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[v6,18/18] ARM: LPAE: Add the Kconfig entries

Message ID 1306273164-18217-19-git-send-email-catalin.marinas@arm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Catalin Marinas May 24, 2011, 9:39 p.m. UTC 
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>
---
 arch/arm/Kconfig    |    2 +-
 arch/arm/mm/Kconfig |   13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletions(-)
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Patch

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e18c2c2..c7b01b0 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1774,7 +1774,7 @@  config CMDLINE_FORCE
 
 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 490c231..afb5231 100644
--- 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