| # |
| # 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 += $(call cc-option,-fno-ipa-sra) |
| |
| # This selects which instruction set is used. |
| # Note that GCC does not numerically define an architecture version |
| # macro, but instead defines a whole series of macros which makes |
| # testing for a specific architecture or later rather impossible. |
| arch-$(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) $(tune-y) -include asm/unified.h -msoft-float |
| |
| CHECKFLAGS += -D__arm__ |
| |
| # Text offset. This list is sorted numerically by address in order to |
| # provide a means to avoid/resolve conflicts in multi-arch kernels. |
| # Note: the 32kB below this value is reserved for use by the kernel |
| # during boot, and this offset is critical to the functioning of |
| # kexec-tools. |
| textofs-y := 0x00008000 |
| # We don't want the htc bootloader to corrupt kernel during resume |
| textofs-$(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_AIROHA) += airoha |
| 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-$(CONFIG_ARCH_HPE) += hpe |
| machine-$(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-$(CONFIG_ARCH_MOXART) += moxart |
| machine-$(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_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-$(CONFIG_ARCH_SUNPLUS) += sunplus |
| machine-$(CONFIG_ARCH_SUNXI) += sunxi |
| machine-$(CONFIG_ARCH_TEGRA) += tegra |
| machine-$(CONFIG_ARCH_U8500) += ux500 |
| machine-$(CONFIG_ARCH_VT8500) += vt8500 |
| machine-$(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;}'\ |
| 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) $(boot)/$@ |
| @$(kecho) ' Kernel: $(boot)/$@ is ready' |
| |
| $(INSTALL_TARGETS): KBUILD_IMAGE = $(boot)/$(patsubst %install,%Image,$@) |
| $(INSTALL_TARGETS): |
| $(call cmd,install) |
| |
| PHONY += vdso_install |
| vdso_install: |
| ifeq ($(CONFIG_VDSO),y) |
| $(Q)$(MAKE) $(build)=arch/arm/vdso $@ |
| endif |
| |
| # My testing targets (bypasses dependencies) |
| bp:; $(Q)$(MAKE) $(build)=$(boot) $(boot)/bootpImage |
| |
| |
| define archhelp |
| echo '* zImage - Compressed kernel image (arch/$(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 |
