2 * FreeRTOS Kernel V10.5.1
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
36 /*------------------------------------------------------------------------------
37 * Port specific definitions.
39 * The settings in this file configure FreeRTOS correctly for the given hardware
42 * These settings should not be altered.
43 *------------------------------------------------------------------------------
46 #ifndef configENABLE_FPU
47 #error configENABLE_FPU must be defined in FreeRTOSConfig.h. Set configENABLE_FPU to 1 to enable the FPU or 0 to disable the FPU.
48 #endif /* configENABLE_FPU */
50 #ifndef configENABLE_MPU
51 #error configENABLE_MPU must be defined in FreeRTOSConfig.h. Set configENABLE_MPU to 1 to enable the MPU or 0 to disable the MPU.
52 #endif /* configENABLE_MPU */
54 #ifndef configENABLE_TRUSTZONE
55 #error configENABLE_TRUSTZONE must be defined in FreeRTOSConfig.h. Set configENABLE_TRUSTZONE to 1 to enable TrustZone or 0 to disable TrustZone.
56 #endif /* configENABLE_TRUSTZONE */
58 /*-----------------------------------------------------------*/
61 * @brief Type definitions.
64 #define portFLOAT float
65 #define portDOUBLE double
67 #define portSHORT short
68 #define portSTACK_TYPE uint32_t
69 #define portBASE_TYPE long
71 typedef portSTACK_TYPE StackType_t;
72 typedef long BaseType_t;
73 typedef unsigned long UBaseType_t;
75 #if ( configUSE_16_BIT_TICKS == 1 )
76 typedef uint16_t TickType_t;
77 #define portMAX_DELAY ( TickType_t ) 0xffff
79 typedef uint32_t TickType_t;
80 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
82 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
83 * not need to be guarded with a critical section. */
84 #define portTICK_TYPE_IS_ATOMIC 1
86 /*-----------------------------------------------------------*/
89 * Architecture specifics.
91 #define portSTACK_GROWTH ( -1 )
92 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
93 #define portBYTE_ALIGNMENT 8
95 #define portINLINE __inline
96 #ifndef portFORCE_INLINE
97 #define portFORCE_INLINE inline __attribute__( ( always_inline ) )
99 #define portHAS_STACK_OVERFLOW_CHECKING 1
100 /*-----------------------------------------------------------*/
103 * @brief Extern declarations.
105 extern BaseType_t xPortIsInsideInterrupt( void );
107 extern void vPortYield( void ) /* PRIVILEGED_FUNCTION */;
109 extern void vPortEnterCritical( void ) /* PRIVILEGED_FUNCTION */;
110 extern void vPortExitCritical( void ) /* PRIVILEGED_FUNCTION */;
112 extern uint32_t ulSetInterruptMask( void ) /* __attribute__(( naked )) PRIVILEGED_FUNCTION */;
113 extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) PRIVILEGED_FUNCTION */;
115 #if ( configENABLE_TRUSTZONE == 1 )
116 extern void vPortAllocateSecureContext( uint32_t ulSecureStackSize ); /* __attribute__ (( naked )) */
117 extern void vPortFreeSecureContext( uint32_t * pulTCB ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */;
118 #endif /* configENABLE_TRUSTZONE */
120 #if ( configENABLE_MPU == 1 )
121 extern BaseType_t xIsPrivileged( void ) /* __attribute__ (( naked )) */;
122 extern void vResetPrivilege( void ) /* __attribute__ (( naked )) */;
123 #endif /* configENABLE_MPU */
124 /*-----------------------------------------------------------*/
127 * @brief MPU specific constants.
129 #if ( configENABLE_MPU == 1 )
130 #define portUSING_MPU_WRAPPERS 1
131 #define portPRIVILEGE_BIT ( 0x80000000UL )
133 #define portPRIVILEGE_BIT ( 0x0UL )
134 #endif /* configENABLE_MPU */
136 /* MPU settings that can be overriden in FreeRTOSConfig.h. */
137 #ifndef configTOTAL_MPU_REGIONS
138 /* Define to 8 for backward compatibility. */
139 #define configTOTAL_MPU_REGIONS ( 8UL )
143 #define portPRIVILEGED_FLASH_REGION ( 0UL )
144 #define portUNPRIVILEGED_FLASH_REGION ( 1UL )
145 #define portUNPRIVILEGED_SYSCALLS_REGION ( 2UL )
146 #define portPRIVILEGED_RAM_REGION ( 3UL )
147 #define portSTACK_REGION ( 4UL )
148 #define portFIRST_CONFIGURABLE_REGION ( 5UL )
149 #define portLAST_CONFIGURABLE_REGION ( configTOTAL_MPU_REGIONS - 1UL )
150 #define portNUM_CONFIGURABLE_REGIONS ( ( portLAST_CONFIGURABLE_REGION - portFIRST_CONFIGURABLE_REGION ) + 1 )
151 #define portTOTAL_NUM_REGIONS ( portNUM_CONFIGURABLE_REGIONS + 1 ) /* Plus one to make space for the stack region. */
153 /* Device memory attributes used in MPU_MAIR registers.
155 * 8-bit values encoded as follows:
156 * Bit[7:4] - 0000 - Device Memory
157 * Bit[3:2] - 00 --> Device-nGnRnE
158 * 01 --> Device-nGnRE
161 * Bit[1:0] - 00, Reserved.
