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#ifndef CYGONCE_HAL_HAL_DIAG_H

#define CYGONCE_HAL_HAL_DIAG_H

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

//

//      hal_diag.h

//

//      HAL Support for Kernel Diagnostic Routines

//

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

//####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

// License. However the source code for this file must still be made available

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

//

// This exception does not invalidate any other reasons why a work based on

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

//

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

// at http://sources.redhat.com/ecos/ecos-license/

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

//####ECOSGPLCOPYRIGHTEND####

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

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

//

// Author(s):   hmt

// Contributors:        hmt

// Date:        1999-01-11

// Purpose:     HAL Support for Kernel Diagnostic Routines

// Description: Diagnostic routines for use during kernel development.

// Usage:       #include <cyg/hal/hal_diag.h>

//

//####DESCRIPTIONEND####

//

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

#include <pkgconf/system.h>

#include <pkgconf/hal.h>

#include <pkgconf/hal_sparclite.h>

#include <pkgconf/hal_sparclite_sleb.h>

#include <cyg/infra/cyg_type.h>

#include <cyg/hal/hal_hwio.h>

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

/* SPARClite Evaluation Board - SLEB - 86940 SDTR output (+ the LEDs)        */

#define SLEB_LED (*(volatile char *)(0x02000003))

#define SLEB_86940_SDTR0_OUT

#ifdef  SLEB_86940_SDTR0_OUT

#define HAL_SPARC_86940_FLAG_TXRDY  (0x01)

#define HAL_SPARC_86940_FLAG_RXRDY  (0x02)

#define HAL_DIAG_WRITE_CHAR_DIRECT(_c_) CYG_MACRO_START                     \

    cyg_uint32 status = 0;                                                  \

    while ( 0 == (HAL_SPARC_86940_FLAG_TXRDY & status) ) {                  \

        HAL_SPARC_86940_SDTR0_STAT_READ( status );                          \

    }                                                                       \

    HAL_SPARC_86940_SDTR0_TXDATA_WRITE( _c_ );                              \

CYG_MACRO_END

#define HAL_DIAG_WRITE_CHAR_WAIT_FOR_EMPTY() CYG_MACRO_START                \

    cyg_uint32 status = HAL_SPARC_86940_FLAG_TXRDY;                         \

    while ( 0 != (HAL_SPARC_86940_FLAG_TXRDY & status) ) {                  \

        HAL_SPARC_86940_SDTR0_STAT_READ( status );                          \

    }                                                                       \

CYG_MACRO_END

#ifdef CYG_KERNEL_DIAG_GDB

// then use routines from hal_diag.c:

externC void hal_diag_init(void);

externC void hal_diag_write_char(char c);

#define HAL_DIAG_INIT() hal_diag_init()

#define HAL_DIAG_WRITE_CHAR(_c_) CYG_MACRO_START                    \

    SLEB_LED = (_c_); /* immediately */                             \

    hal_diag_write_char(_c_);                                       \

CYG_MACRO_END

#else // CYG_KERNEL_DIAG_GDB

// else go to the serial line directly (after initialization):

externC void hal_diag_init(void);

#define HAL_DIAG_INIT() hal_diag_init()

#define HAL_DIAG_WRITE_CHAR(_c_) CYG_MACRO_START                    \

    SLEB_LED = (_c_);                                               \

    HAL_DIAG_WRITE_CHAR_DIRECT( _c_ );                              \

CYG_MACRO_END

#endif // CYG_KERNEL_DIAG_GDB

#define HAL_DIAG_READ_CHAR(_c_) (_c_) = 0

#else

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

/* SPARClite Evaluation Board - SLEB - Just use the LEDs on board            */

#define HAL_DIAG_INIT()

#define HAL_DIAG_WRITE_CHAR(_c_) CYG_MACRO_START                            \

      SLEB_LED = (_c_);                                                     \

CYG_MACRO_END

#define HAL_DIAG_READ_CHAR(_c_) (_c_) = 0

#endif // SLEB_86940_SDTR0_OUT

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

/* end of hal_diag.h                                                         */

#endif /* CYGONCE_HAL_HAL_DIAG_H */