mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-01 14:44:12 +00:00
f05eb1d24e
Currently, we implement the per-task stack protector for ARM using a GCC plugin, due to lack of native compiler support. However, work is underway to get this implemented in the compiler, which means we will be able to deprecate the GCC plugin at some point. In the meantime, we will need to support both, where the native compiler implementation is obviously preferred. So let's wire this up in Kconfig and the Makefile. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Marc Zyngier <maz@kernel.org> Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> # ARMv7M
348 lines
12 KiB
Makefile
348 lines
12 KiB
Makefile
#
|
|
# arch/arm/Makefile
|
|
#
|
|
# This file is included by the global makefile so that you can add your own
|
|
# architecture-specific flags and dependencies.
|
|
#
|
|
# 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) 1995-2001 by Russell King
|
|
|
|
LDFLAGS_vmlinux := --no-undefined -X --pic-veneer -z norelro
|
|
ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
|
|
LDFLAGS_vmlinux += --be8
|
|
KBUILD_LDFLAGS_MODULE += --be8
|
|
endif
|
|
|
|
GZFLAGS :=-9
|
|
#KBUILD_CFLAGS +=-pipe
|
|
|
|
# Never generate .eh_frame
|
|
KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
|
|
|
|
# This should work on most of the modern platforms
|
|
KBUILD_DEFCONFIG := multi_v7_defconfig
|
|
|
|
# defines filename extension depending memory management type.
|
|
ifeq ($(CONFIG_MMU),)
|
|
MMUEXT := -nommu
|
|
KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access)
|
|
endif
|
|
|
|
ifeq ($(CONFIG_FRAME_POINTER),y)
|
|
KBUILD_CFLAGS +=-fno-omit-frame-pointer
|
|
ifeq ($(CONFIG_CC_IS_GCC),y)
|
|
KBUILD_CFLAGS += -mapcs -mno-sched-prolog
|
|
endif
|
|
endif
|
|
|
|
ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
|
|
KBUILD_CPPFLAGS += -mbig-endian
|
|
CHECKFLAGS += -D__ARMEB__
|
|
KBUILD_LDFLAGS += -EB
|
|
else
|
|
KBUILD_CPPFLAGS += -mlittle-endian
|
|
CHECKFLAGS += -D__ARMEL__
|
|
KBUILD_LDFLAGS += -EL
|
|
endif
|
|
|
|
#
|
|
# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
|
|
# later may result in code being generated that handles signed short and signed
|
|
# char struct members incorrectly. So disable it.
|
|
# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
|
|
#
|
|
KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra)
|
|
|
|
# This selects which instruction set is used.
|
|
# Note that GCC does not numerically define an architecture version
|
|
# macro, but instead defines a whole series of macros which makes
|
|
# testing for a specific architecture or later rather impossible.
|
|
arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m
|
|
arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 -march=armv7-a
|
|
arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 -march=armv6
|
|
# Only override the compiler option if ARMv6. The ARMv6K extensions are
|
|
# always available in ARMv7
|
|
ifeq ($(CONFIG_CPU_32v6),y)
|
|
arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 -march=armv6k
|
|
endif
|
|
arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 -march=armv5te
|
|
arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t
|
|
arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4
|
|
arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3m
|
|
|
|
# Evaluate arch cc-option calls now
|
|
arch-y := $(arch-y)
