Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:

 - clang assembly fixes from Ard

 - optimisations and cleanups for Aurora L2 cache support

 - efficient L2 cache support for secure monitor API on Exynos SoCs

 - debug menu cleanup from Daniel Thompson to allow better behaviour for
   multiplatform kernels

 - StrongARM SA11x0 conversion to irq domains, and pxa_timer

 - kprobes updates for older ARM CPUs

 - move probes support out of arch/arm/kernel to arch/arm/probes

 - add inline asm support for the rbit (reverse bits) instruction

 - provide an ARM mode secondary CPU entry point (for Qualcomm CPUs)

 - remove the unused ARMv3 user access code

 - add driver_override support to AMBA Primecell bus

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (55 commits)
  ARM: 8256/1: driver coamba: add device binding path 'driver_override'
  ARM: 8301/1: qcom: Use secondary_startup_arm()
  ARM: 8302/1: Add a secondary_startup that assumes ARM mode
  ARM: 8300/1: teach __asmeq that r11 == fp and r12 == ip
  ARM: kprobes: Fix compilation error caused by superfluous '*'
  ARM: 8297/1: cache-l2x0: optimize aurora range operations
  ARM: 8296/1: cache-l2x0: clean up aurora cache handling
  ARM: 8284/1: sa1100: clear RCSR_SMR on resume
  ARM: 8283/1: sa1100: collie: clear PWER register on machine init
  ARM: 8282/1: sa1100: use handle_domain_irq
  ARM: 8281/1: sa1100: move GPIO-related IRQ code to gpio driver
  ARM: 8280/1: sa1100: switch to irq_domain_add_simple()
  ARM: 8279/1: sa1100: merge both GPIO irqdomains
  ARM: 8278/1: sa1100: split irq handling for low GPIOs
  ARM: 8291/1: replace magic number with PAGE_SHIFT macro in fixup_pv code
  ARM: 8290/1: decompressor: fix a wrong comment
  ARM: 8286/1: mm: Fix dma_contiguous_reserve comment
  ARM: 8248/1: pm: remove outdated comment
  ARM: 8274/1: Fix DEBUG_LL for multi-platform kernels (without PL01X)
  ARM: 8273/1: Seperate DEBUG_UART_PHYS from DEBUG_LL on EP93XX
  ...

Author: torvalds

Documentation/ABI/testing/sysfs-bus-amba

@@ -0,0 +1,20 @@
+What:		/sys/bus/amba/devices/.../driver_override
+Date:		September 2014
+Contact:	Antonios Motakis <[email protected]>
+Description:
+		This file allows the driver for a device to be specified which
+		will override standard OF, ACPI, ID table, and name matching.
+		When specified, only a driver with a name matching the value
+		written to driver_override will have an opportunity to bind to
+		the device. The override is specified by writing a string to the
+		driver_override file (echo vfio-amba > driver_override)	and may
+		be cleared with an empty string (echo > driver_override).
+		This returns the device to standard matching rules binding.
+		Writing to driver_override does not automatically unbind the
+		device from its current driver or make any attempt to
+		automatically load the specified driver. If no driver with a
+		matching name is currently loaded in the kernel, the device will
+		not bind to any driver. This also allows devices to opt-out of
+		driver binding using a driver_override name such as "none".
+		Only a single driver may be specified in the override, there is
+		no support for parsing delimiters.

Documentation/devicetree/bindings/arm/l2cc.txt

@@ -57,6 +57,16 @@ Optional properties:
 - cache-id-part: cache id part number to be used if it is not present
   on hardware
 - wt-override: If present then L2 is forced to Write through mode
+- arm,double-linefill : Override double linefill enable setting. Enable if
+  non-zero, disable if zero.
+- arm,double-linefill-incr : Override double linefill on INCR read. Enable
+  if non-zero, disable if zero.
+- arm,double-linefill-wrap : Override double linefill on WRAP read. Enable
+  if non-zero, disable if zero.
+- arm,prefetch-drop : Override prefetch drop enable setting. Enable if non-zero,
+  disable if zero.
+- arm,prefetch-offset : Override prefetch offset value. Valid values are
+  0-7, 15, 23, and 31.
 
 Example:
 

arch/arm/Kconfig

@@ -29,6 +29,7 @@ config ARM
 	select HANDLE_DOMAIN_IRQ
 	select HARDIRQS_SW_RESEND
 	select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
+	select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
 	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
 	select HAVE_ARCH_KGDB
 	select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
@@ -60,6 +61,7 @@ config ARM
 	select HAVE_MEMBLOCK
 	select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
 	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
+	select HAVE_OPTPROBES if !THUMB2_KERNEL
 	select HAVE_PERF_EVENTS
 	select HAVE_PERF_REGS
 	select HAVE_PERF_USER_STACK_DUMP

arch/arm/Kconfig.debug

@@ -397,6 +397,13 @@ choice
 		  Say Y here if you want the debug print routines to direct
 		  their output to UART1 serial port on KEYSTONE2 devices.
 
