Merge master.kernel.org:/home/rmk/linux-2.6-arm

111 files changed, 774 insertions, 223 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3cfd82a05b2..5959e36c3b4 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -180,6 +180,7 @@ config ARCH_OMAP
 config ARCH_VERSATILE
 	bool "Versatile"
 	select ARM_AMBA
+	select ARM_VIC
 	select ICST307
 	help
 	  This enables support for ARM Ltd Versatile board.
@@ -400,6 +401,38 @@ config NO_IDLE_HZ
 	  Currently at least OMAP, PXA2xx and SA11x0 platforms are known
 	  to have accurate timekeeping with dynamic tick.
 
+config AEABI
+	bool "Use the ARM EABI to compile the kernel"
+	help
+	  This option allows for the kernel to be compiled using the latest
+	  ARM ABI (aka EABI).  This is only useful if you are using a user
+	  space environment that is also compiled with EABI.
+
+	  Since there are major incompatibilities between the legacy ABI and
+	  EABI, especially with regard to structure member alignment, this
+	  option also changes the kernel syscall calling convention to
+	  disambiguate both ABIs and allow for backward compatibility support
+	  (selected with CONFIG_OABI_COMPAT).
+
+	  To use this you need GCC version 4.0.0 or later.
+
+config OABI_COMPAT
+	bool "Allow old ABI binaries to run with this kernel"
+	depends on AEABI
+	default y
+	help
+	  This option preserves the old syscall interface along with the
+	  new (ARM EABI) one. It also provides a compatibility layer to
+	  intercept syscalls that have structure arguments which layout
+	  in memory differs between the legacy ABI and the new ARM EABI
+	  (only for non "thumb" binaries). This option adds a tiny
+	  overhead to all syscalls and produces a slightly larger kernel.
+	  If you know you'll be using only pure EABI user space then you
+	  can say N here. If this option is not selected and you attempt
+	  to execute a legacy ABI binary then the result will be
+	  UNPREDICTABLE (in fact it can be predicted that it won't work
+	  at all). If in doubt say Y.
+
 config ARCH_DISCONTIGMEM_ENABLE
 	bool
 	default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
@@ -586,6 +619,7 @@ comment "At least one emulation must be selected"
 
 config FPE_NWFPE
 	bool "NWFPE math emulation"
+	depends on !AEABI || OABI_COMPAT
 	---help---
 	  Say Y to include the NWFPE floating point emulator in the kernel.
 	  This is necessary to run most binaries. Linux does not currently
@@ -609,7 +643,7 @@ config FPE_NWFPE_XP
 
 config FPE_FASTFPE
 	bool "FastFPE math emulation (EXPERIMENTAL)"
-	depends on !CPU_32v3 && EXPERIMENTAL
+	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
 	---help---
 	  Say Y here to include the FAST floating point emulator in the kernel.
 	  This is an experimental much faster emulator which now also has full
@@ -641,6 +675,7 @@ source "fs/Kconfig.binfmt"
 
 config ARTHUR
 	tristate "RISC OS personality"
+	depends on !AEABI
 	help
 	  Say Y here to include the kernel code necessary if you want to run
 	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 1fa2a101158..fbfc14a56b9 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -56,8 +56,13 @@ tune-$(CONFIG_CPU_SA1100)	:=-mtune=strongarm1100
 tune-$(CONFIG_CPU_XSCALE)	:=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
 tune-$(CONFIG_CPU_V6)		:=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
 
-# Need -Uarm for gcc < 3.x
+ifeq ($(CONFIG_AEABI),y)
+CFLAGS_ABI	:=-mabi=aapcs -mno-thumb-interwork
+else
 CFLAGS_ABI	:=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
+endif
+
+# Need -Uarm for gcc < 3.x
 CFLAGS		+=$(CFLAGS_ABI) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
 AFLAGS		+=$(CFLAGS_ABI) $(arch-y) $(tune-y) -msoft-float
 
diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig
index d7509c7a3c5..5e34ca6d38b 100644
--- a/arch/arm/common/Kconfig
+++ b/arch/arm/common/Kconfig
@@ -1,7 +1,10 @@
-config ICST525
+config ARM_GIC
 	bool
 
-config ARM_GIC
+config ARM_VIC
+	bool
+
+config ICST525
 	bool
 
 config ICST307
diff --git a/arch/arm/common/Makefile b/arch/arm/common/Makefile
index ec8d17c9690..c81a2ff6b5b 100644
--- a/arch/arm/common/Makefile
+++ b/arch/arm/common/Makefile
@@ -4,6 +4,7 @@
 
 obj-y				+= rtctime.o
 obj-$(CONFIG_ARM_GIC)		+= gic.o
+obj-$(CONFIG_ARM_VIC)		+= vic.o
 obj-$(CONFIG_ICST525)		+= icst525.o
 obj-$(CONFIG_ICST307)		+= icst307.o
 obj-$(CONFIG_SA1111)		+= sa1111.o
diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c
new file mode 100644
index 00000000000..a45ed1687a5
--- /dev/null
+++ b/arch/arm/common/vic.c
@@ -0,0 +1,92 @@
+/*
+ *  linux/arch/arm/common/vic.c
+ *
+ *  Copyright (C) 1999 - 2003 ARM Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/init.h>
+#include <linux/list.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mach/irq.h>
+#include <asm/hardware/vic.h>
+
+static void __iomem *vic_base;
+
+static void vic_mask_irq(unsigned int irq)
+{
+	irq -= IRQ_VIC_START;
+	writel(1 << irq, vic_base + VIC_INT_ENABLE_CLEAR);
+}
+
+static void vic_unmask_irq(unsigned int irq)
+{
+	irq -= IRQ_VIC_START;
+	writel(1 << irq, vic_base + VIC_INT_ENABLE);
+}
+
+static struct irqchip vic_chip = {
+	.ack	= vic_mask_irq,
+	.mask	= vic_mask_irq,
+	.unmask	= vic_unmask_irq,
+};
+
+void __init vic_init(void __iomem *base, u32 vic_sources)
+{
+	unsigned int i;
+
+	vic_base = base;
+
+	/* Disable all interrupts initially. */
+
+	writel(0, vic_base + VIC_INT_SELECT);
+	writel(0, vic_base + VIC_INT_ENABLE);
+	writel(~0, vic_base + VIC_INT_ENABLE_CLEAR);