|
|
|
|
# This selects how we optimise for the processor.
|
|
tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi
|
|
tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi
|
|
tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi
|
|
tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi
|
|
tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi
|
|
tune-$(CONFIG_CPU_ARM946E) =-mtune=arm9e
|
|
tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi
|
|
tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi
|
|
tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi
|
|
tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi
|
|
tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi
|
|
tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110
|
|
tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100
|
|
tune-$(CONFIG_CPU_XSCALE) =-mtune=xscale
|
|
tune-$(CONFIG_CPU_XSC3) =-mtune=xscale
|
|
tune-$(CONFIG_CPU_FEROCEON) =-mtune=xscale
|
|
tune-$(CONFIG_CPU_V6) =-mtune=arm1136j-s
|
|
tune-$(CONFIG_CPU_V6K) =-mtune=arm1136j-s
|
|
|
|
# Evaluate tune cc-option calls now
|
|
tune-y := $(tune-y)
|
|
|
|
ifeq ($(CONFIG_AEABI),y)
|
|
CFLAGS_ABI :=-mabi=aapcs-linux -mfpu=vfp
|
|
else
|
|
CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
|
|
endif
|
|
|
|
ifeq ($(CONFIG_ARM_UNWIND),y)
|
|
CFLAGS_ABI +=-funwind-tables
|
|
endif
|
|
|
|
ifeq ($(CONFIG_CC_IS_CLANG),y)
|
|
CFLAGS_ABI += -meabi gnu
|
|
endif
|
|
|
|
ifeq ($(CONFIG_CURRENT_POINTER_IN_TPIDRURO),y)
|
|
CFLAGS_ABI += -mtp=cp15
|
|
endif
|
|
|
|
# Accept old syntax despite ".syntax unified"
|
|
AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
|
|
|
|
ifeq ($(CONFIG_THUMB2_KERNEL),y)
|
|
CFLAGS_ISA :=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN)
|
|
AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
|
|
else
|
|
CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
|
|
AFLAGS_ISA :=$(CFLAGS_ISA)
|
|
endif
|
|
|
|
# Need -Uarm for gcc < 3.x
|
|
KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
|
|
KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
|
|
|
|
CHECKFLAGS += -D__arm__
|
|
|
|
#Default value
|
|
head-y := arch/arm/kernel/head$(MMUEXT).o
|
|
|
|
# Text offset. This list is sorted numerically by address in order to
|
|
# provide a means to avoid/resolve conflicts in multi-arch kernels.
|
|
# Note: the 32kB below this value is reserved for use by the kernel
|
|
# during boot, and this offset is critical to the functioning of
|
|
# kexec-tools.
|
|
textofs-y := 0x00008000
|
|
# We don't want the htc bootloader to corrupt kernel during resume
|
|
textofs-$(CONFIG_PM_H1940) := 0x00108000
|
|
# RTD1195 has Boot ROM at start of address space
|
|
textofs-$(CONFIG_ARCH_REALTEK) := 0x00108000
|
|
# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
|
|
ifeq ($(CONFIG_ARCH_SA1100),y)
