| # | |
| # 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) | |
| # Disable FDPIC ABI | |
| KBUILD_CFLAGS += $(call cc-option,-mno-fdpic) | |
| # This should work on most of the modern platforms | |
| KBUILD_DEFCONFIG := multi_v7_defconfig | |
| # defines filename extension depending memory management type. | |
| ifeq ($(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 += $(call cc-option,-fno-ipa-sra) | |
| # This selects which instruction set is used. | |
| arch-$(CONFIG_CPU_32v7M) :=-march=armv7-m | |
| arch-$(CONFIG_CPU_32v7) :=-march=armv7-a | |
| arch-$(CONFIG_CPU_32v6) :=-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) :=-march=armv6k | |
| endif | |
| arch-$(CONFIG_CPU_32v5) :=-march=armv5te | |
| arch-$(CONFIG_CPU_32v4T) :=-march=armv4t | |
| arch-$(CONFIG_CPU_32v4) :=-march=armv4 | |
| arch-$(CONFIG_CPU_32v3) :=-march=armv3m | |
| # 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. | |
| cpp-$(CONFIG_CPU_32v7M) :=-D__LINUX_ARM_ARCH__=7 | |
| cpp-$(CONFIG_CPU_32v7) :=-D__LINUX_ARM_ARCH__=7 | |
| cpp-$(CONFIG_CPU_32v6) :=-D__LINUX_ARM_ARCH__=6 | |
| # Only override the compiler option if ARMv6. The ARMv6K extensions are | |
| # always available in ARMv7 | |
| ifeq ($(CONFIG_CPU_32v6),y) | |
| cpp-$(CONFIG_CPU_32v6K) :=-D__LINUX_ARM_ARCH__=6 | |
| endif | |
| cpp-$(CONFIG_CPU_32v5) :=-D__LINUX_ARM_ARCH__=5 | |
| cpp-$(CONFIG_CPU_32v4T) :=-D__LINUX_ARM_ARCH__=4 | |
| cpp-$(CONFIG_CPU_32v4) :=-D__LINUX_ARM_ARCH__=4 | |
| cpp-$(CONFIG_CPU_32v3) :=-D__LINUX_ARM_ARCH__=3 | |
| # This selects how we optimise for the processor. | |
| tune-$(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-$(CONFIG_CPU_V6K) :=-mtune=arm1136j-s | |
| ifeq ($(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) | |
| KBUILD_CFLAGS += -mtp=cp15 | |
| endif | |
| # Accept old syntax despite ".syntax unified" | |
| AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W) | |
| # The GCC option -ffreestanding is required in order to compile code containing | |
| # ARM/NEON intrinsics in a non C99-compliant environment (such as the kernel) | |
| CC_FLAGS_FPU := -ffreestanding | |
| # Enable <arm_neon.h> | |
| CC_FLAGS_FPU += -isystem $(shell $(CC) -print-file-name=include) | |
| CC_FLAGS_FPU += -march=armv7-a -mfloat-abi=softfp -mfpu=neon | |
| ifeq ($(CONFIG_THUMB2_KERNEL),y) | |
| CFLAGS_ISA :=-Wa,-mimplicit-it=always $(AFLAGS_NOWARN) | |
| AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb | |
| CFLAGS_ISA +=-mthumb | |
| else | |
| CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN) | |
| AFLAGS_ISA :=$(CFLAGS_ISA) | |
| endif | |
| # Need -Uarm for gcc < 3.x | |
| KBUILD_CPPFLAGS +=$(cpp-y) | |
| KBUILD_CFLAGS +=$(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) $(AFLAGS_ISA) -Wa,$(arch-y) $(tune-y) -include $(srctree)/arch/arm/include/asm/unified.h -msoft-float | |
| KBUILD_RUSTFLAGS += --target=arm-unknown-linux-gnueabi | |
| CHECKFLAGS += -D__arm__ | |
| # Text offset. This list is sorted numerically by address in order to | |
| # provide a means to avoid/resolve conflicts in multi-arch kernels. | |
| # Note: the 32kB below this value is reserved for use by the kernel | |
| # during boot, and this offset is critical to the functioning of | |
| # kexec-tools. | |
| textofs-y := 0x00008000 | |
| # RTD1195 has Boot ROM at start of address space | |
| textofs-$(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-$(CONFIG_ARCH_QCOM_RESERVE_SMEM) := 0x00208000 | |
| textofs-$(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-$(CONFIG_ARCH_DAVINCI) += davinci | |
| machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor | |
| machine-$(CONFIG_ARCH_DOVE) += dove | |
| machine-$(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-$(CONFIG_ARCH_IXP4XX) += ixp4xx | |
| machine-$(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-$(CONFIG_ARCH_MV78XX0) += mv78xx0 | |
| machine-$(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_OMAP1) += omap1 | |
| machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2 | |
| machine-$(CONFIG_ARCH_ORION5X) += orion5x | |
| machine-$(CONFIG_ARCH_PXA) += pxa | |
| machine-$(CONFIG_ARCH_QCOM) += qcom | |
| machine-$(CONFIG_ARCH_REALTEK) += realtek | |
| machine-$(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_VT8500) += vt8500 | |
| machine-$(CONFIG_ARCH_ZTE) += zte | |
| machine-$(CONFIG_ARCH_ZYNQ) += zynq | |
| machine-$(CONFIG_PLAT_VERSATILE) += versatile | |
| machine-$(CONFIG_PLAT_SPEAR) += spear | |
| # legacy platforms provide their own mach/*.h headers globally, | |
| # these three are mutually exclusive | |
| machdirs-$(CONFIG_ARCH_FOOTBRIDGE) += arch/arm/mach-footbridge | |
| machdirs-$(CONFIG_ARCH_RPC) += arch/arm/mach-rpc | |
| machdirs-$(CONFIG_ARCH_SA1100) += arch/arm/mach-sa1100 | |
| KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%/include,$(machdirs-y)) | |
| # The byte offset of the kernel image in RAM from the start of RAM. | |
| TEXT_OFFSET := $(textofs-y) | |
| export TEXT_OFFSET GZFLAGS MMUEXT | |
| # If we have a machine-specific directory, then include it in the build. | |
| core-y += $(patsubst %,arch/arm/mach-%/,$(machine-y)) | |
| # For cleaning | |
| core- += $(patsubst %,arch/arm/mach-%/,$(machine-)) | |
| core-$(CONFIG_PLAT_ORION) += arch/arm/plat-orion/ | |
| 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;}'\ | |
| $(objtree)/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;}'\ | |
| $(objtree)/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) $(boot)/$@ | |
| @$(kecho) ' Kernel: $(boot)/$@ is ready' | |
| $(INSTALL_TARGETS): KBUILD_IMAGE = $(boot)/$(patsubst %install,%Image,$@) | |
| $(INSTALL_TARGETS): | |
| $(call cmd,install) | |
| vdso-install-$(CONFIG_VDSO) += arch/arm/vdso/vdso.so.dbg | |
| # My testing targets (bypasses dependencies) | |
| bp:; $(Q)$(MAKE) $(build)=$(boot) $(boot)/bootpImage | |
| include $(srctree)/scripts/Makefile.defconf | |
| PHONY += multi_v7_lpae_defconfig | |
| multi_v7_lpae_defconfig: | |
| $(call merge_into_defconfig,multi_v7_defconfig,lpae) | |
| define archhelp | |
| echo '* zImage - Compressed kernel image (arch/$(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 | |
| echo ' multi_v7_lpae_defconfig - multi_v7_defconfig with CONFIG_ARM_LPAE enabled' | |
| endef |