rtems.c

osapi 2.0 操作系统抽象层 "系统抽象层"使得你可以实现一种对于RTOS、CPU和所运行产品物理特性完全透明的软件。使用这种公共通用接口

/*
** Basic RTEMS startup code
*/

/*
** Includes
*/
#include <rtems.h>
#include <bsp.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <rtems/rtems_bsdnet.h>


#include "common_types.h"
#include "osapi.h"



/*
** Prototypes
*/
rtems_task Init( rtems_task_argument ignored );
extern void OS_Application_Startup(void);


/*
** RTEMS OS Configuration defintions
*/
#define TASK_INTLEVEL 0
#define CONFIGURE_INIT
#define CONFIGURE_INIT_TASK_ATTRIBUTES	(RTEMS_FLOATING_POINT | RTEMS_PREEMPT | RTEMS_NO_TIMESLICE | RTEMS_ASR | RTEMS_INTERRUPT_LEVEL(TASK_INTLEVEL))

#define CONFIGURE_MAXIMUM_TASKS         25 
#define CONFIGURE_MAXIMUM_TIMERS        3
#define CONFIGURE_MAXIMUM_SEMAPHORES    15 
#define CONFIGURE_MAXIMUM_MESSAGE_QUEUES 30

#define CONFIGURE_MAXIMUM_POSIX_THREADS         CONFIGURE_MAXIMUM_TASKS
#define CONFIGURE_MAXIMUM_POSIX_TIMERS          CONFIGURE_MAXIMUM_TIMERS
#define CONFIGURE_MAXIMUM_POSIX_SEMAPHORES      CONFIGURE_MAXIMUM_SEMAPHORES
#define CONFIGURE_MAXIMUM_POSIX_MESSAGE_QUEUES  CONFIGURE_MAXIMUM_MESSAGE_QUEUES
#define CONFIGURE_MAXIMUM_POSIX_MUTEXES         15 
#define CONFIGURE_MAXIMUM_POSIX_CONDITION_VARIABLES 15 
#define CONFIGURE_MAXIMUM_POSIX_KEYS           15 
#define CONFIGURE_MAXIMUM_POSIX_QUEUED_SIGNALS        10

#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER

#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM
#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS    100

#define CONFIGURE_MICROSECONDS_PER_TICK         10000

/*
** This include file must be AFTER the 
** configuration data.
*/
#include <confdefs.h>

/*
** Global data
*/
struct rtems_bsdnet_config	rtems_bsdnet_config;



/*
** Definitions & Prototypes
*/
extern rtems_configuration_table BSP_Configuration;
extern unsigned32 _end;

/*
** Function: Init
** Purpose: RTEMS Entry Point
*/ 
rtems_task Init( rtems_task_argument ignored )
{

   printf("\n\n");

   printf( "\n\n*** RTEMS Info ***\n" );
   printf("%s", _Copyright_Notice );
   printf("%s\n\n", _RTEMS_version );

   printf(" Workspace base %08X\n", (unsigned32)BSP_Configuration.work_space_start );
   printf(" Workspace size %d\n",   BSP_Configuration.work_space_size );
   printf("  Workspace top %08X\n", (unsigned32)BSP_Configuration.work_space_start 
                                    + BSP_Configuration.work_space_size );
   printf("\n");

   printf( "*** End RTEMS info ***\n\n" );

   /* rtems_create_root_fs();*/

   /*
   ** Run the example 
   */
   OS_Application_Startup();

   /*
   ** End the RTEMS init thread 
   */
}


uint32 OS_BSPInstallVectorHandler(uint32 vector, void (*function_pointer)(uint32, uint32 *, uint32))
{
    /*
    ** This function is blank for now.
    ** It is functional in our latest flight BSP.
    */
    return 0;
}