL);
+	if (access == ARCH_TIMER_PHYS_ACCESS)
+		asm volatile("mrrc p15, 0, %Q0, %R0, c14" : "=r" (cval));
+
+	if (access == ARCH_TIMER_VIRT_ACCESS)
+		asm volatile("mrrc p15, 1, %Q0, %R0, c14" : "=r" (cval));
+
+	return cval;
+}
+
+static inline cycle_t arch_counter_get_cntpct(void)
+{
+	return arch_timer_counter_read(ARCH_TIMER_PHYS_ACCESS);
+}
+
+static inline cycle_t arch_counter_get_cntvct(void)
+{
+	return arch_timer_counter_read(ARCH_TIMER_VIRT_ACCESS);
+}
+
+static irqreturn_t inline timer_handler(const int access,
+					struct clock_event_device *evt)
+{
+	unsigned long ctrl;
+	ctrl = arch_timer_reg_read(access, ARCH_TIMER_REG_CTRL);
 	if (ctrl & ARCH_TIMER_CTRL_IT_STAT) {
 		ctrl |= ARCH_TIMER_CTRL_IT_MASK;
-		arch_timer_reg_write(ARCH_TIMER_REG_CTRL, ctrl);
+		arch_timer_reg_write(access, ARCH_TIMER_REG_CTRL, ctrl);
 		evt->event_handler(evt);
 		return IRQ_HANDLED;
 	}
···
 	return IRQ_NONE;
 }
 
-static void arch_timer_disable(void)
+static irqreturn_t arch_timer_handler_virt(int irq, void *dev_id)
 {
-	unsigned long ctrl;
+	struct clock_event_device *evt = *(struct clock_event_device **)dev_id;
 
-	ctrl = arch_timer_reg_read(ARCH_TIMER_REG_CTRL);
-	ctrl &= ~ARCH_TIMER_CTRL_ENABLE;
-	arch_timer_reg_write(ARCH_TIMER_REG_CTRL, ctrl);
+	return timer_handler(ARCH_TIMER_VIRT_ACCESS, evt);
 }
 
-static void arch_timer_set_mode(enum clock_event_mode mode,
-				struct clock_event_device *clk)
+static irqreturn_t arch_timer_handler_phys(int irq, void *dev_id)
 {
+	struct clock_event_device *evt = *(struct clock_event_device **)dev_id;
+
+	return timer_handler(ARCH_TIMER_PHYS_ACCESS, evt);
+}
+
+static inline void timer_set_mode(const int access, int mode)
+{
+	unsigned long ctrl;
 	switch (mode) {
 	case CLOCK_EVT_MODE_UNUSED:
 	case CLOCK_EVT_MODE_SHUTDOWN:
-		arch_timer_disable();
+		ctrl = arch_timer_reg_read(access, ARCH_TIMER_REG_CTRL);
+		ctrl &= ~ARCH_TIMER_CTRL_ENABLE;
+		arch_timer_reg_write(access, ARCH_TIMER_REG_CTRL, ctrl);
 		break;
 	default:
 		break;
 	}
 }
 
-static int arch_timer_set_next_event(unsigned long evt,
-				     struct clock_event_device *unused)
+static void arch_timer_set_mode_virt(enum clock_event_mode mode,
+				     struct clock_event_device *clk)
+{
+	timer_set_mode(ARCH_TIMER_VIRT_ACCESS, mode);
+}
+
+static void arch_timer_set_mode_phys(enum clock_event_mode mode,
+				     struct clock_event_device *clk)
+{
+	timer_set_mode(ARCH_TIMER_PHYS_ACCESS, mode);
+}
+
+static inline void set_next_event(const int access, unsigned long evt)
 {
 	unsigned long ctrl;
-
-	ctrl = arch_timer_reg_read(ARCH_TIMER_REG_CTRL);
+	ctrl = arch_timer_reg_read(access, ARCH_TIMER_REG_CTRL);
 	ctrl |= ARCH_TIMER_CTRL_ENABLE;
 	ctrl &= ~ARCH_TIMER_CTRL_IT_MASK;
+	arch_timer_reg_write(access, ARCH_TIMER_REG_TVAL, evt);
+	arch_timer_reg_write(access, ARCH_TIMER_REG_CTRL, ctrl);
+}
 
-	arch_timer_reg_write(ARCH_TIMER_REG_TVAL, evt);
-	arch_timer_reg_write(ARCH_TIMER_REG_CTRL, ctrl);
+static int arch_timer_set_next_event_virt(unsigned long evt,
+					  struct clock_event_device *unused)
+{
+	set_next_event(ARCH_TIMER_VIRT_ACCESS, evt);
+	return 0;
+}
 
+static int arch_timer_set_next_event_phys(unsigned long evt,
+					  struct clock_event_device *unused)
+{
+	set_next_event(ARCH_TIMER_PHYS_ACCESS, evt);
 	return 0;
 }
 
 static int __cpuinit arch_timer_setup(struct clock_event_device *clk)
 {
-	/* Be safe... */
-	arch_timer_disable();
-
 	clk->features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_C3STOP;
 	clk->name = "arch_sys_timer";
 	clk->rating = 450;
-	clk->set_mode = arch_timer_set_mode;
-	clk->set_next_event = arch_timer_set_next_event;
-	clk->irq = arch_timer_ppi;
+	if (arch_timer_use_virtual) {
+		clk->irq = arch_timer_ppi[VIRT_PPI];
+		clk->set_mode = arch_timer_set_mode_virt;
+		clk->set_next_event = arch_timer_set_next_event_virt;
+	} else {
+		clk->irq = arch_timer_ppi[PHYS_SECURE_PPI];
+		clk->set_mode = arch_timer_set_mode_phys;
+		clk->set_next_event = arch_timer_set_next_event_phys;
+	}
+
+	clk->set_mode(CLOCK_EVT_MODE_SHUTDOWN, NULL);
 
 	clockevents_config_and_register(clk, arch_timer_rate,
 					0xf, 0x7fffffff);
 
 	*__this_cpu_ptr(arch_timer_evt) = clk;
 
-	enable_percpu_irq(clk->irq, 0);
-	if (arch_timer_ppi2)
-		enable_percpu_irq(arch_timer_ppi2, 0);
+	if (arch_timer_use_virtual)
+		enable_percpu_irq(arch_timer_ppi[VIRT_PPI], 0);
+	else {
+		enable_percpu_irq(arch_timer_ppi[PHYS_SECURE_PPI], 0);
+		if (arch_timer_ppi[PHYS_NONSECURE_PPI])
+			enable_percpu_irq(arch_timer_ppi[PHYS_NONSECURE_PPI], 0);
+	}
 
 	return 0;
 }
···
 		return -ENXIO;
 
 	if (arch_timer_rate == 0) {
-		arch_timer_reg_write(ARCH_TIMER_REG_CTRL, 0);
-		freq = arch_timer_reg_read(ARCH_TIMER_REG_FREQ);
+		freq = arch_timer_reg_read(ARCH_TIMER_PHYS_ACCESS,
+					   ARCH_TIMER_REG_FREQ);
 
 		/* Check the timer frequency. */
 		if (freq == 0) {
···
 		arch_timer_rate = freq;
 	}
 
-	pr_info_once("Architected local timer running at %lu.%02luMHz.\n",
-		     arch_timer_rate / 1000000, (arch_timer_rate / 10000) % 100);
+	pr_info_once("Architected local timer running at %lu.%02luMHz (%s).\n",
+		     arch_timer_rate / 1000000, (arch_timer_rate / 10000) % 100,
+		     arch_timer_use_virtual ? "virt" : "phys");
 	return 0;
 }
 
-static inline cycle_t arch_counter_get_cntpct(void)
+static u32 notrace arch_counter_get_cntpct32(void)
 {
-	u32 cvall, cvalh;
-
-	asm volatile("mrrc p15, 0, %0, %1, c14" : "=r" (cvall), "=r" (cvalh));
-
-	return ((cycle_t) cvalh << 32) | cvall;
-}
-
-static inline cycle_t arch_counter_get_cntvct(void)
-{
-	u32 cvall, cvalh;
-
-	asm volatile("mrrc p15, 1, %0, %1, c14" : "=r" (cvall), "=r" (cvalh));
-
-	return ((cycle_t) cvalh << 32) | cvall;
-}
-
-static u32 notrace arch_counter_get_cntvct32(void)
-{
-	cycle_t cntvct = arch_counter_get_cntvct();
+	cycle_t cnt = arch_counter_get_cntpct();
 
 	/*
 	 * The sched_clock infrastructure only knows about counters
 	 * with at most 32bits. Forget about the upper 24 bits for the
 	 * time being...
 	 */
-	return (u32)(cntvct & (u32)~0);
+	return (u32)cnt;
+}
+
+static u32 notrace arch_counter_get_cntvct32(void)
+{
+	cycle_t cnt = arch_counter_get_cntvct();
+
+	/*
+	 * The sched_clock infrastructure only knows about counters
+	 * with at most 32bits. Forget about the upper 24 bits for the
+	 * time being...
+	 */
+	return (u32)cnt;
 }
 
 static cycle_t arch_counter_read(struct clocksource *cs)
 {
+	/*
+	 * Always use the physical counter for the clocksource.
+	 * CNTHCTL.PL1PCTEN must be set to 1.
+	 */
 	return arch_counter_get_cntpct();
 }
 
