| # |
| # 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) += $(call cc-option,-march=z9-109) |
| |
| # |
| # Prevent tail-call optimizations, to get clearer backtraces: |
| # |
| cflags-$(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 += $(aflags-y) |
| |
| OBJCOPYFLAGS := -O binary |
| LDFLAGS_vmlinux := -e start |
| |
| head-y := arch/$(ARCH)/kernel/head.o arch/$(ARCH)/kernel/init_task.o |
| |
| core-y += arch/$(ARCH)/mm/ arch/$(ARCH)/kernel/ arch/$(ARCH)/crypto/ \ |
| arch/$(ARCH)/appldata/ arch/$(ARCH)/hypfs/ |
| libs-y += arch/$(ARCH)/lib/ |
| drivers-y += drivers/s390/ |
| drivers-$(CONFIG_MATHEMU) += arch/$(ARCH)/math-emu/ |
| |
| # must be linked after kernel |
| drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ |
| |
| boot := arch/$(ARCH)/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 |