2 * FreeRTOS Kernel V10.6.1
3 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
5 * SPDX-License-Identifier: MIT
7 * Permission is hereby granted, free of charge, to any person obtaining a copy of
8 * this software and associated documentation files (the "Software"), to deal in
9 * the Software without restriction, including without limitation the rights to
10 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
11 * the Software, and to permit persons to whom the Software is furnished to do so,
12 * subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in all
15 * copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
19 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
20 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
21 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 * https://www.FreeRTOS.org
25 * https://github.com/FreeRTOS
29 #ifndef PORTMACROCOMMON_H
30 #define PORTMACROCOMMON_H
38 /*------------------------------------------------------------------------------
39 * Port specific definitions.
41 * The settings in this file configure FreeRTOS correctly for the given hardware
44 * These settings should not be altered.
45 *------------------------------------------------------------------------------
48 #ifndef configENABLE_FPU
49 #error configENABLE_FPU must be defined in FreeRTOSConfig.h. Set configENABLE_FPU to 1 to enable the FPU or 0 to disable the FPU.
50 #endif /* configENABLE_FPU */
52 #ifndef configENABLE_MPU
53 #error configENABLE_MPU must be defined in FreeRTOSConfig.h. Set configENABLE_MPU to 1 to enable the MPU or 0 to disable the MPU.
54 #endif /* configENABLE_MPU */
56 #ifndef configENABLE_TRUSTZONE
57 #error configENABLE_TRUSTZONE must be defined in FreeRTOSConfig.h. Set configENABLE_TRUSTZONE to 1 to enable TrustZone or 0 to disable TrustZone.
58 #endif /* configENABLE_TRUSTZONE */
60 /*-----------------------------------------------------------*/
63 * @brief Type definitions.
66 #define portFLOAT float
67 #define portDOUBLE double
69 #define portSHORT short
70 #define portSTACK_TYPE uint32_t
71 #define portBASE_TYPE long
73 typedef portSTACK_TYPE StackType_t;
74 typedef long BaseType_t;
75 typedef unsigned long UBaseType_t;
77 #if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
78 typedef uint16_t TickType_t;
79 #define portMAX_DELAY ( TickType_t ) 0xffff
80 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
81 typedef uint32_t TickType_t;
82 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
84 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
85 * not need to be guarded with a critical section. */
86 #define portTICK_TYPE_IS_ATOMIC 1
88 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
90 /*-----------------------------------------------------------*/
93 * Architecture specifics.
95 #define portSTACK_GROWTH ( -1 )
96 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
97 #define portBYTE_ALIGNMENT 8
99 #define portINLINE __inline
100 #ifndef portFORCE_INLINE
101 #define portFORCE_INLINE inline __attribute__( ( always_inline ) )
103 #define portHAS_STACK_OVERFLOW_CHECKING 1
104 /*-----------------------------------------------------------*/
107 * @brief Extern declarations.
109 extern BaseType_t xPortIsInsideInterrupt( void );
111 extern void vPortYield( void ) /* PRIVILEGED_FUNCTION */;
113 extern void vPortEnterCritical( void ) /* PRIVILEGED_FUNCTION */;
114 extern void vPortExitCritical( void ) /* PRIVILEGED_FUNCTION */;
116 extern uint32_t ulSetInterruptMask( void ) /* __attribute__(( naked )) PRIVILEGED_FUNCTION */;
117 extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) PRIVILEGED_FUNCTION */;
119 #if ( configENABLE_TRUSTZONE == 1 )
120 extern void vPortAllocateSecureContext( uint32_t ulSecureStackSize ); /* __attribute__ (( naked )) */
121 extern void vPortFreeSecureContext( uint32_t * pulTCB ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */;
122 #endif /* configENABLE_TRUSTZONE */
124 #if ( configENABLE_MPU == 1 )
125 extern BaseType_t xIsPrivileged( void ) /* __attribute__ (( naked )) */;
126 extern void vResetPrivilege( void ) /* __attribute__ (( naked )) */;
127 #endif /* configENABLE_MPU */
128 /*-----------------------------------------------------------*/
131 * @brief MPU specific constants.
