From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/x86/Makefile | 266 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 266 insertions(+) create mode 100644 kernel/arch/x86/Makefile (limited to 'kernel/arch/x86/Makefile') diff --git a/kernel/arch/x86/Makefile b/kernel/arch/x86/Makefile new file mode 100644 index 000000000..2fda005bb --- /dev/null +++ b/kernel/arch/x86/Makefile @@ -0,0 +1,266 @@ +# Unified Makefile for i386 and x86_64 + +# select defconfig based on actual architecture +ifeq ($(ARCH),x86) + ifeq ($(shell uname -m),x86_64) + KBUILD_DEFCONFIG := x86_64_defconfig + else + KBUILD_DEFCONFIG := i386_defconfig + endif +else + KBUILD_DEFCONFIG := $(ARCH)_defconfig +endif + +# How to compile the 16-bit code. Note we always compile for -march=i386; +# that way we can complain to the user if the CPU is insufficient. +# +# The -m16 option is supported by GCC >= 4.9 and clang >= 3.5. For +# older versions of GCC, include an *assembly* header to make sure that +# gcc doesn't play any games behind our back. +CODE16GCC_CFLAGS := -m32 -Wa,$(srctree)/arch/x86/boot/code16gcc.h +M16_CFLAGS := $(call cc-option, -m16, $(CODE16GCC_CFLAGS)) + +REALMODE_CFLAGS := $(M16_CFLAGS) -g -Os -D__KERNEL__ \ + -DDISABLE_BRANCH_PROFILING \ + -Wall -Wstrict-prototypes -march=i386 -mregparm=3 \ + -fno-strict-aliasing -fomit-frame-pointer -fno-pic \ + -mno-mmx -mno-sse \ + $(call cc-option, -ffreestanding) \ + $(call cc-option, -fno-stack-protector) \ + $(call cc-option, -mpreferred-stack-boundary=2) +export REALMODE_CFLAGS + +# BITS is used as extension for files which are available in a 32 bit +# and a 64 bit version to simplify shared Makefiles. +# e.g.: obj-y += foo_$(BITS).o +export BITS + +ifdef CONFIG_X86_NEED_RELOCS + LDFLAGS_vmlinux := --emit-relocs +endif + +ifeq ($(CONFIG_X86_32),y) + BITS := 32 + UTS_MACHINE := i386 + CHECKFLAGS += -D__i386__ + + biarch := $(call cc-option,-m32) + KBUILD_AFLAGS += $(biarch) + KBUILD_CFLAGS += $(biarch) + + KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return + + # Never want PIC in a 32-bit kernel, prevent breakage with GCC built + # with nonstandard options + KBUILD_CFLAGS += -fno-pic + + # prevent gcc from keeping the stack 16 byte aligned + KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2) + + # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use + # a lot more stack due to the lack of sharing of stacklots: + KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0400, \ + $(call cc-option,-fno-unit-at-a-time)) + + # CPU-specific tuning. Anything which can be shared with UML should go here. + include arch/x86/Makefile_32.cpu + KBUILD_CFLAGS += $(cflags-y) + + # temporary until string.h is fixed + KBUILD_CFLAGS += -ffreestanding +else + BITS := 64 + UTS_MACHINE := x86_64 + CHECKFLAGS += -D__x86_64__ -m64 + + biarch := -m64 + KBUILD_AFLAGS += -m64 + KBUILD_CFLAGS += -m64 + + # Don't autogenerate traditional x87 instructions + KBUILD_CFLAGS += $(call cc-option,-mno-80387) + KBUILD_CFLAGS += $(call cc-option,-mno-fp-ret-in-387) + + # Use -mpreferred-stack-boundary=3 if supported. + KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=3) + + # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu) + cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8) + cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona) + + cflags-$(CONFIG_MCORE2) += \ + $(call cc-option,-march=core2,$(call cc-option,-mtune=generic)) + cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \ + $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic)) + cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic) + KBUILD_CFLAGS += $(cflags-y) + + KBUILD_CFLAGS += -mno-red-zone + KBUILD_CFLAGS += -mcmodel=kernel + + # -funit-at-a-time shrinks the kernel .text considerably + # unfortunately it makes reading oopses harder. + KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) + + # this works around some issues with generating unwind tables in older gccs + # newer gccs do it by default + KBUILD_CFLAGS += $(call cc-option,-maccumulate-outgoing-args) +endif + +# Make sure compiler does not have buggy stack-protector support. +ifdef CONFIG_CC_STACKPROTECTOR + cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh + ifneq ($(shell $(CONFIG_SHELL) $(cc_has_sp) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y) + $(warning stack-protector enabled but compiler support broken) + endif +endif + +ifdef CONFIG_X86_X32 + x32_ld_ok := $(call try-run,\ + /bin/echo -e '1: .quad 1b' | \ + $(CC) $(KBUILD_AFLAGS) -c -x assembler -o "$$TMP" - && \ + $(OBJCOPY) -O elf32-x86-64 "$$TMP" "$$TMPO" && \ + $(LD) -m elf32_x86_64 "$$TMPO" -o "$$TMP",y,n) + ifeq ($(x32_ld_ok),y) + CONFIG_X86_X32_ABI := y + KBUILD_AFLAGS += -DCONFIG_X86_X32_ABI + KBUILD_CFLAGS += -DCONFIG_X86_X32_ABI + else + $(warning CONFIG_X86_X32 enabled but no binutils support) + endif +endif +export CONFIG_X86_X32_ABI + +# Don't unroll struct assignments with kmemcheck enabled +ifeq ($(CONFIG_KMEMCHECK),y) + KBUILD_CFLAGS += $(call cc-option,-fno-builtin-memcpy) +endif + +# Stackpointer is addressed different for 32 bit and 64 bit x86 +sp-$(CONFIG_X86_32) := esp +sp-$(CONFIG_X86_64) := rsp + +# do binutils support CFI? +cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1) +# is .cfi_signal_frame supported too? +cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1) +cfi-sections := $(call as-instr,.cfi_sections .debug_frame,-DCONFIG_AS_CFI_SECTIONS=1) + +# does binutils support specific instructions? +asinstr := $(call as-instr,fxsaveq (%rax),-DCONFIG_AS_FXSAVEQ=1) +asinstr += $(call as-instr,pshufb %xmm0$(comma)%xmm0,-DCONFIG_AS_SSSE3=1) +asinstr += $(call as-instr,crc32l %eax$(comma)%eax,-DCONFIG_AS_CRC32=1) +avx_instr := $(call as-instr,vxorps %ymm0$(comma)%ymm1$(comma)%ymm2,-DCONFIG_AS_AVX=1) +avx2_instr :=$(call as-instr,vpbroadcastb %xmm0$(comma)%ymm1,-DCONFIG_AS_AVX2=1) + +KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr) $(avx2_instr) +KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr) $(avx2_instr) + +LDFLAGS := -m elf_$(UTS_MACHINE) + +# Speed up the build +KBUILD_CFLAGS += -pipe +# Workaround for a gcc prelease that unfortunately was shipped in a suse release +KBUILD_CFLAGS += -Wno-sign-compare +# +KBUILD_CFLAGS += -fno-asynchronous-unwind-tables +# prevent gcc from generating any FP code by mistake +KBUILD_CFLAGS += -mno-sse -mno-mmx -mno-sse2 -mno-3dnow +KBUILD_CFLAGS += $(call cc-option,-mno-avx,) + +KBUILD_CFLAGS += $(mflags-y) +KBUILD_AFLAGS += $(mflags-y) + +archscripts: scripts_basic + $(Q)$(MAKE) $(build)=arch/x86/tools relocs + +### +# Syscall table generation + +archheaders: + $(Q)$(MAKE) $(build)=arch/x86/syscalls all + +archprepare: +ifeq ($(CONFIG_KEXEC_FILE),y) + $(Q)$(MAKE) $(build)=arch/x86/purgatory arch/x86/purgatory/kexec-purgatory.c +endif + +### +# Kernel objects + +head-y := arch/x86/kernel/head_$(BITS).o +head-y += arch/x86/kernel/head$(BITS).o +head-y += arch/x86/kernel/head.o + +libs-y += arch/x86/lib/ + +# See arch/x86/Kbuild for content of core part of the kernel +core-y += arch/x86/ + +# drivers-y are linked after core-y +drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/ +drivers-$(CONFIG_PCI) += arch/x86/pci/ + +# must be linked after kernel/ +drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/ + +# suspend and hibernation support +drivers-$(CONFIG_PM) += arch/x86/power/ + +drivers-$(CONFIG_FB) += arch/x86/video/ + +#### +# boot loader support. Several targets are kept for legacy purposes + +boot := arch/x86/boot + +BOOT_TARGETS = bzlilo bzdisk fdimage fdimage144 fdimage288 isoimage + +PHONY += bzImage $(BOOT_TARGETS) + +# Default kernel to build +all: bzImage + +# KBUILD_IMAGE specify target image being built +KBUILD_IMAGE := $(boot)/bzImage + +bzImage: vmlinux +ifeq ($(CONFIG_X86_DECODER_SELFTEST),y) + $(Q)$(MAKE) $(build)=arch/x86/tools posttest +endif + $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE) + $(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot + $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/$@ + +$(BOOT_TARGETS): vmlinux + $(Q)$(MAKE) $(build)=$(boot) $@ + +PHONY += install +install: + $(Q)$(MAKE) $(build)=$(boot) $@ + +PHONY += vdso_install +vdso_install: + $(Q)$(MAKE) $(build)=arch/x86/vdso $@ + +archclean: + $(Q)rm -rf $(objtree)/arch/i386 + $(Q)rm -rf $(objtree)/arch/x86_64 + $(Q)$(MAKE) $(clean)=$(boot) + $(Q)$(MAKE) $(clean)=arch/x86/tools + $(Q)$(MAKE) $(clean)=arch/x86/purgatory + +define archhelp + echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)' + echo ' install - Install kernel using' + echo ' (your) ~/bin/$(INSTALLKERNEL) or' + echo ' (distribution) /sbin/$(INSTALLKERNEL) or' + echo ' install to $$(INSTALL_PATH) and run lilo' + echo ' fdimage - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)' + echo ' fdimage144 - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)' + echo ' fdimage288 - Create 2.8MB boot floppy image (arch/x86/boot/fdimage)' + echo ' isoimage - Create a boot CD-ROM image (arch/x86/boot/image.iso)' + echo ' bzdisk/fdimage*/isoimage also accept:' + echo ' FDARGS="..." arguments for the booted kernel' + echo ' FDINITRD=file initrd for the booted kernel' +endef -- cgit 1.2.3-korg