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/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/arm/Kconfig') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 44789eff983..16a4b9e689b 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -344,6 +344,7 @@ config ARCH_HIGHBANK select CPU_V7 select GENERIC_CLOCKEVENTS select HAVE_ARM_SCU + select MIGHT_HAVE_CACHE_L2X0 select USE_OF help Support for the Calxeda Highbank SoC based boards. @@ -361,6 +362,7 @@ config ARCH_CNS3XXX select CPU_V6K select GENERIC_CLOCKEVENTS select ARM_GIC + select MIGHT_HAVE_CACHE_L2X0 select MIGHT_HAVE_PCI select PCI_DOMAINS if PCI help @@ -381,6 +383,7 @@ config ARCH_PRIMA2 select GENERIC_CLOCKEVENTS select CLKDEV_LOOKUP select GENERIC_IRQ_CHIP + select MIGHT_HAVE_CACHE_L2X0 select USE_OF select ZONE_DMA help @@ -633,6 +636,7 @@ config ARCH_TEGRA select GENERIC_GPIO select HAVE_CLK select HAVE_SCHED_CLOCK + select MIGHT_HAVE_CACHE_L2X0 select ARCH_HAS_CPUFREQ help This enables support for NVIDIA Tegra based systems (Tegra APX, @@ -703,6 +707,7 @@ config ARCH_SHMOBILE select CLKDEV_LOOKUP select HAVE_MACH_CLKDEV select GENERIC_CLOCKEVENTS + select MIGHT_HAVE_CACHE_L2X0 select NO_IOPORT select SPARSE_IRQ select MULTI_IRQ_HANDLER @@ -904,6 +909,7 @@ config ARCH_U8500 select CLKDEV_LOOKUP select ARCH_REQUIRE_GPIOLIB select ARCH_HAS_CPUFREQ + select MIGHT_HAVE_CACHE_L2X0 help Support for ST-Ericsson's Ux500 architecture @@ -914,6 +920,7 @@ config ARCH_NOMADIK select CPU_ARM926T select CLKDEV_LOOKUP select GENERIC_CLOCKEVENTS + select MIGHT_HAVE_CACHE_L2X0 select ARCH_REQUIRE_GPIOLIB help Support for the Nomadik platform by ST-Ericsson @@ -973,6 +980,7 @@ config ARCH_ZYNQ select ARM_GIC select ARM_AMBA select ICST + select MIGHT_HAVE_CACHE_L2X0 select USE_OF help Support for Xilinx Zynq ARM Cortex A9 Platform -- cgit v1.2.3-18-g5258