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
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
13 # Copyright (C) 1994 by Linus Torvalds
16 ifdef CONFIG_ARCH_S390_31
17 LDFLAGS := -m elf_s390
22 CHECKFLAGS += -D__s390__
25 ifdef CONFIG_ARCH_S390X
26 LDFLAGS := -m elf64_s390
27 MODFLAGS += -fpic -D__PIC__
32 CHECKFLAGS += -D__s390__ -D__s390x__
35 cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5)
36 cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
37 cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
39 # old style option for packed stacks
40 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
41 cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
42 aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
43 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
44 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
45 ifdef CONFIG_SMALL_STACK
46 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
50 # new style option for packed stacks
51 ifeq ($(call cc-option-yn,-mpacked-stack),y)
52 cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
53 aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
54 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
55 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
56 ifdef CONFIG_SMALL_STACK
57 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
61 ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
62 cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
63 cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
66 ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
67 cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
68 cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
71 CFLAGS += -mbackchain -msoft-float $(cflags-y)
72 CFLAGS += $(call cc-option,-finline-limit=10000)
73 CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
76 OBJCOPYFLAGS := -O binary
77 LDFLAGS_vmlinux := -e start
79 head-$(CONFIG_ARCH_S390_31) += arch/$(ARCH)/kernel/head.o
80 head-$(CONFIG_ARCH_S390X) += arch/$(ARCH)/kernel/head64.o
81 head-y += arch/$(ARCH)/kernel/init_task.o
83 core-y += arch/$(ARCH)/mm/ arch/$(ARCH)/kernel/ arch/$(ARCH)/crypto/ \
84 arch/$(ARCH)/appldata/
85 libs-y += arch/$(ARCH)/lib/
86 drivers-y += drivers/s390/
87 drivers-$(CONFIG_MATHEMU) += arch/$(ARCH)/math-emu/
89 # must be linked after kernel
90 drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
92 boot := arch/$(ARCH)/boot
97 $(Q)$(MAKE) $(build)=$(boot) $@
100 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
103 $(Q)$(MAKE) $(clean)=$(boot)
105 # Don't use tabs in echo arguments
107 echo '* image - Kernel image for IPL ($(boot)/image)'