|
|
textofs-$(CONFIG_SA1111) := 0x00208000
|
|
endif
|
|
textofs-$(CONFIG_ARCH_IPQ40XX) := 0x00208000
|
|
textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
|
|
textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
|
|
textofs-$(CONFIG_ARCH_MESON) := 0x00208000
|
|
textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
|
|
|
|
# Machine directory name. This list is sorted alphanumerically
|
|
# by CONFIG_* macro name.
|
|
machine-$(CONFIG_ARCH_ACTIONS) += actions
|
|
machine-$(CONFIG_ARCH_ALPINE) += alpine
|
|
machine-$(CONFIG_ARCH_ARTPEC) += artpec
|
|
machine-$(CONFIG_ARCH_ASPEED) += aspeed
|
|
machine-$(CONFIG_ARCH_AT91) += at91
|
|
machine-$(CONFIG_ARCH_AXXIA) += axxia
|
|
machine-$(CONFIG_ARCH_BCM) += bcm
|
|
machine-$(CONFIG_ARCH_BERLIN) += berlin
|
|
machine-$(CONFIG_ARCH_CLPS711X) += clps711x
|
|
machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
|
|
machine-$(CONFIG_ARCH_DAVINCI) += davinci
|
|
machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
|
|
machine-$(CONFIG_ARCH_DOVE) += dove
|
|
machine-$(CONFIG_ARCH_EP93XX) += ep93xx
|
|
machine-$(CONFIG_ARCH_EXYNOS) += exynos
|
|
machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
|
|
machine-$(CONFIG_ARCH_GEMINI) += gemini
|
|
machine-$(CONFIG_ARCH_HIGHBANK) += highbank
|
|
machine-$(CONFIG_ARCH_HISI) += hisi
|
|
machine-$(CONFIG_ARCH_INTEGRATOR) += integrator
|
|
machine-$(CONFIG_ARCH_IOP32X) += iop32x
|
|
machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx
|
|
machine-$(CONFIG_ARCH_KEYSTONE) += keystone
|
|
machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx
|
|
machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx
|
|
machine-$(CONFIG_ARCH_MESON) += meson
|
|
machine-$(CONFIG_ARCH_MMP) += mmp
|
|
machine-$(CONFIG_ARCH_MPS2) += vexpress
|
|
machine-$(CONFIG_ARCH_MOXART) += moxart
|
|
machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0
|
|
machine-$(CONFIG_ARCH_MVEBU) += mvebu
|
|
machine-$(CONFIG_ARCH_MXC) += imx
|
|
machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
|
|
machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut
|
|
machine-$(CONFIG_ARCH_MXS) += mxs
|
|
machine-$(CONFIG_ARCH_MSTARV7) += mstar
|
|
machine-$(CONFIG_ARCH_NOMADIK) += nomadik
|
|
machine-$(CONFIG_ARCH_NPCM) += npcm
|
|
machine-$(CONFIG_ARCH_NSPIRE) += nspire
|
|
machine-$(CONFIG_ARCH_OXNAS) += oxnas
|
|
machine-$(CONFIG_ARCH_OMAP1) += omap1
|
|
machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2
|
|
machine-$(CONFIG_ARCH_ORION5X) += orion5x
|
|
machine-$(CONFIG_ARCH_PXA) += pxa
|
|
machine-$(CONFIG_ARCH_QCOM) += qcom
|
|
machine-$(CONFIG_ARCH_RDA) += rda
|
|
machine-$(CONFIG_ARCH_REALTEK) += realtek
|
|
machine-$(CONFIG_ARCH_REALVIEW) += realview
|
|
machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
|
|
machine-$(CONFIG_ARCH_RPC) += rpc
|
|
machine-$(CONFIG_PLAT_SAMSUNG) += s3c
|
|
machine-$(CONFIG_ARCH_S5PV210) += s5pv210
|
|
machine-$(CONFIG_ARCH_SA1100) += sa1100
|
|
machine-$(CONFIG_ARCH_RENESAS) += shmobile
|
|
machine-$(CONFIG_ARCH_INTEL_SOCFPGA) += socfpga
|
|
machine-$(CONFIG_ARCH_STI) += sti
|
|
machine-$(CONFIG_ARCH_STM32) += stm32
|
|
machine-$(CONFIG_ARCH_SUNXI) += sunxi
|
|
machine-$(CONFIG_ARCH_TEGRA) += tegra
|
|
machine-$(CONFIG_ARCH_U8500) += ux500
|
|
machine-$(CONFIG_ARCH_VERSATILE) += versatile
|
|
machine-$(CONFIG_ARCH_VEXPRESS) += vexpress
|
|
machine-$(CONFIG_ARCH_VT8500) += vt8500
|
|
machine-$(CONFIG_ARCH_ZYNQ) += zynq
|
|
machine-$(CONFIG_PLAT_SPEAR) += spear
|
|
|
|
# Platform directory name. This list is sorted alphanumerically
|
|
# by CONFIG_* macro name.
|
|
plat-$(CONFIG_ARCH_OMAP) += omap
|
|
plat-$(CONFIG_PLAT_ORION) += orion
|
|
plat-$(CONFIG_PLAT_PXA) += pxa
|
|
plat-$(CONFIG_PLAT_VERSATILE) += versatile
|
|
|
|
# The byte offset of the kernel image in RAM from the start of RAM.
|
