1# 2# s390/Makefile 3# 4# This file is included by the global makefile so that you can add your own 5# architecture-specific flags and dependencies. Remember to do have actions 6# for "archclean" and "archdep" for cleaning up and making dependencies for 7# this architecture 8# 9# This file is subject to the terms and conditions of the GNU General Public 10# License. See the file "COPYING" in the main directory of this archive 11# for more details. 12# 13# Copyright (C) 1994 by Linus Torvalds 14# 15 16ifdef CONFIG_ARCH_S390_31 17LDFLAGS := -m elf_s390 18CFLAGS += -m31 19AFLAGS += -m31 20UTS_MACHINE := s390 21STACK_SIZE := 8192 22CHECKFLAGS += -D__s390__ 23endif 24 25ifdef CONFIG_ARCH_S390X 26LDFLAGS := -m elf64_s390 27MODFLAGS += -fpic -D__PIC__ 28CFLAGS += -m64 29AFLAGS += -m64 30UTS_MACHINE := s390x 31STACK_SIZE := 16384 32CHECKFLAGS += -D__s390__ -D__s390x__ 33endif 34 35cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5) 36cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900) 37cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990) 38 39# old style option for packed stacks 40ifeq ($(call cc-option-yn,-mkernel-backchain),y) 41cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 42aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 43cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 44aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 45ifdef CONFIG_SMALL_STACK 46STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 47endif 48endif 49 50# new style option for packed stacks 51ifeq ($(call cc-option-yn,-mpacked-stack),y) 52cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 53aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 54cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 55aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 56ifdef CONFIG_SMALL_STACK 57STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 58endif 59endif 60 61ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) 62cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) 63cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) 64endif 65 66ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 67cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack 68cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE) 69endif 70 71CFLAGS += -mbackchain -msoft-float $(cflags-y) 72CFLAGS += $(call cc-option,-finline-limit=10000) 73CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 74AFLAGS += $(aflags-y) 75 76OBJCOPYFLAGS := -O binary 77LDFLAGS_vmlinux := -e start 78 79head-y := arch/$(ARCH)/kernel/head.o arch/$(ARCH)/kernel/init_task.o 80 81core-y += arch/$(ARCH)/mm/ arch/$(ARCH)/kernel/ arch/$(ARCH)/crypto/ \ 82 arch/$(ARCH)/appldata/ 83libs-y += arch/$(ARCH)/lib/ 84drivers-y += drivers/s390/ 85drivers-$(CONFIG_MATHEMU) += arch/$(ARCH)/math-emu/ 86 87# must be linked after kernel 88drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ 89 90boot := arch/$(ARCH)/boot 91 92all: image 93 94install: vmlinux 95 $(Q)$(MAKE) $(build)=$(boot) $@ 96 97image: vmlinux 98 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 99 100archclean: 101 $(Q)$(MAKE) $(clean)=$(boot) 102 103# Don't use tabs in echo arguments 104define archhelp 105 echo '* image - Kernel image for IPL ($(boot)/image)' 106endef 107