Add ARMv7-R MPU Port (#938)

* Apply git review patch created by @aggargr
* Add necessary changes to the CMakeLists.txt file to build the port

.github/.cSpellWords.txt

@@ -549,6 +549,10 @@ NTRST
 NVIC
 ODAT
 ODSR
+OINC
+OIWBNOWA
+OIWBWA
+OIWTNOWA
 OPMOD
 optimisations
 OPTIMISED
@@ -795,6 +799,15 @@ SWRST
 SWTRG
 synchronise
 SYSC
+sysclk
+Sysclk
+SysClk
+SYSClk
+SYSCLK
+sysclock
+Sysclock
+SysClock
+SYSCLOCK
 TACCR
 TACCTL
 TACLR
@@ -877,6 +890,9 @@ UNDADD
 unpadded
 Unpadded
 UNPADDED
+unprotect
+Unprotect
+Unprotected
 UNRE
 UNSUB
 UNSUBACK

.github/scripts/kernel_checker.py

@@ -37,7 +37,8 @@
     'FreeRTOS-openocd.c',
     'Makefile',
     '.DS_Store',
-    'cspell.config.yaml'
+    'cspell.config.yaml',
+    '.clang-format'
 ]
 
 KERNEL_IGNORED_EXTENSIONS = [

.github/workflows/formatting.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
     - name: Apply Formatting Fix
-      id: check-formatting  
+      id: check-formatting
       uses: FreeRTOS/CI-CD-Github-Actions/formatting-bot@main
       with:
         exclude-dirs: portable

CMakeLists.txt

@@ -85,6 +85,7 @@ if(NOT FREERTOS_PORT)
         " GCC_ARM_CM85_NTZ_NONSECURE       - Compiler: GCC           Target: ARM Cortex-M85 non-trustzone non-secure\n"
         " GCC_ARM_CM85_TFM                 - Compiler: GCC           Target: ARM Cortex-M85 non-secure for TF-M\n"
         " GCC_ARM_CR5                      - Compiler: GCC           Target: ARM Cortex-R5\n"
+        " GCC_ARM_CRX_MPU                  - Compiler: GCC           Target: ARM Cortex-Rx with MPU\n"
         " GCC_ARM_CRX_NOGIC                - Compiler: GCC           Target: ARM Cortex-Rx no GIC\n"
         " GCC_ARM7_AT91FR40008             - Compiler: GCC           Target: ARM7 Atmel AT91R40008\n"
         " GCC_ARM7_AT91SAM7S               - Compiler: GCC           Target: ARM7 Atmel AT91SAM7S\n"

portable/CMakeLists.txt

@@ -207,6 +207,11 @@ add_library(freertos_kernel_port OBJECT
         GCC/ARM_CR5/port.c
         GCC/ARM_CR5/portASM.S>
 
+    $<$<STREQUAL:${FREERTOS_PORT},GCC_ARM_CRX_MPU>:
+        GCC/ARM_CRx_MPU/port.c
+        GCC/ARM_CRx_MPU/portASM.S
+        GCC/ARM_CRx_MPU/mpu_wrappers_v2_asm.S>
+
     $<$<STREQUAL:${FREERTOS_PORT},GCC_ARM_CRX_NOGIC>:
         GCC/ARM_CRx_No_GIC/port.c
         GCC/ARM_CRx_No_GIC/portASM.S>
@@ -836,6 +841,7 @@ target_include_directories(freertos_kernel_port_headers INTERFACE
 
     # ARMv7-R ports for GCC
     $<$<STREQUAL:${FREERTOS_PORT},GCC_ARM_CR5>:${CMAKE_CURRENT_LIST_DIR}/GCC/ARM_CR5>
+    $<$<STREQUAL:${FREERTOS_PORT},GCC_ARM_CRX_MPU>:${CMAKE_CURRENT_LIST_DIR}/GCC/ARM_CRx_MPU>
     $<$<STREQUAL:${FREERTOS_PORT},GCC_ARM_CRX_NOGIC>:${CMAKE_CURRENT_LIST_DIR}/GCC/ARM_CRx_No_GIC>
 
     # ARMv4T ARM7TDMI ports for GCC