|
TEXT_OFFSET := $(textofs-y)
|
|
|
|
# The first directory contains additional information for the boot setup code
|
|
ifneq ($(machine-y),)
|
|
MACHINE := arch/arm/mach-$(word 1,$(machine-y))/
|
|
else
|
|
MACHINE :=
|
|
endif
|
|
ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
|
|
MACHINE :=
|
|
endif
|
|
|
|
machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
|
|
platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
|
|
|
|
ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
|
|
ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y)
|
|
KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
|
|
endif
|
|
endif
|
|
|
|
export TEXT_OFFSET GZFLAGS MMUEXT
|
|
|
|
# If we have a machine-specific directory, then include it in the build.
|
|
core-y += $(machdirs) $(platdirs)
|
|
|
|
# For cleaning
|
|
core- += $(patsubst %,arch/arm/mach-%/, $(machine-))
|
|
core- += $(patsubst %,arch/arm/plat-%/, $(plat-))
|
|
|
|
libs-y := arch/arm/lib/ $(libs-y)
|
|
|
|
# Default target when executing plain make
|
|
boot := arch/arm/boot
|
|
ifeq ($(CONFIG_XIP_KERNEL),y)
|
|
KBUILD_IMAGE := $(boot)/xipImage
|
|
else
|
|
KBUILD_IMAGE := $(boot)/zImage
|
|
endif
|
|
|
|
ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
|
|
prepare: stack_protector_prepare
|
|
ifeq ($(CONFIG_CC_HAVE_STACKPROTECTOR_TLS),y)
|
|
stack_protector_prepare: prepare0
|
|
$(eval KBUILD_CFLAGS += \
|
|
-mstack-protector-guard=tls \
|
|
-mstack-protector-guard-offset=$(shell \
|
|
awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}'\
|
|
include/generated/asm-offsets.h))
|
|
else
|
|
stack_protector_prepare: prepare0
|
|
$(eval SSP_PLUGIN_CFLAGS := \
|
|
-fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \
|
|
awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}'\
|
|
include/generated/asm-offsets.h))
|
|
$(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS))
|
|
$(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS))
|
|
endif
|
|
endif
|
|
|
|
all: $(notdir $(KBUILD_IMAGE))
|
|
|
|
|
|
archheaders:
|
|
$(Q)$(MAKE) $(build)=arch/arm/tools uapi
|
|
|
|
archprepare:
|
|
$(Q)$(MAKE) $(build)=arch/arm/tools kapi
|
|
|
|
# Convert bzImage to zImage
|
|
bzImage: zImage
|
|
|
|
BOOT_TARGETS = zImage Image xipImage bootpImage uImage
|
|
INSTALL_TARGETS = zinstall uinstall install
|
|
|
|
PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
|
|
|
|
bootpImage uImage: zImage
|
|
zImage: Image
|
|
|
|
$(BOOT_TARGETS): vmlinux
|
|
$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
|
|
@$(kecho) ' Kernel: $(boot)/$@ is ready'
|
|
|
|
$(INSTALL_TARGETS):
|
|
$(CONFIG_SHELL) $(srctree)/$(boot)/install.sh "$(KERNELRELEASE)" \
|
|
$(boot)/$(patsubst %install,%Image,$@) System.map "$(INSTALL_PATH)"
|
|
|
|
PHONY += vdso_install
|
|
vdso_install:
|
|
ifeq ($(CONFIG_VDSO),y)
|
|
$(Q)$(MAKE) $(build)=arch/arm/vdso $@
|
|
endif
|
|
|
|
# My testing targets (bypasses dependencies)
|
|
bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
|
|
|
|
|
|
define archhelp
|
|
echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
|
|
echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
|
|
echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
|
|
echo ' uImage - U-Boot wrapped zImage'
|
|
echo ' bootpImage - Combined zImage and initial RAM disk'
|
|
echo ' (supply initrd image via make variable INITRD=<path>)'
|
|
echo ' install - Install uncompressed kernel'
|
|
echo ' zinstall - Install compressed kernel'
|
|
echo ' uinstall - Install U-Boot wrapped compressed kernel'
|
|
echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
|
|
echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
|
|
echo ' install to $$(INSTALL_PATH) and run lilo'
|
|
echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
|
|
endef
|