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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.

 *

 *  The MPC860 specific stuff was written by Jay Monkman (jmonkman@frasca.com)

 *

 *  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 12:00:36 chris Exp $

 */

#include <bsp.h>

#include <mpc860.h>

#include <rtems/libio.h>

#include <libcsupport.h>

#include <string.h>

#include <info.h>

#ifdef STACK_CHECKER_ON

#include <stackchk.h>

#endif

boardinfo_t M860_binfo;

/*

 *  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.

 *

 */

void

bsp_pretasking_hook(void)

{

  extern int       _end;

  rtems_unsigned32  heap_start;

  /*

   * Let's check to see if the size of M860_binfo is what

   * it should be. It might not be if the info.h files

   * for RTEMS and the bootloader define boardinfo_t

   * differently.

   */

  /* Oops. printf() won't work yet, since the console is not initialized.

     I should probably find some way of doing this though.

  if (M860_binfo.size != sizeof(boardinfo_t)) {

      printf("The size of the Board Info Block appears to be incorrect.\n");

      printf(" This could occur if the 'info.h' files for RTEMS and the\n");

      printf(" bootloader differ in their definition of boardinfo_t\n");

  }

  */

  heap_start = (rtems_unsigned32) &_end;

  /* Align the heap on a natural boundary (4 bytes?) */

  if (heap_start & (CPU_ALIGNMENT-1)) {

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

  }

  /* set up a 256K heap */

  bsp_libc_init((void *) heap_start, 256 * 1024, 0);

#ifdef STACK_CHECKER_ON

  /*

   *  Initialize the stack bounds checker

   *  We can either turn it on here or from the app.

   */

  Stack_check_Initialize();

#endif

#ifdef RTEMS_DEBUG

  rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );

#endif

}

void bsp_start(void)

{

  extern int _end;

  rtems_unsigned32  heap_start;

  rtems_unsigned32  ws_start;

  /*

   *  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".

   */

  heap_start = (rtems_unsigned32) &_end;

  if (heap_start & (CPU_ALIGNMENT-1))

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

  ws_start = heap_start + (256 * 1024);

  if (ws_start & ((512 * 1024) - 1)) {  /* align to 512K boundary */

    ws_start = (ws_start + (512 * 1024)) & ~((512 * 1024) - 1);

  }

  BSP_Configuration.work_space_start = (void *)ws_start;

  BSP_Configuration.work_space_size = 512 * 1024;

  /*

   *  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_usec = 1;  /* for 4MHz extclk */

  Cpu_table.serial_per_sec = 10000000;

  Cpu_table.serial_external_clock = 1;

  Cpu_table.serial_xon_xoff = 0;

  Cpu_table.serial_cts_rts = 1;

  Cpu_table.serial_rate = 9600;

  Cpu_table.timer_average_overhead = 0;

  Cpu_table.timer_least_valid = 0;

  Cpu_table.clock_speed = 40000000;

  /*

   * Since we are currently autodetecting whether to use SCC1 or

   * the FEC for ethernet, we set up a register in the ethernet

   * transciever that is used for 10/100 Mbps ethernet now, so that

   * we can attempt to read it later in rtems_enet_driver_attach()

  */

  m860.fec.mii_speed = 0x0a;

  m860.fec.mii_data = 0x680a0000;

  m860.scc2.sccm=0;

  m860.scc2p.rbase=0;

  m860.scc2p.tbase=0;

  M860ExecuteRISC(M860_CR_OP_STOP_TX | M860_CR_CHAN_SCC2);

  mmu_init();

}