mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
1db9e0513d
Add a new Kconfig choice group which allows to configure how gcc should tune the generated code (via -mtune option). By default the -mtune parameter will match the -march parameter. This is a rather large patch, but I wouldn't know how to make this shorter unfortunately. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
129 lines
3.6 KiB
Makefile
129 lines
3.6 KiB
Makefile
#
|
|
# s390/Makefile
|
|
#
|
|
# This file is included by the global makefile so that you can add your own
|
|
# architecture-specific flags and dependencies. Remember to do have actions
|
|
# for "archclean" and "archdep" for cleaning up and making dependencies for
|
|
# this architecture
|
|
#
|
|
# This file is subject to the terms and conditions of the GNU General Public
|
|
# License. See the file "COPYING" in the main directory of this archive
|
|
# for more details.
|
|
#
|
|
# Copyright (C) 1994 by Linus Torvalds
|
|
#
|
|
|
|
ifndef CONFIG_64BIT
|
|
LD_BFD := elf32-s390
|
|
LDFLAGS := -m elf_s390
|
|
KBUILD_CFLAGS += -m31
|
|
KBUILD_AFLAGS += -m31
|
|
UTS_MACHINE := s390
|
|
STACK_SIZE := 8192
|
|
CHECKFLAGS += -D__s390__ -msize-long
|
|
else
|
|
LD_BFD := elf64-s390
|
|
LDFLAGS := -m elf64_s390
|
|
KBUILD_AFLAGS_MODULE += -fPIC
|
|
KBUILD_CFLAGS_MODULE += -fPIC
|
|
KBUILD_CFLAGS += -m64
|
|
KBUILD_AFLAGS += -m64
|
|
UTS_MACHINE := s390x
|
|
STACK_SIZE := 16384
|
|
CHECKFLAGS += -D__s390__ -D__s390x__
|
|
endif
|
|
|
|
export LD_BFD
|
|
|
|
cflags-$(CONFIG_MARCH_G5) += -march=g5
|
|
cflags-$(CONFIG_MARCH_Z900) += -march=z900
|
|
cflags-$(CONFIG_MARCH_Z990) += -march=z990
|
|
cflags-$(CONFIG_MARCH_Z9_109) += -march=z9-109
|
|
cflags-$(CONFIG_MARCH_Z10) += -march=z10
|
|
cflags-$(CONFIG_MARCH_Z196) += -march=z196
|
|
cflags-$(CONFIG_MARCH_ZEC12) += -march=zEC12
|
|
|
|
cflags-$(CONFIG_MARCH_G5_TUNE) += -mtune=g5
|
|
cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900
|
|
cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990
|
|
cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109
|
|
cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10
|
|
cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196
|
|
cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12
|
|
|
|
#KBUILD_IMAGE is necessary for make rpm
|
|
KBUILD_IMAGE :=arch/s390/boot/image
|
|
|
|
#
|
|
# Prevent tail-call optimizations, to get clearer backtraces:
|
|
#
|
|
cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
|
|
|
|
# old style option for packed stacks
|
|
ifeq ($(call cc-option-yn,-mkernel-backchain),y)
|
|
cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
|
|
aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
|
|
endif
|
|
|
|
# new style option for packed stacks
|
|
ifeq ($(call cc-option-yn,-mpacked-stack),y)
|
|
cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
|
|
aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
|
|
endif
|
|
|
|
ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
|
|
cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
|
|
ifneq ($(call cc-option-yn,-mstack-size=8192),y)
|
|
cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
|
|
endif
|
|
endif
|
|
|
|
ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
|
|
cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
|
|
endif
|
|
|
|
KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
|
|
KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
|
|
KBUILD_AFLAGS += $(aflags-y)
|
|
|
|
OBJCOPYFLAGS := -O binary
|
|
|
|
head-y := arch/s390/kernel/head.o
|
|
head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
|
|
|
|
# See arch/s390/Kbuild for content of core part of the kernel
|
|
core-y += arch/s390/
|
|
|
|
libs-y += arch/s390/lib/
|
|
drivers-y += drivers/s390/
|
|
|
|
# must be linked after kernel
|
|
drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
|
|
|
|
boot := arch/s390/boot
|
|
|
|
all: image bzImage
|
|
|
|
install: vmlinux
|
|
$(Q)$(MAKE) $(build)=$(boot) $@
|
|
|
|
image bzImage: vmlinux
|
|
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
|
|
|
|
zfcpdump:
|
|
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
|
|
|
|
vdso_install:
|
|
ifeq ($(CONFIG_64BIT),y)
|
|
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
|
|
endif
|
|
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
|
|
|
|
archclean:
|
|
$(Q)$(MAKE) $(clean)=$(boot)
|
|
|
|
# Don't use tabs in echo arguments
|
|
define archhelp
|
|
echo '* image - Kernel image for IPL ($(boot)/image)'
|
|
echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)'
|
|
endef
|