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//==========================================================================

//

//      plf_misc.c

//

//      HAL platform miscellaneous functions

//

//==========================================================================

// ####ECOSGPLCOPYRIGHTBEGIN####                                            

// -------------------------------------------                              

// This file is part of eCos, the Embedded Configurable Operating System.   

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under    

// the terms of the GNU General Public License as published by the Free     

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// version.                                                                 

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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    

// for more details.                                                        

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// You should have received a copy of the GNU General Public License        

// along with eCos; if not, write to the Free Software Foundation, Inc.,    

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//

// As a special exception, if other files instantiate templates or use      

// macros or inline functions from this file, or you compile this file      

// and link it with other works to produce a work based on this file,       

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// General Public License v2.                                               

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// ####ECOSGPLCOPYRIGHTEND####                                              

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    nickg

// Contributors: nickg, jlarmour, dmoseley, msalter

// Date:         2000-06-06

// Purpose:      HAL miscellaneous functions

// Description:  This file contains miscellaneous functions provided by the

//               HAL.

//

//####DESCRIPTIONEND####

//

//========================================================================*/

#define CYGARC_HAL_COMMON_EXPORT_CPU_MACROS

#include <pkgconf/hal.h>

#include <cyg/infra/cyg_type.h>         // Base types

#include <cyg/infra/cyg_trac.h>         // tracing macros

#include <cyg/infra/cyg_ass.h>          // assertion macros

#include <cyg/hal/hal_arch.h>           // architectural definitions

#include <cyg/hal/hal_intr.h>           // Interrupt handling

#include <cyg/hal/hal_cache.h>          // Cache handling

#include <cyg/hal/hal_if.h>

/*------------------------------------------------------------------------*/

#if defined(CYGPKG_CYGMON)

#include CYGHWR_MEMORY_LAYOUT_H

extern unsigned long cygmon_memsize;

#endif

extern void __txchar(unsigned ch);

void hal_platform_init(void)

{

    // Set up eCos/ROM interfaces

    hal_if_init();

}

/*------------------------------------------------------------------------*/

/* Delay for some number of useconds.                                     */

void

hal_delay_us(cyg_uint32 us)

{

    us /= 3;

    while (us-- > 0);

}

/*------------------------------------------------------------------------*/

/* Reset support                                                          */

void hal_ceb_reset(void)

{

}

void hal_plf_write_prog_halfword(unsigned long addr, unsigned short val)

{

  unsigned short pch = addr >> 16;

  unsigned short pcl = addr & 0xffff;

  while(cyg_hal_plf_read_sr_tbr() & 1); // while TXD_FULL

  cyg_hal_plf_write_tbr(pch);

  cyg_hal_plf_write_sr_tbr(0x03);       // addr_high short

  while(cyg_hal_plf_read_sr_tbr() & 1); // while TXD_FULL

  cyg_hal_plf_write_tbr(pcl);

  cyg_hal_plf_write_sr_tbr(0x05);       // addr_low short

  while(cyg_hal_plf_read_sr_tbr() & 1); // while TXD_FULL

  cyg_hal_plf_write_tbr(val);

  cyg_hal_plf_write_sr_tbr(0x07);       // program data value

  while(cyg_hal_plf_read_sr_tbr() & 1); // while TXD_FULL

}

/*------------------------------------------------------------------------*/

/* End of plf_misc.c                                                      */