gonzui

    1: /*
    2:  *----------------------------------------------------------------------
    3:  *    T-Kernel 2.0 Software Package
    4:  *
    5:  *    Copyright 2011 by Ken Sakamura.
    6:  *    This software is distributed under the latest version of T-License 2.x.
    7:  *----------------------------------------------------------------------
    8:  *
    9:  *    Released by T-Engine Forum(http://www.t-engine.org/) at 2011/05/17.
   10:  *    Modified by TRON Forum(http://www.tron.org/) at 2015/06/01.
   11:  *
   12:  *----------------------------------------------------------------------
   13:  */
   14: 
   15: /*
   16:  *      sysinit_main.c (sysinit)
   17:  *      Initialize System
   18:  */
   19: 
   20: #include "sysinit.h"
   21: #include "patch.h"
   22: #include <tk/util.h>
   23: #include <sys/rominfo.h>
   24: #include <sys/debug.h>
   25: 
   26: /*
   27:  * Initialize sequence before T-Kernel starts
   28:  *      Perform preparation necessary to start T-Kernel.
   29:  */
   30: IMPORT void init_system( void );
   31: 
   32: /*
   33:  * Start T-Kernel
   34:  *      Start T-Kernel/OS and the initial task specified by 'ctsk'.
   35:  *      
   36:  *      T-Kernel/SM doesn't start when the initial task starts,
   37:  *      so services of T-Kernel/SM are not available at this point.
   38:  *      Never return from this function.
   39:  */
   40: IMPORT void t_kernel_main( T_CTSK *ctsk );
   41: 
   42: /*
   43:  * Start System
   44:  *      Start following steps.
   45:  *      1. Start T-Kernel/SM.
   46:  *      2. Make the task priority to '138'.
   47:  *      3. Call start_subsystems().
   48:  *         At this point, start each subsystem and each device driver.
   49:  *      Return from function after starting.
   50:  */
   51: IMPORT void start_system( void );
   52: 
   53: /*
   54:  * Stop System
   55:  *      1. Call finish_subsystems().
   56:  *         At this point, stop each subsystem and each device driver.
   57:  *      2. Stop T-Kernel/SM and T-Kernel/OS.
   58:  *      3. Do power down or re-start according to 'fin'.
   59:  *      Never return from this function.
   60:  *
   61:  *      fin  =        0 : Power off
   62:  *              -1 : reset and re-start     (Reset -> Boot -> Start)
   63:  *              -2 : fast re-start          (Start)
   64:  *              -3 : Normal re-start                (Boot -> Start)
   65:  *
   66:  *      fin = -2 or -3 are not always supported.
   67:  */
   68: IMPORT void shutdown_system( INT fin );
   69: 
   70: /*
   71:  * Main initial task sequence (sysmain)
   72:  */
   73: IMPORT INT init_task_main( void );
   74: 
   75: /* ------------------------------------------------------------------------ */
   76: 
   77: /*
   78:  * Initial task
   79:  */
   80: EXPORT void init_task(void)
   81: {
   82:         INT fin;
   83: 
   84: #if USE_SYSDEPEND_PATCH1
   85:         /* System-dependent processes (before start_system) */
   86:         sysdepend_patch1();
   87: #endif
   88: 
   89:         /* Start system */
   90:         start_system();
   91: 
   92: #if USE_SYSDEPEND_PATCH2
   93:         /* System-dependent processes (after start_system) */
   94:         sysdepend_patch2();
   95: #endif
   96: 
   97:         /* Initial task main */
   98:         fin = init_task_main();
   99: 
  100:         /* Stop System */
  101:         shutdown_system(fin);  /* Never return */
  102: }
  103: 
  104: /*
  105:  * Initial task creation parameter
  106:  */
  107: IMPORT const T_CTSK c_init_task;
  108: 
  109: /*
  110:  * Entry for starting Kernel
  111:  */
  112: EXPORT int main( void )
  113: {
  114:         DO_DEBUG( tm_monitor(); )
  115: 
  116:         /* Initialize sequence before T-Kernel starts */
  117:         init_system();
  118: 
  119:         /* Start T-Kernel */
  120:         t_kernel_main((T_CTSK *)&c_init_task); /* Never return */
  121: 
  122:         return 0;
  123: }