arm64: Build infrastructure
Catalin Marinas [Fri, 20 Apr 2012 13:45:54 +0000 (14:45 +0100)]
This patch adds Makefile and Kconfig files required for building an
AArch64 kernel.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

14 files changed:
arch/arm64/Kconfig [new file with mode: 0644]
arch/arm64/Kconfig.debug [new file with mode: 0644]
arch/arm64/Makefile [new file with mode: 0644]
arch/arm64/boot/.gitignore [new file with mode: 0644]
arch/arm64/boot/Makefile [new file with mode: 0644]
arch/arm64/boot/install.sh [new file with mode: 0644]
arch/arm64/configs/defconfig [new file with mode: 0644]
arch/arm64/include/asm/prom.h [new file with mode: 0644]
arch/arm64/kernel/.gitignore [new file with mode: 0644]
arch/arm64/kernel/Makefile [new file with mode: 0644]
arch/arm64/kernel/vmlinux.lds.S [new file with mode: 0644]
arch/arm64/mm/Makefile [new file with mode: 0644]
init/Kconfig
lib/Kconfig.debug

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
new file mode 100644 (file)
index 0000000..767ba56
--- /dev/null
@@ -0,0 +1,222 @@
+config ARM64
+       def_bool y
+       select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
+       select GENERIC_CLOCKEVENTS
+       select GENERIC_HARDIRQS_NO_DEPRECATED
+       select GENERIC_IOMAP
+       select GENERIC_IRQ_PROBE
+       select GENERIC_IRQ_SHOW
+       select GENERIC_SMP_IDLE_THREAD
+       select GENERIC_TIME_VSYSCALL
+       select HARDIRQS_SW_RESEND
+       select HAVE_ARCH_TRACEHOOK
+       select HAVE_DMA_API_DEBUG
+       select HAVE_DMA_ATTRS
+       select HAVE_GENERIC_DMA_COHERENT
+       select HAVE_GENERIC_HARDIRQS
+       select HAVE_HW_BREAKPOINT if PERF_EVENTS
+       select HAVE_IRQ_WORK
+       select HAVE_MEMBLOCK
+       select HAVE_PERF_EVENTS
+       select HAVE_SPARSE_IRQ
+       select IRQ_DOMAIN
+       select NO_BOOTMEM
+       select OF
+       select OF_EARLY_FLATTREE
+       select PERF_USE_VMALLOC
+       select RTC_LIB
+       select SPARSE_IRQ
+       help
+         ARM 64-bit (AArch64) Linux support.
+
+config 64BIT
+       def_bool y
+
+config ARCH_PHYS_ADDR_T_64BIT
+       def_bool y
+
+config MMU
+       def_bool y
+
+config NO_IOPORT
+       def_bool y
+
+config STACKTRACE_SUPPORT
+       def_bool y
+
+config LOCKDEP_SUPPORT
+       def_bool y
+
+config TRACE_IRQFLAGS_SUPPORT
+       def_bool y
+
+config GENERIC_LOCKBREAK
+       def_bool y
+       depends on SMP && PREEMPT
+
+config RWSEM_GENERIC_SPINLOCK
+       def_bool y
+
+config GENERIC_HWEIGHT
+       def_bool y
+
+config GENERIC_CSUM
+        def_bool y
+
+config GENERIC_CALIBRATE_DELAY
+       def_bool y
+
+config ZONE_DMA32
+       def_bool y
+
+config ARCH_DMA_ADDR_T_64BIT
+       def_bool y
+
+config NEED_DMA_MAP_STATE
+       def_bool y
+
+config NEED_SG_DMA_LENGTH
+       def_bool y
+
+config SWIOTLB
+       def_bool y
+
+config IOMMU_HELPER
+       def_bool SWIOTLB
+
+source "init/Kconfig"
+
+source "kernel/Kconfig.freezer"
+
+menu "System Type"
+
+endmenu
+
+menu "Bus support"
+
+config ARM_AMBA
+       bool
+
+endmenu
+
+menu "Kernel Features"
+
+source "kernel/time/Kconfig"
+
+config ARM64_64K_PAGES
+       bool "Enable 64KB pages support"
+       help
+         This feature enables 64KB pages support (4KB by default)
+         allowing only two levels of page tables and faster TLB
+         look-up. AArch32 emulation is not available when this feature
+         is enabled.
