arm64: Build infrastructure

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"

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

#

# 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

Image

Image.gz

#

# 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