xref: /Kernel-v10.6.2/portable/IAR/ARM_CM55/non_secure/portmacrocommon.h (revision ef7b253b56c9788077f5ecd6c9deb4021923d646) 
1 /*
2  * FreeRTOS Kernel V10.6.2
3  * Copyright (C) 2021 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
4  *
5  * SPDX-License-Identifier: MIT
6  *
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:
13  *
14  * The above copyright notice and this permission notice shall be included in all
15  * copies or substantial portions of the Software.
16  *
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.
23  *
24  * https://www.FreeRTOS.org
25  * https://github.com/FreeRTOS
26  *
27  */
28 
29 #ifndef PORTMACROCOMMON_H
30 #define PORTMACROCOMMON_H
31 
32 /* *INDENT-OFF* */
33 #ifdef __cplusplus
34     extern "C" {
35 #endif
36 /* *INDENT-ON* */
37 
38 /*------------------------------------------------------------------------------
39  * Port specific definitions.
40  *
41  * The settings in this file configure FreeRTOS correctly for the given hardware
42  * and compiler.
43  *
44  * These settings should not be altered.
45  *------------------------------------------------------------------------------
46  */
47 
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 */
51 
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 */
55 
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 */
59 
60 /*-----------------------------------------------------------*/
61 
62 /**
63  * @brief Type definitions.
64  */
65 #define portCHAR          char
66 #define portFLOAT         float
67 #define portDOUBLE        double
68 #define portLONG          long
69 #define portSHORT         short
70 #define portSTACK_TYPE    uint32_t
71 #define portBASE_TYPE     long
72 
73 typedef portSTACK_TYPE   StackType_t;
74 typedef long             BaseType_t;
75 typedef unsigned long    UBaseType_t;
76 
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
83 
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
87 #else
88     #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
89 #endif
90 /*-----------------------------------------------------------*/
91 
92 /**
93  * Architecture specifics.
94  */
95 #define portSTACK_GROWTH                   ( -1 )
96 #define portTICK_PERIOD_MS                 ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
97 #define portBYTE_ALIGNMENT                 8
98 #define portNOP()
99 #define portINLINE                         __inline
100 #ifndef portFORCE_INLINE
101     #define portFORCE_INLINE               inline __attribute__( ( always_inline ) )
102 #endif
103 #define portHAS_STACK_OVERFLOW_CHECKING    1
104 /*-----------------------------------------------------------*/
105 
106 /**
107  * @brief Extern declarations.
108  */
109 extern BaseType_t xPortIsInsideInterrupt( void );
110 
111 extern void vPortYield( void ) /* PRIVILEGED_FUNCTION */;
112 
113 extern void vPortEnterCritical( void ) /* PRIVILEGED_FUNCTION */;
114 extern void vPortExitCritical( void ) /* PRIVILEGED_FUNCTION */;
115 
116 extern uint32_t ulSetInterruptMask( void ) /* __attribute__(( naked )) PRIVILEGED_FUNCTION */;
117 extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) PRIVILEGED_FUNCTION */;
118 
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 */
123 
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 /*-----------------------------------------------------------*/
129 
130 /**
131  * @brief MPU specific constants.
132  */
133 #if ( configENABLE_MPU == 1 )
134     #define portUSING_MPU_WRAPPERS    1
135     #define portPRIVILEGE_BIT         ( 0x80000000UL )
136 #else
137     #define portPRIVILEGE_BIT         ( 0x0UL )
138 #endif /* configENABLE_MPU */
139 
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 )
144 #endif
145 
146 /* MPU regions. */
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. */
156 
157 /* Device memory attributes used in MPU_MAIR registers.
158  *
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
163  *              10 --> Device-nGRE
164  *              11 --> Device-GRE
165  *  Bit[1:0] - 00, Reserved.
166  */
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 */
171 
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. */
175 
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 )
180 
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 )
185 
186 #define portMPU_REGION_EXECUTE_NEVER                  ( 1UL )
187 /*-----------------------------------------------------------*/
188 
189 #if ( configENABLE_MPU == 1 )
190 
191     /**
192      * @brief Settings to define an MPU region.