133 #if ( configENABLE_MPU == 1 )
134 #define portUSING_MPU_WRAPPERS 1
135 #define portPRIVILEGE_BIT ( 0x80000000UL )
137 #define portPRIVILEGE_BIT ( 0x0UL )
138 #endif /* configENABLE_MPU */
140 /* MPU settings that can be overriden in FreeRTOSConfig.h. */
141 #ifndef configTOTAL_MPU_REGIONS
142 /* Define to 8 for backward compatibility. */
143 #define configTOTAL_MPU_REGIONS ( 8UL )
147 #define portPRIVILEGED_FLASH_REGION ( 0UL )
148 #define portUNPRIVILEGED_FLASH_REGION ( 1UL )
149 #define portUNPRIVILEGED_SYSCALLS_REGION ( 2UL )
150 #define portPRIVILEGED_RAM_REGION ( 3UL )
151 #define portSTACK_REGION ( 4UL )
152 #define portFIRST_CONFIGURABLE_REGION ( 5UL )
153 #define portLAST_CONFIGURABLE_REGION ( configTOTAL_MPU_REGIONS - 1UL )
154 #define portNUM_CONFIGURABLE_REGIONS ( ( portLAST_CONFIGURABLE_REGION - portFIRST_CONFIGURABLE_REGION ) + 1 )
155 #define portTOTAL_NUM_REGIONS ( portNUM_CONFIGURABLE_REGIONS + 1 ) /* Plus one to make space for the stack region. */
157 /* Device memory attributes used in MPU_MAIR registers.
159 * 8-bit values encoded as follows:
160 * Bit[7:4] - 0000 - Device Memory
161 * Bit[3:2] - 00 --> Device-nGnRnE
162 * 01 --> Device-nGnRE
165 * Bit[1:0] - 00, Reserved.
167 #define portMPU_DEVICE_MEMORY_nGnRnE ( 0x00 ) /* 0000 0000 */
168 #define portMPU_DEVICE_MEMORY_nGnRE ( 0x04 ) /* 0000 0100 */
169 #define portMPU_DEVICE_MEMORY_nGRE ( 0x08 ) /* 0000 1000 */
170 #define portMPU_DEVICE_MEMORY_GRE ( 0x0C ) /* 0000 1100 */
172 /* Normal memory attributes used in MPU_MAIR registers. */
173 #define portMPU_NORMAL_MEMORY_NON_CACHEABLE ( 0x44 ) /* Non-cacheable. */
174 #define portMPU_NORMAL_MEMORY_BUFFERABLE_CACHEABLE ( 0xFF ) /* Non-Transient, Write-back, Read-Allocate and Write-Allocate. */
176 /* Attributes used in MPU_RBAR registers. */
177 #define portMPU_REGION_NON_SHAREABLE ( 0UL << 3UL )
178 #define portMPU_REGION_INNER_SHAREABLE ( 1UL << 3UL )
179 #define portMPU_REGION_OUTER_SHAREABLE ( 2UL << 3UL )
181 #define portMPU_REGION_PRIVILEGED_READ_WRITE ( 0UL << 1UL )
182 #define portMPU_REGION_READ_WRITE ( 1UL << 1UL )
183 #define portMPU_REGION_PRIVILEGED_READ_ONLY ( 2UL << 1UL )
184 #define portMPU_REGION_READ_ONLY ( 3UL << 1UL )
186 #define portMPU_REGION_EXECUTE_NEVER ( 1UL )
187 /*-----------------------------------------------------------*/
189 #if ( configENABLE_MPU == 1 )
192 * @brief Settings to define an MPU region.
194 typedef struct MPURegionSettings
196 uint32_t ulRBAR; /**< RBAR for the region. */
197 uint32_t ulRLAR; /**< RLAR for the region. */
198 } MPURegionSettings_t;
200 #if ( configUSE_MPU_WRAPPERS_V1 == 0 )
202 #ifndef configSYSTEM_CALL_STACK_SIZE
203 #error configSYSTEM_CALL_STACK_SIZE must be defined to the desired size of the system call stack in words for using MPU wrappers v2.
207 * @brief System call stack.