+
+config SMP
+       bool "Symmetric Multi-Processing"
+       select USE_GENERIC_SMP_HELPERS
+       help
+         This enables support for systems with more than one CPU.  If
+         you say N here, the kernel will run on single and
+         multiprocessor machines, but will use only one CPU of a
+         multiprocessor machine. If you say Y here, the kernel will run
+         on many, but not all, single processor machines. On a single
+         processor machine, the kernel will run faster if you say N
+         here.
+
+         If you don't know what to do here, say N.
+
+config NR_CPUS
+       int "Maximum number of CPUs (2-32)"
+       range 2 32
+       depends on SMP
+       default "4"
+
+source kernel/Kconfig.preempt
+
+config HZ
+       int
+       default 100
+
+config ARCH_HAS_HOLES_MEMORYMODEL
+       def_bool y if SPARSEMEM
+
+config ARCH_SPARSEMEM_ENABLE
+       def_bool y
+       select SPARSEMEM_VMEMMAP_ENABLE
+
+config ARCH_SPARSEMEM_DEFAULT
+       def_bool ARCH_SPARSEMEM_ENABLE
+
+config ARCH_SELECT_MEMORY_MODEL
+       def_bool ARCH_SPARSEMEM_ENABLE
+
+config HAVE_ARCH_PFN_VALID
+       def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
+
+config HW_PERF_EVENTS
+       bool "Enable hardware performance counter support for perf events"
+       depends on PERF_EVENTS
+       default y
+       help
+         Enable hardware performance counter support for perf events. If
+         disabled, perf events will use software events only.
+
+source "mm/Kconfig"
+
+endmenu
+
+menu "Boot options"
+
+config CMDLINE
+       string "Default kernel command string"
+       default ""
+       help
+         Provide a set of default command-line options at build time by
+         entering them here. As a minimum, you should specify the the
+         root device (e.g. root=/dev/nfs).
+
+config CMDLINE_FORCE
+       bool "Always use the default kernel command string"
+       help
+         Always use the default kernel command string, even if the boot
+         loader passes other arguments to the kernel.
+         This is useful if you cannot or don't want to change the
+         command-line options your boot loader passes to the kernel.
+
+endmenu
+
+menu "Userspace binary formats"
+
+source "fs/Kconfig.binfmt"
+
+config COMPAT
+       bool "Kernel support for 32-bit EL0"
+       depends on !ARM64_64K_PAGES
+       select COMPAT_BINFMT_ELF
+       help
+         This option enables support for a 32-bit EL0 running under a 64-bit
+         kernel at EL1. AArch32-specific components such as system calls,
+         the user helper functions, VFP support and the ptrace interface are
+         handled appropriately by the kernel.
+
+         If you want to execute 32-bit userspace applications, say Y.
+
+config SYSVIPC_COMPAT
+       def_bool y
+       depends on COMPAT && SYSVIPC
+
+endmenu
+
+source "net/Kconfig"
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/arm64/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
diff --git a/arch/arm64/Kconfig.debug b/arch/arm64/Kconfig.debug
new file mode 100644 (file)
index 0000000..d7553f2
--- /dev/null
@@ -0,0 +1,27 @@
+menu "Kernel hacking"
+
+source "lib/Kconfig.debug"
+
+config FRAME_POINTER
+       bool
+       default y
+
+config DEBUG_ERRORS
+       bool "Verbose kernel error messages"
+       depends on DEBUG_KERNEL
+       help
+         This option controls verbose debugging information which can be
+         printed when the kernel detects an internal error. This debugging
+         information is useful to kernel hackers when tracking down problems,
+         but mostly meaningless to other people. It's safe to say Y unless
+         you are concerned with the code size or don't want to see these
+         messages.