-int read_current_timer(unsigned long *timer_val)
+static unsigned long arch_timer_read_current_timer(void)
 {
-	if (!arch_timer_rate)
-		return -ENXIO;
-	*timer_val = arch_counter_get_cntpct();
-	return 0;
+	return arch_counter_get_cntpct();
+}
+
+static cycle_t arch_counter_read_cc(const struct cyclecounter *cc)
+{
+	/*
+	 * Always use the physical counter for the clocksource.
+	 * CNTHCTL.PL1PCTEN must be set to 1.
+	 */
+	return arch_counter_get_cntpct();
 }
 
 static struct clocksource clocksource_counter = {
···
 	.flags	= CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
+static struct cyclecounter cyclecounter = {
+	.read	= arch_counter_read_cc,
+	.mask	= CLOCKSOURCE_MASK(56),
+};
+
+static struct timecounter timecounter;
+
+struct timecounter *arch_timer_get_timecounter(void)
+{
+	return &timecounter;
+}
+
 static void __cpuinit arch_timer_stop(struct clock_event_device *clk)
 {
 	pr_debug("arch_timer_teardown disable IRQ%d cpu #%d\n",
 		 clk->irq, smp_processor_id());
-	disable_percpu_irq(clk->irq);
-	if (arch_timer_ppi2)
-		disable_percpu_irq(arch_timer_ppi2);
-	arch_timer_set_mode(CLOCK_EVT_MODE_UNUSED, clk);
+
+	if (arch_timer_use_virtual)
+		disable_percpu_irq(arch_timer_ppi[VIRT_PPI]);
+	else {
+		disable_percpu_irq(arch_timer_ppi[PHYS_SECURE_PPI]);
+		if (arch_timer_ppi[PHYS_NONSECURE_PPI])
+			disable_percpu_irq(arch_timer_ppi[PHYS_NONSECURE_PPI]);
+	}
+
+	clk->set_mode(CLOCK_EVT_MODE_UNUSED, clk);
 }
 
 static struct local_timer_ops arch_timer_ops __cpuinitdata = {
···
 static int __init arch_timer_register(void)
 {
 	int err;
+	int ppi;
 
 	err = arch_timer_available();
 	if (err)
-		return err;
+		goto out;
 
 	arch_timer_evt = alloc_percpu(struct clock_event_device *);
-	if (!arch_timer_evt)
-		return -ENOMEM;
-
-	clocksource_register_hz(&clocksource_counter, arch_timer_rate);
-
-	err = request_percpu_irq(arch_timer_ppi, arch_timer_handler,
-				 "arch_timer", arch_timer_evt);
-	if (err) {
-		pr_err("arch_timer: can't register interrupt %d (%d)\n",
-		       arch_timer_ppi, err);
-		goto out_free;
+	if (!arch_timer_evt) {
+		err = -ENOMEM;
+		goto out;
 	}
 
-	if (arch_timer_ppi2) {
-		err = request_percpu_irq(arch_timer_ppi2, arch_timer_handler,
+	clocksource_register_hz(&clocksource_counter, arch_timer_rate);
+	cyclecounter.mult = clocksource_counter.mult;
+	cyclecounter.shift = clocksource_counter.shift;
+	timecounter_init(&timecounter, &cyclecounter,
+			 arch_counter_get_cntpct());
+
+	if (arch_timer_use_virtual) {
+		ppi = arch_timer_ppi[VIRT_PPI];
+		err = request_percpu_irq(ppi, arch_timer_handler_virt,
 					 "arch_timer", arch_timer_evt);
-		if (err) {
-			pr_err("arch_timer: can't register interrupt %d (%d)\n",
-			       arch_timer_ppi2, err);
-			arch_timer_ppi2 = 0;
-			goto out_free_irq;
+	} else {
+		ppi = arch_timer_ppi[PHYS_SECURE_PPI];
+		err = request_percpu_irq(ppi, arch_timer_handler_phys,
+					 "arch_timer", arch_timer_evt);
+		if (!err && arch_timer_ppi[PHYS_NONSECURE_PPI]) {
+			ppi = arch_timer_ppi[PHYS_NONSECURE_PPI];
+			err = request_percpu_irq(ppi, arch_timer_handler_phys,
+						 "arch_timer", arch_timer_evt);
+			if (err)
+				free_percpu_irq(arch_timer_ppi[PHYS_SECURE_PPI],
+						arch_timer_evt);
 		}
+	}
+
+	if (err) {
+		pr_err("arch_timer: can't register interrupt %d (%d)\n",
+		       ppi, err);
+		goto out_free;
 	}
 
 	err = local_timer_register(&arch_timer_ops);
···
 		arch_timer_global_evt.cpumask = cpumask_of(0);
 		err = arch_timer_setup(&arch_timer_global_evt);
 	}
-
 	if (err)
 		goto out_free_irq;
 
-	init_current_timer_delay(arch_timer_rate);
+	/* Use the architected timer for the delay loop. */
+	arch_delay_timer.read_current_timer = &arch_timer_read_current_timer;
+	arch_delay_timer.freq = arch_timer_rate;
+	register_current_timer_delay(&arch_delay_timer);
 	return 0;
 
 out_free_irq:
-	free_percpu_irq(arch_timer_ppi, arch_timer_evt);
-	if (arch_timer_ppi2)
-		free_percpu_irq(arch_timer_ppi2, arch_timer_evt);
+	if (arch_timer_use_virtual)
+		free_percpu_irq(arch_timer_ppi[VIRT_PPI], arch_timer_evt);
+	else {
+		free_percpu_irq(arch_timer_ppi[PHYS_SECURE_PPI],
+				arch_timer_evt);
+		if (arch_timer_ppi[PHYS_NONSECURE_PPI])
+			free_percpu_irq(arch_timer_ppi[PHYS_NONSECURE_PPI],
+					arch_timer_evt);
+	}
 
 out_free:
 	free_percpu(arch_timer_evt);
-
+out:
 	return err;
 }
 
···
 {
 	struct device_node *np;
 	u32 freq;
+	int i;
 
 	np = of_find_matching_node(NULL, arch_timer_of_match);
 	if (!np) {
···
 	if (!of_property_read_u32(np, "clock-frequency", &freq))
 		arch_timer_rate = freq;
 
-	arch_timer_ppi = irq_of_parse_and_map(np, 0);
-	arch_timer_ppi2 = irq_of_parse_and_map(np, 1);
-	pr_info("arch_timer: found %s irqs %d %d\n",
-		np->name, arch_timer_ppi, arch_timer_ppi2);
+	for (i = PHYS_SECURE_PPI; i < MAX_TIMER_PPI; i++)
+		arch_timer_ppi[i] = irq_of_parse_and_map(np, i);
+
+	/*
+	 * If no interrupt provided for virtual timer, we'll have to
+	 * stick to the physical timer. It'd better be accessible...
+	 */
+	if (!arch_timer_ppi[VIRT_PPI]) {
+		arch_timer_use_virtual = false;
+
+		if (!arch_timer_ppi[PHYS_SECURE_PPI] ||
+		    !arch_timer_ppi[PHYS_NONSECURE_PPI]) {
+			pr_warn("arch_timer: No interrupt available, giving up\n");
+			return -EINVAL;
+		}
+	}
 
 	return arch_timer_register();
 }
 
 int __init arch_timer_sched_clock_init(void)
 {
+	u32 (*cnt32)(void);
 	int err;
 
 	err = arch_timer_available();
 	if (err)
 		return err;
 
-	setup_sched_clock(arch_counter_get_cntvct32, 32, arch_timer_rate);
+	if (arch_timer_use_virtual)
+		cnt32 = arch_counter_get_cntvct32;
+	else
+		cnt32 = arch_counter_get_cntpct32;
+
+	setup_sched_clock(cnt32, 32, arch_timer_rate);
 	return 0;
 }

arch/arm/kernel/asm-offsets.c

···
   DEFINE(TI_USED_CP,		offsetof(struct thread_info, used_cp));
   DEFINE(TI_TP_VALUE,		offsetof(struct thread_info, tp_value));
   DEFINE(TI_FPSTATE,		offsetof(struct thread_info, fpstate));
+#ifdef CONFIG_VFP
   DEFINE(TI_VFPSTATE,		offsetof(struct thread_info, vfpstate));
 #ifdef CONFIG_SMP
   DEFINE(VFP_CPU,		offsetof(union vfp_state, hard.cpu));
+#endif
 #endif
 #ifdef CONFIG_ARM_THUMBEE
   DEFINE(TI_THUMBEE_STATE,	offsetof(struct thread_info, thumbee_state));

arch/arm/kernel/atags.h

···
 #else
 static inline void save_atags(struct tag *tags) { }
 #endif
+
+void convert_to_tag_list(struct tag *tags);
+
+#ifdef CONFIG_ATAGS
+struct machine_desc *setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr);
+#else
+static inline struct machine_desc *
+setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr)
+{
+	early_print("no ATAGS support: can't continue\n");
+	while (true);
+	unreachable();
+}
+#endif

