diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig index ee5e392430e87e4f45721320e33172f68e933e56..b4575ae9648ee7220ffb40d31359e8f12b7cecbb 100644 --- a/arch/arm/mach-realview/Kconfig +++ b/arch/arm/mach-realview/Kconfig @@ -18,6 +18,7 @@ config REALVIEW_EB_ARM11MP bool "Support ARM11MPCore tile" depends on MACH_REALVIEW_EB select CPU_V6 + select ARCH_HAS_BARRIERS if SMP help Enable support for the ARM11MPCore tile on the Realview platform. @@ -35,6 +36,7 @@ config MACH_REALVIEW_PB11MP select CPU_V6 select ARM_GIC select HAVE_PATA_PLATFORM + select ARCH_HAS_BARRIERS if SMP help Include support for the ARM(R) RealView MPCore Platform Baseboard. PB11MPCore is a platform with an on-board ARM11MPCore and has diff --git a/arch/arm/mach-realview/include/mach/barriers.h b/arch/arm/mach-realview/include/mach/barriers.h new file mode 100644 index 0000000000000000000000000000000000000000..0c5d749d7b5f17f8ad7241506a90dc8dc2d63a89 --- /dev/null +++ b/arch/arm/mach-realview/include/mach/barriers.h @@ -0,0 +1,8 @@ +/* + * Barriers redefined for RealView ARM11MPCore platforms with L220 cache + * controller to work around hardware errata causing the outer_sync() + * operation to deadlock the system. + */ +#define mb() dsb() +#define rmb() dmb() +#define wmb() mb()