209 typedef struct SYSTEM_CALL_STACK_INFO
211 uint32_t ulSystemCallStackBuffer[ configSYSTEM_CALL_STACK_SIZE ];
212 uint32_t * pulSystemCallStack;
213 uint32_t * pulSystemCallStackLimit;
214 uint32_t * pulTaskStack;
215 uint32_t ulLinkRegisterAtSystemCallEntry;
216 uint32_t ulStackLimitRegisterAtSystemCallEntry;
217 } xSYSTEM_CALL_STACK_INFO;
219 #endif /* configUSE_MPU_WRAPPERS_V1 == 0 */
222 * @brief MPU settings as stored in the TCB.
224 #if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) )
226 #if( configENABLE_TRUSTZONE == 1 )
229 * +-----------+---------------+----------+-----------------+------------------------------+-----+
230 * | s16-s31 | s0-s15, FPSCR | r4-r11 | r0-r3, r12, LR, | xSecureContext, PSP, PSPLIM, | |
231 * | | | | PC, xPSR | CONTROL, EXC_RETURN | |
232 * +-----------+---------------+----------+-----------------+------------------------------+-----+
234 * <-----------><--------------><---------><----------------><-----------------------------><---->
237 #define MAX_CONTEXT_SIZE 54
239 #else /* #if( configENABLE_TRUSTZONE == 1 ) */
242 * +-----------+---------------+----------+-----------------+----------------------+-----+
243 * | s16-s31 | s0-s15, FPSCR | r4-r11 | r0-r3, r12, LR, | PSP, PSPLIM, CONTROL | |
244 * | | | | PC, xPSR | EXC_RETURN | |
245 * +-----------+---------------+----------+-----------------+----------------------+-----+
247 * <-----------><--------------><---------><----------------><---------------------><---->
250 #define MAX_CONTEXT_SIZE 53
252 #endif /* #if( configENABLE_TRUSTZONE == 1 ) */
254 #else /* #if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) ) */
256 #if( configENABLE_TRUSTZONE == 1 )
259 * +----------+-----------------+------------------------------+-----+
260 * | r4-r11 | r0-r3, r12, LR, | xSecureContext, PSP, PSPLIM, | |
261 * | | PC, xPSR | CONTROL, EXC_RETURN | |
262 * +----------+-----------------+------------------------------+-----+
264 * <---------><----------------><------------------------------><---->
267 #define MAX_CONTEXT_SIZE 22
269 #else /* #if( configENABLE_TRUSTZONE == 1 ) */
272 * +----------+-----------------+----------------------+-----+
273 * | r4-r11 | r0-r3, r12, LR, | PSP, PSPLIM, CONTROL | |
274 * | | PC, xPSR | EXC_RETURN | |
275 * +----------+-----------------+----------------------+-----+
277 * <---------><----------------><----------------------><---->
280 #define MAX_CONTEXT_SIZE 21
282 #endif /* #if( configENABLE_TRUSTZONE == 1 ) */
284 #endif /* #if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) ) */
286 /* Flags used for xMPU_SETTINGS.ulTaskFlags member. */
287 #define portSTACK_FRAME_HAS_PADDING_FLAG ( 1UL << 0UL )
288 #define portTASK_IS_PRIVILEGED_FLAG ( 1UL << 1UL )
290 /* Size of an Access Control List (ACL) entry in bits. */
291 #define portACL_ENTRY_SIZE_BITS ( 32U )
293 typedef struct MPU_SETTINGS
295 uint32_t ulMAIR0; /**< MAIR0 for the task containing attributes for all the 4 per task regions. */
296 MPURegionSettings_t xRegionsSettings[ portTOTAL_NUM_REGIONS ]; /**< Settings for 4 per task regions. */
297 uint32_t ulContext[ MAX_CONTEXT_SIZE ];
298 uint32_t ulTaskFlags;
300 #if ( configUSE_MPU_WRAPPERS_V1 == 0 )
301 xSYSTEM_CALL_STACK_INFO xSystemCallStackInfo;
302 #if ( configENABLE_ACCESS_CONTROL_LIST == 1 )
303 uint32_t ulAccessControlList[ ( configPROTECTED_KERNEL_OBJECT_POOL_SIZE / portACL_ENTRY_SIZE_BITS ) + 1 ];
308 #endif /* configENABLE_MPU == 1 */
309 /*-----------------------------------------------------------*/
312 * @brief Validate priority of ISRs that are allowed to call FreeRTOS
316 #if ( portHAS_BASEPRI == 1 )
317 void vPortValidateInterruptPriority( void );
318 #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
323 * @brief SVC numbers.
