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
24 ifdef CONFIG_ARCH_S390X
25 LDFLAGS := -m elf64_s390
26 MODFLAGS += -fpic -D__PIC__
33 cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5)
34 cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
35 cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
37 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
38 cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
39 aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
40 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
41 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
42 ifdef CONFIG_SMALL_STACK
43 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
47 ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
48 cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
49 cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
52 ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
53 cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
54 cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
57 CFLAGS += -mbackchain $(cflags-y)
58 CFLAGS += $(call cc-option,-finline-limit=10000)
59 CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
62 OBJCOPYFLAGS := -O binary
63 LDFLAGS_vmlinux := -e start
65 head-$(CONFIG_ARCH_S390_31) += arch/$(ARCH)/kernel/head.o
66 head-$(CONFIG_ARCH_S390X) += arch/$(ARCH)/kernel/head64.o
67 head-y += arch/$(ARCH)/kernel/init_task.o
69 core-y += arch/$(ARCH)/mm/ arch/$(ARCH)/kernel/ arch/$(ARCH)/crypto/ \
70 arch/$(ARCH)/appldata/
71 libs-y += arch/$(ARCH)/lib/
72 drivers-y += drivers/s390/
73 drivers-$(CONFIG_MATHEMU) += arch/$(ARCH)/math-emu/
75 # must be linked after kernel
76 drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
78 boot := arch/$(ARCH)/boot
83 $(Q)$(MAKE) $(build)=$(boot) $@
86 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
89 $(Q)$(MAKE) $(clean)=$(boot)
91 prepare: include/asm-$(ARCH)/offsets.h
93 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
96 include/asm-$(ARCH)/offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
97 $(call filechk,gen-asm-offsets)
99 CLEAN_FILES += include/asm-$(ARCH)/offsets.h
101 # Don't use tabs in echo arguments
103 echo '* image - Kernel image for IPL ($(boot)/image)'