Added two config options to the FreeRTOSConfig file to get the demo running again. Fixed a typo in a file. Added a section to the link file (#940)

Co-authored-by: Soren Ptak <skptak@amazon.com>

FreeRTOS/Demo/CORTEX_MPU_Static_Simulator_Keil_GCC/FreeRTOSConfig.h

@@ -148,7 +148,7 @@ standard names. */
 
 /* Normal assert() semantics without relying on the provision of an assert.h
 header file. */
-#define configASSERT( x ) if( ( x ) == 0UL ) { portDISABLE_INTERRUPTS(); for( ;; ); }
+#define configASSERT( x ) if( ! ( x ) ) { portDISABLE_INTERRUPTS(); for( ;; ); }
 
 /* LED not used at present, so just increment a variable to keep a count of the
 number of times the LED would otherwise have been toggled. */
@@ -166,6 +166,11 @@ solely for the purpose of ensuring parameters are passed into tasks correctly. *
 #define configREG_TEST_TASK_3_PARAMETER	( ( void * ) 0x12345678 )
 #define configREG_TEST_TASK_4_PARAMETER	( ( void * ) 0x87654321 )
 
+/* Ensure that all system calls are coming from the kernel
+Additionally allow unprivileged tasks to have critical sections. */
+#define configENFORCE_SYSTEM_CALLS_FROM_KERNEL_ONLY 1
+#define configALLOW_UNPRIVILEGED_CRITICAL_SECTIONS 1
+
 #ifdef __cplusplus
 }
 #endif

FreeRTOS/Demo/CORTEX_MPU_Static_Simulator_Keil_GCC/GCC_Specific/sections.ld

@@ -156,6 +156,13 @@ SECTIONS
         PROVIDE_HIDDEN (__fini_array_end = .);
         . = ALIGN(4);
 
+        /* Set start of system calls to here */
+        __syscalls_flash_start__ = .;
+        /* Place all FreeRTOS System calls here */
+        *(freertos_system_calls)
+        __syscalls_flash_end__ = .;
+        /* Mark the end of the system calls */
+
         . = ALIGN(4);
 
         *(.text*)            /* all remaining code */

FreeRTOS/Demo/CORTEX_MPU_Static_Simulator_Keil_GCC/GCC_Specific/startup_ARMCM4.S

@@ -4,7 +4,7 @@
  * Version: V2.0
  * Date: 16 August 2013
  *
-/* Copyright (c) 2011 - 2013 ARM LIMITED
+ * Copyright (c) 2011 - 2013 ARM LIMITED
 
    All rights reserved.
    Redistribution and use in source and binary forms, with or without