arch/arm/kernel/atags_parse.c

···
+/*
+ * Tag parsing.
+ *
+ * Copyright (C) 1995-2001 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.
+ */
+
+/*
+ * This is the traditional way of passing data to the kernel at boot time.  Rather
+ * than passing a fixed inflexible structure to the kernel, we pass a list
+ * of variable-sized tags to the kernel.  The first tag must be a ATAG_CORE
+ * tag for the list to be recognised (to distinguish the tagged list from
+ * a param_struct).  The list is terminated with a zero-length tag (this tag
+ * is not parsed in any way).
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/root_dev.h>
+#include <linux/screen_info.h>
+
+#include <asm/setup.h>
+#include <asm/system_info.h>
+#include <asm/page.h>
+#include <asm/mach/arch.h>
+
+#include "atags.h"
+
+static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
+
+#ifndef MEM_SIZE
+#define MEM_SIZE	(16*1024*1024)
+#endif
+
+static struct {
+	struct tag_header hdr1;
+	struct tag_core   core;
+	struct tag_header hdr2;
+	struct tag_mem32  mem;
+	struct tag_header hdr3;
+} default_tags __initdata = {
+	{ tag_size(tag_core), ATAG_CORE },
+	{ 1, PAGE_SIZE, 0xff },
+	{ tag_size(tag_mem32), ATAG_MEM },
+	{ MEM_SIZE },
+	{ 0, ATAG_NONE }
+};
+
+static int __init parse_tag_core(const struct tag *tag)
+{
+	if (tag->hdr.size > 2) {
+		if ((tag->u.core.flags & 1) == 0)
+			root_mountflags &= ~MS_RDONLY;
+		ROOT_DEV = old_decode_dev(tag->u.core.rootdev);
+	}
+	return 0;
+}
+
+__tagtable(ATAG_CORE, parse_tag_core);
+
+static int __init parse_tag_mem32(const struct tag *tag)
+{
+	return arm_add_memory(tag->u.mem.start, tag->u.mem.size);
+}
+
+__tagtable(ATAG_MEM, parse_tag_mem32);
+
+#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
+static int __init parse_tag_videotext(const struct tag *tag)
+{
+	screen_info.orig_x            = tag->u.videotext.x;
+	screen_info.orig_y            = tag->u.videotext.y;
+	screen_info.orig_video_page   = tag->u.videotext.video_page;
+	screen_info.orig_video_mode   = tag->u.videotext.video_mode;
+	screen_info.orig_video_cols   = tag->u.videotext.video_cols;
+	screen_info.orig_video_ega_bx = tag->u.videotext.video_ega_bx;
+	screen_info.orig_video_lines  = tag->u.videotext.video_lines;
+	screen_info.orig_video_isVGA  = tag->u.videotext.video_isvga;
+	screen_info.orig_video_points = tag->u.videotext.video_points;
+	return 0;
+}
+
+__tagtable(ATAG_VIDEOTEXT, parse_tag_videotext);
+#endif
+
+#ifdef CONFIG_BLK_DEV_RAM
+static int __init parse_tag_ramdisk(const struct tag *tag)
+{
+	extern int rd_size, rd_image_start, rd_prompt, rd_doload;
+
+	rd_image_start = tag->u.ramdisk.start;
+	rd_doload = (tag->u.ramdisk.flags & 1) == 0;
+	rd_prompt = (tag->u.ramdisk.flags & 2) == 0;
+
+	if (tag->u.ramdisk.size)
+		rd_size = tag->u.ramdisk.size;
+
+	return 0;
+}
+
+__tagtable(ATAG_RAMDISK, parse_tag_ramdisk);
+#endif
+
+static int __init parse_tag_serialnr(const struct tag *tag)
+{
+	system_serial_low = tag->u.serialnr.low;
+	system_serial_high = tag->u.serialnr.high;
+	return 0;
+}
+
+__tagtable(ATAG_SERIAL, parse_tag_serialnr);
+
+static int __init parse_tag_revision(const struct tag *tag)
+{
+	system_rev = tag->u.revision.rev;
+	return 0;
+}
+
+__tagtable(ATAG_REVISION, parse_tag_revision);
+
+static int __init parse_tag_cmdline(const struct tag *tag)
+{
+#if defined(CONFIG_CMDLINE_EXTEND)
+	strlcat(default_command_line, " ", COMMAND_LINE_SIZE);
+	strlcat(default_command_line, tag->u.cmdline.cmdline,
+		COMMAND_LINE_SIZE);
+#elif defined(CONFIG_CMDLINE_FORCE)
+	pr_warning("Ignoring tag cmdline (using the default kernel command line)\n");
+#else
+	strlcpy(default_command_line, tag->u.cmdline.cmdline,
+		COMMAND_LINE_SIZE);
+#endif
+	return 0;
+}
+
+__tagtable(ATAG_CMDLINE, parse_tag_cmdline);
+
+/*
+ * Scan the tag table for this tag, and call its parse function.
+ * The tag table is built by the linker from all the __tagtable
+ * declarations.
+ */
+static int __init parse_tag(const struct tag *tag)
+{
+	extern struct tagtable __tagtable_begin, __tagtable_end;
+	struct tagtable *t;
+
+	for (t = &__tagtable_begin; t < &__tagtable_end; t++)
+		if (tag->hdr.tag == t->tag) {
+			t->parse(tag);
+			break;
+		}
+
+	return t < &__tagtable_end;
+}
+
+/*
+ * Parse all tags in the list, checking both the global and architecture
+ * specific tag tables.
+ */
+static void __init parse_tags(const struct tag *t)
+{
+	for (; t->hdr.size; t = tag_next(t))
+		if (!parse_tag(t))
+			printk(KERN_WARNING
+				"Ignoring unrecognised tag 0x%08x\n",
+				t->hdr.tag);
+}
+
+static void __init squash_mem_tags(struct tag *tag)
+{
+	for (; tag->hdr.size; tag = tag_next(tag))
+		if (tag->hdr.tag == ATAG_MEM)
+			tag->hdr.tag = ATAG_NONE;
+}
+
+struct machine_desc * __init setup_machine_tags(phys_addr_t __atags_pointer,
+						unsigned int machine_nr)
+{
+	struct tag *tags = (struct tag *)&default_tags;
+	struct machine_desc *mdesc = NULL, *p;
+	char *from = default_command_line;
+
+	default_tags.mem.start = PHYS_OFFSET;
+
+	/*
+	 * locate machine in the list of supported machines.
+	 */
+	for_each_machine_desc(p)
+		if (machine_nr == p->nr) {
+			printk("Machine: %s\n", p->name);
+			mdesc = p;
+			break;
+		}
+
+	if (!mdesc) {
+		early_print("\nError: unrecognized/unsupported machine ID"
+			    " (r1 = 0x%08x).\n\n", machine_nr);
+		dump_machine_table(); /* does not return */
+	}
+
+	if (__atags_pointer)
+		tags = phys_to_virt(__atags_pointer);
+	else if (mdesc->atag_offset)
+		tags = (void *)(PAGE_OFFSET + mdesc->atag_offset);
+
+#if defined(CONFIG_DEPRECATED_PARAM_STRUCT)
+	/*
+	 * If we have the old style parameters, convert them to
+	 * a tag list.
+	 */
+	if (tags->hdr.tag != ATAG_CORE)
+		convert_to_tag_list(tags);
+#endif
+	if (tags->hdr.tag != ATAG_CORE) {
+		early_print("Warning: Neither atags nor dtb found\n");
+		tags = (struct tag *)&default_tags;
+	}
+
+	if (mdesc->fixup)
+		mdesc->fixup(tags, &from, &meminfo);
+
+	if (tags->hdr.tag == ATAG_CORE) {
+		if (meminfo.nr_banks != 0)
+			squash_mem_tags(tags);
+		save_atags(tags);
+		parse_tags(tags);
+	}
+
+	/* parse_early_param needs a boot_command_line */
+	strlcpy(boot_command_line, from, COMMAND_LINE_SIZE);
+
+	return mdesc;
+}

arch/arm/kernel/compat.c arch/arm/kernel/atags_compat.c

···
 /*
- *  linux/arch/arm/kernel/compat.c
+ *  linux/arch/arm/kernel/atags_compat.c
  *
  *  Copyright (C) 2001 Russell King
  *
···
 
 #include <asm/mach/arch.h>
 
-#include "compat.h"
+#include "atags.h"
 
 /*
  * Usage:

arch/arm/kernel/compat.h

···
-/*
- *  linux/arch/arm/kernel/compat.h
- *
- *  Copyright (C) 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.
-*/
-
-extern void convert_to_tag_list(struct tag *tags);

arch/arm/kernel/entry-common.S

···
 	.equ NR_syscalls,0
 #define CALL(x) .equ NR_syscalls,NR_syscalls+1
 #include "calls.S"
+
+/*
+ * Ensure that the system call table is equal to __NR_syscalls,
+ * which is the value the rest of the system sees
+ */
+.ifne NR_syscalls - __NR_syscalls
+.error "__NR_syscalls is not equal to the size of the syscall table"
+.endif
+
 #undef CALL
 #define CALL(x) .long x
 

arch/arm/kernel/machine_kexec.c

···
 #include <linux/reboot.h>
 #include <linux/io.h>
 #include <linux/irq.h>
+#include <linux/memblock.h>
 #include <asm/pgtable.h>
+#include <linux/of_fdt.h>
 #include <asm/pgalloc.h>
 #include <asm/mmu_context.h>
 #include <asm/cacheflush.h>
···
 
 int machine_kexec_prepare(struct kimage *image)
 {
+	struct kexec_segment *current_segment;
+	__be32 header;
+	int i, err;
+
+	/*
+	 * No segment at default ATAGs address. try to locate
+	 * a dtb using magic.
+	 */
+	for (i = 0; i < image->nr_segments; i++) {
+		current_segment = &image->segment[i];
+
+		err = memblock_is_region_memory(current_segment->mem,
+						current_segment->memsz);
+		if (err)
+			return - EINVAL;
+
+		err = get_user(header, (__be32*)current_segment->buf);
+		if (err)
+			return err;
+
+		if (be32_to_cpu(header) == OF_DT_HEADER)
+			kexec_boot_atags = current_segment->mem;
+	}
 	return 0;
 }
 
···
 	kexec_start_address = image->start;
 	kexec_indirection_page = page_list;
 	kexec_mach_type = machine_arch_type;
-	kexec_boot_atags = image->start - KEXEC_ARM_ZIMAGE_OFFSET + KEXEC_ARM_ATAGS_OFFSET;
+	if (!kexec_boot_atags)
+		kexec_boot_atags = image->start - KEXEC_ARM_ZIMAGE_OFFSET + KEXEC_ARM_ATAGS_OFFSET;
+
 
 	/* copy our kernel relocation code to the control code page */
 	memcpy(reboot_code_buffer,

arch/arm/kernel/ptrace.c

···
 #include <asm/pgtable.h>
 #include <asm/traps.h>
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/syscalls.h>
+
 #define REG_PC	15
 #define REG_PSR	16
 /*
···
 {
 	unsigned long ip;
 
+	current_thread_info()->syscall = scno;
+
 	if (!test_thread_flag(TIF_SYSCALL_TRACE))
 		return scno;
-
-	current_thread_info()->syscall = scno;
 
