RTEMS
percpu.h
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1 /* SPDX-License-Identifier: BSD-2-Clause */
2 
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43 
44 #ifndef _RTEMS_CONFDEFS_PERCPU_H
45 #define _RTEMS_CONFDEFS_PERCPU_H
46 
47 #ifndef __CONFIGURATION_TEMPLATE_h
48 #error "Do not include this file directly, use <rtems/confdefs.h> instead"
49 #endif
50 
51 #ifdef CONFIGURE_INIT
52 
53 #include <rtems/confdefs/bsp.h>
54 #include <rtems/score/context.h>
55 #include <rtems/score/percpu.h>
56 #include <rtems/score/smp.h>
57 
58 #ifdef __cplusplus
59 extern "C" {
60 #endif
61 
62 /* Ensure that _CONFIGURE_MAXIMUM_PROCESSORS > 1 only in SMP configurations */
63 #if defined(CONFIGURE_MAXIMUM_PROCESSORS) && defined(RTEMS_SMP)
64  #define _CONFIGURE_MAXIMUM_PROCESSORS CONFIGURE_MAXIMUM_PROCESSORS
65 #else
66  #define _CONFIGURE_MAXIMUM_PROCESSORS 1
67 #endif
68 
69 #ifdef RTEMS_SMP
70  const uint32_t _SMP_Processor_configured_maximum =
71  _CONFIGURE_MAXIMUM_PROCESSORS;
72 
74  _Per_CPU_Information[ _CONFIGURE_MAXIMUM_PROCESSORS ];
75 #endif
76 
77 /* Interrupt stack configuration */
78 
79 #ifndef CONFIGURE_INTERRUPT_STACK_SIZE
80  #ifdef BSP_INTERRUPT_STACK_SIZE
81  #define CONFIGURE_INTERRUPT_STACK_SIZE BSP_INTERRUPT_STACK_SIZE
82  #else
83  #define CONFIGURE_INTERRUPT_STACK_SIZE CPU_STACK_MINIMUM_SIZE
84  #endif
85 #endif
86 
87 #if CONFIGURE_INTERRUPT_STACK_SIZE % CPU_INTERRUPT_STACK_ALIGNMENT != 0
88  #error "CONFIGURE_INTERRUPT_STACK_SIZE fails to meet the CPU port interrupt stack alignment"
89 #endif
90 
92  _ISR_Stack_size,
94 );
95 
96 #define _CONFIGURE_INTERRUPT_STACK_AREA_SIZE \
97  ( CONFIGURE_INTERRUPT_STACK_SIZE * _CONFIGURE_MAXIMUM_PROCESSORS )
98 
99 char _ISR_Stack_area_begin[ _CONFIGURE_INTERRUPT_STACK_AREA_SIZE ]
100 RTEMS_ALIGNED( CPU_INTERRUPT_STACK_ALIGNMENT )
101 RTEMS_SECTION( ".rtemsstack.interrupt" );
102 
106  + _CONFIGURE_INTERRUPT_STACK_AREA_SIZE
107 );
108 
109 /* Thread stack size configuration */
110 
111 #ifndef CONFIGURE_MINIMUM_TASK_STACK_SIZE
112  #define CONFIGURE_MINIMUM_TASK_STACK_SIZE CPU_STACK_MINIMUM_SIZE
113 #endif
114 
115 #ifndef CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE
116  #define CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE \
117  ( 2 * CONFIGURE_MINIMUM_TASK_STACK_SIZE )
118 #endif
119 
120 /* Idle thread configuration */
121 
122 #ifndef CONFIGURE_IDLE_TASK_STACK_SIZE
123  #ifdef BSP_IDLE_TASK_STACK_SIZE
124  #define CONFIGURE_IDLE_TASK_STACK_SIZE BSP_IDLE_TASK_STACK_SIZE
125  #else
126  #define CONFIGURE_IDLE_TASK_STACK_SIZE CONFIGURE_MINIMUM_TASK_STACK_SIZE
127  #endif
128 #endif
129 
130 #if CONFIGURE_IDLE_TASK_STACK_SIZE < CONFIGURE_MINIMUM_TASK_STACK_SIZE
131  #error "CONFIGURE_IDLE_TASK_STACK_SIZE less than CONFIGURE_MINIMUM_TASK_STACK_SIZE"
132 #endif
133 
135 
137  _CONFIGURE_MAXIMUM_PROCESSORS
139 ] RTEMS_ALIGNED( CPU_INTERRUPT_STACK_ALIGNMENT )
140 RTEMS_SECTION( ".rtemsstack.idle" );
141 
142 #if defined(CONFIGURE_IDLE_TASK_INITIALIZES_APPLICATION) && \
143  !defined(CONFIGURE_IDLE_TASK_BODY)
144  #error "If you define CONFIGURE_IDLE_TASK_INITIALIZES_APPLICATION, then you must define CONFIGURE_IDLE_TASK_BODY as well"
145 #endif
146 
147 #if !defined(CONFIGURE_IDLE_TASK_BODY) && defined(BSP_IDLE_TASK_BODY)
148  #define CONFIGURE_IDLE_TASK_BODY BSP_IDLE_TASK_BODY
149 #endif
150 
151 #ifdef CONFIGURE_IDLE_TASK_BODY
153 #endif
154 
155 #ifdef __cplusplus
156 }
157 #endif
158 
159 #endif /* CONFIGURE_INIT */
160 
161 #endif /* _RTEMS_CONFDEFS_PERCPU_H */
char _ISR_Stack_area_begin[]
The interrupt stack area begin.
const Thread_Idle_body _Thread_Idle_body
The idle thread body.
Information About Each Thread&#39;s Context.
#define CPU_IDLE_TASK_IS_FP
Definition: cpu.h:132
#define CONTEXT_FP_SIZE
Size of floating point context area.
Definition: context.h:52
void *(* Thread_Idle_body)(uintptr_t)
The idle thread body type.
#define RTEMS_DEFINE_GLOBAL_SYMBOL(_name, _value)
Defines a global symbol with the specified name and value.
Definition: basedefs.h:606
SuperCore SMP Support API.
const size_t _Thread_Idle_stack_size
The idle thread stack size in bytes.
#define RTEMS_ALIGNED(_alignment)
Instructs the compiler in a declaration or definition to enforce the specified alignment.
Definition: basedefs.h:389
#define CONFIGURE_INTERRUPT_STACK_SIZE
This configuration option is an integer define.
Definition: appl-config.h:2605
const char _ISR_Stack_area_end[]
The interrupt stack area end.
Evaluate BSP Related Configuration Options.
const uint32_t _SMP_Processor_configured_maximum
The configured processor maximum.
#define RTEMS_SECTION(_section)
Instructs the compiler to place a specific variable or function in the specified section.
Definition: basedefs.h:817
#define CONFIGURE_IDLE_TASK_BODY
This configuration option is an initializer define.
Definition: appl-config.h:3147
#define RTEMS_SYMBOL_NAME(_name)
Constructs a symbol name.
Definition: basedefs.h:310
char _Thread_Idle_stacks[]
The idle thread stacks.
#define CONFIGURE_IDLE_TASK_STACK_SIZE
This configuration option is an integer define.
Definition: appl-config.h:3218