1 /*
2 * FreeRTOS Kernel V11.1.0
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
30 #ifndef PORTMACRO_H
31 #define PORTMACRO_H
32
33 /* *INDENT-OFF* */
34 #ifdef __cplusplus
35 extern "C" {
36 #endif
37 /* *INDENT-ON* */
38
39 /* Hardware specifics. */
40 #include "machine.h"
41
42 /*-----------------------------------------------------------
43 * Port specific definitions.
44 *
45 * The settings in this file configure FreeRTOS correctly for the
46 * given hardware and compiler.
47 *
48 * These settings should not be altered.
49 *-----------------------------------------------------------
50 */
51
52 /* Type definitions - these are a bit legacy and not really used now, other than
53 portSTACK_TYPE and portBASE_TYPE. */
54 #define portCHAR char
55 #define portFLOAT float
56 #define portDOUBLE double
57 #define portLONG long
58 #define portSHORT short
59 #define portSTACK_TYPE uint32_t
60 #define portBASE_TYPE long
61
62 typedef portSTACK_TYPE StackType_t;
63 typedef long BaseType_t;
64 typedef unsigned long UBaseType_t;
65
66 #if( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
67 typedef uint16_t TickType_t;
68 #define portMAX_DELAY ( TickType_t ) 0xffff
69 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
70 typedef uint32_t TickType_t;
71 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
72
73 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
74 not need to be guarded with a critical section. */
75 #define portTICK_TYPE_IS_ATOMIC 1
76 #else
77 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
78 #endif
79 /*-----------------------------------------------------------*/
80
81 /* Hardware specifics. */
82 #define portBYTE_ALIGNMENT 8 /* Could make four, according to manual. */
83 #define portSTACK_GROWTH -1
84 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
85 #define portNOP() nop()
86
87
88 #pragma inline_asm vPortYield
vPortYield(void)89 static void vPortYield( void )
90 {
91 /* Save clobbered register - may not actually be necessary if inline asm
92 functions are considered to use the same rules as function calls by the
93 compiler. */
94 PUSH.L R5
95 /* Set ITU SWINTR. */
96 MOV.L #553696, R5
97 MOV.B #1, [R5]
98 /* Read back to ensure the value is taken before proceeding. */
99 MOV.L [R5], R5
100 /* Restore clobbered register to its previous value. */
101 POP R5
102 }
103 #define portYIELD() vPortYield()
104 #define portYIELD_FROM_ISR( x ) do { if( x != pdFALSE ) portYIELD(); } while( 0 )
105
106 /* These macros should not be called directly, but through the
107 taskENTER_CRITICAL() and taskEXIT_CRITICAL() macros. An extra check is
108 performed if configASSERT() is defined to ensure an assertion handler does not
109 inadvertently attempt to lower the IPL when the call to assert was triggered
110 because the IPL value was found to be above configMAX_SYSCALL_INTERRUPT_PRIORITY
111 when an ISR safe FreeRTOS API function was executed. ISR safe FreeRTOS API
112 functions are those that end in FromISR. FreeRTOS maintains a separate
113 interrupt API to ensure API function and interrupt entry is as fast and as
114 simple as possible. */
115 #define portENABLE_INTERRUPTS() set_ipl( ( long ) 0 )
116 #ifdef configASSERT
117 #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() configASSERT( ( get_ipl() <= configMAX_SYSCALL_INTERRUPT_PRIORITY ) )
118 #define portDISABLE_INTERRUPTS() if( get_ipl() < configMAX_SYSCALL_INTERRUPT_PRIORITY ) set_ipl( ( long ) configMAX_SYSCALL_INTERRUPT_PRIORITY )
119 #else
120 #define portDISABLE_INTERRUPTS() set_ipl( ( long ) configMAX_SYSCALL_INTERRUPT_PRIORITY )
121 #endif
122
123 /* Critical nesting counts are stored in the TCB. */
124 #define portCRITICAL_NESTING_IN_TCB ( 1 )
125
126 /* The critical nesting functions defined within tasks.c. */
127 extern void vTaskEnterCritical( void );
128 extern void vTaskExitCritical( void );
129 #define portENTER_CRITICAL() vTaskEnterCritical()
130 #define portEXIT_CRITICAL() vTaskExitCritical()
131
132 /* As this port allows interrupt nesting... */
133 #define portSET_INTERRUPT_MASK_FROM_ISR() get_ipl(); set_ipl( ( long ) configMAX_SYSCALL_INTERRUPT_PRIORITY )
134 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus ) set_ipl( ( long ) uxSavedInterruptStatus )
135
136 /*-----------------------------------------------------------*/
137
138 /* Task function macros as described on the FreeRTOS.org WEB site. */
139 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
140 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
141
142 #pragma inline_asm vPortMemoryBarrier
vPortMemoryBarrier(void)143 static void vPortMemoryBarrier( void )
144 {
145 }
146
147 #define portMEMORY_BARRIER() vPortMemoryBarrier()
148
149 /* *INDENT-OFF* */
150 #ifdef __cplusplus
151 }
152 #endif
153 /* *INDENT-ON* */
154
155 #endif /* PORTMACRO_H */
156
