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 16LD_BFD := elf64-s390 17LDFLAGS := -m elf64_s390 18KBUILD_AFLAGS_MODULE += -fPIC 19KBUILD_CFLAGS_MODULE += -fPIC 20KBUILD_CFLAGS += -m64 21KBUILD_AFLAGS += -m64 22UTS_MACHINE := s390x 23STACK_SIZE := 16384 24CHECKFLAGS += -D__s390__ -D__s390x__ 25 26export LD_BFD 27 28mflags-$(CONFIG_MARCH_Z900) := -march=z900 29mflags-$(CONFIG_MARCH_Z990) := -march=z990 30mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109 31mflags-$(CONFIG_MARCH_Z10) := -march=z10 32mflags-$(CONFIG_MARCH_Z196) := -march=z196 33mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 34mflags-$(CONFIG_MARCH_Z13) := -march=z13 35 36aflags-y += $(mflags-y) 37cflags-y += $(mflags-y) 38 39cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900 40cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990 41cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109 42cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10 43cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 44cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 45cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 46 47#KBUILD_IMAGE is necessary for make rpm 48KBUILD_IMAGE :=arch/s390/boot/image 49 50# 51# Prevent tail-call optimizations, to get clearer backtraces: 52# 53cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls 54 55# old style option for packed stacks 56ifeq ($(call cc-option-yn,-mkernel-backchain),y) 57cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 58aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 59endif 60 61# new style option for packed stacks 62ifeq ($(call cc-option-yn,-mpacked-stack),y) 63cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 64aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 65endif 66 67ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) 68cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) 69ifneq ($(call cc-option-yn,-mstack-size=8192),y) 70cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) 71endif 72endif 73 74ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 75cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack 76endif 77 78ifdef CONFIG_FUNCTION_TRACER 79# make use of hotpatch feature if the compiler supports it 80cc_hotpatch := -mhotpatch=0,3 81ifeq ($(call cc-option-yn,$(cc_hotpatch)),y) 82CC_FLAGS_FTRACE := $(cc_hotpatch) 83KBUILD_AFLAGS += -DCC_USING_HOTPATCH 84KBUILD_CFLAGS += -DCC_USING_HOTPATCH 85endif 86endif 87 88KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) 89KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 90KBUILD_AFLAGS += $(aflags-y) 91 92OBJCOPYFLAGS := -O binary 93 94head-y := arch/s390/kernel/head.o 95head-y += arch/s390/kernel/head64.o 96 97# See arch/s390/Kbuild for content of core part of the kernel 98core-y += arch/s390/ 99 100libs-y += arch/s390/lib/ 101drivers-y += drivers/s390/ 102 103# must be linked after kernel 104drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ 105 106boot := arch/s390/boot 107 108all: image bzImage 109 110install: vmlinux 111 $(Q)$(MAKE) $(build)=$(boot) $@ 112 113image bzImage: vmlinux 114 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 115 116zfcpdump: 117 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 118 119vdso_install: 120 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ 121 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ 122 123archclean: 124 $(Q)$(MAKE) $(clean)=$(boot) 125 126# Don't use tabs in echo arguments 127define archhelp 128 echo '* image - Kernel image for IPL ($(boot)/image)' 129 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)' 130endef 131