325 #define portSVC_ALLOCATE_SECURE_CONTEXT 100
326 #define portSVC_FREE_SECURE_CONTEXT 101
327 #define portSVC_START_SCHEDULER 102
328 #define portSVC_RAISE_PRIVILEGE 103
329 #define portSVC_SYSTEM_CALL_EXIT 104
330 #define portSVC_YIELD 105
331 /*-----------------------------------------------------------*/
334 * @brief Scheduler utilities.
336 #define portYIELD() vPortYield()
337 #define portNVIC_INT_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000ed04 ) )
338 #define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
339 #define portEND_SWITCHING_ISR( xSwitchRequired ) \
340 do { if( xSwitchRequired ) portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT; } \
342 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
343 /*-----------------------------------------------------------*/
346 * @brief Critical section management.
348 #define portSET_INTERRUPT_MASK_FROM_ISR() ulSetInterruptMask()
349 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vClearInterruptMask( x )
350 #define portENTER_CRITICAL() vPortEnterCritical()
351 #define portEXIT_CRITICAL() vPortExitCritical()
352 /*-----------------------------------------------------------*/
355 * @brief Tickless idle/low power functionality.
357 #ifndef portSUPPRESS_TICKS_AND_SLEEP
358 extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
359 #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
361 /*-----------------------------------------------------------*/
364 * @brief Task function macros as described on the FreeRTOS.org WEB site.
366 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
367 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
368 /*-----------------------------------------------------------*/
370 #if ( configENABLE_TRUSTZONE == 1 )
373 * @brief Allocate a secure context for the task.
375 * Tasks are not created with a secure context. Any task that is going to call
376 * secure functions must call portALLOCATE_SECURE_CONTEXT() to allocate itself a
377 * secure context before it calls any secure function.
379 * @param[in] ulSecureStackSize The size of the secure stack to be allocated.
381 #define portALLOCATE_SECURE_CONTEXT( ulSecureStackSize ) vPortAllocateSecureContext( ulSecureStackSize )
384 * @brief Called when a task is deleted to delete the task's secure context,
387 * @param[in] pxTCB The TCB of the task being deleted.
389 #define portCLEAN_UP_TCB( pxTCB ) vPortFreeSecureContext( ( uint32_t * ) pxTCB )
390 #endif /* configENABLE_TRUSTZONE */
391 /*-----------------------------------------------------------*/
393 #if ( configENABLE_MPU == 1 )
396 * @brief Checks whether or not the processor is privileged.
398 * @return 1 if the processor is already privileged, 0 otherwise.
400 #define portIS_PRIVILEGED() xIsPrivileged()
403 * @brief Raise an SVC request to raise privilege.
405 * The SVC handler checks that the SVC was raised from a system call and only
406 * then it raises the privilege. If this is called from any other place,
407 * the privilege is not raised.
409 #define portRAISE_PRIVILEGE() __asm volatile ( "svc %0 \n" ::"i" ( portSVC_RAISE_PRIVILEGE ) : "memory" );
412 * @brief Lowers the privilege level by setting the bit 0 of the CONTROL
415 #define portRESET_PRIVILEGE() vResetPrivilege()
417 #define portIS_PRIVILEGED()
418 #define portRAISE_PRIVILEGE()
419 #define portRESET_PRIVILEGE()
420 #endif /* configENABLE_MPU */
421 /*-----------------------------------------------------------*/
423 #if ( configENABLE_MPU == 1 )
425 extern BaseType_t xPortIsTaskPrivileged( void );
428 * @brief Checks whether or not the calling task is privileged.
430 * @return pdTRUE if the calling task is privileged, pdFALSE otherwise.
432 #define portIS_TASK_PRIVILEGED() xPortIsTaskPrivileged()
434 #endif /* configENABLE_MPU == 1 */
435 /*-----------------------------------------------------------*/
440 #define portMEMORY_BARRIER() __asm volatile ( "" ::: "memory" )
441 /*-----------------------------------------------------------*/
449 #endif /* PORTMACROCOMMON_H */