193      */
194     typedef struct MPURegionSettings
195     {
196         uint32_t ulRBAR;     /**< RBAR for the region. */
197         uint32_t ulRLAR;     /**< RLAR for the region. */
198     } MPURegionSettings_t;
199 
200     #if ( configUSE_MPU_WRAPPERS_V1 == 0 )
201 
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.
204         #endif
205 
206         /**
207          * @brief System call stack.
208          */
209         typedef struct SYSTEM_CALL_STACK_INFO
210         {
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;
218 
219     #endif /* configUSE_MPU_WRAPPERS_V1 == 0 */
220 
221     /**
222      * @brief MPU settings as stored in the TCB.
223      */
224     #if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) )
225 
226         #if( configENABLE_TRUSTZONE == 1 )
227 
228             /*
229              * +-----------+---------------+----------+-----------------+------------------------------+-----+
230              * |  s16-s31  | s0-s15, FPSCR |  r4-r11  | r0-r3, r12, LR, | xSecureContext, PSP, PSPLIM, |     |
231              * |           |               |          | PC, xPSR        | CONTROL, EXC_RETURN          |     |
232              * +-----------+---------------+----------+-----------------+------------------------------+-----+
233              *
234              * <-----------><--------------><---------><----------------><-----------------------------><---->
235              *      16             16            8               8                     5                   1
236              */
237             #define MAX_CONTEXT_SIZE 54
238 
239         #else /* #if( configENABLE_TRUSTZONE == 1 ) */
240 
241             /*
242              * +-----------+---------------+----------+-----------------+----------------------+-----+
243              * |  s16-s31  | s0-s15, FPSCR |  r4-r11  | r0-r3, r12, LR, | PSP, PSPLIM, CONTROL |     |
244              * |           |               |          | PC, xPSR        | EXC_RETURN           |     |
245              * +-----------+---------------+----------+-----------------+----------------------+-----+
246              *
247              * <-----------><--------------><---------><----------------><---------------------><---->
248              *      16             16            8               8                  4              1
249              */
250             #define MAX_CONTEXT_SIZE 53
251 
252         #endif /* #if( configENABLE_TRUSTZONE == 1 ) */
253 
254     #else /* #if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) ) */
255 
256         #if( configENABLE_TRUSTZONE == 1 )
257 
258             /*
259              * +----------+-----------------+------------------------------+-----+
260              * |  r4-r11  | r0-r3, r12, LR, | xSecureContext, PSP, PSPLIM, |     |
261              * |          | PC, xPSR        | CONTROL, EXC_RETURN          |     |
262              * +----------+-----------------+------------------------------+-----+
263              *
264              * <---------><----------------><------------------------------><---->
265              *     8               8                      5                   1
266              */
267             #define MAX_CONTEXT_SIZE 22
268 
269         #else /* #if( configENABLE_TRUSTZONE == 1 ) */
270 
271             /*
272              * +----------+-----------------+----------------------+-----+
273              * |  r4-r11  | r0-r3, r12, LR, | PSP, PSPLIM, CONTROL |     |
274              * |          | PC, xPSR        | EXC_RETURN           |     |
275              * +----------+-----------------+----------------------+-----+
276              *
277              * <---------><----------------><----------------------><---->
278              *     8               8                  4              1
279              */
280             #define MAX_CONTEXT_SIZE 21
281 
282         #endif /* #if( configENABLE_TRUSTZONE == 1 ) */
283 
284     #endif /* #if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) ) */
285 
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 )
289 
290 /* Size of an Access Control List (ACL) entry in bits. */
291     #define portACL_ENTRY_SIZE_BITS             ( 32U )
292 
293     typedef struct MPU_SETTINGS
294     {
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;
299 
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 ];
304             #endif
305         #endif
306     } xMPU_SETTINGS;
307 
308 #endif /* configENABLE_MPU == 1 */
309 /*-----------------------------------------------------------*/
310 
311 /**
312  * @brief Validate priority of ISRs that are allowed to call FreeRTOS
313  * system calls.
