2 * FreeRTOS Kernel <DEVELOPMENT BRANCH>
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 /*-----------------------------------------------------------*/
190 * @brief Settings to define an MPU region.
192 typedef struct MPURegionSettings
194 uint32_t ulRBAR; /**< RBAR for the region. */
195 uint32_t ulRLAR; /**< RLAR for the region. */
196 } MPURegionSettings_t;
199 * @brief MPU settings as stored in the TCB.
201 typedef struct MPU_SETTINGS
203 uint32_t ulMAIR0; /**< MAIR0 for the task containing attributes for all the 4 per task regions. */
204 MPURegionSettings_t xRegionsSettings[ portTOTAL_NUM_REGIONS ]; /**< Settings for 4 per task regions. */
206 /*-----------------------------------------------------------*/
209 * @brief SVC numbers.
211 #define portSVC_ALLOCATE_SECURE_CONTEXT 0
212 #define portSVC_FREE_SECURE_CONTEXT 1
213 #define portSVC_START_SCHEDULER 2
214 #define portSVC_RAISE_PRIVILEGE 3
215 /*-----------------------------------------------------------*/
218 * @brief Scheduler utilities.
220 #define portYIELD() vPortYield()
221 #define portNVIC_INT_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000ed04 ) )
222 #define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
223 #define portEND_SWITCHING_ISR( xSwitchRequired ) do { if( xSwitchRequired ) portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT; } while( 0 )
224 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
225 /*-----------------------------------------------------------*/
228 * @brief Critical section management.
230 #define portSET_INTERRUPT_MASK_FROM_ISR() ulSetInterruptMask()
231 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vClearInterruptMask( x )
232 #define portENTER_CRITICAL() vPortEnterCritical()
233 #define portEXIT_CRITICAL() vPortExitCritical()
234 /*-----------------------------------------------------------*/
237 * @brief Tickless idle/low power functionality.
239 #ifndef portSUPPRESS_TICKS_AND_SLEEP
240 extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
241 #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
243 /*-----------------------------------------------------------*/
246 * @brief Task function macros as described on the FreeRTOS.org WEB site.
248 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
249 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
250 /*-----------------------------------------------------------*/
252 #if ( configENABLE_TRUSTZONE == 1 )
255 * @brief Allocate a secure context for the task.
257 * Tasks are not created with a secure context. Any task that is going to call
258 * secure functions must call portALLOCATE_SECURE_CONTEXT() to allocate itself a
259 * secure context before it calls any secure function.
261 * @param[in] ulSecureStackSize The size of the secure stack to be allocated.
263 #define portALLOCATE_SECURE_CONTEXT( ulSecureStackSize ) vPortAllocateSecureContext( ulSecureStackSize )
266 * @brief Called when a task is deleted to delete the task's secure context,
269 * @param[in] pxTCB The TCB of the task being deleted.
271 #define portCLEAN_UP_TCB( pxTCB ) vPortFreeSecureContext( ( uint32_t * ) pxTCB )
272 #endif /* configENABLE_TRUSTZONE */
273 /*-----------------------------------------------------------*/
275 #if ( configENABLE_MPU == 1 )
278 * @brief Checks whether or not the processor is privileged.
280 * @return 1 if the processor is already privileged, 0 otherwise.
282 #define portIS_PRIVILEGED() xIsPrivileged()
285 * @brief Raise an SVC request to raise privilege.
287 * The SVC handler checks that the SVC was raised from a system call and only
288 * then it raises the privilege. If this is called from any other place,
289 * the privilege is not raised.
291 #define portRAISE_PRIVILEGE() __asm volatile ( "svc %0 \n" ::"i" ( portSVC_RAISE_PRIVILEGE ) : "memory" );
294 * @brief Lowers the privilege level by setting the bit 0 of the CONTROL
297 #define portRESET_PRIVILEGE() vResetPrivilege()
299 #define portIS_PRIVILEGED()
300 #define portRAISE_PRIVILEGE()
301 #define portRESET_PRIVILEGE()
302 #endif /* configENABLE_MPU */
303 /*-----------------------------------------------------------*/
308 #define portMEMORY_BARRIER() __asm volatile ( "" ::: "memory" )
309 /*-----------------------------------------------------------*/
317 #endif /* PORTMACROCOMMON_H */