--- zzzz-none-000/linux-3.10.107/arch/arm/Kconfig-nommu 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/arch/arm/Kconfig-nommu 2021-02-04 17:41:59.000000000 +0000 @@ -28,7 +28,7 @@ config PROCESSOR_ID hex 'Hard wire the processor ID' default 0x00007700 - depends on !CPU_CP15 + depends on !(CPU_CP15 || CPU_V7M) help If processor has no CP15 register, this processor ID is used instead of the auto-probing which utilizes the register. @@ -50,3 +50,15 @@ Otherwise, say 'y' here. In this case, the kernel will require external support to redirect the hardware exception vectors to the writable versions located at DRAM_BASE. + +config ARM_MPU + bool 'Use the ARM v7 PMSA Compliant MPU' + depends on CPU_V7 + default y + help + Some ARM systems without an MMU have instead a Memory Protection + Unit (MPU) that defines the type and permissions for regions of + memory. + + If your CPU has an MPU then you should choose 'y' here unless you + know that you do not want to use the MPU.