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/*

 *  This routine is an implementation of the bsp_pretasking_hook

 *  that can be used by all m68k BSPs following linkcmds conventions

 *  regarding heap, stack, and workspace allocation.

 *

 *  COPYRIGHT (c) 1989-1999.

 *  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: m68kpretaskinghook.c,v 1.2 2001-09-27 12:00:24 chris Exp $

 */

#include <rtems.h>

#include <bsp.h>

#include <libcsupport.h>

/*

 *  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.

 *

 */

extern void bsp_libc_init( void *, unsigned long, int );

extern rtems_configuration_table  BSP_Configuration;

extern void          *_RamBase;

extern void          *_WorkspaceBase;

extern void          *_HeapSize;

unsigned long  _M68k_Ramsize;

void bsp_pretasking_hook(void)

{

    void         *heapStart;

    unsigned long heapSize = (unsigned long)&_HeapSize;

    unsigned long ramSpace;

    heapStart =  (void *)

       ((unsigned long)&_WorkspaceBase + BSP_Configuration.work_space_size);

    ramSpace = (unsigned long) &_RamBase + _M68k_Ramsize - (unsigned long) heapStart;

    if (heapSize == 0)

        heapSize = ramSpace;

    else if (heapSize > ramSpace)

        rtems_fatal_error_occurred (('H'<<24) | ('E'<<16) | ('A'<<8) | 'P');

    bsp_libc_init(heapStart, heapSize, 0);

#ifdef RTEMS_DEBUG

    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );

#endif

}