Subversion Repositories openrisc_2011-10-31

/*

 *  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.

 *

 *  Ported to the i386ex and submitted by:

 *

 *    Erik Ivanenko

 *    University of Toronto

 *    erik.ivanenko@utoronto.ca

 *

 *  $Id: bspstart.c,v 1.2 2001-09-27 11:59:50 chris Exp $

 */

void bsp_clean_up(void);

#include <bsp.h>

#include <rtems/libio.h>

#include <libcsupport.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;

/*

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

 */

extern rtems_unsigned32  rdb_start;

/*

 *  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 heap_bottom;

    rtems_unsigned32 heap_start;

    rtems_unsigned32 heap_size;

    heap_start = (rtems_unsigned32) &heap_bottom;

    if (heap_start & (CPU_ALIGNMENT-1))

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

    heap_size = BSP_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);

#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 )

{

     /*

    *  we do not use the pretasking_hook.

   */

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

  Cpu_table.postdriver_hook = bsp_postdriver_hook;

  Cpu_table.interrupt_table_segment = get_ds();

  Cpu_table.interrupt_table_offset = (void *)Interrupt_descriptor_table;

  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;

  BSP_Configuration.work_space_start = (void *)

     RAM_END - BSP_Configuration.work_space_size;

  /*

   * Init rtems_interrupt_management

   */

  rtems_irq_mngt_init();

  /*

   * Init rtems exceptions management

   */

  rtems_exception_init_mngt();

  /*

   *  The following information is very useful when debugging.

   */

#ifdef BSP_DEBUG

  printk( "RAM_START = 0x%x\nRAM_END = 0x%x\n", RAM_START, RAM_END );

  printk( "work_space_start = 0x%x\n",

     BSP_Configuration.work_space_start );

  printk( "work_space_size = 0x%x\n",

     BSP_Configuration.work_space_size );

  printk( "maximum_extensions = 0x%x\n",

     BSP_Configuration.maximum_extensions );

  printk( "microseconds_per_tick = 0x%x\n",

     BSP_Configuration.microseconds_per_tick );

  printk( "ticks_per_timeslice = 0x%x\n",

     BSP_Configuration.ticks_per_timeslice );

  printk( "maximum_devices = 0x%x\n",

     BSP_Configuration.maximum_devices );

  printk( "number_of_device_drivers = 0x%x\n",

     BSP_Configuration.number_of_device_drivers );

  printk( "Device_driver_table = 0x%x\n",

     BSP_Configuration.Device_driver_table );

  /*  printk( "_heap_size = 0x%x\n", _heap_size );

      printk( "_stack_size = 0x%x\n", _stack_size ); */

#endif

}

void bsp_clean_up(void) {

  printk("bsp_cleanup called\n");

}