ARM: LPAE: Add the Kconfig entries

This patch adds the ARM_LPAE and ARCH_PHYS_ADDR_T_64BIT Kconfig entries
allowing LPAE support to be compiled into the kernel.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 44789eff983f444c22cd967cbe418f7e50159358..885c04e394009a629e4429f88657a39b39b6e377 100644 (file)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1959,7 +1959,7 @@ endchoice
 
 config XIP_KERNEL
        bool "Kernel Execute-In-Place from ROM"
-       depends on !ZBOOT_ROM
+       depends on !ZBOOT_ROM && !ARM_LPAE
        help
          Execute-In-Place allows the kernel to run from non-volatile storage
          directly addressable by the CPU, such as NOR flash. This saves RAM

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 67f75a0b66d640c4ffdd44b74fc2ac37e8b0063d..d289cdb161ea6a37183bcd2c39ee7be823fc4e3d 100644 (file)
--- 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
+       def_bool ARM_LPAE
+
 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