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/*  bsp_start()

 *

 *  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.

 *

 *  INPUT:  NONE

 *

 *  OUTPUT: NONE

 *

 *  Author:     Thomas Doerfler <td@imd.m.isar.de>

 *              IMD Ingenieurbuero fuer Microcomputertechnik

 *

 *  COPYRIGHT (c) 1998 by IMD

 *

 *  Changes from IMD are covered by the original distributions terms.

 *  This file has been derived from the papyrus BSP:

 *

 *  Author:     Andrew Bray <andy@i-cubed.co.uk>

 *

 *  COPYRIGHT (c) 1995 by i-cubed ltd.

 *

 *  To anyone who acknowledges that this file is provided "AS IS"

 *  without any express or implied warranty:

 *      permission to use, copy, modify, and distribute this file

 *      for any purpose is hereby granted without fee, provided that

 *      the above copyright notice and this notice appears in all

 *      copies, and that the name of i-cubed limited not be used in

 *      advertising or publicity pertaining to distribution of the

 *      software without specific, written prior permission.

 *      i-cubed limited makes no representations about the suitability

 *      of this software for any purpose.

 *

 *  Modifications for spooling console driver and control of memory layout

 *  with linker command file by

 *              Thomas Doerfler <td@imd.m.isar.de>

 *  for these modifications:

 *  COPYRIGHT (c) 1997 by IMD, Puchheim, Germany.

 *

 *  To anyone who acknowledges that this file is provided "AS IS"

 *  without any express or implied warranty:

 *      permission to use, copy, modify, and distribute this file

 *      for any purpose is hereby granted without fee, provided that

 *      the above copyright notice and this notice appears in all

 *      copies. IMD makes no representations about the suitability

 *      of this software for any purpose.

 *

 *  Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/bspstart.c:

 *

 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.

 *  On-Line Applications Research Corporation (OAR).

 *  All rights assigned to U.S. Government, 1994.

 *

 *  This material may be reproduced by or for the U.S. Government pursuant

 *  to the copyright license under the clause at DFARS 252.227-7013.  This

 *  notice must appear in all copies of this file and its derivatives.

 *

 *  Modifications for PPC405GP by Dennis Ehlin

 *

 *  bspstart.c,v 1.1 2001/11/08 23:46:58 joel Exp

 */

#include <string.h>

#include <fcntl.h>

#include <bsp.h>

#include <rtems/libio.h>

#include <rtems/libcsupport.h>

#include <ictrl.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;

void *bsp_ram_end = (void *)RAM_END;  /* first addr behind avail. ram area */

/*      Initialize whatever libc we are using

 *      called from postdriver hook

 */

void bsp_postdriver_hook(void);

void bsp_libc_init( void *, unsigned32, int );

/*

 *

 *  bsp_predriver_hook

 *

 *  Before drivers are setup.

 */

void bsp_predriver_hook(void)

{

  rtems_status_code status;

  /* init the PPC405 external interrupt controller handler... */

  status = ictrl_init();

}

/*

 *  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 _end;

    extern int _heap_end;

    rtems_unsigned32        heap_start;

    rtems_unsigned32        heap_size;

    rtems_unsigned32        heap_end;

    heap_start = (rtems_unsigned32) &_end;

    if (heap_start & (CPU_ALIGNMENT-1))

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

    heap_end = (rtems_unsigned32) &_heap_end;

    if (heap_end & (CPU_ALIGNMENT-1))

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

    heap_size = heap_end - heap_start;

    bsp_libc_init((void *) heap_start, heap_size, 0); /* 64 * 1024 */

#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 )

{

  /*

   *  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".

   */

  /* FIME: plan usage of RAM better:

     - make top of ram dynamic,

     - take out some part for persistant log

     - make rest of ram to heap...

     -remove RAM_END from bsp.h, this cannot be valid...

      or must be a function call

   */

  BSP_Configuration.work_space_start = (void *)

      ((char *)(bsp_ram_end)) - BSP_Configuration.work_space_size;

  /*

   *  initialize the CPU table for this BSP

   */

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

  Cpu_table.predriver_hook  = bsp_predriver_hook;

  Cpu_table.postdriver_hook = bsp_postdriver_hook;

  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;

  Cpu_table.clicks_per_usec = 300;

  Cpu_table.serial_per_sec = 14625000; /* = (CPU Clock / UART Internal Clock Divisor) */

  Cpu_table.serial_external_clock = 0;

  Cpu_table.timer_internal_clock  = 1;

  Cpu_table.serial_xon_xoff = 0;

  Cpu_table.serial_cts_rts = 1;

  Cpu_table.serial_rate = 115200;

  Cpu_table.timer_average_overhead = 2;

  Cpu_table.timer_least_valid = 3;

  Cpu_table.exceptions_in_RAM = TRUE;

}