1 /*
2 * Copyright (C) 2017 C-SKY Microsystems Co., Ltd. All rights reserved.
3 *
4 * SPDX-License-Identifier: MIT
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
10 * the Software, and to permit persons to whom the Software is furnished to do so,
11 * subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
18 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
19 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 *
23 */
24
25 #ifndef PORTMACRO_H
26 #define PORTMACRO_H
27
28 #include <stdlib.h>
29 #include <stdint.h>
30 #include <csi_core.h>
31
32 extern void vPortYield( void );
33
34 /* *INDENT-OFF* */
35 #ifdef __cplusplus
36 class vPortYield;
37 extern "C" {
38 #endif
39 /* *INDENT-ON* */
40
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. */
53 #define portCHAR char
54 #define portFLOAT float
55 #define portDOUBLE double
56 #define portLONG long
57 #define portSHORT short
58 #define portSTACK_TYPE uint32_t
59 #define portBASE_TYPE long
60
61 typedef portSTACK_TYPE StackType_t;
62 typedef long BaseType_t;
63 typedef unsigned long UBaseType_t;
64 typedef void (* portvectorfunc)( void );
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 #else
73 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
74 #endif
75
76
77 /* Hardware specifics. */
78 #define portBYTE_ALIGNMENT 8
79 #define portSTACK_GROWTH -1
80 #define portMS_PERIOD_TICK 10
81 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
82
83
vPortEnableInterrupt(void)84 static inline void vPortEnableInterrupt( void )
85 {
86 __enable_irq();
87 }
88
vPortDisableInterrupt(void)89 static inline void vPortDisableInterrupt( void )
90 {
91 __disable_irq();
92 }
93
GetCurrentPSR(void)94 static inline portLONG GetCurrentPSR( void )
95 {
96 return __get_PSR();
97 }
98
SaveLocalPSR(void)99 static inline portLONG SaveLocalPSR( void )
100 {
101 portLONG flags = __get_PSR();
102
103 __disable_irq();
104 return flags;
105 }
106
RestoreLocalPSR(portLONG newMask)107 static inline void RestoreLocalPSR( portLONG newMask )
108 {
109 __asm__ __volatile__ (
110 "mtcr %0, psr \n"
111 :
112 : "r" ( newMask )
113 : "memory"
114 );
115 }
116
117 extern void vPortEnterCritical( void );
118 extern void vPortExitCritical( void );
119 extern __attribute__( ( naked ) ) void cpu_yeild( void );
120
121 #define portDISABLE_INTERRUPTS() vPortDisableInterrupt()
122 #define portENABLE_INTERRUPTS() vPortEnableInterrupt()
123 #define portENTER_CRITICAL() vPortEnterCritical()
124 #define portEXIT_CRITICAL() vPortExitCritical()
125 #define portSET_INTERRUPT_MASK_FROM_ISR() SaveLocalPSR()
126 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( a ) RestoreLocalPSR( a )
127
128 #define portNOP() asm ( "nop" )
129
130 extern portLONG ulCriticalNesting;
131 extern portLONG pendsvflag;
132
133 #define portYIELD() \
134 if( ulCriticalNesting == 0 ) \
135 { \
136 vPortYield(); \
137 } \
138 else \
139 { \
140 pendsvflag = 1; \
141 } \
142 portNOP(); portNOP()
143
144 /*-----------------------------------------------------------*/
145
146 /* Task function macros as described on the FreeRTOS.org WEB site. */
147 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters ) __attribute__( ( noreturn ) )
148 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
149 /*-----------------------------------------------------------*/
150
151 #define portEND_SWITCHING_ISR( xSwitchRequired ) \
152 do { \
153 if( xSwitchRequired != pdFALSE ) \
154 { \
155 traceISR_EXIT_TO_SCHEDULER(); \
156 portYIELD(); \
157 } \
158 else \
159 { \
160 traceISR_EXIT(); \
161 } \
162 } while( 0 )
163
164 #define portYIELD_FROM_ISR( a ) vTaskSwitchContext()
165
166
167
168 /* *INDENT-OFF* */
169 #ifdef __cplusplus
170 }
171 #endif
172 /* *INDENT-ON* */
173
174 #endif /* PORTMACRO_H */
175