+
+config DEBUG_STACK_USAGE
+       bool "Enable stack utilization instrumentation"
+       depends on DEBUG_KERNEL
+       help
+         Enables the display of the minimum amount of free stack which each
+         task has ever had available in the sysrq-T output.
+
+endmenu
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
new file mode 100644 (file)
index 0000000..364191f
--- /dev/null
@@ -0,0 +1,71 @@
+#
+# arch/arm64/Makefile
+#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 1995-2001 by Russell King
+
+LDFLAGS_vmlinux        :=-p --no-undefined -X
+CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
+OBJCOPYFLAGS   :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
+GZFLAGS                :=-9
+
+LIBGCC                 := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
+
+KBUILD_DEFCONFIG := defconfig
+
+KBUILD_CFLAGS  += -mgeneral-regs-only
+KBUILD_CPPFLAGS        += -mlittle-endian
+AS             += -EL
+LD             += -EL
+
+comma = ,
+
+CHECKFLAGS     += -D__aarch64__
+
+# Default value
+head-y         := arch/arm64/kernel/head.o
+
+# The byte offset of the kernel image in RAM from the start of RAM.
+TEXT_OFFSET := 0x00080000
+
+export TEXT_OFFSET GZFLAGS
+
+core-y         += arch/arm64/kernel/ arch/arm64/mm/
+libs-y         := arch/arm64/lib/ $(libs-y)
+libs-y         += $(LIBGCC)
+
+# Default target when executing plain make
+KBUILD_IMAGE := Image.gz
+
+all:   $(KBUILD_IMAGE)
+
+boot := arch/arm64/boot
+
+Image Image.gz: vmlinux
+       $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+
+zinstall install: vmlinux
+       $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
+
+%.dtb:
+       $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+
+# We use MRPROPER_FILES and CLEAN_FILES now
+archclean:
+       $(Q)$(MAKE) $(clean)=$(boot)
+
+define archhelp
+  echo  '* Image.gz      - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
+  echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
+  echo  '  install       - Install uncompressed kernel'
+  echo  '  zinstall      - Install compressed kernel'
+  echo  '                  Install using (your) ~/bin/installkernel or'
+  echo  '                  (distribution) /sbin/installkernel or'
+  echo  '                  install to $$(INSTALL_PATH) and run lilo'
+endef
diff --git a/arch/arm64/boot/.gitignore b/arch/arm64/boot/.gitignore
new file mode 100644 (file)
index 0000000..8dab0bb
--- /dev/null
@@ -0,0 +1,2 @@
+Image
+Image.gz
diff --git a/arch/arm64/boot/Makefile b/arch/arm64/boot/Makefile
new file mode 100644 (file)
index 0000000..eca209b
--- /dev/null
@@ -0,0 +1,36 @@
+#
+# arch/arm64/boot/Makefile
+#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 2012, ARM Ltd.
+# Author: Will Deacon <will.deacon@arm.com>
+#
+# Based on the ia64 boot/Makefile.
