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/*

 *  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) 1989-1999.

 *  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: bspstart.c,v 1.2 2001-09-27 12:00:25 chris Exp $

 */

/*

 *  Rather than deleting this, it is commented out to (hopefully) help

 *  the submitter send updates.

 *

 *  static char _sccsid[] = "@(#)bspstart.c 06/11/96     1.2\n";

 */

#include <bsp.h>

#include <rtems/libio.h>

#include <libcsupport.h>

#include <string.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.

 *

 */

#define LIBC_HEAP_SIZE (64 * 1024)

void bsp_pretasking_hook(void)

{

    extern int end;

    rtems_unsigned32        heap_start;

    heap_start = (rtems_unsigned32) &end;

    if (heap_start & (CPU_ALIGNMENT-1))

        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);

    bsp_libc_init((void *) heap_start, LIBC_HEAP_SIZE, 0);

#ifdef RTEMS_DEBUG

    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );

#endif

}

extern int end; /* defined by linker */

/*

 *  bsp_start

 *

 *  This routine does the bulk of the system initialization.

 */

void bsp_start( void )

{

  /*

   *  Allocate the memory for the RTEMS Work Space.  This can come from

   *  a variety of places: hard coded address, malloc'ed from outside

   *  RTEMS world (e.g. simulator or primitive memory manager), or (as

   *  typically done by stock BSPs) by subtracting the required amount

   *  of work space from the last physical address on the CPU board.

   */

  /*

   *  Need to "allocate" the memory for the RTEMS Workspace and

   *  tell the RTEMS configuration where it is.  This memory is

   *  not malloc'ed.  It is just "pulled from the air".

   */

  BSP_Configuration.work_space_start =

       (void *)((unsigned64)((&end) + LIBC_HEAP_SIZE + 0x2000) & ~0x7);

  /*

   *  initialize the CPU table for this BSP

   */

  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */

  Cpu_table.postdriver_hook = bsp_postdriver_hook;

  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;

  Cpu_table.clicks_per_microsecond = CPU_CLOCK_RATE_MHZ;

}