path: root/c/src/lib/libbsp/i386/i386ex/startup/bspstart.c

/*
 *  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.rtems.com/license/LICENSE.
 *
 *  Ported to the i386ex and submitted by:
 *
 *    Erik Ivanenko
 *    University of Toronto
 *    erik.ivanenko@utoronto.ca
 *
 *  $Id$
 */

void bsp_clean_up(void);

#include <bsp.h>
#include <bsp/irq.h>
#include <rtems/libio.h>
#include <rtems/libcsupport.h>

/*
 *  Tells us where to put the workspace in case remote debugger is present.
 */

extern uint32_t          rdb_start;

/*
 *  Use the shared implementations of the following routines
 */

void bsp_libc_init( void *, uint32_t, 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 heap_bottom;
    uint32_t         heap_start;
    uint32_t         heap_size;

    heap_start = (uint32_t) &heap_bottom;
    if (heap_start & (CPU_ALIGNMENT-1))
      heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);

    heap_size = Configuration.work_space_start -(void *) heap_start ;
    heap_size &= 0xfffffff0;  /* keep it as a multiple of 16 bytes */

    bsp_libc_init((void *) heap_start, heap_size, 0);
}

/*
 *  bsp_start
 *
 *  This routine does the bulk of the system initialization.
 */

void bsp_start( void )
{
  void rtems_irq_mngt_init();

  Configuration.work_space_start = (void *)
     RAM_END - rtems_configuration_get_work_space_size();
#ifdef DEBUG
  printk("workspace size = 0x%x\nstart = 0x%x, RAM_END = 0x%x\n",rtems_configuration_get_work_space_size(),  Configuration.work_space_start, RAM_END );
#endif

  /*
   *  Account for the console's resources
   */

  /*
   * Init rtems_interrupt_management
   */
  rtems_irq_mngt_init();
}
void bsp_clean_up(void) {
  printk("bsp_cleanup called\n");
}