From ce5ea9f3767e8589521319cae2eb6e05c52bd056 Mon Sep 17 00:00:00 2001 From: Dave Martin Date: Tue, 29 Nov 2011 15:56:19 +0000 Subject: ARM: l2x0/pl310: Refactor Kconfig to be more maintainable Making CACHE_L2X0 depend on (huge list of MACH_ and ARCH_ configs) is bothersome to maintain and likely to lead to merge conflicts. This patch moves the knowledge of which platforms have a L2x0 or PL310 cache controller to the individual machines. To enable this, a new MIGHT_HAVE_CACHE_L2X0 config option is introduced to allow machines to indicate that they may have such a cache controller independently of each other. Boards/SoCs which cannot reliably operate without the L2 cache controller support will need to select CACHE_L2X0 directly from their own Kconfigs instead. This applies to some TrustZone-enabled boards where Linux runs in the Normal World, for example. Signed-off-by: Dave Martin Acked-by: Anton Vorontsov (for cns3xxx) Acked-by: Tony Lindgren (for omap) Acked-by: Shawn Guo (for imx) Acked-by: Kukjin Kim (for exynos) Acked-by: Sascha Hauer (for imx) Acked-by: Olof Johansson (for tegra) --- arch/arm/mach-realview/Kconfig | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/arm/mach-realview/Kconfig') diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig index dba6d0c1fc17..3dd620f8dd9b 100644 --- a/arch/arm/mach-realview/Kconfig +++ b/arch/arm/mach-realview/Kconfig @@ -12,6 +12,7 @@ config REALVIEW_EB_A9MP bool "Support Multicore Cortex-A9 Tile" depends on MACH_REALVIEW_EB select CPU_V7 + select MIGHT_HAVE_CACHE_L2X0 help Enable support for the Cortex-A9MPCore tile fitted to the Realview(R) Emulation Baseboard platform. @@ -21,6 +22,7 @@ config REALVIEW_EB_ARM11MP depends on MACH_REALVIEW_EB select CPU_V6K select ARCH_HAS_BARRIERS if SMP + select MIGHT_HAVE_CACHE_L2X0 help Enable support for the ARM11MPCore tile fitted to the Realview(R) Emulation Baseboard platform. @@ -39,6 +41,7 @@ config MACH_REALVIEW_PB11MP select CPU_V6K select ARM_GIC select HAVE_PATA_PLATFORM + select MIGHT_HAVE_CACHE_L2X0 select ARCH_HAS_BARRIERS if SMP help Include support for the ARM(R) RealView(R) Platform Baseboard for @@ -51,6 +54,7 @@ config MACH_REALVIEW_PB1176 select CPU_V6 select ARM_GIC select HAVE_TCM + select MIGHT_HAVE_CACHE_L2X0 help Include support for the ARM(R) RealView(R) Platform Baseboard for ARM1176JZF-S. @@ -78,6 +82,7 @@ config MACH_REALVIEW_PBX bool "Support RealView(R) Platform Baseboard Explore" select ARM_GIC select HAVE_PATA_PLATFORM + select MIGHT_HAVE_CACHE_L2X0 select ARCH_SPARSEMEM_ENABLE if CPU_V7 && !REALVIEW_HIGH_PHYS_OFFSET select ZONE_DMA if SPARSEMEM help -- cgit