352 lines
12 KiB
Makefile
352 lines
12 KiB
Makefile
#
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# arch/arm/Makefile
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#
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# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies.
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 1995-2001 by Russell King
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LDFLAGS_vmlinux := --no-undefined -X --pic-veneer -z norelro
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ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
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LDFLAGS_vmlinux += --be8
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KBUILD_LDFLAGS_MODULE += --be8
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endif
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GZFLAGS :=-9
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#KBUILD_CFLAGS +=-pipe
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# Never generate .eh_frame
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KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
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# Disable FDPIC ABI
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KBUILD_CFLAGS += $(call cc-option,-mno-fdpic)
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# This should work on most of the modern platforms
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KBUILD_DEFCONFIG := multi_v7_defconfig
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# defines filename extension depending memory management type.
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ifeq ($(CONFIG_MMU),)
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MMUEXT := -nommu
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KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access)
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endif
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ifeq ($(CONFIG_FRAME_POINTER),y)
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KBUILD_CFLAGS +=-fno-omit-frame-pointer
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ifeq ($(CONFIG_CC_IS_GCC),y)
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KBUILD_CFLAGS += -mapcs -mno-sched-prolog
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endif
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endif
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ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
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KBUILD_CPPFLAGS += -mbig-endian
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CHECKFLAGS += -D__ARMEB__
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KBUILD_LDFLAGS += -EB
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else
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KBUILD_CPPFLAGS += -mlittle-endian
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CHECKFLAGS += -D__ARMEL__
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KBUILD_LDFLAGS += -EL
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endif
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#
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# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
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# later may result in code being generated that handles signed short and signed
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# char struct members incorrectly. So disable it.
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# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
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#
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KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra)
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# This selects which instruction set is used.
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# Note that GCC does not numerically define an architecture version
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# macro, but instead defines a whole series of macros which makes
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# testing for a specific architecture or later rather impossible.
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arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m
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arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 -march=armv7-a
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arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 -march=armv6
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# Only override the compiler option if ARMv6. The ARMv6K extensions are
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# always available in ARMv7
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ifeq ($(CONFIG_CPU_32v6),y)
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arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 -march=armv6k
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endif
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arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 -march=armv5te
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arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t
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arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4
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arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3m
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# Evaluate arch cc-option calls now
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arch-y := $(arch-y)
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# This selects how we optimise for the processor.
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tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi
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tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi
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tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi
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tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi
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tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi
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tune-$(CONFIG_CPU_ARM946E) =-mtune=arm9e
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tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi
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tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi
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tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi
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tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi
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tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi
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tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110
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tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100
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tune-$(CONFIG_CPU_XSCALE) =-mtune=xscale
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tune-$(CONFIG_CPU_XSC3) =-mtune=xscale
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tune-$(CONFIG_CPU_FEROCEON) =-mtune=xscale
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tune-$(CONFIG_CPU_V6) =-mtune=arm1136j-s
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tune-$(CONFIG_CPU_V6K) =-mtune=arm1136j-s
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# Evaluate tune cc-option calls now
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tune-y := $(tune-y)
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ifeq ($(CONFIG_AEABI),y)
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CFLAGS_ABI :=-mabi=aapcs-linux -mfpu=vfp
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else
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CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
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endif
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ifeq ($(CONFIG_ARM_UNWIND),y)
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CFLAGS_ABI +=-funwind-tables
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endif
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ifeq ($(CONFIG_CC_IS_CLANG),y)
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CFLAGS_ABI += -meabi gnu
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endif
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ifeq ($(CONFIG_CURRENT_POINTER_IN_TPIDRURO),y)
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CFLAGS_ABI += -mtp=cp15
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endif
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# Accept old syntax despite ".syntax unified"
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AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
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ifeq ($(CONFIG_THUMB2_KERNEL),y)
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CFLAGS_ISA :=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN)
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AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
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else
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CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
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AFLAGS_ISA :=$(CFLAGS_ISA)
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endif
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# Need -Uarm for gcc < 3.x
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KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
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KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
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CHECKFLAGS += -D__arm__
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# Text offset. This list is sorted numerically by address in order to
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# provide a means to avoid/resolve conflicts in multi-arch kernels.
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# Note: the 32kB below this value is reserved for use by the kernel
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# during boot, and this offset is critical to the functioning of
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# kexec-tools.
