![Robert Richter](/assets/img/avatar_default.png)
Install targets (install, zinstall, uinstall) on arm have a dependency
to vmlinux. This may cause parts of the kernel to be rebuilt during
installation. We must avoid this since this may run as root. Install
targets "ABSOLUTELY MUST NOT MODIFY THE SOURCE TREE." as Linus
emphasized this in:
http://lkml.org/lkml/2013/7/10/600
So on arm and maybe other archs we need the same as for x86:
1648e4f8
x86, kbuild: make "make install" not depend on vmlinux
This patch fixes this for arm. Dependencies are removed and instead a
check to install.sh is added for the files that are needed.
This issue was uncovered by this build error where the -j option is
used in conjunction with install targets:
$ make <makeflags>
$ make <makeflags> zinstall
...
DEPMOD
Usage: .../scripts/depmod.sh /sbin/depmod <kernelrelease>
(INSTALL_MOD_PATH and INSTALL_PATH variables set, so no root perms
required in this case.)
The problem is that zinstall on arm due to its dependency to vmlinux
does a prepare/prepare3 and finally does a forced rewrite of
kernel.release even if it exists already.
Rebuilding kernel.release removes it first and then recreates it. This
might race with another parallel make job running depmod.
So this patch should fix this one too.
Also quoting $(KERNELRELEASE) arg for install.sh as this messes
argument order in case it is empty (which is the case if the kernel
was not built yet).
Signed-off-by: Robert Richter <robert.richter@linaro.org>
Signed-off-by: Robert Richter <rric@kernel.org>
Acked-by: Michal Marek <mmarek@suse.cz>.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
341 lines
12 KiB
Makefile
341 lines
12 KiB
Makefile
#
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# arch/arm/Makefile
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#
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# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies.
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 1995-2001 by Russell King
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# Ensure linker flags are correct
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LDFLAGS :=
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LDFLAGS_vmlinux :=-p --no-undefined -X
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ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
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LDFLAGS_vmlinux += --be8
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endif
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OBJCOPYFLAGS :=-O binary -R .comment -S
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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 += $(call cc-option,-fno-dwarf2-cfi-asm)
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# Do not use arch/arm/defconfig - it's always outdated.
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# Select a platform tht is kept up-to-date
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KBUILD_DEFCONFIG := versatile_defconfig
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# defines filename extension depending memory management type.
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ifeq ($(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 -mapcs -mno-sched-prolog
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endif
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ifeq ($(CONFIG_CC_STACKPROTECTOR),y)
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KBUILD_CFLAGS +=-fstack-protector
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endif
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ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
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KBUILD_CPPFLAGS += -mbig-endian
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AS += -EB
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LD += -EB
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else
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KBUILD_CPPFLAGS += -mlittle-endian
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AS += -EL
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LD += -EL
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endif
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comma = ,
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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-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
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arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
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arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-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 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
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endif
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arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
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arch-$(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=armv3
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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-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
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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) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
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tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
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tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
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tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
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tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
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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 -mno-thumb-interwork
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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 ($(CONFIG_THUMB2_KERNEL),y)
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AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
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AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
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CFLAGS_ISA :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
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AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
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# Work around buggy relocation from gas if requested:
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ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
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CFLAGS_MODULE +=-fno-optimize-sibling-calls
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endif
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else
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CFLAGS_ISA :=$(call cc-option,-marm,)
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AFLAGS_ISA :=$(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) $(tune-y) -include asm/unified.h -msoft-float
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CHECKFLAGS += -D__arm__
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#Default value
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head-y := arch/arm/kernel/head$(MMUEXT).o
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textofs-y := 0x00008000
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textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
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# We don't want the htc bootloader to corrupt kernel during resume
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textofs-$(CONFIG_PM_H1940) := 0x00108000
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# 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-$(CONFIG_ARCH_MSM7X30) := 0x00208000
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textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
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textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
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# Machine directory name. This list is sorted alphanumerically
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# by CONFIG_* macro name.