 	/*
 	 * IP is used to denote syscall entry/exit:
···
 
 asmlinkage int syscall_trace_enter(struct pt_regs *regs, int scno)
 {
-	int ret = ptrace_syscall_trace(regs, scno, PTRACE_SYSCALL_ENTER);
+	scno = ptrace_syscall_trace(regs, scno, PTRACE_SYSCALL_ENTER);
+	if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
+		trace_sys_enter(regs, scno);
 	audit_syscall_entry(AUDIT_ARCH_ARM, scno, regs->ARM_r0, regs->ARM_r1,
 			    regs->ARM_r2, regs->ARM_r3);
-	return ret;
+	return scno;
 }
 
 asmlinkage int syscall_trace_exit(struct pt_regs *regs, int scno)
 {
-	int ret = ptrace_syscall_trace(regs, scno, PTRACE_SYSCALL_EXIT);
+	scno = ptrace_syscall_trace(regs, scno, PTRACE_SYSCALL_EXIT);
+	if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
+		trace_sys_exit(regs, scno);
 	audit_syscall_exit(regs);
-	return ret;
+	return scno;
 }

arch/arm/kernel/sched_clock.c

···
 #include <linux/init.h>
 #include <linux/jiffies.h>
 #include <linux/kernel.h>
+#include <linux/moduleparam.h>
 #include <linux/sched.h>
 #include <linux/syscore_ops.h>
 #include <linux/timer.h>
···
 
 static void sched_clock_poll(unsigned long wrap_ticks);
 static DEFINE_TIMER(sched_clock_timer, sched_clock_poll, 0, 0);
+static int irqtime = -1;
+
+core_param(irqtime, irqtime, int, 0400);
 
 static struct clock_data cd = {
 	.mult	= NSEC_PER_SEC / HZ,
···
 	 * Ensure that sched_clock() starts off at 0ns
 	 */
 	cd.epoch_ns = 0;
+
+	/* Enable IRQ time accounting if we have a fast enough sched_clock */
+	if (irqtime > 0 || (irqtime == -1 && rate >= 1000000))
+		enable_sched_clock_irqtime();
 
 	pr_debug("Registered %pF as sched_clock source\n", read);
 }

arch/arm/kernel/setup.c

···
 #include <linux/init.h>
 #include <linux/kexec.h>
 #include <linux/of_fdt.h>
-#include <linux/root_dev.h>
 #include <linux/cpu.h>
 #include <linux/interrupt.h>
 #include <linux/smp.h>
-#include <linux/fs.h>
 #include <linux/proc_fs.h>
 #include <linux/memblock.h>
 #include <linux/bug.h>
···
 #include <asm/unwind.h>
 #include <asm/memblock.h>
 
-#if defined(CONFIG_DEPRECATED_PARAM_STRUCT)
-#include "compat.h"
-#endif
 #include "atags.h"
 #include "tcm.h"
 
-#ifndef MEM_SIZE
-#define MEM_SIZE	(16*1024*1024)
-#endif
 
 #if defined(CONFIG_FPE_NWFPE) || defined(CONFIG_FPE_FASTFPE)
 char fpe_type[8];
···
 static char __initdata cmd_line[COMMAND_LINE_SIZE];
 struct machine_desc *machine_desc __initdata;
 
-static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
 static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '?', '?', 'b' } };
 #define ENDIANNESS ((char)endian_test.l)
 
···
 }
 early_param("mem", early_mem);
 
-static void __init
-setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
-{
-#ifdef CONFIG_BLK_DEV_RAM
-	extern int rd_size, rd_image_start, rd_prompt, rd_doload;
-
-	rd_image_start = image_start;
-	rd_prompt = prompt;
-	rd_doload = doload;
-
-	if (rd_sz)
-		rd_size = rd_sz;
-#endif
-}
-
 static void __init request_standard_resources(struct machine_desc *mdesc)
 {
 	struct memblock_region *region;
···
 		request_resource(&ioport_resource, &lp2);
 }
 
-/*
- *  Tag parsing.
- *
- * This is the new way of passing data to the kernel at boot time.  Rather
- * than passing a fixed inflexible structure to the kernel, we pass a list
- * of variable-sized tags to the kernel.  The first tag must be a ATAG_CORE
- * tag for the list to be recognised (to distinguish the tagged list from
- * a param_struct).  The list is terminated with a zero-length tag (this tag
- * is not parsed in any way).
- */
-static int __init parse_tag_core(const struct tag *tag)
-{
-	if (tag->hdr.size > 2) {
-		if ((tag->u.core.flags & 1) == 0)
-			root_mountflags &= ~MS_RDONLY;
-		ROOT_DEV = old_decode_dev(tag->u.core.rootdev);
-	}
-	return 0;
-}
-
-__tagtable(ATAG_CORE, parse_tag_core);
-
-static int __init parse_tag_mem32(const struct tag *tag)
-{
-	return arm_add_memory(tag->u.mem.start, tag->u.mem.size);
-}
-
-__tagtable(ATAG_MEM, parse_tag_mem32);
-
 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
 struct screen_info screen_info = {
  .orig_video_lines	= 30,
···
  .orig_video_isVGA	= 1,
  .orig_video_points	= 8
 };
-
-static int __init parse_tag_videotext(const struct tag *tag)
-{
-	screen_info.orig_x            = tag->u.videotext.x;
-	screen_info.orig_y            = tag->u.videotext.y;
-	screen_info.orig_video_page   = tag->u.videotext.video_page;
-	screen_info.orig_video_mode   = tag->u.videotext.video_mode;
-	screen_info.orig_video_cols   = tag->u.videotext.video_cols;
-	screen_info.orig_video_ega_bx = tag->u.videotext.video_ega_bx;
-	screen_info.orig_video_lines  = tag->u.videotext.video_lines;
-	screen_info.orig_video_isVGA  = tag->u.videotext.video_isvga;
-	screen_info.orig_video_points = tag->u.videotext.video_points;
-	return 0;
-}
-
-__tagtable(ATAG_VIDEOTEXT, parse_tag_videotext);
 #endif
-
-static int __init parse_tag_ramdisk(const struct tag *tag)
-{
-	setup_ramdisk((tag->u.ramdisk.flags & 1) == 0,
-		      (tag->u.ramdisk.flags & 2) == 0,
-		      tag->u.ramdisk.start, tag->u.ramdisk.size);
-	return 0;
-}
-
-__tagtable(ATAG_RAMDISK, parse_tag_ramdisk);
-
-static int __init parse_tag_serialnr(const struct tag *tag)
-{
-	system_serial_low = tag->u.serialnr.low;
-	system_serial_high = tag->u.serialnr.high;
-	return 0;
-}
-
-__tagtable(ATAG_SERIAL, parse_tag_serialnr);
-
-static int __init parse_tag_revision(const struct tag *tag)
-{
-	system_rev = tag->u.revision.rev;
-	return 0;
-}
-
-__tagtable(ATAG_REVISION, parse_tag_revision);
-
-static int __init parse_tag_cmdline(const struct tag *tag)
-{
-#if defined(CONFIG_CMDLINE_EXTEND)
-	strlcat(default_command_line, " ", COMMAND_LINE_SIZE);
-	strlcat(default_command_line, tag->u.cmdline.cmdline,
-		COMMAND_LINE_SIZE);
-#elif defined(CONFIG_CMDLINE_FORCE)
-	pr_warning("Ignoring tag cmdline (using the default kernel command line)\n");
-#else
-	strlcpy(default_command_line, tag->u.cmdline.cmdline,
-		COMMAND_LINE_SIZE);
-#endif
-	return 0;
-}
-
-__tagtable(ATAG_CMDLINE, parse_tag_cmdline);
-
-/*
- * Scan the tag table for this tag, and call its parse function.
- * The tag table is built by the linker from all the __tagtable
- * declarations.
- */
-static int __init parse_tag(const struct tag *tag)
-{
-	extern struct tagtable __tagtable_begin, __tagtable_end;
-	struct tagtable *t;
-
-	for (t = &__tagtable_begin; t < &__tagtable_end; t++)
-		if (tag->hdr.tag == t->tag) {
-			t->parse(tag);
-			break;
-		}
-
-	return t < &__tagtable_end;
-}
-
-/*
- * Parse all tags in the list, checking both the global and architecture
- * specific tag tables.
- */
-static void __init parse_tags(const struct tag *t)
-{
-	for (; t->hdr.size; t = tag_next(t))
-		if (!parse_tag(t))
-			printk(KERN_WARNING
-				"Ignoring unrecognised tag 0x%08x\n",
-				t->hdr.tag);
-}
-
-/*
- * This holds our defaults.
- */
-static struct init_tags {
-	struct tag_header hdr1;
-	struct tag_core   core;
-	struct tag_header hdr2;
-	struct tag_mem32  mem;
-	struct tag_header hdr3;
-} init_tags __initdata = {
-	{ tag_size(tag_core), ATAG_CORE },
-	{ 1, PAGE_SIZE, 0xff },
-	{ tag_size(tag_mem32), ATAG_MEM },
-	{ MEM_SIZE },
-	{ 0, ATAG_NONE }
-};
 
 static int __init customize_machine(void)
 {
···
 static inline void reserve_crashkernel(void) {}
 #endif /* CONFIG_KEXEC */
 
-static void __init squash_mem_tags(struct tag *tag)
-{
-	for (; tag->hdr.size; tag = tag_next(tag))
-		if (tag->hdr.tag == ATAG_MEM)
-			tag->hdr.tag = ATAG_NONE;
-}
-
-static struct machine_desc * __init setup_machine_tags(unsigned int nr)
-{
-	struct tag *tags = (struct tag *)&init_tags;
-	struct machine_desc *mdesc = NULL, *p;
-	char *from = default_command_line;
-
-	init_tags.mem.start = PHYS_OFFSET;
-
-	/*
-	 * locate machine in the list of supported machines.
-	 */
-	for_each_machine_desc(p)
-		if (nr == p->nr) {
-			printk("Machine: %s\n", p->name);
-			mdesc = p;
-			break;
-		}
-
-	if (!mdesc) {
-		early_print("\nError: unrecognized/unsupported machine ID"
-			" (r1 = 0x%08x).\n\n", nr);
-		dump_machine_table(); /* does not return */
-	}
-
-	if (__atags_pointer)
-		tags = phys_to_virt(__atags_pointer);
-	else if (mdesc->atag_offset)
-		tags = (void *)(PAGE_OFFSET + mdesc->atag_offset);
-
-#if defined(CONFIG_DEPRECATED_PARAM_STRUCT)
-	/*
-	 * If we have the old style parameters, convert them to
-	 * a tag list.
-	 */
-	if (tags->hdr.tag != ATAG_CORE)
-		convert_to_tag_list(tags);
-#endif
-
-	if (tags->hdr.tag != ATAG_CORE) {
-#if defined(CONFIG_OF)
-		/*
-		 * If CONFIG_OF is set, then assume this is a reasonably
-		 * modern system that should pass boot parameters
-		 */
-		early_print("Warning: Neither atags nor dtb found\n");
-#endif
-		tags = (struct tag *)&init_tags;
-	}
-
-	if (mdesc->fixup)
-		mdesc->fixup(tags, &from, &meminfo);
-
-	if (tags->hdr.tag == ATAG_CORE) {
-		if (meminfo.nr_banks != 0)
-			squash_mem_tags(tags);
-		save_atags(tags);
-		parse_tags(tags);
-	}
-
-	/* parse_early_param needs a boot_command_line */
-	strlcpy(boot_command_line, from, COMMAND_LINE_SIZE);
-
-	return mdesc;
-}
-
 static int __init meminfo_cmp(const void *_a, const void *_b)
 {
 	const struct membank *a = _a, *b = _b;
···
 	setup_processor();
 	mdesc = setup_machine_fdt(__atags_pointer);
 	if (!mdesc)
-		mdesc = setup_machine_tags(machine_arch_type);
+		mdesc = setup_machine_tags(__atags_pointer, machine_arch_type);
 	machine_desc = mdesc;
 	machine_name = mdesc->name;
 

