2 * FreeRTOS SMP Kernel V202110.00
3 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
9 * the Software, and to permit persons to whom the Software is furnished to do so,
10 * subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 * https://www.FreeRTOS.org
23 * https://github.com/FreeRTOS
27 /*-----------------------------------------------------------
28 * Portable layer API. Each function must be defined for each port.
29 *----------------------------------------------------------*/
34 /* Each FreeRTOS port has a unique portmacro.h header file. Originally a
35 * pre-processor definition was used to ensure the pre-processor found the correct
36 * portmacro.h file for the port being used. That scheme was deprecated in favour
37 * of setting the compiler's include path such that it found the correct
38 * portmacro.h file - removing the need for the constant and allowing the
39 * portmacro.h file to be located anywhere in relation to the port being used.
40 * Purely for reasons of backward compatibility the old method is still valid, but
41 * to make it clear that new projects should not use it, support for the port
42 * specific constants has been moved into the deprecated_definitions.h header
44 #include "deprecated_definitions.h"
46 /* If portENTER_CRITICAL is not defined then including deprecated_definitions.h
47 * did not result in a portmacro.h header file being included - and it should be
48 * included here. In this case the path to the correct portmacro.h header file
49 * must be set in the compiler's include path. */
50 #ifndef portENTER_CRITICAL
51 #include "portmacro.h"
54 #if portBYTE_ALIGNMENT == 32
55 #define portBYTE_ALIGNMENT_MASK ( 0x001f )
58 #if portBYTE_ALIGNMENT == 16
59 #define portBYTE_ALIGNMENT_MASK ( 0x000f )
62 #if portBYTE_ALIGNMENT == 8
63 #define portBYTE_ALIGNMENT_MASK ( 0x0007 )
66 #if portBYTE_ALIGNMENT == 4
67 #define portBYTE_ALIGNMENT_MASK ( 0x0003 )
70 #if portBYTE_ALIGNMENT == 2
71 #define portBYTE_ALIGNMENT_MASK ( 0x0001 )
74 #if portBYTE_ALIGNMENT == 1
75 #define portBYTE_ALIGNMENT_MASK ( 0x0000 )
78 #ifndef portBYTE_ALIGNMENT_MASK
79 #error "Invalid portBYTE_ALIGNMENT definition"
82 #ifndef portNUM_CONFIGURABLE_REGIONS
83 #define portNUM_CONFIGURABLE_REGIONS 1
86 #ifndef portHAS_STACK_OVERFLOW_CHECKING
87 #define portHAS_STACK_OVERFLOW_CHECKING 0
91 #define portARCH_NAME NULL
100 #include "mpu_wrappers.h"
103 * Setup the stack of a new task so it is ready to be placed under the
104 * scheduler control. The registers have to be placed on the stack in
105 * the order that the port expects to find them.