+#
+
+targets := Image Image.gz
+
+$(obj)/Image: vmlinux FORCE
+       $(call if_changed,objcopy)
+
+$(obj)/Image.gz: $(obj)/Image FORCE
+       $(call if_changed,gzip)
+
+$(obj)/%.dtb: $(src)/dts/%.dts
+       $(call cmd,dtc)
+
+install: $(obj)/Image
+       $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
+       $(obj)/Image System.map "$(INSTALL_PATH)"
+
+zinstall: $(obj)/Image.gz
+       $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
+       $(obj)/Image.gz System.map "$(INSTALL_PATH)"
+
+clean-files += *.dtb
diff --git a/arch/arm64/boot/install.sh b/arch/arm64/boot/install.sh
new file mode 100644 (file)
index 0000000..12ed78a
--- /dev/null
@@ -0,0 +1,46 @@
+#!/bin/sh
+#
+# arch/arm64/boot/install.sh
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 1995 by Linus Torvalds
+#
+# Adapted from code in arch/i386/boot/Makefile by H. Peter Anvin
+# Adapted from code in arch/i386/boot/install.sh by Russell King
+#
+# "make install" script for the AArch64 Linux port
+#
+# Arguments:
+#   $1 - kernel version
+#   $2 - kernel image file
+#   $3 - kernel map file
+#   $4 - default install path (blank if root directory)
+#
+
+# User may have a custom install script
+if [ -x ~/bin/${INSTALLKERNEL} ]; then exec ~/bin/${INSTALLKERNEL} "$@"; fi
+if [ -x /sbin/${INSTALLKERNEL} ]; then exec /sbin/${INSTALLKERNEL} "$@"; fi
+
+if [ "$(basename $2)" = "Image.gz" ]; then
+# Compressed install
+  echo "Installing compressed kernel"
+  base=vmlinuz
+else
+# Normal install
+  echo "Installing normal kernel"
+  base=vmlinux
+fi
+
+if [ -f $4/$base-$1 ]; then
+  mv $4/$base-$1 $4/$base-$1.old
+fi
+cat $2 > $4/$base-$1
+
+# Install system map file
+if [ -f $4/System.map-$1 ]; then
+  mv $4/System.map-$1 $4/System.map-$1.old
+fi
+cp $3 $4/System.map-$1
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
new file mode 100644 (file)
index 0000000..9212c78
--- /dev/null
@@ -0,0 +1,85 @@
+CONFIG_EXPERIMENTAL=y
+# CONFIG_LOCALVERSION_AUTO is not set
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_UTS_NS is not set
+# CONFIG_IPC_NS is not set
+# CONFIG_PID_NS is not set
+# CONFIG_NET_NS is not set
+CONFIG_SCHED_AUTOGROUP=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_KALLSYMS_ALL=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_PROFILING=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_IOSCHED_DEADLINE is not set
+CONFIG_SMP=y
+CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_CMDLINE="console=ttyAMA0"
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+CONFIG_COMPAT=y
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+# CONFIG_INET_LRO is not set
+# CONFIG_IPV6 is not set
+# CONFIG_WIRELESS is not set
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_DEVTMPFS=y
+# CONFIG_BLK_DEV is not set
+CONFIG_SCSI=y
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_BLK_DEV_SD=y
+# CONFIG_SCSI_LOWLEVEL is not set
+CONFIG_NETDEVICES=y
+CONFIG_MII=y
+# CONFIG_WLAN is not set
+CONFIG_INPUT_EVDEV=y
+# CONFIG_SERIO_I8042 is not set
+# CONFIG_SERIO_SERPORT is not set
+CONFIG_LEGACY_PTY_COUNT=16
+# CONFIG_HW_RANDOM is not set
+# CONFIG_HWMON is not set
+CONFIG_FB=y
+# CONFIG_VGA_CONSOLE is not set
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_LOGO=y
+# CONFIG_LOGO_LINUX_MONO is not set
+# CONFIG_LOGO_LINUX_VGA16 is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_EXT2_FS=y
+CONFIG_EXT3_FS=y
+# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
+# CONFIG_EXT3_FS_XATTR is not set
+CONFIG_FUSE_FS=y
+CONFIG_CUSE=y
+CONFIG_VFAT_FS=y
+CONFIG_TMPFS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NFS_FS=y
+CONFIG_ROOT_NFS=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_FS=y
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_SCHED_DEBUG is not set
+CONFIG_DEBUG_INFO=y
+# CONFIG_FTRACE is not set
+CONFIG_ATOMIC64_SELFTEST=y
+CONFIG_DEBUG_ERRORS=y
diff --git a/arch/arm64/include/asm/prom.h b/arch/arm64/include/asm/prom.h
new file mode 100644 (file)
index 0000000..68b90e6
--- /dev/null
@@ -0,0 +1 @@
+/* Empty for now */
diff --git a/arch/arm64/kernel/.gitignore b/arch/arm64/kernel/.gitignore
new file mode 100644 (file)
index 0000000..c5f676c
--- /dev/null
@@ -0,0 +1 @@
+vmlinux.lds
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
new file mode 100644 (file)
index 0000000..e2caff1
--- /dev/null
@@ -0,0 +1,27 @@
+#
+# Makefile for the linux kernel.
