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/*-------------------------------------------------------------------------+

| This file contains the ARM BSP startup package. 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) 2000 Canon Research Centre France SA.

| Emmanuel Raguet, mailto:raguet@crf.canon.fr

|

|   The license and distribution terms for this file may be

|   found in found in the file LICENSE in this distribution or at

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

|

+--------------------------------------------------------------------------*/

#include <bsp.h>

#include <rtems/libcsupport.h>

#include <rtems/libio.h>

#include <uart.h>

/*-------------------------------------------------------------------------+

| Global Variables

+--------------------------------------------------------------------------*/

volatile unsigned long *Regs = (unsigned long*)0xF0000;                 /* Chip registers */

extern rtems_unsigned32 _end;         /* End of BSS. Defined in 'linkcmds'. */

/*

 * Size of heap if it is 0 it will be dynamically defined by memory size,

 * otherwise the value should be changed by binary patch

 */

rtems_unsigned32 _heap_size = 0;

/* Size of stack used during initialization. Defined in 'start.s'.  */

extern rtems_unsigned32 _stack_size;

rtems_unsigned32 rtemsFreeMemStart;

                         /* Address of start of free memory - should be updated

                            after creating new partitions or regions.         */

/* The original BSP configuration 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;                     /* CPU configuration table.    */

char            *rtems_progname;               /* Program name - from main(). */

/*-------------------------------------------------------------------------+

| External Prototypes

+--------------------------------------------------------------------------*/

extern void rtems_irq_mngt_init(void);

void bsp_libc_init( void *, unsigned32, int );

void bsp_postdriver_hook(void);

/*-------------------------------------------------------------------------+

|         Function: bsp_pretasking_hook

|      Description: BSP pretasking hook.  Called just before drivers are

|                   initialized. Used to setup libc and install any BSP

|                   extensions. NOTE: Must not use libc (to do io) from here,

|                   since drivers are not yet initialized.

| Global Variables: None.

|        Arguments: None.

|          Returns: Nothing.

+--------------------------------------------------------------------------*/

void bsp_pretasking_hook(void)

{

  if(_heap_size == 0)

    {

      _heap_size = 0x420000 - rtemsFreeMemStart;

    }

  bsp_libc_init((void *)rtemsFreeMemStart, _heap_size, 0);

  rtemsFreeMemStart += _heap_size;           /* HEAP_SIZE  in KBytes */

#ifdef RTEMS_DEBUG

  rtems_debug_enable(RTEMS_DEBUG_ALL_MASK);

#endif /* RTEMS_DEBUG */

} /* bsp_pretasking_hook */

/*-------------------------------------------------------------------------+

|         Function: bsp_start

|      Description: Called before main is invoked.

| Global Variables: None.

|        Arguments: None.

|          Returns: Nothing.

+--------------------------------------------------------------------------*/

void bsp_start_default( void )

{

  rtemsFreeMemStart = (rtems_unsigned32)(&_end);  /* &_end+_stack_size;*/

                                    /* set the value of start of free memory. */

  /* If we don't have command line arguments set default program name. */

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

  Cpu_table.predriver_hook          = NULL;                /* use system's    */

  Cpu_table.postdriver_hook         = bsp_postdriver_hook;

  Cpu_table.idle_task               = NULL;

                                          /* do not override system IDLE task */

  Cpu_table.do_zero_of_workspace    = TRUE;

  Cpu_table.interrupt_stack_size    = 4096;

  Cpu_table.extra_mpci_receive_server_stack = 0;

  /* Place RTEMS workspace at beginning of free memory. */

  BSP_Configuration.work_space_start = (void *)rtemsFreeMemStart;

   rtemsFreeMemStart += BSP_Configuration.work_space_size;

  /*

   * Init rtems exceptions management

   */

  rtems_exception_init_mngt();

  /*

   * Init rtems interrupt management

   */

  rtems_irq_mngt_init();

  /*

   *  The following information is very useful when debugging.

   */

#if 0

  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 );*/

  printk( "rtemsFreeMemStart = 0x%x\n", rtemsFreeMemStart );

  printk( "work_space_start = 0x%x\n", BSP_Configuration.work_space_start );

  printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size );

#endif

} /* bsp_start */

/*

 *  By making this a weak alias for bsp_start_default, a brave soul

 *  can override the actual bsp_start routine used.

 */

void bsp_start (void) __attribute__ ((weak, alias("bsp_start_default")));