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 16ifndef CONFIG_64BIT 17LDFLAGS := -m elf_s390 18CFLAGS += -m31 19AFLAGS += -m31 20UTS_MACHINE := s390 21STACK_SIZE := 8192 22CHECKFLAGS += -D__s390__ 23else 24LDFLAGS := -m elf64_s390 25MODFLAGS += -fpic -D__PIC__ 26CFLAGS += -m64 27AFLAGS += -m64 28UTS_MACHINE := s390x 29STACK_SIZE := 16384 30CHECKFLAGS += -D__s390__ -D__s390x__ 31endif 32 33cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5) 34cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900) 35cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990) 36 37# old style option for packed stacks 38ifeq ($(call cc-option-yn,-mkernel-backchain),y) 39cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 40aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 41cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 42aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 43ifdef CONFIG_SMALL_STACK 44STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 45endif 46endif 47 48# new style option for packed stacks 49ifeq ($(call cc-option-yn,-mpacked-stack),y) 50cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 51aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 52cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 53aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 54ifdef CONFIG_SMALL_STACK 55STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 56endif 57endif 58 59ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) 60cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) 61cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) 62endif 63 64ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 65cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack 66cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE) 67endif 68 69CFLAGS += -mbackchain -msoft-float $(cflags-y) 70CFLAGS += $(call cc-option,-finline-limit=10000) 71CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 72AFLAGS += $(aflags-y) 73 74OBJCOPYFLAGS := -O binary 75LDFLAGS_vmlinux := -e start 76 77head-y := arch/$(ARCH)/kernel/head.o arch/$(ARCH)/kernel/init_task.o 78 79core-y += arch/$(ARCH)/mm/ arch/$(ARCH)/kernel/ arch/$(ARCH)/crypto/ \ 80 arch/$(ARCH)/appldata/ 81libs-y += arch/$(ARCH)/lib/ 82drivers-y += drivers/s390/ 83drivers-$(CONFIG_MATHEMU) += arch/$(ARCH)/math-emu/ 84 85# must be linked after kernel 86drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ 87 88boot := arch/$(ARCH)/boot 89 90all: image 91 92install: vmlinux 93 $(Q)$(MAKE) $(build)=$(boot) $@ 94 95image: vmlinux 96 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 97 98archclean: 99 $(Q)$(MAKE) $(clean)=$(boot) 100 101# Don't use tabs in echo arguments 102define archhelp 103 echo '* image - Kernel image for IPL ($(boot)/image)' 104endef 105