arch/arm/kernel/smp.c

···
 volatile int __cpuinitdata pen_release = -1;
 
 enum ipi_msg_type {
-	IPI_TIMER = 2,
+	IPI_WAKEUP,
+	IPI_TIMER,
 	IPI_RESCHEDULE,
 	IPI_CALL_FUNC,
 	IPI_CALL_FUNC_SINGLE,
···
 }
 
 static const char *ipi_types[NR_IPI] = {
-#define S(x,s)	[x - IPI_TIMER] = s
+#define S(x,s)	[x] = s
+	S(IPI_WAKEUP, "CPU wakeup interrupts"),
 	S(IPI_TIMER, "Timer broadcast interrupts"),
 	S(IPI_RESCHEDULE, "Rescheduling interrupts"),
 	S(IPI_CALL_FUNC, "Function call interrupts"),
···
 	unsigned int cpu = smp_processor_id();
 	struct pt_regs *old_regs = set_irq_regs(regs);
 
-	if (ipinr >= IPI_TIMER && ipinr < IPI_TIMER + NR_IPI)
-		__inc_irq_stat(cpu, ipi_irqs[ipinr - IPI_TIMER]);
+	if (ipinr < NR_IPI)
+		__inc_irq_stat(cpu, ipi_irqs[ipinr]);
 
 	switch (ipinr) {
+	case IPI_WAKEUP:
+		break;
+
 	case IPI_TIMER:
 		irq_enter();
 		ipi_timer();

arch/arm/lib/delay.c

···
 	.udelay		= __loop_udelay,
 };
 
-#ifdef ARCH_HAS_READ_CURRENT_TIMER
+static const struct delay_timer *delay_timer;
+static bool delay_calibrated;
+
+int read_current_timer(unsigned long *timer_val)
+{
+	if (!delay_timer)
+		return -ENXIO;
+
+	*timer_val = delay_timer->read_current_timer();
+	return 0;
+}
+
 static void __timer_delay(unsigned long cycles)
 {
 	cycles_t start = get_cycles();
···
 	__timer_const_udelay(usecs * UDELAY_MULT);
 }
 
-void __init init_current_timer_delay(unsigned long freq)
+void __init register_current_timer_delay(const struct delay_timer *timer)
 {
-	pr_info("Switching to timer-based delay loop\n");
-	lpj_fine			= freq / HZ;
-	loops_per_jiffy			= lpj_fine;
-	arm_delay_ops.delay		= __timer_delay;
-	arm_delay_ops.const_udelay	= __timer_const_udelay;
-	arm_delay_ops.udelay		= __timer_udelay;
+	if (!delay_calibrated) {
+		pr_info("Switching to timer-based delay loop\n");
+		delay_timer			= timer;
+		lpj_fine			= timer->freq / HZ;
+		loops_per_jiffy			= lpj_fine;
+		arm_delay_ops.delay		= __timer_delay;
+		arm_delay_ops.const_udelay	= __timer_const_udelay;
+		arm_delay_ops.udelay		= __timer_udelay;
+		delay_calibrated		= true;
+	} else {
+		pr_info("Ignoring duplicate/late registration of read_current_timer delay\n");
+	}
 }
 
 unsigned long __cpuinit calibrate_delay_is_known(void)
 {
+	delay_calibrated = true;
 	return lpj_fine;
 }
-#endif

arch/arm/mach-exynos/platsmp.c

···
 
 		__raw_writel(virt_to_phys(exynos4_secondary_startup),
 			CPU1_BOOT_REG);
-		gic_raise_softirq(cpumask_of(cpu), 1);
+		gic_raise_softirq(cpumask_of(cpu), 0);
 
 		if (pen_release == -1)
 			break;

arch/arm/mach-integrator/common.h

···
+#include <linux/amba/serial.h>
+extern struct amba_pl010_data integrator_uart_data;
 void integrator_init_early(void);
+int integrator_init(bool is_cp);
 void integrator_reserve(void);
 void integrator_restart(char, const char *);

arch/arm/mach-integrator/core.c

···
 #include <asm/mach/time.h>
 #include <asm/pgtable.h>
 
-static struct amba_pl010_data integrator_uart_data;
+#include "common.h"
+
+#ifdef CONFIG_ATAGS
 
 #define INTEGRATOR_RTC_IRQ	{ IRQ_RTCINT }
 #define INTEGRATOR_UART0_IRQ	{ IRQ_UARTINT0 }
···
 	&kmi1_device,
 };
 
-static int __init integrator_init(void)
+int __init integrator_init(bool is_cp)
 {
 	int i;
 
···
 	 * hard-code them. The Integator/CP and forward have proper cell IDs.
 	 * Else we leave them undefined to the bus driver can autoprobe them.
 	 */
-	if (machine_is_integrator()) {
+	if (!is_cp) {
 		rtc_device.periphid	= 0x00041030;
 		uart0_device.periphid	= 0x00041010;
 		uart1_device.periphid	= 0x00041010;
···
 	return 0;
 }
 
-arch_initcall(integrator_init);
+#endif
 
 /*
  * On the Integrator platform, the port RTS and DTR are provided by
···
 static void integrator_uart_set_mctrl(struct amba_device *dev, void __iomem *base, unsigned int mctrl)
 {
 	unsigned int ctrls = 0, ctrlc = 0, rts_mask, dtr_mask;
+	u32 phybase = dev->res.start;
 
-	if (dev == &uart0_device) {
+	if (phybase == INTEGRATOR_UART0_BASE) {
+		/* UART0 */
 		rts_mask = 1 << 4;
 		dtr_mask = 1 << 5;
 	} else {
+		/* UART1 */
 		rts_mask = 1 << 6;
 		dtr_mask = 1 << 7;
 	}
···
 	__raw_writel(ctrlc, SC_CTRLC);
 }
 
-static struct amba_pl010_data integrator_uart_data = {
+struct amba_pl010_data integrator_uart_data = {
 	.set_mctrl = integrator_uart_set_mctrl,
 };
 

arch/arm/mach-integrator/integrator_ap.c

···
 #include <linux/mtd/physmap.h>
 #include <linux/clk.h>
 #include <linux/platform_data/clk-integrator.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
 #include <video/vga.h>
 
 #include <mach/hardware.h>
···
 	pci_map_io_early(__phys_to_pfn(PHYS_PCI_IO_BASE));
 }
 
-#define INTEGRATOR_SC_VALID_INT	0x003fffff
-
-static void __init ap_init_irq(void)
-{
-	/* Disable all interrupts initially. */
-	/* Do the core module ones */
-	writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
-
-	/* do the header card stuff next */
-	writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR);
-	writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
-
-	fpga_irq_init(VA_IC_BASE, "SC", IRQ_PIC_START,
-		-1, INTEGRATOR_SC_VALID_INT, NULL);
-	integrator_clk_init(false);
-}
-
 #ifdef CONFIG_PM
 static unsigned long ic_irq_enable;
 
···
 	.set_vpp	= ap_flash_set_vpp,
 };
 
-static struct resource cfi_flash_resource = {
-	.start		= INTEGRATOR_FLASH_BASE,
-	.end		= INTEGRATOR_FLASH_BASE + INTEGRATOR_FLASH_SIZE - 1,
-	.flags		= IORESOURCE_MEM,
-};
-
-static struct platform_device cfi_flash_device = {
-	.name		= "physmap-flash",
-	.id		= 0,
-	.dev		= {
-		.platform_data	= &ap_flash_data,
-	},
-	.num_resources	= 1,
-	.resource	= &cfi_flash_resource,
-};
-
-static void __init ap_init(void)
-{
-	unsigned long sc_dec;
-	int i;
-
-	platform_device_register(&cfi_flash_device);
-
-	sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET);
-	for (i = 0; i < 4; i++) {
-		struct lm_device *lmdev;
-
-		if ((sc_dec & (16 << i)) == 0)
-			continue;
-
-		lmdev = kzalloc(sizeof(struct lm_device), GFP_KERNEL);
-		if (!lmdev)
-			continue;
-
-		lmdev->resource.start = 0xc0000000 + 0x10000000 * i;
-		lmdev->resource.end = lmdev->resource.start + 0x0fffffff;
-		lmdev->resource.flags = IORESOURCE_MEM;
-		lmdev->irq = IRQ_AP_EXPINT0 + i;
-		lmdev->id = i;
-
-		lm_device_register(lmdev);
-	}
-}
-
 /*
  * Where is the timer (VA)?
  */
···
 	return -readl((void __iomem *) TIMER2_VA_BASE + TIMER_VALUE);
 }
 
-static void integrator_clocksource_init(unsigned long inrate)
+static void integrator_clocksource_init(unsigned long inrate,
+					void __iomem *base)
 {
-	void __iomem *base = (void __iomem *)TIMER2_VA_BASE;
 	u32 ctrl = TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC;
 	unsigned long rate = inrate;
 
···
 	setup_sched_clock(integrator_read_sched_clock, 16, rate);
 }
 
-static void __iomem * const clkevt_base = (void __iomem *)TIMER1_VA_BASE;
+static void __iomem * clkevt_base;
 
 /*
  * IRQ handler for the timer
···
 	.dev_id		= &integrator_clockevent,
 };
 
-static void integrator_clockevent_init(unsigned long inrate)
+static void integrator_clockevent_init(unsigned long inrate,
+				void __iomem *base, int irq)
 {
 	unsigned long rate = inrate;
 	unsigned int ctrl = 0;
 
