[PATCH v4 4/7] arm/mpu: Kconfig symbols for MPU build

[Luca Fancellu <luca.fancellu@xxxxxxx>]

The MPU system requires static memory to work, select that
when building this memory management subsystem.

While there, provide a restriction for the ARM_EFI Kconfig
parameter to be built only when !MPU, the EFI stub is not
used as there are no implementation of UEFI services for
armv8-r.

Signed-off-by: Luca Fancellu <luca.fancellu@xxxxxxx>
Reviewed-by: Michal Orzel <michal.orzel@xxxxxxx>
---
v4 changes:
 - no changes
v3 changes:
 - No changes
v2 changes:
 - clarified commit message about static memory
 - Add R-by Michal
---
 xen/arch/arm/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 466b7db63cfd..7a7658812d0e 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -85,6 +85,7 @@ config MMU
 
 config MPU
        bool "MPU" if UNSUPPORTED
+       select STATIC_MEMORY
        help
          Memory Protection Unit (MPU). Select if you plan to run Xen on ARMv8-R
          systems supporting EL2. (UNSUPPORTED)
@@ -102,7 +103,7 @@ config ACPI
 
 config ARM_EFI
        bool "UEFI boot service support"
-       depends on ARM_64
+       depends on ARM_64 && !MPU
        default y
        help
          This option provides support for boot services through
-- 
2.34.1