108 #if ( portUSING_MPU_WRAPPERS == 1 )
109 #if ( portHAS_STACK_OVERFLOW_CHECKING == 1 )
110 StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
111 StackType_t * pxEndOfStack,
112 TaskFunction_t pxCode,
114 BaseType_t xRunPrivileged ) PRIVILEGED_FUNCTION;
116 StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
117 TaskFunction_t pxCode,
119 BaseType_t xRunPrivileged ) PRIVILEGED_FUNCTION;
121 #else /* if ( portUSING_MPU_WRAPPERS == 1 ) */
122 #if ( portHAS_STACK_OVERFLOW_CHECKING == 1 )
123 StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
124 StackType_t * pxEndOfStack,
125 TaskFunction_t pxCode,
126 void * pvParameters ) PRIVILEGED_FUNCTION;
128 StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
129 TaskFunction_t pxCode,
130 void * pvParameters ) PRIVILEGED_FUNCTION;
132 #endif /* if ( portUSING_MPU_WRAPPERS == 1 ) */
134 /* Used by heap_5.c to define the start address and size of each memory region
135 * that together comprise the total FreeRTOS heap space. */
136 typedef struct HeapRegion
138 uint8_t * pucStartAddress;
142 /* Used to pass information about the heap out of vPortGetHeapStats(). */
143 typedef struct xHeapStats
145 size_t xAvailableHeapSpaceInBytes; /* The total heap size currently available - this is the sum of all the free blocks, not the largest block that can be allocated. */
146 size_t xSizeOfLargestFreeBlockInBytes; /* The maximum size, in bytes, of all the free blocks within the heap at the time vPortGetHeapStats() is called. */
147 size_t xSizeOfSmallestFreeBlockInBytes; /* The minimum size, in bytes, of all the free blocks within the heap at the time vPortGetHeapStats() is called. */
148 size_t xNumberOfFreeBlocks; /* The number of free memory blocks within the heap at the time vPortGetHeapStats() is called. */
149 size_t xMinimumEverFreeBytesRemaining; /* The minimum amount of total free memory (sum of all free blocks) there has been in the heap since the system booted. */
150 size_t xNumberOfSuccessfulAllocations; /* The number of calls to pvPortMalloc() that have returned a valid memory block. */
151 size_t xNumberOfSuccessfulFrees; /* The number of calls to vPortFree() that has successfully freed a block of memory. */
155 * Used to define multiple heap regions for use by heap_5.c. This function
156 * must be called before any calls to pvPortMalloc() - not creating a task,
157 * queue, semaphore, mutex, software timer, event group, etc. will result in
158 * pvPortMalloc being called.
160 * pxHeapRegions passes in an array of HeapRegion_t structures - each of which
161 * defines a region of memory that can be used as the heap. The array is
162 * terminated by a HeapRegions_t structure that has a size of 0. The region
163 * with the lowest start address must appear first in the array.
165 void vPortDefineHeapRegions( const HeapRegion_t * const pxHeapRegions ) PRIVILEGED_FUNCTION;
168 * Returns a HeapStats_t structure filled with information about the current
171 void vPortGetHeapStats( HeapStats_t * pxHeapStats );
174 * Map to the memory management routines required for the port.
176 void * pvPortMalloc( size_t xSize ) PRIVILEGED_FUNCTION;
177 void vPortFree( void * pv ) PRIVILEGED_FUNCTION;
178 void vPortInitialiseBlocks( void ) PRIVILEGED_FUNCTION;
179 size_t xPortGetFreeHeapSize( void ) PRIVILEGED_FUNCTION;
180 size_t xPortGetMinimumEverFreeHeapSize( void ) PRIVILEGED_FUNCTION;
182 #if( configSTACK_ALLOCATION_FROM_SEPARATE_HEAP == 1 )
183 void *pvPortMallocStack( size_t xSize ) PRIVILEGED_FUNCTION;
184 void vPortFreeStack( void *pv ) PRIVILEGED_FUNCTION;
186 #define pvPortMallocStack pvPortMalloc
187 #define vPortFreeStack vPortFree
191 * Setup the hardware ready for the scheduler to take control. This generally
192 * sets up a tick interrupt and sets timers for the correct tick frequency.
194 BaseType_t xPortStartScheduler( void ) PRIVILEGED_FUNCTION;
197 * Undo any hardware/ISR setup that was performed by xPortStartScheduler() so
198 * the hardware is left in its original condition after the scheduler stops
201 void vPortEndScheduler( void ) PRIVILEGED_FUNCTION;
204 * The structures and methods of manipulating the MPU are contained within the
207 * Fills the xMPUSettings structure with the memory region information
208 * contained in xRegions.
210 #if ( portUSING_MPU_WRAPPERS == 1 )
211 struct xMEMORY_REGION;
212 void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
213 const struct xMEMORY_REGION * const xRegions,
214 StackType_t * pxBottomOfStack,
215 uint32_t ulStackDepth ) PRIVILEGED_FUNCTION;
224 #endif /* PORTABLE_H */