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textofs-y := 0x00008000
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# We don't want the htc bootloader to corrupt kernel during resume
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textofs-$(CONFIG_PM_H1940) := 0x00108000
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# RTD1195 has Boot ROM at start of address space
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textofs-$(CONFIG_ARCH_REALTEK) := 0x00108000
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# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
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ifeq ($(CONFIG_ARCH_SA1100),y)
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textofs-$(CONFIG_SA1111) := 0x00208000
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endif
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textofs-$(CONFIG_ARCH_IPQ40XX) := 0x00208000
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textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
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textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
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textofs-$(CONFIG_ARCH_MESON) := 0x00208000
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textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
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textofs-$(CONFIG_CPU_RK3308) := 0x00058000
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textofs-$(CONFIG_CPU_RK3506) := 0x00108000
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ifeq ($(CONFIG_ROCKCHIP_THUNDER_BOOT),y)
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textofs-$(CONFIG_CPU_RV1106) := 0x00208000
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textofs-$(CONFIG_CPU_RV1126) := 0x00608000
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endif
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textofs-$(CONFIG_RV1106_HPMCU_FAST_WAKEUP) := 0x00208000
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# Machine directory name. This list is sorted alphanumerically
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# by CONFIG_* macro name.
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machine-$(CONFIG_ARCH_ACTIONS) += actions
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machine-$(CONFIG_ARCH_AIROHA) += airoha
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machine-$(CONFIG_ARCH_ALPINE) += alpine
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machine-$(CONFIG_ARCH_ARTPEC) += artpec
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machine-$(CONFIG_ARCH_ASPEED) += aspeed
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machine-$(CONFIG_ARCH_AT91) += at91
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machine-$(CONFIG_ARCH_AXXIA) += axxia
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machine-$(CONFIG_ARCH_BCM) += bcm
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machine-$(CONFIG_ARCH_BERLIN) += berlin
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machine-$(CONFIG_ARCH_CLPS711X) += clps711x
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machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
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machine-$(CONFIG_ARCH_DAVINCI) += davinci
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machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
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machine-$(CONFIG_ARCH_DOVE) += dove
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machine-$(CONFIG_ARCH_EP93XX) += ep93xx
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machine-$(CONFIG_ARCH_EXYNOS) += exynos
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machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
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machine-$(CONFIG_ARCH_GEMINI) += gemini
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machine-$(CONFIG_ARCH_HIGHBANK) += highbank
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machine-$(CONFIG_ARCH_HISI) += hisi
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machine-$(CONFIG_ARCH_HPE) += hpe
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machine-$(CONFIG_ARCH_IOP32X) += iop32x
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machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx
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machine-$(CONFIG_ARCH_KEYSTONE) += keystone
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machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx
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machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx
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machine-$(CONFIG_ARCH_MESON) += meson
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machine-$(CONFIG_ARCH_MMP) += mmp
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machine-$(CONFIG_ARCH_MOXART) += moxart
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machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0
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machine-$(CONFIG_ARCH_MVEBU) += mvebu
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machine-$(CONFIG_ARCH_MXC) += imx
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machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
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machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut
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machine-$(CONFIG_ARCH_MXS) += mxs
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machine-$(CONFIG_ARCH_MSTARV7) += mstar
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machine-$(CONFIG_ARCH_NOMADIK) += nomadik
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machine-$(CONFIG_ARCH_NPCM) += npcm
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machine-$(CONFIG_ARCH_NSPIRE) += nspire
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machine-$(CONFIG_ARCH_OXNAS) += oxnas
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machine-$(CONFIG_ARCH_OMAP1) += omap1
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machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2
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machine-$(CONFIG_ARCH_ORION5X) += orion5x
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machine-$(CONFIG_ARCH_PXA) += pxa
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machine-$(CONFIG_ARCH_QCOM) += qcom
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machine-$(CONFIG_ARCH_RDA) += rda
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machine-$(CONFIG_ARCH_REALTEK) += realtek
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ifndef CONFIG_ARM_PSCI
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machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
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endif
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machine-$(CONFIG_ARCH_RPC) += rpc
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machine-$(CONFIG_PLAT_SAMSUNG) += s3c
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machine-$(CONFIG_ARCH_S5PV210) += s5pv210
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machine-$(CONFIG_ARCH_SA1100) += sa1100
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machine-$(CONFIG_ARCH_RENESAS) += shmobile
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machine-$(CONFIG_ARCH_INTEL_SOCFPGA) += socfpga
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machine-$(CONFIG_ARCH_STI) += sti
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machine-$(CONFIG_ARCH_STM32) += stm32
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machine-$(CONFIG_ARCH_SUNPLUS) += sunplus
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machine-$(CONFIG_ARCH_SUNXI) += sunxi
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machine-$(CONFIG_ARCH_TEGRA) += tegra
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machine-$(CONFIG_ARCH_U8500) += ux500
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machine-$(CONFIG_ARCH_VT8500) += vt8500
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machine-$(CONFIG_ARCH_ZYNQ) += zynq
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machine-$(CONFIG_PLAT_VERSATILE) += versatile
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machine-$(CONFIG_PLAT_SPEAR) += spear
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# legacy platforms provide their own mach/*.h headers globally,
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# these three are mutually exclusive
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machdirs-$(CONFIG_ARCH_FOOTBRIDGE) += arch/arm/mach-footbridge
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machdirs-$(CONFIG_ARCH_RPC) += arch/arm/mach-rpc
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machdirs-$(CONFIG_ARCH_SA1100) += arch/arm/mach-sa1100
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KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%/include,$(machdirs-y))
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# The byte offset of the kernel image in RAM from the start of RAM.