+	config DEBUG_KS8695_UART
+		bool "KS8695 Debug UART"
+		depends on ARCH_KS8695
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  on KS8695.
+
 	config DEBUG_MESON_UARTAO
 		bool "Kernel low-level debugging via Meson6 UARTAO"
 		depends on ARCH_MESON
@@ -496,6 +503,13 @@ choice
 		  Say Y here if you want kernel low-level debugging support
 		  on Vybrid based platforms.
 
+	config DEBUG_NETX_UART
+		bool "Kernel low-level debugging messages via NetX UART"
+		depends on ARCH_NETX
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  on Hilscher NetX based platforms.
+
 	config DEBUG_NOMADIK_UART
 		bool "Kernel low-level debugging messages via NOMADIK UART"
 		depends on ARCH_NOMADIK
@@ -520,6 +534,30 @@ choice
 		  Say Y here if you want kernel low-level debugging support
 		  on TI-NSPIRE CX models.
 
+	config DEBUG_OMAP1UART1
+		bool "Kernel low-level debugging via OMAP1 UART1"
+		depends on ARCH_OMAP1
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  on OMAP1 based platforms (except OMAP730) on the UART1.
+
+	config DEBUG_OMAP1UART2
+		bool "Kernel low-level debugging via OMAP1 UART2"
+		depends on ARCH_OMAP1
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  on OMAP1 based platforms (except OMAP730) on the UART2.
+
+	config DEBUG_OMAP1UART3
+		bool "Kernel low-level debugging via OMAP1 UART3"
+		depends on ARCH_OMAP1
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  on OMAP1 based platforms (except OMAP730) on the UART3.
+
 	config DEBUG_OMAP2UART1
 		bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
 		depends on ARCH_OMAP2PLUS
@@ -562,6 +600,30 @@ choice
 		depends on ARCH_OMAP2PLUS
 		select DEBUG_OMAP2PLUS_UART
 
+	config DEBUG_OMAP7XXUART1
+		bool "Kernel low-level debugging via OMAP730 UART1"
+		depends on ARCH_OMAP730
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  on OMAP730 based platforms on the UART1.
+
+	config DEBUG_OMAP7XXUART2
+		bool "Kernel low-level debugging via OMAP730 UART2"
+		depends on ARCH_OMAP730
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  on OMAP730 based platforms on the UART2.
+
+	config DEBUG_OMAP7XXUART3
+		bool "Kernel low-level debugging via OMAP730 UART3"
+		depends on ARCH_OMAP730
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  on OMAP730 based platforms on the UART3.
+
 	config DEBUG_TI81XXUART1
 		bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
 		depends on ARCH_OMAP2PLUS
@@ -1031,15 +1093,6 @@ choice
 		  This option selects UART0 on VIA/Wondermedia System-on-a-chip
 		  devices, including VT8500, WM8505, WM8650 and WM8850.
 
-	config DEBUG_LL_UART_NONE
-		bool "No low-level debugging UART"
-		depends on !ARCH_MULTIPLATFORM
-		help
-		  Say Y here if your platform doesn't provide a UART option
-		  above. This relies on your platform choosing the right UART
-		  definition internally in order for low-level debugging to
-		  work.
-
 	config DEBUG_ICEDCC
 		bool "Kernel low-level debugging via EmbeddedICE DCC channel"
 		help
@@ -1183,7 +1236,9 @@ config DEBUG_LL_INCLUDE
 				 DEBUG_IMX6Q_UART || \
 				 DEBUG_IMX6SL_UART || \
 				 DEBUG_IMX6SX_UART
+	default "debug/ks8695.S" if DEBUG_KS8695_UART
 	default "debug/msm.S" if DEBUG_MSM_UART || DEBUG_QCOM_UARTDM
+	default "debug/netx.S" if DEBUG_NETX_UART
 	default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
 	default "debug/renesas-scif.S" if DEBUG_R7S72100_SCIF2
 	default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF0
@@ -1208,12 +1263,7 @@ config DEBUG_LL_INCLUDE
 
 # Compatibility options for PL01x
 config DEBUG_UART_PL01X
-	def_bool ARCH_EP93XX || \
-		ARCH_INTEGRATOR || \
-		ARCH_SPEAR3XX || \
-		ARCH_SPEAR6XX || \
-		ARCH_SPEAR13XX || \
-		ARCH_VERSATILE
+	bool
 
