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- #
- # 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
- CFLAGS += -m31
- AFLAGS += -m31
- UTS_MACHINE := s390
- STACK_SIZE := 8192
- CHECKFLAGS += -D__s390__
- else
- LDFLAGS := -m elf64_s390
- MODFLAGS += -fpic -D__PIC__
- CFLAGS += -m64
- 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)
- cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
- 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
- CFLAGS += -mbackchain -msoft-float $(cflags-y)
- CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
- 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) $(boot)/$@
- archclean:
- $(Q)$(MAKE) $(clean)=$(boot)
- # Don't use tabs in echo arguments
- define archhelp
- echo '* image - Kernel image for IPL ($(boot)/image)'
- endef
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