source: rtems/c/src/lib/libbsp/mips/genmongoosev/startup/bspstart.c @ 2cdde6d

/*
 *  This routine starts the application.  It includes application,
 *  board, and monitor specific initialization and configuration.
 *  The generic CPU dependent initialization has been performed
 *  before this routine is invoked.
 *
 *  COPYRIGHT (c) 1989-2001.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.OARcorp.com/rtems/license.html.
 *
 *  $Id$
 */

#include <string.h>

#include <bsp.h>
#include <rtems/libio.h>
#include <rtems/libcsupport.h>
#include <libcpu/mongoose-v.h>

/*
 *  The original table from the application and our copy of it with
 *  some changes.
 */

extern rtems_configuration_table Configuration;

rtems_configuration_table  BSP_Configuration;

rtems_cpu_table Cpu_table;

char *rtems_progname;

/*
 *  Use the shared implementations of the following routines
 */
 
void bsp_postdriver_hook(void);
void bsp_libc_init( void *, unsigned32, int );

/*
 *  Function:   bsp_pretasking_hook
 *  Created:    95/03/10
 *
 *  Description:
 *      BSP pretasking hook.  Called just before drivers are initialized.
 *      Used to setup libc and install any BSP extensions.
 *
 *  NOTES:
 *      Must not use libc (to do io) from here, since drivers are
 *      not yet initialized.
 *
 */
 
void bsp_pretasking_hook(void)
{
    extern int   HeapBase;
    extern int   HeapSize;
    void         *heapStart = &HeapBase;
    unsigned long heapSize = (unsigned long)&HeapSize;

    bsp_libc_init(heapStart, (unsigned32) heapSize, 0);

#ifdef RTEMS_DEBUG
    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
#endif
}
 
/*
 *  bsp_start
 *
 *  This routine does the bulk of the system initialization.
 */

void bsp_start( void )
{
  extern int _end;
  extern int WorkspaceBase;
  extern int _RamSize, _RamBase;
  int ram_left;

  ram_left = (unsigned32) &_RamSize - 
             (unsigned32)&WorkspaceBase - (unsigned32) &_RamBase;

  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
  Cpu_table.postdriver_hook = bsp_postdriver_hook;
  Cpu_table.interrupt_stack_size = 4096;

  if ( BSP_Configuration.work_space_size >  ram_left )
    _sys_exit( 1 );

  BSP_Configuration.work_space_start = (void *) &WorkspaceBase;

  /* Clear all pending peripheral interrupts and mask them. */
   
  MONGOOSEV_WRITE( MONGOOSEV_PERIPHERAL_FUNCTION_INTERRUPT_CAUSE_REGISTER, 0 );
  MONGOOSEV_WRITE( MONGOOSEV_PERIPHERAL_FUNCTION_INTERRUPT_MASK_REGISTER, 0 );

  /*
   *  Enable coprocessors.
   *  Disable external interrupts.
   *  Enable software interrupts.
   */

  mips_set_sr( (SR_CU0 | SR_CU1 | SR_IBIT1 | SR_IBIT2) );

  mips_install_isr_entries();
}