163 #define portMPU_DEVICE_MEMORY_nGnRnE ( 0x00 ) /* 0000 0000 */
164 #define portMPU_DEVICE_MEMORY_nGnRE ( 0x04 ) /* 0000 0100 */
165 #define portMPU_DEVICE_MEMORY_nGRE ( 0x08 ) /* 0000 1000 */
166 #define portMPU_DEVICE_MEMORY_GRE ( 0x0C ) /* 0000 1100 */
168 /* Normal memory attributes used in MPU_MAIR registers. */
169 #define portMPU_NORMAL_MEMORY_NON_CACHEABLE ( 0x44 ) /* Non-cacheable. */
170 #define portMPU_NORMAL_MEMORY_BUFFERABLE_CACHEABLE ( 0xFF ) /* Non-Transient, Write-back, Read-Allocate and Write-Allocate. */
172 /* Attributes used in MPU_RBAR registers. */
173 #define portMPU_REGION_NON_SHAREABLE ( 0UL << 3UL )
174 #define portMPU_REGION_INNER_SHAREABLE ( 1UL << 3UL )
175 #define portMPU_REGION_OUTER_SHAREABLE ( 2UL << 3UL )
177 #define portMPU_REGION_PRIVILEGED_READ_WRITE ( 0UL << 1UL )
178 #define portMPU_REGION_READ_WRITE ( 1UL << 1UL )
179 #define portMPU_REGION_PRIVILEGED_READ_ONLY ( 2UL << 1UL )
180 #define portMPU_REGION_READ_ONLY ( 3UL << 1UL )
182 #define portMPU_REGION_EXECUTE_NEVER ( 1UL )
183 /*-----------------------------------------------------------*/
186 * @brief Settings to define an MPU region.
188 typedef struct MPURegionSettings
190 uint32_t ulRBAR; /**< RBAR for the region. */
191 uint32_t ulRLAR; /**< RLAR for the region. */
192 } MPURegionSettings_t;
195 * @brief MPU settings as stored in the TCB.
197 typedef struct MPU_SETTINGS
199 uint32_t ulMAIR0; /**< MAIR0 for the task containing attributes for all the 4 per task regions. */
200 MPURegionSettings_t xRegionsSettings[ portTOTAL_NUM_REGIONS ]; /**< Settings for 4 per task regions. */
202 /*-----------------------------------------------------------*/
205 * @brief SVC numbers.
207 #define portSVC_ALLOCATE_SECURE_CONTEXT 0
208 #define portSVC_FREE_SECURE_CONTEXT 1
209 #define portSVC_START_SCHEDULER 2
210 #define portSVC_RAISE_PRIVILEGE 3
211 /*-----------------------------------------------------------*/
214 * @brief Scheduler utilities.
216 #define portYIELD() vPortYield()
217 #define portNVIC_INT_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000ed04 ) )
218 #define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
219 #define portEND_SWITCHING_ISR( xSwitchRequired ) do { if( xSwitchRequired ) portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT; } while( 0 )
220 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
221 /*-----------------------------------------------------------*/
224 * @brief Critical section management.
226 #define portSET_INTERRUPT_MASK_FROM_ISR() ulSetInterruptMask()
227 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vClearInterruptMask( x )
228 #define portENTER_CRITICAL() vPortEnterCritical()
229 #define portEXIT_CRITICAL() vPortExitCritical()
230 /*-----------------------------------------------------------*/
233 * @brief Tickless idle/low power functionality.
235 #ifndef portSUPPRESS_TICKS_AND_SLEEP
236 extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
237 #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
239 /*-----------------------------------------------------------*/
242 * @brief Task function macros as described on the FreeRTOS.org WEB site.
244 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
245 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
246 /*-----------------------------------------------------------*/
248 #if ( configENABLE_TRUSTZONE == 1 )
251 * @brief Allocate a secure context for the task.
253 * Tasks are not created with a secure context. Any task that is going to call
254 * secure functions must call portALLOCATE_SECURE_CONTEXT() to allocate itself a
255 * secure context before it calls any secure function.
257 * @param[in] ulSecureStackSize The size of the secure stack to be allocated.
259 #define portALLOCATE_SECURE_CONTEXT( ulSecureStackSize ) vPortAllocateSecureContext( ulSecureStackSize )
262 * @brief Called when a task is deleted to delete the task's secure context,
265 * @param[in] pxTCB The TCB of the task being deleted.
267 #define portCLEAN_UP_TCB( pxTCB ) vPortFreeSecureContext( ( uint32_t * ) pxTCB )
268 #endif /* configENABLE_TRUSTZONE */
269 /*-----------------------------------------------------------*/
271 #if ( configENABLE_MPU == 1 )
274 * @brief Checks whether or not the processor is privileged.
276 * @return 1 if the processor is already privileged, 0 otherwise.
278 #define portIS_PRIVILEGED() xIsPrivileged()
281 * @brief Raise an SVC request to raise privilege.
283 * The SVC handler checks that the SVC was raised from a system call and only
284 * then it raises the privilege. If this is called from any other place,
285 * the privilege is not raised.
287 #define portRAISE_PRIVILEGE() __asm volatile ( "svc %0 \n" ::"i" ( portSVC_RAISE_PRIVILEGE ) : "memory" );
290 * @brief Lowers the privilege level by setting the bit 0 of the CONTROL
293 #define portRESET_PRIVILEGE() vResetPrivilege()
295 #define portIS_PRIVILEGED()
296 #define portRAISE_PRIVILEGE()
297 #define portRESET_PRIVILEGE()
298 #endif /* configENABLE_MPU */
299 /*-----------------------------------------------------------*/
304 #define portMEMORY_BARRIER() __asm volatile ( "" ::: "memory" )
305 /*-----------------------------------------------------------*/
311 #endif /* PORTMACROCOMMON_H */