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machine-$(CONFIG_ARCH_AT91) += at91
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machine-$(CONFIG_ARCH_BCM) += bcm
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machine-$(CONFIG_ARCH_BCM2835) += bcm2835
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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_DOVE) += dove
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machine-$(CONFIG_ARCH_EBSA110) += ebsa110
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machine-$(CONFIG_ARCH_EP93XX) += ep93xx
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machine-$(CONFIG_ARCH_EXYNOS) += exynos
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machine-$(CONFIG_ARCH_GEMINI) += gemini
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machine-$(CONFIG_ARCH_HIGHBANK) += highbank
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machine-$(CONFIG_ARCH_INTEGRATOR) += integrator
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machine-$(CONFIG_ARCH_IOP13XX) += iop13xx
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machine-$(CONFIG_ARCH_IOP32X) += iop32x
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machine-$(CONFIG_ARCH_IOP33X) += iop33x
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machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx
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machine-$(CONFIG_ARCH_KEYSTONE) += keystone
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machine-$(CONFIG_ARCH_KIRKWOOD) += kirkwood
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machine-$(CONFIG_ARCH_KS8695) += ks8695
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machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx
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machine-$(CONFIG_ARCH_MMP) += mmp
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machine-$(CONFIG_ARCH_MSM) += msm
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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_MXS) += mxs
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machine-$(CONFIG_ARCH_NETX) += netx
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machine-$(CONFIG_ARCH_NOMADIK) += nomadik
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machine-$(CONFIG_ARCH_NSPIRE) += nspire
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machine-$(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-$(CONFIG_ARCH_PICOXCELL) += picoxcell
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machine-$(CONFIG_ARCH_PXA) += pxa
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machine-$(CONFIG_ARCH_REALVIEW) += realview
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machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
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machine-$(CONFIG_ARCH_RPC) += rpc
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machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx
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machine-$(CONFIG_ARCH_S3C64XX) += s3c64xx
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machine-$(CONFIG_ARCH_S5P64X0) += s5p64x0
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machine-$(CONFIG_ARCH_S5PC100) += s5pc100
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machine-$(CONFIG_ARCH_S5PV210) += s5pv210
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machine-$(CONFIG_ARCH_SA1100) += sa1100
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machine-$(CONFIG_ARCH_SHARK) += shark
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machine-$(CONFIG_ARCH_SHMOBILE) += shmobile
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machine-$(CONFIG_ARCH_SHMOBILE_MULTI) += shmobile
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machine-$(CONFIG_ARCH_SIRF) += prima2
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machine-$(CONFIG_ARCH_SOCFPGA) += socfpga
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machine-$(CONFIG_ARCH_STI) += sti
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machine-$(CONFIG_ARCH_SUNXI) += sunxi
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machine-$(CONFIG_ARCH_TEGRA) += tegra
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machine-$(CONFIG_ARCH_U300) += u300
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machine-$(CONFIG_ARCH_U8500) += ux500
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machine-$(CONFIG_ARCH_VERSATILE) += versatile
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machine-$(CONFIG_ARCH_VEXPRESS) += vexpress
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machine-$(CONFIG_ARCH_VIRT) += virt
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machine-$(CONFIG_ARCH_VT8500) += vt8500
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machine-$(CONFIG_ARCH_W90X900) += w90x900
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machine-$(CONFIG_ARCH_ZYNQ) += zynq
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machine-$(CONFIG_FOOTBRIDGE) += footbridge
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machine-$(CONFIG_PLAT_SPEAR) += spear
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# Platform directory name. This list is sorted alphanumerically
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# by CONFIG_* macro name.
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plat-$(CONFIG_ARCH_EXYNOS) += samsung
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plat-$(CONFIG_ARCH_OMAP) += omap
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plat-$(CONFIG_ARCH_S3C64XX) += samsung
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plat-$(CONFIG_PLAT_IOP) += iop
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plat-$(CONFIG_PLAT_ORION) += orion
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plat-$(CONFIG_PLAT_PXA) += pxa
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plat-$(CONFIG_PLAT_S3C24XX) += samsung
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plat-$(CONFIG_PLAT_S5P) += samsung
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plat-$(CONFIG_PLAT_VERSATILE) += versatile
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ifeq ($(CONFIG_ARCH_EBSA110),y)
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# This is what happens if you forget the IOCS16 line.
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# PCMCIA cards stop working.
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CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
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export CFLAGS_3c589_cs.o
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endif
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# The byte offset of the kernel image in RAM from the start of RAM.
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TEXT_OFFSET := $(textofs-y)
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# The first directory contains additional information for the boot setup code
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ifneq ($(machine-y),)
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MACHINE := arch/arm/mach-$(word 1,$(machine-y))/
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else
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MACHINE :=
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endif
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ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
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MACHINE :=
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endif
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machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
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platdirs := $(patsubst %,arch/arm/plat-%/,$(plat-y))
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ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
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ifeq ($(KBUILD_SRC),)
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KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
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else
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KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
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endif
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endif
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export TEXT_OFFSET GZFLAGS MMUEXT
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# Do we have FASTFPE?
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FASTFPE :=arch/arm/fastfpe
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ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
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FASTFPE_OBJ :=$(FASTFPE)/
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endif
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core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/
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core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ)
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core-$(CONFIG_VFP) += arch/arm/vfp/
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core-$(CONFIG_XEN) += arch/arm/xen/
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core-$(CONFIG_KVM_ARM_HOST) += arch/arm/kvm/
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# If we have a machine-specific directory, then include it in the build.
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core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
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core-y += arch/arm/net/
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core-y += arch/arm/crypto/
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core-y += $(machdirs) $(platdirs)
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drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/
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libs-y := arch/arm/lib/ $(libs-y)
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# Default target when executing plain make
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ifeq ($(CONFIG_XIP_KERNEL),y)
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KBUILD_IMAGE := xipImage
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else
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KBUILD_IMAGE := zImage
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endif
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# Build the DT binary blobs if we have OF configured
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ifeq ($(CONFIG_USE_OF),y)
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KBUILD_DTBS := dtbs
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endif
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all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
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boot := arch/arm/boot
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archprepare:
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$(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
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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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INSTALL_TARGETS = zinstall uinstall install
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PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
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$(BOOT_TARGETS): vmlinux
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$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
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$(INSTALL_TARGETS):
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$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
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%.dtb: | scripts
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$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
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PHONY += dtbs
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dtbs: scripts
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$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) dtbs
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# We use MRPROPER_FILES and CLEAN_FILES now
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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# My testing targets (bypasses dependencies)
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bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
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i zi:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
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define archhelp
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echo '* zImage - Compressed kernel image (arch/$(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 '* dtbs - Build device tree blobs for enabled boards'
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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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endef
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