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soc: arm: stm32f4: Add Initial MPU Support

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This patch adds initial MPU support to STM32F401XE.
The boot configuration prevents the following security issues:
* Prevent to read at an address that is reserved in the memory map.
* Prevent to write into the boot Flash/ROM.
* Prevent the application to access to the BootROM.
* Prevent from running code located in SRAM.

Change-Id: I4dc0669009bd5c0a829a69f8ff417c787b7043ed
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@linaro.org>
This commit is contained in:
Vincenzo Frascino 2017-03-10 01:51:22 +00:00 • committed by Kumar Gala
commit 5951e45580
5 changed files with 145 additions and 0 deletions
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20
arch/arm/soc/st_stm32/stm32f4/Kconfig.soc
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@ -22,3 +22,23 @@ config SOC_STM32F429XX
bool "STM32F429XX"
endchoice
config STM32_ARM_MPU_ENABLE
bool "Enable MPU"
depends on CPU_HAS_MPU
select ARM_MPU
default n
help
Enable MPU
choice
prompt "Configure Bootloader Options"
depends on MPU_ENABLE
config BL_BOOTLOADER
bool "Build the Bootloader"
config BL_APPLICATION
bool "Build an Application"
endchoice