+	clkevt_base = base;
 	/* Calculate and program a divisor */
 	if (rate > 0x100000 * HZ) {
 		rate /= 256;
···
 	timer_reload = rate / HZ;
 	writel(ctrl, clkevt_base + TIMER_CTRL);
 
-	setup_irq(IRQ_TIMERINT1, &integrator_timer_irq);
+	setup_irq(irq, &integrator_timer_irq);
 	clockevents_config_and_register(&integrator_clockevent,
 					rate,
 					1,
···
 {
 }
 
+#ifdef CONFIG_OF
+
+static void __init ap_init_timer_of(void)
+{
+	struct device_node *node;
+	const char *path;
+	void __iomem *base;
+	int err;
+	int irq;
+	struct clk *clk;
+	unsigned long rate;
+
+	clk = clk_get_sys("ap_timer", NULL);
+	BUG_ON(IS_ERR(clk));
+	clk_prepare_enable(clk);
+	rate = clk_get_rate(clk);
+
+	err = of_property_read_string(of_aliases,
+				"arm,timer-primary", &path);
+	if (WARN_ON(err))
+		return;
+	node = of_find_node_by_path(path);
+	base = of_iomap(node, 0);
+	if (WARN_ON(!base))
+		return;
+	writel(0, base + TIMER_CTRL);
+	integrator_clocksource_init(rate, base);
+
+	err = of_property_read_string(of_aliases,
+				"arm,timer-secondary", &path);
+	if (WARN_ON(err))
+		return;
+	node = of_find_node_by_path(path);
+	base = of_iomap(node, 0);
+	if (WARN_ON(!base))
+		return;
+	irq = irq_of_parse_and_map(node, 0);
+	writel(0, base + TIMER_CTRL);
+	integrator_clockevent_init(rate, base, irq);
+}
+
+static struct sys_timer ap_of_timer = {
+	.init		= ap_init_timer_of,
+};
+
+static const struct of_device_id fpga_irq_of_match[] __initconst = {
+	{ .compatible = "arm,versatile-fpga-irq", .data = fpga_irq_of_init, },
+	{ /* Sentinel */ }
+};
+
+static void __init ap_init_irq_of(void)
+{
+	/* disable core module IRQs */
+	writel(0xffffffffU, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
+	of_irq_init(fpga_irq_of_match);
+	integrator_clk_init(false);
+}
+
+/* For the Device Tree, add in the UART callbacks as AUXDATA */
+static struct of_dev_auxdata ap_auxdata_lookup[] __initdata = {
+	OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_RTC_BASE,
+		"rtc", NULL),
+	OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART0_BASE,
+		"uart0", &integrator_uart_data),
+	OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART1_BASE,
+		"uart1", &integrator_uart_data),
+	OF_DEV_AUXDATA("arm,primecell", KMI0_BASE,
+		"kmi0", NULL),
+	OF_DEV_AUXDATA("arm,primecell", KMI1_BASE,
+		"kmi1", NULL),
+	OF_DEV_AUXDATA("cfi-flash", INTEGRATOR_FLASH_BASE,
+		"physmap-flash", &ap_flash_data),
+	{ /* sentinel */ },
+};
+
+static void __init ap_init_of(void)
+{
+	unsigned long sc_dec;
+	int i;
+
+	of_platform_populate(NULL, of_default_bus_match_table,
+			ap_auxdata_lookup, NULL);
+
+	sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET);
+	for (i = 0; i < 4; i++) {
+		struct lm_device *lmdev;
+
+		if ((sc_dec & (16 << i)) == 0)
+			continue;
+
+		lmdev = kzalloc(sizeof(struct lm_device), GFP_KERNEL);
+		if (!lmdev)
+			continue;
+
+		lmdev->resource.start = 0xc0000000 + 0x10000000 * i;
+		lmdev->resource.end = lmdev->resource.start + 0x0fffffff;
+		lmdev->resource.flags = IORESOURCE_MEM;
+		lmdev->irq = IRQ_AP_EXPINT0 + i;
+		lmdev->id = i;
+
+		lm_device_register(lmdev);
+	}
+}
+
+static const char * ap_dt_board_compat[] = {
+	"arm,integrator-ap",
+	NULL,
+};
+
+DT_MACHINE_START(INTEGRATOR_AP_DT, "ARM Integrator/AP (Device Tree)")
+	.reserve	= integrator_reserve,
+	.map_io		= ap_map_io,
+	.nr_irqs	= NR_IRQS_INTEGRATOR_AP,
+	.init_early	= ap_init_early,
+	.init_irq	= ap_init_irq_of,
+	.handle_irq	= fpga_handle_irq,
+	.timer		= &ap_of_timer,
+	.init_machine	= ap_init_of,
+	.restart	= integrator_restart,
+	.dt_compat      = ap_dt_board_compat,
+MACHINE_END
+
+#endif
+
+#ifdef CONFIG_ATAGS
+
 /*
- * Set up timer(s).
+ * This is where non-devicetree initialization code is collected and stashed
+ * for eventual deletion.
  */
+
+static struct resource cfi_flash_resource = {
+	.start		= INTEGRATOR_FLASH_BASE,
+	.end		= INTEGRATOR_FLASH_BASE + INTEGRATOR_FLASH_SIZE - 1,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device cfi_flash_device = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &ap_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &cfi_flash_resource,
+};
+
 static void __init ap_init_timer(void)
 {
 	struct clk *clk;
···
 	writel(0, TIMER1_VA_BASE + TIMER_CTRL);
 	writel(0, TIMER2_VA_BASE + TIMER_CTRL);
 
-	integrator_clocksource_init(rate);
-	integrator_clockevent_init(rate);
+	integrator_clocksource_init(rate, (void __iomem *)TIMER2_VA_BASE);
+	integrator_clockevent_init(rate, (void __iomem *)TIMER1_VA_BASE,
+				IRQ_TIMERINT1);
 }
 
 static struct sys_timer ap_timer = {
 	.init		= ap_init_timer,
 };
+
+#define INTEGRATOR_SC_VALID_INT	0x003fffff
+
+static void __init ap_init_irq(void)
+{
+	/* Disable all interrupts initially. */
+	/* Do the core module ones */
+	writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
+
+	/* do the header card stuff next */
+	writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR);
+	writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
+
+	fpga_irq_init(VA_IC_BASE, "SC", IRQ_PIC_START,
+		-1, INTEGRATOR_SC_VALID_INT, NULL);
+	integrator_clk_init(false);
+}
+
+static void __init ap_init(void)
+{
+	unsigned long sc_dec;
+	int i;
+
+	platform_device_register(&cfi_flash_device);
+
+	sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET);
+	for (i = 0; i < 4; i++) {
+		struct lm_device *lmdev;
+
+		if ((sc_dec & (16 << i)) == 0)
+			continue;
+
+		lmdev = kzalloc(sizeof(struct lm_device), GFP_KERNEL);
+		if (!lmdev)
+			continue;
+
+		lmdev->resource.start = 0xc0000000 + 0x10000000 * i;
+		lmdev->resource.end = lmdev->resource.start + 0x0fffffff;
+		lmdev->resource.flags = IORESOURCE_MEM;
+		lmdev->irq = IRQ_AP_EXPINT0 + i;
+		lmdev->id = i;
+
+		lm_device_register(lmdev);
+	}
+
+	integrator_init(false);
+}
 
 MACHINE_START(INTEGRATOR, "ARM-Integrator")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
···
 	.init_machine	= ap_init,
 	.restart	= integrator_restart,
 MACHINE_END
+
+#endif

arch/arm/mach-integrator/integrator_cp.c

···
 #include <linux/gfp.h>
 #include <linux/mtd/physmap.h>
 #include <linux/platform_data/clk-integrator.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
 
 #include <mach/hardware.h>
 #include <mach/platform.h>
···
 #include "common.h"
 
 #define INTCP_PA_FLASH_BASE		0x24000000
-#define INTCP_FLASH_SIZE		SZ_32M
 
 #define INTCP_PA_CLCD_BASE		0xc0000000
-
-#define INTCP_VA_CIC_BASE		__io_address(INTEGRATOR_HDR_BASE + 0x40)
-#define INTCP_VA_PIC_BASE		__io_address(INTEGRATOR_IC_BASE)
-#define INTCP_VA_SIC_BASE		__io_address(INTEGRATOR_CP_SIC_BASE)
-
-#define INTCP_ETH_SIZE			0x10
 
 #define INTCP_VA_CTRL_BASE		__io_address(INTEGRATOR_CP_CTL_BASE)
 #define INTCP_FLASHPROG			0x04
···
 	iotable_init(intcp_io_desc, ARRAY_SIZE(intcp_io_desc));
 }
 
-static void __init intcp_init_irq(void)
-{
-	u32 pic_mask, cic_mask, sic_mask;
-
-	/* These masks are for the HW IRQ registers */
-	pic_mask = ~((~0u) << (11 - IRQ_PIC_START));
-	pic_mask |= (~((~0u) << (29 - 22))) << 22;
-	cic_mask = ~((~0u) << (1 + IRQ_CIC_END - IRQ_CIC_START));
-	sic_mask = ~((~0u) << (1 + IRQ_SIC_END - IRQ_SIC_START));
-
-	/*
-	 * Disable all interrupt sources
-	 */
-	writel(0xffffffff, INTCP_VA_PIC_BASE + IRQ_ENABLE_CLEAR);
-	writel(0xffffffff, INTCP_VA_PIC_BASE + FIQ_ENABLE_CLEAR);
-	writel(0xffffffff, INTCP_VA_CIC_BASE + IRQ_ENABLE_CLEAR);
-	writel(0xffffffff, INTCP_VA_CIC_BASE + FIQ_ENABLE_CLEAR);
-	writel(sic_mask, INTCP_VA_SIC_BASE + IRQ_ENABLE_CLEAR);
-	writel(sic_mask, INTCP_VA_SIC_BASE + FIQ_ENABLE_CLEAR);
-
-	fpga_irq_init(INTCP_VA_PIC_BASE, "PIC", IRQ_PIC_START,
-		      -1, pic_mask, NULL);
-
-	fpga_irq_init(INTCP_VA_CIC_BASE, "CIC", IRQ_CIC_START,
-		      -1, cic_mask, NULL);
-
-	fpga_irq_init(INTCP_VA_SIC_BASE, "SIC", IRQ_SIC_START,
-		      IRQ_CP_CPPLDINT, sic_mask, NULL);
-	integrator_clk_init(true);
-}
-
 /*
  * Flash handling.
  */
···
 	.set_vpp	= intcp_flash_set_vpp,
 };
 