 # Compatibility options for 8250
 config DEBUG_UART_8250
@@ -1229,6 +1279,7 @@ config DEBUG_UART_BCM63XX
 
 config DEBUG_UART_PHYS
 	hex "Physical base address of debug UART"
+	default 0x00100a00 if DEBUG_NETX_UART
 	default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0
 	default 0x01c28000 if DEBUG_SUNXI_UART0
 	default 0x01c28400 if DEBUG_SUNXI_UART1
@@ -1269,7 +1320,6 @@ config DEBUG_UART_PHYS
 				DEBUG_S3C2410_UART2)
 	default 0x78000000 if DEBUG_CNS3XXX
 	default 0x7c0003f8 if FOOTBRIDGE
-	default 0x78000000 if DEBUG_CNS3XXX
 	default 0x80010000 if DEBUG_ASM9260_UART
 	default 0x80070000 if DEBUG_IMX23_UART
 	default 0x80074000 if DEBUG_IMX28_UART
@@ -1310,12 +1360,17 @@ config DEBUG_UART_PHYS
 	default 0xffe40000 if DEBUG_RCAR_GEN1_SCIF0
 	default 0xffe42000 if DEBUG_RCAR_GEN1_SCIF2
 	default 0xfff36000 if DEBUG_HIGHBANK_UART
+	default 0xfffb0000 if DEBUG_OMAP1UART1 || DEBUG_OMAP7XXUART1
+	default 0xfffb0800 if DEBUG_OMAP1UART2 || DEBUG_OMAP7XXUART2
+	default 0xfffb9800 if DEBUG_OMAP1UART3 || DEBUG_OMAP7XXUART3
 	default 0xfffe8600 if DEBUG_UART_BCM63XX
 	default 0xfffff700 if ARCH_IOP33X
-	depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
+	depends on ARCH_EP93XX || \
+	        DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
 		DEBUG_LL_UART_EFM32 || \
 		DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
-		DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_R7S72100_SCIF2 || \
+		DEBUG_MSM_UART || DEBUG_NETX_UART || \
+		DEBUG_QCOM_UARTDM || DEBUG_R7S72100_SCIF2 || \
 		DEBUG_RCAR_GEN1_SCIF0 || DEBUG_RCAR_GEN1_SCIF2 || \
 		DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF2 || \
 		DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \
@@ -1324,6 +1379,7 @@ config DEBUG_UART_PHYS
 
 config DEBUG_UART_VIRT
 	hex "Virtual base address of debug UART"
+	default 0xe0000a00 if DEBUG_NETX_UART
 	default 0xe0010fe0 if ARCH_RPC
 	default 0xe1000000 if DEBUG_MSM_UART
 	default 0xf0000be0 if ARCH_EBSA110
@@ -1392,18 +1448,23 @@ config DEBUG_UART_VIRT
 	default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
 	default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
 	default 0xfef36000 if DEBUG_HIGHBANK_UART
+	default 0xfefb0000 if DEBUG_OMAP1UART1 || DEBUG_OMAP7XXUART1
+	default 0xfefb0800 if DEBUG_OMAP1UART2 || DEBUG_OMAP7XXUART2
+	default 0xfefb9800 if DEBUG_OMAP1UART3 || DEBUG_OMAP7XXUART3
 	default 0xfefff700 if ARCH_IOP33X
 	default 0xff003000 if DEBUG_U300_UART
 	default DEBUG_UART_PHYS if !MMU
 	depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
 		DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
-		DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \
+		DEBUG_MSM_UART || DEBUG_NETX_UART || \
+		DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \
 		DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART
 
 config DEBUG_UART_8250_SHIFT
 	int "Register offset shift for the 8250 debug UART"
 	depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
-	default 0 if FOOTBRIDGE || ARCH_IOP32X || DEBUG_BCM_5301X
+	default 0 if FOOTBRIDGE || ARCH_IOP32X || DEBUG_BCM_5301X || \
+		DEBUG_OMAP7XXUART1 || DEBUG_OMAP7XXUART2 || DEBUG_OMAP7XXUART3
 	default 2
 
 config DEBUG_UART_8250_WORD

arch/arm/Makefile

@@ -266,6 +266,7 @@ core-$(CONFIG_KVM_ARM_HOST) 	+= arch/arm/kvm/
 
 # If we have a machine-specific directory, then include it in the build.
 core-y				+= arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
+core-y				+= arch/arm/probes/
 core-y				+= arch/arm/net/
 core-y				+= arch/arm/crypto/
 core-y				+= arch/arm/firmware/

arch/arm/boot/compressed/head.S

@@ -178,7 +178,7 @@ not_angel:
 
