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-rw-r--r--arch/arm/mm/Kconfig41
1 files changed, 34 insertions, 7 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 67f75a0b66d..1a3ca248816 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -629,6 +629,23 @@ config IO_36
comment "Processor Features"
+config ARM_LPAE
+ bool "Support for the Large Physical Address Extension"
+ depends on MMU && CPU_V7
+ help
+ Say Y if you have an ARMv7 processor supporting the LPAE page
+ table format and you would like to access memory beyond the
+ 4GB limit. The resulting kernel image will not run on
+ processors without the LPA extension.
+
+ If unsure, say N.
+
+config ARCH_PHYS_ADDR_T_64BIT
+ def_bool ARM_LPAE
+
+config ARCH_DMA_ADDR_T_64BIT
+ bool
+
config ARM_THUMB
bool "Support Thumb user binaries"
depends on CPU_ARM720T || CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_V6 || CPU_V6K || CPU_V7 || CPU_FEROCEON
@@ -816,14 +833,23 @@ config CACHE_FEROCEON_L2_WRITETHROUGH
Say Y here to use the Feroceon L2 cache in writethrough mode.
Unless you specifically require this, say N for writeback mode.
+config MIGHT_HAVE_CACHE_L2X0
+ bool
+ help
+ This option should be selected by machines which have a L2x0
+ or PL310 cache controller, but where its use is optional.
+
+ The only effect of this option is to make CACHE_L2X0 and
+ related options available to the user for configuration.
+
+ Boards or SoCs which always require the cache controller
+ support to be present should select CACHE_L2X0 directly
+ instead of this option, thus preventing the user from
+ inadvertently configuring a broken kernel.
+
config CACHE_L2X0
- bool "Enable the L2x0 outer cache controller"
- depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176 || \
- REALVIEW_EB_A9MP || ARCH_IMX_V6_V7 || MACH_REALVIEW_PBX || \
- ARCH_NOMADIK || ARCH_OMAP4 || ARCH_EXYNOS4 || ARCH_TEGRA || \
- ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_SHMOBILE || \
- ARCH_PRIMA2 || ARCH_ZYNQ || ARCH_CNS3XXX || ARCH_HIGHBANK
- default y
+ bool "Enable the L2x0 outer cache controller" if MIGHT_HAVE_CACHE_L2X0
+ default MIGHT_HAVE_CACHE_L2X0
select OUTER_CACHE
select OUTER_CACHE_SYNC
help
@@ -856,6 +882,7 @@ config CACHE_XSC3L2
config ARM_L1_CACHE_SHIFT_6
bool
+ default y if CPU_V7
help
Setting ARM L1 cache line size to 64 Bytes.