On 08/23/2013 01:51 PM, Tony Lindgren wrote: > * Chen Gang <gang.chen@xxxxxxxxxxx> [130822 20:20]: >> The related error: >> >> /tmp/ccOMIprI.s: Assembler messages: >> /tmp/ccOMIprI.s:507: Error: selected processor does not support ARM mode `isb ' >> /tmp/ccOMIprI.s:513: Error: selected processor does not support ARM mode `isb ' >> /tmp/ccOMIprI.s:514: Error: selected processor does not support ARM mode `dsb ' >> /tmp/ccOMIprI.s:584: Error: selected processor does not support ARM mode `isb ' >> /tmp/ccOMIprI.s:590: Error: selected processor does not support ARM mode `isb ' >> /tmp/ccOMIprI.s:591: Error: selected processor does not support ARM mode `dsb ' >> make[1]: *** [arch/arm/mach-vexpress/dcscb.o] Error 1 >> make: *** [arch/arm/mach-vexpress] Error 2 >> >> >> Signed-off-by: Chen Gang <gang.chen@xxxxxxxxxxx> >> --- >> arch/arm/mach-vexpress/Kconfig | 2 +- >> 1 files changed, 1 insertions(+), 1 deletions(-) >> >> diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig >> index 3657954..9b176ce 100644 >> --- a/arch/arm/mach-vexpress/Kconfig >> +++ b/arch/arm/mach-vexpress/Kconfig >> @@ -1,5 +1,5 @@ >> config ARCH_VEXPRESS >> - bool "ARM Ltd. Versatile Express family" if ARCH_MULTI_V7 >> + bool "ARM Ltd. Versatile Express family" if ARCH_MULTI_V7 && !CPU_V6 && !CPU_V6K >> select ARCH_REQUIRE_GPIOLIB >> select ARM_AMBA >> select ARM_GIC > > We do support v6 and v7 in the same kernel. So instead of limiting > what to select in Kconfig, just specify the v7 flags in the Makefile > for the vexpress .c file with the inline assembly. Look for the > find command I posted earlier in this thread for examples of specifying > flags for a single object in a makefile. > I guess what your meaning is like the diff below: --------------------------------diff begin------------------------------ diff --git a/arch/arm/mach-vexpress/Makefile b/arch/arm/mach-vexpress/Makefile index 36ea824..4ebfda4 100644 --- a/arch/arm/mach-vexpress/Makefile +++ b/arch/arm/mach-vexpress/Makefile @@ -2,7 +2,7 @@ # Makefile for the linux kernel. # ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \ - -I$(srctree)/arch/arm/plat-versatile/include + -I$(srctree)/arch/arm/plat-versatile/include -march=armv7-a obj-y := v2m.o obj-$(CONFIG_ARCH_VEXPRESS_CA9X4) += ct-ca9x4.o --------------------------------diff end-------------------------------- If my above guess is correct, it can pass compiling without related warnings, but it will be like below (CONFIG_CPU_32v6 is enabled in allmodconfig): "... -D__LINUX_ARM_ARCH__=6 -march=armv6k -mtune=arm1136j ... -march=armv7-a ..." Is '-march=armv7-a' conflict with '-D__LINUX_ARM_ARCH__=6' ? The related command is : arm-linux-gnueabi-gcc -Wp,-MD,arch/arm/mach-vexpress/.dcscb.o.d -nostdinc -isystem /usr/lib/gcc/arm-linux-gnueabi/4.7/include -I/root/linux-next/arch/arm/include -Iarch/arm/include/generated -Iinclude -I/root/linux-next/arch/arm/include/uapi -Iarch/arm/include/generated/uapi -I/root/linux-next/include/uapi -Iinclude/generated/uapi -include /root/linux-next/include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -Werror=implicit-int -Werror=strict-prototypes -Os -Wno-maybe-uninitialized -fno-dwarf2-cfi-asm -fno-omit-frame-pointer -mapcs -mno-sched-prolog -fstack-protector -mabi=aapcs-linux -mno-thumb-interwork -funwind-tables -marm -D__LINUX_ARM_ARCH__=6 -march=armv6k -mtune=arm1136j-s -msoft-float -Uarm -fno-reorder-blocks -fno-ipa-cp-clone -fno-partial-inlining -Wframe-larger-than=1024 -Wno-unused-but-se t-variabl e -fno-omit-frame-pointer -fno-optimize-sibling-calls -g -femit-struct-debug-baseonly -fno-var-tracking -pg -fno-inline-functions-called-once -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -DCC_HAVE_ASM_GOTO -I/root/linux-next/arch/arm/mach-vexpress/include -I/root/linux-next/arch/arm/plat-versatile/include -march=armv7-a -W -D"KBUILD_STR(s)=#s" -D"KBUILD_BA Thanks. -- Chen Gang -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