-static struct resource intcp_flash_resource = {
-	.start		= INTCP_PA_FLASH_BASE,
-	.end		= INTCP_PA_FLASH_BASE + INTCP_FLASH_SIZE - 1,
-	.flags		= IORESOURCE_MEM,
-};
-
-static struct platform_device intcp_flash_device = {
-	.name		= "physmap-flash",
-	.id		= 0,
-	.dev		= {
-		.platform_data	= &intcp_flash_data,
-	},
-	.num_resources	= 1,
-	.resource	= &intcp_flash_resource,
-};
-
-static struct resource smc91x_resources[] = {
-	[0] = {
-		.start	= INTEGRATOR_CP_ETH_BASE,
-		.end	= INTEGRATOR_CP_ETH_BASE + INTCP_ETH_SIZE - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-	[1] = {
-		.start	= IRQ_CP_ETHINT,
-		.end	= IRQ_CP_ETHINT,
-		.flags	= IORESOURCE_IRQ,
-	},
-};
-
-static struct platform_device smc91x_device = {
-	.name		= "smc91x",
-	.id		= 0,
-	.num_resources	= ARRAY_SIZE(smc91x_resources),
-	.resource	= smc91x_resources,
-};
-
-static struct platform_device *intcp_devs[] __initdata = {
-	&intcp_flash_device,
-	&smc91x_device,
-};
-
 /*
  * It seems that the card insertion interrupt remains active after
  * we've acknowledged it.  We therefore ignore the interrupt, and
···
 	.gpio_wp	= -1,
 	.gpio_cd	= -1,
 };
-
-#define INTEGRATOR_CP_MMC_IRQS	{ IRQ_CP_MMCIINT0, IRQ_CP_MMCIINT1 }
-#define INTEGRATOR_CP_AACI_IRQS	{ IRQ_CP_AACIINT }
-
-static AMBA_APB_DEVICE(mmc, "mmci", 0, INTEGRATOR_CP_MMC_BASE,
-	INTEGRATOR_CP_MMC_IRQS, &mmc_data);
-
-static AMBA_APB_DEVICE(aaci, "aaci", 0, INTEGRATOR_CP_AACI_BASE,
-	INTEGRATOR_CP_AACI_IRQS, NULL);
-
 
 /*
  * CLCD support
···
 	.remove		= versatile_clcd_remove_dma,
 };
 
-static AMBA_AHB_DEVICE(clcd, "clcd", 0, INTCP_PA_CLCD_BASE,
-	{ IRQ_CP_CLCDCINT }, &clcd_data);
-
-static struct amba_device *amba_devs[] __initdata = {
-	&mmc_device,
-	&aaci_device,
-	&clcd_device,
-};
-
 #define REFCOUNTER (__io_address(INTEGRATOR_HDR_BASE) + 0x28)
 
 static void __init intcp_init_early(void)
···
 #endif
 }
 
-static void __init intcp_init(void)
+static void __init intcp_timer_init_of(void)
 {
-	int i;
+	struct device_node *node;
+	const char *path;
+	void __iomem *base;
+	int err;
+	int irq;
 
-	platform_add_devices(intcp_devs, ARRAY_SIZE(intcp_devs));
+	err = of_property_read_string(of_aliases,
+				"arm,timer-primary", &path);
+	if (WARN_ON(err))
+		return;
+	node = of_find_node_by_path(path);
+	base = of_iomap(node, 0);
+	if (WARN_ON(!base))
+		return;
+	writel(0, base + TIMER_CTRL);
+	sp804_clocksource_init(base, node->name);
 
-	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
-		struct amba_device *d = amba_devs[i];
-		amba_device_register(d, &iomem_resource);
-	}
+	err = of_property_read_string(of_aliases,
+				"arm,timer-secondary", &path);
+	if (WARN_ON(err))
+		return;
+	node = of_find_node_by_path(path);
+	base = of_iomap(node, 0);
+	if (WARN_ON(!base))
+		return;
+	irq = irq_of_parse_and_map(node, 0);
+	writel(0, base + TIMER_CTRL);
+	sp804_clockevents_init(base, irq, node->name);
+}
+
+static struct sys_timer cp_of_timer = {
+	.init		= intcp_timer_init_of,
+};
+
+#ifdef CONFIG_OF
+
+static const struct of_device_id fpga_irq_of_match[] __initconst = {
+	{ .compatible = "arm,versatile-fpga-irq", .data = fpga_irq_of_init, },
+	{ /* Sentinel */ }
+};
+
+static void __init intcp_init_irq_of(void)
+{
+	of_irq_init(fpga_irq_of_match);
+	integrator_clk_init(true);
+}
+
+/*
+ * For the Device Tree, add in the UART, MMC and CLCD specifics as AUXDATA
+ * and enforce the bus names since these are used for clock lookups.
+ */
+static struct of_dev_auxdata intcp_auxdata_lookup[] __initdata = {
+	OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_RTC_BASE,
+		"rtc", NULL),
+	OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART0_BASE,
+		"uart0", &integrator_uart_data),
+	OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART1_BASE,
+		"uart1", &integrator_uart_data),
+	OF_DEV_AUXDATA("arm,primecell", KMI0_BASE,
+		"kmi0", NULL),
+	OF_DEV_AUXDATA("arm,primecell", KMI1_BASE,
+		"kmi1", NULL),
+	OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_CP_MMC_BASE,
+		"mmci", &mmc_data),
+	OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_CP_AACI_BASE,
+		"aaci", &mmc_data),
+	OF_DEV_AUXDATA("arm,primecell", INTCP_PA_CLCD_BASE,
+		"clcd", &clcd_data),
+	OF_DEV_AUXDATA("cfi-flash", INTCP_PA_FLASH_BASE,
+		"physmap-flash", &intcp_flash_data),
+	{ /* sentinel */ },
+};
+
+static void __init intcp_init_of(void)
+{
+	of_platform_populate(NULL, of_default_bus_match_table,
+			intcp_auxdata_lookup, NULL);
+}
+
+static const char * intcp_dt_board_compat[] = {
+	"arm,integrator-cp",
+	NULL,
+};
+
+DT_MACHINE_START(INTEGRATOR_CP_DT, "ARM Integrator/CP (Device Tree)")
+	.reserve	= integrator_reserve,
+	.map_io		= intcp_map_io,
+	.nr_irqs	= NR_IRQS_INTEGRATOR_CP,
+	.init_early	= intcp_init_early,
+	.init_irq	= intcp_init_irq_of,
+	.handle_irq	= fpga_handle_irq,
+	.timer		= &cp_of_timer,
+	.init_machine	= intcp_init_of,
+	.restart	= integrator_restart,
+	.dt_compat      = intcp_dt_board_compat,
+MACHINE_END
+
+#endif
+
+#ifdef CONFIG_ATAGS
+
+/*
+ * This is where non-devicetree initialization code is collected and stashed
+ * for eventual deletion.
+ */
+
+#define INTCP_FLASH_SIZE		SZ_32M
+
+static struct resource intcp_flash_resource = {
+	.start		= INTCP_PA_FLASH_BASE,
+	.end		= INTCP_PA_FLASH_BASE + INTCP_FLASH_SIZE - 1,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device intcp_flash_device = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &intcp_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &intcp_flash_resource,
+};
+
+#define INTCP_ETH_SIZE			0x10
+
+static struct resource smc91x_resources[] = {
+	[0] = {
+		.start	= INTEGRATOR_CP_ETH_BASE,
+		.end	= INTEGRATOR_CP_ETH_BASE + INTCP_ETH_SIZE - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= IRQ_CP_ETHINT,
+		.end	= IRQ_CP_ETHINT,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device smc91x_device = {
+	.name		= "smc91x",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(smc91x_resources),
+	.resource	= smc91x_resources,
+};
+
+static struct platform_device *intcp_devs[] __initdata = {
+	&intcp_flash_device,
+	&smc91x_device,
+};
+
+#define INTCP_VA_CIC_BASE		__io_address(INTEGRATOR_HDR_BASE + 0x40)
+#define INTCP_VA_PIC_BASE		__io_address(INTEGRATOR_IC_BASE)
+#define INTCP_VA_SIC_BASE		__io_address(INTEGRATOR_CP_SIC_BASE)
+
+static void __init intcp_init_irq(void)
+{
+	u32 pic_mask, cic_mask, sic_mask;
+
+	/* These masks are for the HW IRQ registers */
+	pic_mask = ~((~0u) << (11 - IRQ_PIC_START));
+	pic_mask |= (~((~0u) << (29 - 22))) << 22;
+	cic_mask = ~((~0u) << (1 + IRQ_CIC_END - IRQ_CIC_START));
+	sic_mask = ~((~0u) << (1 + IRQ_SIC_END - IRQ_SIC_START));
+
+	/*
+	 * Disable all interrupt sources
+	 */
+	writel(0xffffffff, INTCP_VA_PIC_BASE + IRQ_ENABLE_CLEAR);
+	writel(0xffffffff, INTCP_VA_PIC_BASE + FIQ_ENABLE_CLEAR);
+	writel(0xffffffff, INTCP_VA_CIC_BASE + IRQ_ENABLE_CLEAR);
+	writel(0xffffffff, INTCP_VA_CIC_BASE + FIQ_ENABLE_CLEAR);
+	writel(sic_mask, INTCP_VA_SIC_BASE + IRQ_ENABLE_CLEAR);
+	writel(sic_mask, INTCP_VA_SIC_BASE + FIQ_ENABLE_CLEAR);
+
+	fpga_irq_init(INTCP_VA_PIC_BASE, "PIC", IRQ_PIC_START,
+		      -1, pic_mask, NULL);
+
+	fpga_irq_init(INTCP_VA_CIC_BASE, "CIC", IRQ_CIC_START,
+		      -1, cic_mask, NULL);
+
+	fpga_irq_init(INTCP_VA_SIC_BASE, "SIC", IRQ_SIC_START,
+		      IRQ_CP_CPPLDINT, sic_mask, NULL);
+
+	integrator_clk_init(true);
 }
 