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TEXT_OFFSET := $(textofs-y)
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export TEXT_OFFSET GZFLAGS MMUEXT
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# If we have a machine-specific directory, then include it in the build.
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core-y += $(patsubst %,arch/arm/mach-%/,$(machine-y))
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# For cleaning
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core- += $(patsubst %,arch/arm/mach-%/,$(machine-))
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core-$(CONFIG_PLAT_ORION) += arch/arm/plat-orion/
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libs-y := arch/arm/lib/ $(libs-y)
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# Default target when executing plain make
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boot := arch/arm/boot
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ifeq ($(CONFIG_XIP_KERNEL),y)
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KBUILD_IMAGE := $(boot)/xipImage
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else
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KBUILD_IMAGE := $(boot)/zImage
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endif
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ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
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prepare: stack_protector_prepare
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ifeq ($(CONFIG_CC_HAVE_STACKPROTECTOR_TLS),y)
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stack_protector_prepare: prepare0
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$(eval KBUILD_CFLAGS += \
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-mstack-protector-guard=tls \
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-mstack-protector-guard-offset=$(shell \
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awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}'\
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include/generated/asm-offsets.h))
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else
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stack_protector_prepare: prepare0
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$(eval SSP_PLUGIN_CFLAGS := \
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-fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \
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awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}'\
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include/generated/asm-offsets.h))
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$(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS))
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$(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS))
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endif
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endif
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all: $(notdir $(KBUILD_IMAGE))
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archheaders:
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$(Q)$(MAKE) $(build)=arch/arm/tools uapi
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archprepare:
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$(Q)$(MAKE) $(build)=arch/arm/tools kapi
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# Convert bzImage to zImage
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bzImage: zImage
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BOOT_TARGETS = zImage Image xipImage bootpImage uImage
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BOOT_TARGETS += Image.gz Image.lz4
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INSTALL_TARGETS = zinstall uinstall install
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PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
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bootpImage uImage: zImage
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zImage: Image
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$(BOOT_TARGETS): vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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@$(kecho) ' Kernel: $(boot)/$@ is ready'
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$(INSTALL_TARGETS): KBUILD_IMAGE = $(boot)/$(patsubst %install,%Image,$@)
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$(INSTALL_TARGETS):
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$(call cmd,install)
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PHONY += vdso_install
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vdso_install:
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ifeq ($(CONFIG_VDSO),y)
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$(Q)$(MAKE) $(build)=arch/arm/vdso $@
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endif
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# My testing targets (bypasses dependencies)
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bp:; $(Q)$(MAKE) $(build)=$(boot) $(boot)/bootpImage
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define archhelp
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echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
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echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
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echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
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echo ' uImage - U-Boot wrapped zImage'
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echo ' bootpImage - Combined zImage and initial RAM disk'
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echo ' (supply initrd image via make variable INITRD=<path>)'
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echo ' install - Install uncompressed kernel'
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echo ' zinstall - Install compressed kernel'
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echo ' uinstall - Install U-Boot wrapped compressed kernel'
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echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
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echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
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echo ' install to $$(INSTALL_PATH) and run lilo'
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echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
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endef
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MAKE_MODULES ?= y
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%.img:
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ifeq ("$(CONFIG_MODULES)$(MAKE_MODULES)$(srctree)","yy$(objtree)")
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$(Q)$(MAKE) $*.dtb zImage Image.gz modules
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else
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$(Q)$(MAKE) $*.dtb zImage Image.gz
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endif
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$(Q)$(srctree)/scripts/mkimg --dtb $*.dtb
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CLEAN_DIRS += out
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CLEAN_FILES += boot.img kernel.img resource.img zboot.img
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