[e655f7e] | 1 | /** |
---|
| 2 | * @file |
---|
[05df0a8] | 3 | * |
---|
[e655f7e] | 4 | * @brief Create Idle Thread |
---|
| 5 | * @ingroup ScoreThread |
---|
| 6 | */ |
---|
| 7 | |
---|
| 8 | /* |
---|
[06dcaf0] | 9 | * COPYRIGHT (c) 1989-2011. |
---|
[05df0a8] | 10 | * On-Line Applications Research Corporation (OAR). |
---|
| 11 | * |
---|
| 12 | * The license and distribution terms for this file may be |
---|
[dcf3687] | 13 | * found in the file LICENSE in this distribution or at |
---|
[c499856] | 14 | * http://www.rtems.org/license/LICENSE. |
---|
[05df0a8] | 15 | */ |
---|
| 16 | |
---|
[a8eed23] | 17 | #if HAVE_CONFIG_H |
---|
| 18 | #include "config.h" |
---|
| 19 | #endif |
---|
| 20 | |
---|
[5618c37a] | 21 | #include <rtems/score/threadimpl.h> |
---|
[c5831a3f] | 22 | #include <rtems/score/schedulerimpl.h> |
---|
[218286bc] | 23 | #include <rtems/score/stackimpl.h> |
---|
[976162a6] | 24 | #include <rtems/config.h> |
---|
[05df0a8] | 25 | |
---|
[3380ee8] | 26 | static void _Thread_Create_idle_for_cpu( Per_CPU_Control *cpu ) |
---|
[05df0a8] | 27 | { |
---|
[477259c] | 28 | Objects_Name name; |
---|
| 29 | Thread_Control *idle; |
---|
[6c71b25] | 30 | |
---|
[477259c] | 31 | name.name_u32 = _Objects_Build_name( 'I', 'D', 'L', 'E' ); |
---|
[05df0a8] | 32 | |
---|
| 33 | /* |
---|
| 34 | * The entire workspace is zeroed during its initialization. Thus, all |
---|
| 35 | * fields not explicitly assigned were explicitly zeroed by |
---|
| 36 | * _Workspace_Initialization. |
---|
| 37 | */ |
---|
[06dcaf0] | 38 | idle = _Thread_Internal_allocate(); |
---|
[05279b84] | 39 | |
---|
[05df0a8] | 40 | _Thread_Initialize( |
---|
| 41 | &_Thread_Internal_information, |
---|
[06dcaf0] | 42 | idle, |
---|
[3380ee8] | 43 | _Scheduler_Get_by_CPU( cpu ), |
---|
[05df0a8] | 44 | NULL, /* allocate the stack */ |
---|
[8a331a5e] | 45 | _Stack_Ensure_minimum( rtems_configuration_get_idle_task_stack_size() ), |
---|
[05df0a8] | 46 | CPU_IDLE_TASK_IS_FP, |
---|
| 47 | PRIORITY_MAXIMUM, |
---|
[aae7f1a1] | 48 | true, /* preemptable */ |
---|
[05df0a8] | 49 | THREAD_CPU_BUDGET_ALGORITHM_NONE, |
---|
| 50 | NULL, /* no budget algorithm callout */ |
---|
| 51 | 0, /* all interrupts enabled */ |
---|
[6c71b25] | 52 | name |
---|
[05df0a8] | 53 | ); |
---|
[05279b84] | 54 | |
---|
[05df0a8] | 55 | /* |
---|
| 56 | * WARNING!!! This is necessary to "kick" start the system and |
---|
| 57 | * MUST be done before _Thread_Start is invoked. |
---|
| 58 | */ |
---|
[3380ee8] | 59 | cpu->heir = |
---|
| 60 | cpu->executing = idle; |
---|
[05279b84] | 61 | |
---|
[05df0a8] | 62 | _Thread_Start( |
---|
[06dcaf0] | 63 | idle, |
---|
[05df0a8] | 64 | THREAD_START_NUMERIC, |
---|
[3954767] | 65 | rtems_configuration_get_idle_task(), |
---|
[05df0a8] | 66 | NULL, |
---|
[1ccb64e1] | 67 | 0, |
---|
[3380ee8] | 68 | cpu |
---|
[05df0a8] | 69 | ); |
---|
[06dcaf0] | 70 | } |
---|
| 71 | |
---|
| 72 | void _Thread_Create_idle( void ) |
---|
| 73 | { |
---|
[3380ee8] | 74 | uint32_t cpu_count = _SMP_Get_processor_count(); |
---|
| 75 | uint32_t cpu_index; |
---|
[477259c] | 76 | |
---|
[3380ee8] | 77 | for ( cpu_index = 0 ; cpu_index < cpu_count ; ++cpu_index ) { |
---|
| 78 | Per_CPU_Control *cpu = _Per_CPU_Get_by_index( cpu_index ); |
---|
[05279b84] | 79 | |
---|
[3380ee8] | 80 | if ( _Per_CPU_Is_processor_started( cpu ) ) { |
---|
| 81 | _Thread_Create_idle_for_cpu( cpu ); |
---|
[c5831a3f] | 82 | } |
---|
[477259c] | 83 | } |
---|
[05df0a8] | 84 | } |
---|