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 2c71a8f3535a1400c2d187e7fa612e00995e6927..2a81b907ab24dcc0bd8449b2b01523efca048aa1 100644 (file)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1820,7 +1820,7 @@ 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 88633fe01a5dcdc2641afdd3d5010948a3263b73..2df55042f166362317b9e2208b45dab9125e76c2 100644 (file)
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -629,6 +629,19 @@ 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.
+
+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