 		/*
 		 * Set up a page table only if it won't overwrite ourself.
-		 * That means r4 < pc && r4 - 16k page directory > &_end.
+		 * That means r4 < pc || r4 - 16k page directory > &_end.
 		 * Given that r4 > &_end is most unfrequent, we add a rough
 		 * additional 1MB of room for a possible appended DTB.
 		 */

arch/arm/boot/dts/exynos4210.dtsi

@@ -81,6 +81,15 @@
 		reg = <0x10023CA0 0x20>;
 	};
 
+	l2c: l2-cache-controller@10502000 {
+		compatible = "arm,pl310-cache";
+		reg = <0x10502000 0x1000>;
+		cache-unified;
+		cache-level = <2>;
+		arm,tag-latency = <2 2 1>;
+		arm,data-latency = <2 2 1>;
+	};
+
 	gic: interrupt-controller@10490000 {
 		cpu-offset = <0x8000>;
 	};

arch/arm/boot/dts/exynos4x12.dtsi

@@ -54,6 +54,20 @@
 		reg = <0x10023CA0 0x20>;
 	};
 
+	l2c: l2-cache-controller@10502000 {
+		compatible = "arm,pl310-cache";
+		reg = <0x10502000 0x1000>;
+		cache-unified;
+		cache-level = <2>;
+		arm,tag-latency = <2 2 1>;
+		arm,data-latency = <3 2 1>;
+		arm,double-linefill = <1>;
+		arm,double-linefill-incr = <0>;
+		arm,double-linefill-wrap = <1>;
+		arm,prefetch-drop = <1>;
+		arm,prefetch-offset = <7>;
+	};
+
 	clock: clock-controller@10030000 {
 		compatible = "samsung,exynos4412-clock";
 		reg = <0x10030000 0x20000>;

arch/arm/configs/iop32x_defconfig

@@ -106,6 +106,7 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_DEBUG_KERNEL=y
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
+CONFIG_DEBUG_LL_UART_8250=y
 CONFIG_KEYS=y
 CONFIG_KEYS_DEBUG_PROC_KEYS=y
 CONFIG_CRYPTO_NULL=y

arch/arm/configs/iop33x_defconfig

@@ -87,5 +87,6 @@ CONFIG_DEBUG_KERNEL=y
 # CONFIG_RCU_CPU_STALL_DETECTOR is not set
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
+CONFIG_DEBUG_LL_UART_8250=y
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRC32 is not set

arch/arm/configs/ixp4xx_defconfig

@@ -202,3 +202,4 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_DEBUG_KERNEL=y
 CONFIG_DEBUG_ERRORS=y
 CONFIG_DEBUG_LL=y
+CONFIG_DEBUG_LL_UART_8250=y

arch/arm/configs/lpc32xx_defconfig

@@ -204,6 +204,7 @@ CONFIG_DEBUG_INFO=y
 # CONFIG_FTRACE is not set
 # CONFIG_ARM_UNWIND is not set
 CONFIG_DEBUG_LL=y
+CONFIG_DEBUG_LL_UART_8250=y
 CONFIG_EARLY_PRINTK=y
 CONFIG_CRYPTO_ANSI_CPRNG=y
 # CONFIG_CRYPTO_HW is not set

arch/arm/configs/mv78xx0_defconfig

@@ -132,6 +132,7 @@ CONFIG_SYSCTL_SYSCALL_CHECK=y
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_ERRORS=y
 CONFIG_DEBUG_LL=y
+CONFIG_DEBUG_LL_UART_8250=y
 CONFIG_CRYPTO_CBC=m
 CONFIG_CRYPTO_ECB=m
 CONFIG_CRYPTO_PCBC=m

arch/arm/configs/orion5x_defconfig

@@ -156,6 +156,7 @@ CONFIG_LATENCYTOP=y
 # CONFIG_FTRACE is not set
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
+CONFIG_DEBUG_LL_UART_8250=y
 CONFIG_CRYPTO_CBC=m
 CONFIG_CRYPTO_ECB=m
 CONFIG_CRYPTO_PCBC=m

arch/arm/configs/rpc_defconfig

@@ -131,3 +131,4 @@ CONFIG_DEBUG_KERNEL=y
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_ERRORS=y
 CONFIG_DEBUG_LL=y
+CONFIG_DEBUG_LL_UART_8250=y

arch/arm/include/asm/bitrev.h

@@ -0,0 +1,20 @@
+#ifndef __ASM_BITREV_H
+#define __ASM_BITREV_H
+
+static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)
+{
+	__asm__ ("rbit %0, %1" : "=r" (x) : "r" (x));
+	return x;
+}
+
+static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x)
+{
+	return __arch_bitrev32((u32)x) >> 16;
+}
+
+static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x)
+{
+	return __arch_bitrev32((u32)x) >> 24;
+}
+
+#endif