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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 Red Hat, 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

// Software Foundation; either version 2 or (at your option) any later version.

//

// eCos is distributed in the hope that it will be useful, but WITHOUT ANY

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

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

// for more details.

//

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

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

// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

//

// 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, this file does not

// by itself cause the resulting work to be covered by the GNU General Public

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// in accordance with section (3) of the GNU General Public License.

//

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// this file might be covered by the GNU General Public License.

//

// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.

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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

void hal_platform_init(void)

{

    // Set up eCos/ROM interfaces

    hal_if_init();

}

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

/* Delay for some number of useconds.                                     */

void

hal_delay_us(int us)

{

    us /= 20;  // horrible code genration right now

    while (us-- > 0) ;

}

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

/* Reset support                                                          */

void hal_ceb_reset(void)

{

}

void hal_plf_write_prog_halfword(unsigned 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                                                      */