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/*  bspstart.c

 *

 *  This set of routines starts the application.  It includes application,

 *  board, and monitor specific initialization and configuration.

 *  The generic CPU dependent initialization has been performed

 *  before any of these are invoked.

 *

 *  COPYRIGHT (c) 1989-1997.

 *  On-Line Applications Research Corporation (OAR).

 *  Copyright assigned to U.S. Government, 1994.

 *

 *  The license and distribution terms for this file may in

 *  the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 *  $Id:

 */

#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;

rtems_unsigned32                  bsp_isr_level;

/*

 *  Use the shared implementations of the following routines

 */

void bsp_postdriver_hook(void);

void bsp_libc_init( void *, unsigned32, int );

/*PAGE

 *

 *  bsp_pretasking_hook

 *

 *  BSP pretasking hook.  Called just before drivers are initialized.

 *  Used to setup libc and install any BSP extensions.

 */

void bsp_pretasking_hook(void)

{

  extern int end;

  rtems_unsigned32 heap_start;

  rtems_unsigned32 heap_size;

  heap_start = (rtems_unsigned32) &end;

  if (heap_start & (CPU_ALIGNMENT-1))

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

  heap_size = BSP_Configuration.work_space_start - (void *)&end;

  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

}

/*PAGE

 *

 *  bsp_predriver_hook

 *

 *  Before drivers are setup initialize interupt vectors.

 */

void init_RTC();

void initialize_PMC();

void bsp_predriver_hook(void)

{

  init_RTC();

  init_PCI();

  initialize_universe();

  initialize_PCI_bridge ();

#if (HAS_PMC_PSC8)

  initialize_PMC();

#endif

 /*

  * Initialize Bsp General purpose vector table.

  */

 initialize_external_exception_vector();

#if (0)

  /*

   * XXX - Modify this to write a 48000000 (loop to self) command

   *       to each interrupt location.  This is better for debug.

   */

 bsp_spurious_initialize();

#endif

}

/*PAGE

 *

 *  initialize_PMC

 */

void initialize_PMC() {

  volatile rtems_unsigned32 *PMC_addr;

  rtems_unsigned8  data;

#if (0) /* First Values sent */

  /*

   * set PMC base address.

   */

  PMC_addr  = SCORE603E_PCI_DEVICE_ADDRESS( 0x14 );

  *PMC_addr = (SCORE603E_PCI_REGISTER_BASE >> 24) & 0x3f;

  /*

   * Clear status, enable SERR and memory space only.

   */

  PMC_addr = SCORE603E_PCI_DEVICE_ADDRESS( 0x4 );

  *PMC_addr = 0x0201ff37;

  /*

   * Bit 0 and 1 HI cause Medium Loopback to occur.

   */

  PMC_addr = (volatile rtems_unsigned32 *)

        SCORE603E_PMC_SERIAL_ADDRESS( 0x100000 );

  data = *PMC_addr;

  /*   *PMC_addr = data | 0x3;  */

  *PMC_addr = data & 0xfc;

#endif

#if (1)

  /*

   * Clear status, enable SERR and memory space only.

   */

  PMC_addr = SCORE603E_PCI_DEVICE_ADDRESS( 0x4 );

  *PMC_addr = 0x020080cc;

  /*

   * set PMC base address.

   */

  PMC_addr  = SCORE603E_PCI_DEVICE_ADDRESS( 0x14 );

  *PMC_addr = (SCORE603E_PCI_REGISTER_BASE >> 24) & 0x3f;

  PMC_addr = (volatile rtems_unsigned32 *)

      SCORE603E_PMC_SERIAL_ADDRESS( 0x100000 );

  data = *PMC_addr;

  *PMC_addr = data & 0xfc;

#endif

}

/*PAGE

 *

 *  SCORE603e_bsp_postdriver_hook

 *

 *  Standard post driver hook plus some BSP specific stuff.

 */

void SCORE603e_bsp_postdriver_hook(void)

{

  extern void Init_EE_mask_init(void);

  bsp_postdriver_hook();

  Init_EE_mask_init();

}

void bsp_set_trap_vectors( void );

/*PAGE

 *

 *  bsp_start

 *

 *  This routine does the bulk of the system initialization.

 */

void bsp_start( void )

{

  unsigned char *work_space_start;

  unsigned int  msr_value = 0x0000;

  volatile rtems_unsigned32 *ptr;

  delay( 1000 );

  /*

   *  Zero out lots of memory

   */

  memset(

    &end,

    0,

    (unsigned char *)&RAM_END - (unsigned char *) &end

  );

  /*

   *  There are multiple ROM monitors available for this board.

   */

#if (SCORE603E_USE_SDS)

  /*

   * Write instruction for Unconditional Branch to ROM vector.

   */

   Code = 0x4bf00002;

   for (Address = 0x100; Address <= 0xe00; Address += 0x100) {

     A_Vector = (unsigned32    *)Address;

     Code = 0x4bf00002 + Address;

     *A_Vector = Code;

   }

   for (Address = 0x1000; Address <= 0x1400; Address += 0x100) {

     A_Vector = (unsigned32    *)Address;

     Code = 0x4bf00002 + Address;

     *A_Vector = Code;

   }

  Cpu_table.exceptions_in_RAM = TRUE;

  msr_value = 0x2030;

#elif (SCORE603E_USE_OPEN_FIRMWARE)

  Cpu_table.exceptions_in_RAM = TRUE;

  msr_value = 0x2030;

#elif (SCORE603E_USE_NONE)

  Cpu_table.exceptions_in_RAM = TRUE;

  msr_value = 0x2030;

  _CPU_MSR_SET( msr_value );

  bsp_set_trap_vectors();

#elif (SCORE603E_USE_DINK)

  Cpu_table.exceptions_in_RAM = TRUE;

  msr_value = 0x2030;

  _CPU_MSR_SET( msr_value );

  /*

   * Override the DINK error on a Decrementor interrupt.

   */

  /* org    dec_vector  - rfi */

  ptr = (rtems_unsigned32 *)0x900;

  *ptr = 0x4c000064;

#else

#error "SCORE603E BSPSTART.C -- what ROM monitor are you using"

#endif

  _CPU_MSR_SET( msr_value );

  /*

   *  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".

   */

  work_space_start =

    (unsigned char *)&RAM_END - BSP_Configuration.work_space_size;

  if ( work_space_start <= (unsigned char *)&end ) {

    DEBUG_puts( "bspstart: Not enough RAM!!!\n" );

    bsp_cleanup();

  }

  BSP_Configuration.work_space_start = work_space_start;

  /*

   *  initialize the CPU table for this BSP

   */

  /* Cpu_table.exceptions_in_RAM was set above */

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

  Cpu_table.predriver_hook  = bsp_predriver_hook;   /* Init vectors    */

  Cpu_table.postdriver_hook = SCORE603e_bsp_postdriver_hook;

  Cpu_table.clicks_per_usec = 66 / 4;  /* XXX get from linkcmds */

  Cpu_table.do_zero_of_workspace = TRUE;

  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;

  Cpu_table.idle_task_stack_size = (3 * STACK_MINIMUM_SIZE);

#if ( PPC_USE_DATA_CACHE )

  instruction_cache_enable ();

  data_cache_enable ();

#endif

}