 #define TIMER0_VA_BASE __io_address(INTEGRATOR_TIMER0_BASE)
···
 	.init		= intcp_timer_init,
 };
 
+#define INTEGRATOR_CP_MMC_IRQS	{ IRQ_CP_MMCIINT0, IRQ_CP_MMCIINT1 }
+#define INTEGRATOR_CP_AACI_IRQS	{ IRQ_CP_AACIINT }
+
+static AMBA_APB_DEVICE(mmc, "mmci", 0, INTEGRATOR_CP_MMC_BASE,
+	INTEGRATOR_CP_MMC_IRQS, &mmc_data);
+
+static AMBA_APB_DEVICE(aaci, "aaci", 0, INTEGRATOR_CP_AACI_BASE,
+	INTEGRATOR_CP_AACI_IRQS, NULL);
+
+static AMBA_AHB_DEVICE(clcd, "clcd", 0, INTCP_PA_CLCD_BASE,
+	{ IRQ_CP_CLCDCINT }, &clcd_data);
+
+static struct amba_device *amba_devs[] __initdata = {
+	&mmc_device,
+	&aaci_device,
+	&clcd_device,
+};
+
+static void __init intcp_init(void)
+{
+	int i;
+
+	platform_add_devices(intcp_devs, ARRAY_SIZE(intcp_devs));
+
+	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
+		struct amba_device *d = amba_devs[i];
+		amba_device_register(d, &iomem_resource);
+	}
+	integrator_init(true);
+}
+
 MACHINE_START(CINTEGRATOR, "ARM-IntegratorCP")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 	.atag_offset	= 0x100,
···
 	.init_machine	= intcp_init,
 	.restart	= integrator_restart,
 MACHINE_END
+
+#endif

arch/arm/mach-sa1100/include/mach/SA-1111.h

···
-/*
- * Moved to new location
- */
-#warning using old SA-1111.h - update to <asm/hardware/sa1111.h>
-#include <asm/hardware/sa1111.h>

arch/arm/mach-sa1100/include/mach/lart.h

···
-#ifndef _INCLUDE_LART_H
-#define _INCLUDE_LART_H
-
-#define LART_GPIO_ETH0			GPIO_GPIO0
-#define LART_IRQ_ETH0			IRQ_GPIO0
-
-#define LART_GPIO_IDE			GPIO_GPIO1
-#define LART_IRQ_IDE			IRQ_GPIO1
-
-#define LART_GPIO_UCB1200		GPIO_GPIO18
-#define LART_IRQ_UCB1200		IRQ_GPIO18
-
-#endif

arch/arm/mach-shmobile/smp-emev2.c

···
 	/* Tell ROM loader about our vector (in headsmp.S) */
 	emev2_set_boot_vector(__pa(shmobile_secondary_vector));
 
-	gic_raise_softirq(cpumask_of(cpu), 1);
+	gic_raise_softirq(cpumask_of(cpu), 0);
 	return 0;
 }
 

arch/arm/mm/alignment.c

···
 	unsigned long instr = *pinstr;
 	u16 tinst1 = (instr >> 16) & 0xffff;
 	u16 tinst2 = instr & 0xffff;
-	poffset->un = 0;
 
 	switch (tinst1 & 0xffe0) {
 	/* A6.3.5 Load/Store multiple */
···
 		break;
 
 	case 0x08000000:	/* ldm or stm, or thumb-2 32bit instruction */
-		if (thumb2_32b)
+		if (thumb2_32b) {
+			offset.un = 0;
 			handler = do_alignment_t32_to_handler(&instr, regs, &offset);
-		else
+		} else
 			handler = do_alignment_ldmstm;
 		break;
 

arch/arm/mm/cache-l2x0.c

···
 		/* l2x0 controller is disabled */
 		writel_relaxed(aux, l2x0_base + L2X0_AUX_CTRL);
 
-		l2x0_saved_regs.aux_ctrl = aux;
-
 		l2x0_inv_all();
 
 		/* enable L2X0 */
 		writel_relaxed(1, l2x0_base + L2X0_CTRL);
 	}
+
+	/* Re-read it in case some bits are reserved. */
+	aux = readl_relaxed(l2x0_base + L2X0_AUX_CTRL);
+
+	/* Save the value for resuming. */
+	l2x0_saved_regs.aux_ctrl = aux;
 
 	outer_cache.inv_range = l2x0_inv_range;
 	outer_cache.clean_range = l2x0_clean_range;

arch/arm/mm/cache-v7.S

···
  * isn't mapped, fail with -EFAULT.
  */
 9001:
+#ifdef CONFIG_ARM_ERRATA_775420
+	dsb
+#endif
 	mov	r0, #-EFAULT
 	mov	pc, lr
  UNWIND(.fnend		)

arch/arm/mm/init.c

···
 
 	BUG_ON(!arm_memblock_steal_permitted);
 
-	phys = memblock_alloc(size, align);
+	phys = memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ANYWHERE);
 	memblock_free(phys, size);
 	memblock_remove(phys, size);
 

arch/arm/mm/ioremap.c

···
  	if (!area)
  		return NULL;
  	addr = (unsigned long)area->addr;
+	area->phys_addr = __pfn_to_phys(pfn);
 
 #if !defined(CONFIG_SMP) && !defined(CONFIG_ARM_LPAE)
 	if (DOMAIN_IO == 0 &&

arch/arm/plat-versatile/fpga-irq.c

···
 #include <linux/io.h>
 #include <linux/irqdomain.h>
 #include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
 
 #include <asm/exception.h>
 #include <asm/mach/irq.h>
···
 #define IRQ_RAW_STATUS		0x04
 #define IRQ_ENABLE_SET		0x08
 #define IRQ_ENABLE_CLEAR	0x0c
+#define INT_SOFT_SET		0x10
+#define INT_SOFT_CLEAR		0x14
+#define FIQ_STATUS		0x20
+#define FIQ_RAW_STATUS		0x24
+#define FIQ_ENABLE		0x28
+#define FIQ_ENABLE_SET		0x28
+#define FIQ_ENABLE_CLEAR	0x2C
 
 /**
  * struct fpga_irq_data - irq data container for the FPGA IRQ controller
  * @base: memory offset in virtual memory
- * @irq_start: first IRQ number handled by this instance
  * @chip: chip container for this instance
  * @domain: IRQ domain for this instance
  * @valid: mask for valid IRQs on this controller
···
  */
 struct fpga_irq_data {
 	void __iomem *base;
-	unsigned int irq_start;
 	struct irq_chip chip;
 	u32 valid;
 	struct irq_domain *domain;
···
 	.xlate = irq_domain_xlate_onetwocell,
 };
 
-void __init fpga_irq_init(void __iomem *base, const char *name, int irq_start,
-			  int parent_irq, u32 valid, struct device_node *node)
-{
+static __init struct fpga_irq_data *
+fpga_irq_prep_struct(void __iomem *base, const char *name, u32 valid) {
 	struct fpga_irq_data *f;
 
 	if (fpga_irq_id >= ARRAY_SIZE(fpga_irq_devices)) {
 		printk(KERN_ERR "%s: too few FPGA IRQ controllers, increase CONFIG_PLAT_VERSATILE_FPGA_IRQ_NR\n", __func__);
-		return;
+		return NULL;
 	}
-
 	f = &fpga_irq_devices[fpga_irq_id];
 	f->base = base;
-	f->irq_start = irq_start;
 	f->chip.name = name;
 	f->chip.irq_ack = fpga_irq_mask;
 	f->chip.irq_mask = fpga_irq_mask;
 	f->chip.irq_unmask = fpga_irq_unmask;
 	f->valid = valid;
+	fpga_irq_id++;
+
+	return f;
+}
+
+void __init fpga_irq_init(void __iomem *base, const char *name, int irq_start,
+			  int parent_irq, u32 valid, struct device_node *node)
+{
+	struct fpga_irq_data *f;
+
+	f = fpga_irq_prep_struct(base, name, valid);
+	if (!f)
+		return;
 
 	if (parent_irq != -1) {
 		irq_set_handler_data(parent_irq, f);
 		irq_set_chained_handler(parent_irq, fpga_irq_handle);
 	}
 
-	f->domain = irq_domain_add_legacy(node, fls(valid), f->irq_start, 0,
+	f->domain = irq_domain_add_legacy(node, fls(valid), irq_start, 0,
 					  &fpga_irqdomain_ops, f);
 	pr_info("FPGA IRQ chip %d \"%s\" @ %p, %u irqs\n",
 		fpga_irq_id, name, base, f->used_irqs);
-
-	fpga_irq_id++;
 }
+
+#ifdef CONFIG_OF
+int __init fpga_irq_of_init(struct device_node *node,
+			    struct device_node *parent)
+{
+	struct fpga_irq_data *f;
+	void __iomem *base;
+	u32 clear_mask;
+	u32 valid_mask;
+
+	if (WARN_ON(!node))
+		return -ENODEV;
+
+	base = of_iomap(node, 0);
+	WARN(!base, "unable to map fpga irq registers\n");
+
+	if (of_property_read_u32(node, "clear-mask", &clear_mask))
+		clear_mask = 0;
+
+	if (of_property_read_u32(node, "valid-mask", &valid_mask))
+		valid_mask = 0;
+
+	f = fpga_irq_prep_struct(base, node->name, valid_mask);
+	if (!f)
+		return -ENOMEM;
+
+	writel(clear_mask, base + IRQ_ENABLE_CLEAR);
+	writel(clear_mask, base + FIQ_ENABLE_CLEAR);
+
+	f->domain = irq_domain_add_linear(node, fls(valid_mask), &fpga_irqdomain_ops, f);
+	f->used_irqs = hweight32(valid_mask);
+
+	pr_info("FPGA IRQ chip %d \"%s\" @ %p, %u irqs\n",
+		fpga_irq_id, node->name, base, f->used_irqs);
+	return 0;
+}
+#endif

arch/arm/plat-versatile/include/plat/fpga-irq.h

···
 void fpga_handle_irq(struct pt_regs *regs);
 void fpga_irq_init(void __iomem *, const char *, int, int, u32,
 		struct device_node *node);
+int fpga_irq_of_init(struct device_node *node,
+		     struct device_node *parent);
 
 #endif