+#
+
+CPPFLAGS_vmlinux.lds   := -DTEXT_OFFSET=$(TEXT_OFFSET)
+AFLAGS_head.o          := -DTEXT_OFFSET=$(TEXT_OFFSET)
+
+# Object file lists.
+arm64-obj-y            := cputable.o debug-monitors.o entry.o irq.o fpsimd.o   \
+                          entry-fpsimd.o process.o ptrace.o setup.o signal.o   \
+                          sys.o stacktrace.o time.o traps.o io.o vdso.o
+
+arm64-obj-$(CONFIG_COMPAT)             += sys32.o kuser32.o signal32.o         \
+                                          sys_compat.o
+arm64-obj-$(CONFIG_MODULES)            += arm64ksyms.o module.o
+arm64-obj-$(CONFIG_SMP)                        += smp.o
+arm64-obj-$(CONFIG_HW_PERF_EVENTS)     += perf_event.o
+arm64-obj-$(CONFIG_HAVE_HW_BREAKPOINT)+= hw_breakpoint.o
+
+obj-y                                  += $(arm64-obj-y) vdso/
+obj-m                                  += $(arm64-obj-m)
+head-y                                 := head.o
+extra-y                                        := $(head-y) vmlinux.lds
+
+# vDSO - this must be built first to generate the symbol offsets
+$(call objectify,$(arm64-obj-y)): $(obj)/vdso/vdso-offsets.h
+$(obj)/vdso/vdso-offsets.h: $(obj)/vdso
diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
new file mode 100644 (file)
index 0000000..3fae2be
--- /dev/null
@@ -0,0 +1,126 @@
+/*
+ * ld script to make ARM Linux kernel
+ * taken from the i386 version by Russell King
+ * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
+ */
+
+#include <asm-generic/vmlinux.lds.h>
+#include <asm/thread_info.h>
+#include <asm/memory.h>
+#include <asm/page.h>
+
+#define ARM_EXIT_KEEP(x)
+#define ARM_EXIT_DISCARD(x)    x
+
+OUTPUT_ARCH(aarch64)
+ENTRY(stext)
+
+jiffies = jiffies_64;
+
+SECTIONS
+{
+       /*
+        * XXX: The linker does not define how output sections are
+        * assigned to input sections when there are multiple statements
+        * matching the same input section name.  There is no documented
+        * order of matching.
+        */
+       /DISCARD/ : {
+               ARM_EXIT_DISCARD(EXIT_TEXT)
+               ARM_EXIT_DISCARD(EXIT_DATA)
+               EXIT_CALL
+               *(.discard)
+               *(.discard.*)
+       }
+
+       . = PAGE_OFFSET + TEXT_OFFSET;
+
+       .head.text : {
+               _text = .;
+               HEAD_TEXT
+       }
+       .text : {                       /* Real text segment            */
+               _stext = .;             /* Text and read-only data      */
+                       *(.smp.pen.text)
+                       __exception_text_start = .;
+                       *(.exception.text)
+                       __exception_text_end = .;
+                       IRQENTRY_TEXT
+                       TEXT_TEXT
+                       SCHED_TEXT
+                       LOCK_TEXT
+                       *(.fixup)
+                       *(.gnu.warning)
+               . = ALIGN(16);
+               *(.got)                 /* Global offset table          */
+       }
+
+       RO_DATA(PAGE_SIZE)
+
+       _etext = .;                     /* End of text and rodata section */
+
+       . = ALIGN(PAGE_SIZE);
+       __init_begin = .;
+
+       INIT_TEXT_SECTION(8)
+       .exit.text : {
+               ARM_EXIT_KEEP(EXIT_TEXT)
+       }
+       . = ALIGN(16);
+       .init.data : {
+               INIT_DATA
+               INIT_SETUP(16)
+               INIT_CALLS
+               CON_INITCALL
+               SECURITY_INITCALL
+               INIT_RAM_FS
+       }
+       .exit.data : {
+               ARM_EXIT_KEEP(EXIT_DATA)
+       }
+
+       PERCPU_SECTION(64)
+
+       __init_end = .;
+       . = ALIGN(THREAD_SIZE);
+       __data_loc = .;
+
+       .data : AT(__data_loc) {
+               _data = .;              /* address in memory */
+               _sdata = .;
+
+               /*
+                * first, the init task union, aligned
+                * to an 8192 byte boundary.