314  */
315 #ifdef configASSERT
316     #if ( portHAS_BASEPRI == 1 )
317         void vPortValidateInterruptPriority( void );
318         #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID()    vPortValidateInterruptPriority()
319     #endif
320 #endif
321 
322 /**
323  * @brief SVC numbers.
324  */
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 /*-----------------------------------------------------------*/
332 
333 /**
334  * @brief Scheduler utilities.
335  */
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; } \
341     while( 0 )
342 #define portYIELD_FROM_ISR( x )    portEND_SWITCHING_ISR( x )
343 /*-----------------------------------------------------------*/
344 
345 /**
346  * @brief Critical section management.
347  */
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 /*-----------------------------------------------------------*/
353 
354 /**
355  * @brief Tickless idle/low power functionality.
356  */
357 #ifndef portSUPPRESS_TICKS_AND_SLEEP
358     extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
359     #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime )    vPortSuppressTicksAndSleep( xExpectedIdleTime )
360 #endif
361 /*-----------------------------------------------------------*/
362 
363 /**
364  * @brief Task function macros as described on the FreeRTOS.org WEB site.
365  */
366 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters )    void vFunction( void * pvParameters )
367 #define portTASK_FUNCTION( vFunction, pvParameters )          void vFunction( void * pvParameters )
368 /*-----------------------------------------------------------*/
369 
370 #if ( configENABLE_TRUSTZONE == 1 )
371 
372 /**
373  * @brief Allocate a secure context for the task.
374  *
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.
378  *
379  * @param[in] ulSecureStackSize The size of the secure stack to be allocated.
380  */
381     #define portALLOCATE_SECURE_CONTEXT( ulSecureStackSize )    vPortAllocateSecureContext( ulSecureStackSize )
382 
383 /**
384  * @brief Called when a task is deleted to delete the task's secure context,
385  * if it has one.
386  *
387  * @param[in] pxTCB The TCB of the task being deleted.
388  */
389     #define portCLEAN_UP_TCB( pxTCB )                           vPortFreeSecureContext( ( uint32_t * ) pxTCB )
390 #endif /* configENABLE_TRUSTZONE */
391 /*-----------------------------------------------------------*/
392 
393 #if ( configENABLE_MPU == 1 )
394 
395 /**
396  * @brief Checks whether or not the processor is privileged.
397  *
398  * @return 1 if the processor is already privileged, 0 otherwise.
399  */
400     #define portIS_PRIVILEGED()      xIsPrivileged()
401 
402 /**
403  * @brief Raise an SVC request to raise privilege.
404  *
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.
408  */
409     #define portRAISE_PRIVILEGE()    __asm volatile ( "svc %0 \n" ::"i" ( portSVC_RAISE_PRIVILEGE ) : "memory" );
410 
411 /**
412  * @brief Lowers the privilege level by setting the bit 0 of the CONTROL
413  * register.
414  */
415     #define portRESET_PRIVILEGE()    vResetPrivilege()
416 #else
417     #define portIS_PRIVILEGED()
418     #define portRAISE_PRIVILEGE()
419     #define portRESET_PRIVILEGE()
420 #endif /* configENABLE_MPU */
421 /*-----------------------------------------------------------*/
422 
423 #if ( configENABLE_MPU == 1 )
424 
425     extern BaseType_t xPortIsTaskPrivileged( void );
426 
427     /**
428      * @brief Checks whether or not the calling task is privileged.
429      *
430      * @return pdTRUE if the calling task is privileged, pdFALSE otherwise.
431      */
432     #define portIS_TASK_PRIVILEGED()      xPortIsTaskPrivileged()
433 
434 #endif /* configENABLE_MPU == 1 */
435 /*-----------------------------------------------------------*/
436 
437 /**
438  * @brief Barriers.
439  */
440 #define portMEMORY_BARRIER()    __asm volatile ( "" ::: "memory" )
441 /*-----------------------------------------------------------*/
442 
443 /* *INDENT-OFF* */
444 #ifdef __cplusplus
445     }
446 #endif
447 /* *INDENT-ON* */
448 
449 #endif /* PORTMACROCOMMON_H */
450