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#ifndef CYGONCE_HAL_PLF_Z8530_H
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#define CYGONCE_HAL_PLF_Z8530_H
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//=============================================================================
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//
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// plf_z8530.h
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//
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// Platform header for Z8530 support.
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//
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//=============================================================================
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//####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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//
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// As a special exception, if other files instantiate templates or use macros
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// or inline functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. However the source code for this file must still be made available
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// in accordance with section (3) of the GNU General Public License.
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//
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// This exception does not invalidate any other reasons why a work based on
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// this file might be covered by the GNU General Public License.
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//
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// at http://sources.redhat.com/ecos/ecos-license/
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
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//=============================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): nickg
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// Contributors:nickg
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// Date: 1999-05-21
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// Purpose: Platform HAL Z8530 support.
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// Usage: #include <cyg/hal/plf_z8530.h>
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//
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//####DESCRIPTIONEND####
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//
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//=============================================================================
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#include <pkgconf/hal.h>
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/*---------------------------------------------------------------------------*/
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/* Zilog Z8530 access macros. */
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#if defined(CYGPKG_HAL_MIPS_LSBFIRST)
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# define DUART_BASE 0xc1000000
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#elif defined(CYGPKG_HAL_MIPS_MSBFIRST)
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# define DUART_BASE 0xc1000003
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#else
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#error MIPS endianness not defined by configuration
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#endif
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// Address offsets for DUART channels
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#define DUART_A 4
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#define DUART_B 0
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/* Require Delay between Zilog chip (Z8530 and Z8536) register access */
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//#define ZDEL 66 /* 66 Instructions for 66Mhz */
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#define ZDEL 200 /* 200 Instructions for 133Mhz */
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#define DELAY_ZACC\
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{ register int N = ZDEL; while (--N > 0); }
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#define HAL_DUART_READ_CR( _chan_, _reg_, _val_) \
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CYG_MACRO_START \
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if( (_reg_) != 0 ) \
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{ \
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DELAY_ZACC; \
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HAL_WRITE_UINT8( DUART_BASE+(_chan_), _reg_); \
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} \
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DELAY_ZACC; \
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HAL_READ_UINT8( DUART_BASE+(_chan_), _val_ ); \
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CYG_MACRO_END
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#define HAL_DUART_WRITE_CR( _chan_, _reg_, _val_ ) \
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CYG_MACRO_START \
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if( (_reg_) != 0 ) \
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{ \
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DELAY_ZACC; \
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HAL_WRITE_UINT8( DUART_BASE+(_chan_), _reg_); \
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} \
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DELAY_ZACC; \
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HAL_WRITE_UINT8( DUART_BASE+(_chan_), _val_ ); \
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CYG_MACRO_END
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#define HAL_DUART_WRITE_TR( _chan_, _val_ ) \
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CYG_MACRO_START \
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DELAY_ZACC; \
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HAL_WRITE_UINT8( DUART_BASE+(_chan_)+8, _val_ ); \
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CYG_MACRO_END
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#define HAL_DUART_READ_RR( _chan_, _val_ ) \
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CYG_MACRO_START \
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DELAY_ZACC; \
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HAL_READ_UINT8( DUART_BASE+(_chan_)+8, _val_ ); \
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CYG_MACRO_END
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//-----------------------------------------------------------------------------
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#endif // CYGONCE_HAL_PLF_Z8530_H
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// End of plf_z8530.h
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