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
17 LDFLAGS := -m elf_s390
22 CHECKFLAGS += -D__s390__
24 LDFLAGS := -m elf64_s390
25 MODFLAGS += -fpic -D__PIC__
30 CHECKFLAGS += -D__s390__ -D__s390x__
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) += $(call cc-option,-march=z990)
37 # old style option for packed stacks
38 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
39 cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
40 aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
41 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
42 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
43 ifdef CONFIG_SMALL_STACK
44 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
48 # new style option for packed stacks
49 ifeq ($(call cc-option-yn,-mpacked-stack),y)
50 cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
51 aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
52 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
53 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
54 ifdef CONFIG_SMALL_STACK
55 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
59 ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
60 cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
61 cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
64 ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
65 cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
66 cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
69 CFLAGS += -mbackchain -msoft-float $(cflags-y)
70 CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
73 OBJCOPYFLAGS := -O binary
74 LDFLAGS_vmlinux := -e start
76 head-y := arch/$(ARCH)/kernel/head.o arch/$(ARCH)/kernel/init_task.o
78 core-y += arch/$(ARCH)/mm/ arch/$(ARCH)/kernel/ arch/$(ARCH)/crypto/ \
79 arch/$(ARCH)/appldata/
80 libs-y += arch/$(ARCH)/lib/
81 drivers-y += drivers/s390/
82 drivers-$(CONFIG_MATHEMU) += arch/$(ARCH)/math-emu/
84 # must be linked after kernel
85 drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
87 boot := arch/$(ARCH)/boot
92 $(Q)$(MAKE) $(build)=$(boot) $@
95 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
98 $(Q)$(MAKE) $(clean)=$(boot)
100 # Don't use tabs in echo arguments
102 echo '* image - Kernel image for IPL ($(boot)/image)'