arm: v7: Kconfig: Add entry for MMU

Add a Kconfig entry for MMU and imply for all platforms using
cache-cp15.c containing MMU setup. Using imply instead of select so that
MMU can be disabled by defconfigs when not needed.

Tested-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 576b8f5874c26116f5cfffe7ed583b5cd1c7fbf1..5ff6809e94cad5733ac7e31fe18fbf602acab89d 100644 (file)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -74,6 +74,12 @@ config ARM_ASM_UNIFIED
 config THUMB2_KERNEL
        bool
 
+config SYS_ARM_MMU
+       bool "MMU-based Paged Memory Management Support"
+       help
+         Select if you want MMU-based virtualised addressing space
+         support by paged memory management.
+
 # If set, the workarounds for these ARM errata are applied early during U-Boot
 # startup. Note that in general these options force the workarounds to be
 # applied; no CPU-type/version detection exists, unlike the similar options in
@@ -158,33 +164,40 @@ config ARM_ERRATA_855873
 config CPU_ARM720T
        bool
        select SYS_CACHE_SHIFT_5
+       imply SYS_ARM_MMU
 
 config CPU_ARM920T
        bool
        select SYS_CACHE_SHIFT_5
+       imply SYS_ARM_MMU
 
 config CPU_ARM926EJS
        bool
        select SYS_CACHE_SHIFT_5
+       imply SYS_ARM_MMU
 
 config CPU_ARM946ES
        bool
        select SYS_CACHE_SHIFT_5
+       imply SYS_ARM_MMU
 
 config CPU_ARM1136
        bool
        select SYS_CACHE_SHIFT_5
+       imply SYS_ARM_MMU
 
 config CPU_ARM1176
        bool
        select HAS_VBAR
        select SYS_CACHE_SHIFT_5
+       imply SYS_ARM_MMU
 
 config CPU_V7A
        bool
        select HAS_VBAR
        select HAS_THUMB2
        select SYS_CACHE_SHIFT_6
+       imply SYS_ARM_MMU
 
 config CPU_V7M
        bool
@@ -195,10 +208,12 @@ config CPU_V7M
 config CPU_PXA
        bool
        select SYS_CACHE_SHIFT_5
+       imply SYS_ARM_MMU
 
 config CPU_SA1100
        bool
        select SYS_CACHE_SHIFT_5
+       imply SYS_ARM_MMU
 
 config SYS_CPU
        default "arm720t" if CPU_ARM720T