Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

#
# s390/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
#
# 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) 1994 by Linus Torvalds
#

ifndef CONFIG_64BIT
LDFLAGS         := -m elf_s390
KBUILD_CFLAGS   += -m31
KBUILD_AFLAGS   += -m31
UTS_MACHINE     := s390
STACK_SIZE      := 8192
CHECKFLAGS      += -D__s390__ -msize-long
else
LDFLAGS         := -m elf64_s390
MODFLAGS        += -fpic -D__PIC__
KBUILD_CFLAGS   += -m64
KBUILD_AFLAGS   += -m64
UTS_MACHINE     := s390x
STACK_SIZE      := 16384
CHECKFLAGS      += -D__s390__ -D__s390x__
endif

cflags-$(CONFIG_MARCH_G5)   += $(call cc-option,-march=g5)
cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109)

#KBUILD_IMAGE is necessary for make rpm
KBUILD_IMAGE    :=arch/s390/boot/image

#
# Prevent tail-call optimizations, to get clearer backtraces:
#
cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls

# old style option for packed stacks
ifeq ($(call cc-option-yn,-mkernel-backchain),y)
cflags-$(CONFIG_PACK_STACK)  += -mkernel-backchain -D__PACK_STACK
aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
ifdef CONFIG_SMALL_STACK
STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
endif
endif

# new style option for packed stacks
ifeq ($(call cc-option-yn,-mpacked-stack),y)
cflags-$(CONFIG_PACK_STACK)  += -mpacked-stack -D__PACK_STACK
aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
ifdef CONFIG_SMALL_STACK
STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
endif
endif

ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
ifneq ($(call cc-option-yn,-mstack-size=8192),y)
cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
endif
endif

ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
endif

KBUILD_CFLAGS   += -mbackchain -msoft-float $(cflags-y)
KBUILD_CFLAGS   += -pipe -fno-strength-reduce -Wno-sign-compare
KBUILD_AFLAGS   += $(aflags-y)

OBJCOPYFLAGS    := -O binary
LDFLAGS_vmlinux := -e start

head-y          := arch/s390/kernel/head.o arch/s390/kernel/init_task.o

core-y          += arch/s390/mm/ arch/s390/kernel/ arch/s390/crypto/ \
                   arch/s390/appldata/ arch/s390/hypfs/
libs-y          += arch/s390/lib/
drivers-y       += drivers/s390/
drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/

# must be linked after kernel
drivers-$(CONFIG_OPROFILE)      += arch/s390/oprofile/

boot            := arch/s390/boot

all: image

install: vmlinux
        $(Q)$(MAKE) $(build)=$(boot) $@

image: vmlinux
        $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

zfcpdump:
        $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

archclean:
        $(Q)$(MAKE) $(clean)=$(boot)

# Don't use tabs in echo arguments
define archhelp
  echo  '* image           - Kernel image for IPL ($(boot)/image)'
endef