+                */
+               INIT_TASK_DATA(THREAD_SIZE)
+               NOSAVE_DATA
+               CACHELINE_ALIGNED_DATA(64)
+               READ_MOSTLY_DATA(64)
+
+               /*
+                * The exception fixup table (might need resorting at runtime)
+                */
+               . = ALIGN(32);
+               __start___ex_table = .;
+               *(__ex_table)
+               __stop___ex_table = .;
+
+               /*
+                * and the usual data section
+                */
+               DATA_DATA
+               CONSTRUCTORS
+
+               _edata = .;
+       }
+       _edata_loc = __data_loc + SIZEOF(.data);
+
+       NOTES
+
+       BSS_SECTION(0, 0, 0)
+       _end = .;
+
+       STABS_DEBUG
+       .comment 0 : { *(.comment) }
+}
diff --git a/arch/arm64/mm/Makefile b/arch/arm64/mm/Makefile
new file mode 100644 (file)
index 0000000..3140a2a
--- /dev/null
@@ -0,0 +1,4 @@
+obj-y                          := dma-mapping.o extable.o fault.o init.o \
+                                  cache.o copypage.o flush.o \
+                                  ioremap.o mmap.o pgd.o mmu.o \
+                                  context.o tlb.o proc.o
index af6c7f8..8bfda46 100644 (file)
@@ -1153,7 +1153,8 @@ menuconfig EXPERT
 
 config UID16
        bool "Enable 16-bit UID system calls" if EXPERT
-       depends on ARM || BLACKFIN || CRIS || FRV || H8300 || X86_32 || M68K || (S390 && !64BIT) || SUPERH || SPARC32 || (SPARC64 && COMPAT) || UML || (X86_64 && IA32_EMULATION)
+       depends on ARM || BLACKFIN || CRIS || FRV || H8300 || X86_32 || M68K || (S390 && !64BIT) || SUPERH || SPARC32 || (SPARC64 && COMPAT) || UML || (X86_64 && IA32_EMULATION) \
+               || AARCH32_EMULATION
        default y
        help
          This enables the legacy 16-bit UID syscall wrappers.
index 2403a63..cfb4578 100644 (file)
@@ -452,7 +452,8 @@ config SLUB_STATS
 config DEBUG_KMEMLEAK
        bool "Kernel memory leak detector"
        depends on DEBUG_KERNEL && EXPERIMENTAL && \
-               (X86 || ARM || PPC || MIPS || S390 || SPARC64 || SUPERH || MICROBLAZE || TILE)
+               (X86 || ARM || PPC || MIPS || S390 || SPARC64 || SUPERH || \
+                MICROBLAZE || TILE || ARM64)
 
        select DEBUG_FS
        select STACKTRACE if STACKTRACE_SUPPORT
@@ -739,7 +740,8 @@ config DEBUG_BUGVERBOSE
        bool "Verbose BUG() reporting (adds 70K)" if DEBUG_KERNEL && EXPERT
        depends on BUG
        depends on ARM || AVR32 || M32R || M68K || SPARC32 || SPARC64 || \
-                  FRV || SUPERH || GENERIC_BUG || BLACKFIN || MN10300 || TILE
+                  FRV || SUPERH || GENERIC_BUG || BLACKFIN || MN10300 || \
+                  TILE || ARM64
        default y
        help
          Say Y here to make BUG() panics output the file name and line number