Mercurial > flash_v2
diff packages/hal/mips/vrc4373/current/include/plf_z8530.h @ 76:435cced73e2f ecos-v1_3_1-release
eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
| author | jlarmour |
|---|---|
| date | Tue, 28 Mar 2000 14:10:45 +0000 |
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| children |
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new file mode 100644 --- /dev/null +++ b/packages/hal/mips/vrc4373/current/include/plf_z8530.h @@ -0,0 +1,109 @@ +#ifndef CYGONCE_HAL_PLF_Z8530_H +#define CYGONCE_HAL_PLF_Z8530_H + +//============================================================================= +// +// plf_z8530.h +// +// Platform header for Z8530 support. +// +//============================================================================= +//####COPYRIGHTBEGIN#### +// +// ------------------------------------------- +// The contents of this file are subject to the Red Hat eCos Public License +// Version 1.1 (the "License"); you may not use this file except in +// compliance with the License. You may obtain a copy of the License at +// http://www.redhat.com/ +// +// Software distributed under the License is distributed on an "AS IS" +// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the +// License for the specific language governing rights and limitations under +// the License. +// +// The Original Code is eCos - Embedded Configurable Operating System, +// released September 30, 1998. +// +// The Initial Developer of the Original Code is Red Hat. +// Portions created by Red Hat are +// Copyright (C) 1998, 1999, 2000 Red Hat, Inc. +// All Rights Reserved. +// ------------------------------------------- +// +//####COPYRIGHTEND#### +//============================================================================= +//#####DESCRIPTIONBEGIN#### +// +// Author(s): nickg +// Contributors:nickg +// Date: 1999-05-21 +// Purpose: Platform HAL Z8530 support. +// Usage: #include <cyg/hal/plf_z8530.h> +// +//####DESCRIPTIONEND#### +// +//============================================================================= + +#include <pkgconf/hal.h> + +/*---------------------------------------------------------------------------*/ +/* Zilog Z8530 access macros. */ + +#if defined(CYGPKG_HAL_MIPS_LSBFIRST) +# define DUART_BASE 0xc1000000 +#elif defined(CYGPKG_HAL_MIPS_MSBFIRST) +# define DUART_BASE 0xc1000003 +#else +#error MIPS endianness not defined by configuration +#endif + +// Address offsets for DUART channels +#define DUART_A 4 +#define DUART_B 0 + +/* Require Delay between Zilog chip (Z8530 and Z8536) register access */ + +//#define ZDEL 66 /* 66 Instructions for 66Mhz */ +#define ZDEL 200 /* 200 Instructions for 133Mhz */ + +#define DELAY_ZACC\ + { register int N = ZDEL; while (--N > 0); } + + +#define HAL_DUART_READ_CR( _chan_, _reg_, _val_) \ +CYG_MACRO_START \ + if( (_reg_) != 0 ) \ + { \ + DELAY_ZACC; \ + HAL_WRITE_UINT8( DUART_BASE+(_chan_), _reg_); \ + } \ + DELAY_ZACC; \ + HAL_READ_UINT8( DUART_BASE+(_chan_), _val_ ); \ +CYG_MACRO_END + +#define HAL_DUART_WRITE_CR( _chan_, _reg_, _val_ ) \ +CYG_MACRO_START \ + if( (_reg_) != 0 ) \ + { \ + DELAY_ZACC; \ + HAL_WRITE_UINT8( DUART_BASE+(_chan_), _reg_); \ + } \ + DELAY_ZACC; \ + HAL_WRITE_UINT8( DUART_BASE+(_chan_), _val_ ); \ +CYG_MACRO_END + +#define HAL_DUART_WRITE_TR( _chan_, _val_ ) \ +CYG_MACRO_START \ + DELAY_ZACC; \ + HAL_WRITE_UINT8( DUART_BASE+(_chan_)+8, _val_ ); \ +CYG_MACRO_END + +#define HAL_DUART_READ_RR( _chan_, _val_ ) \ +CYG_MACRO_START \ + DELAY_ZACC; \ + HAL_READ_UINT8( DUART_BASE+(_chan_)+8, _val_ ); \ +CYG_MACRO_END + +//----------------------------------------------------------------------------- +#endif // CYGONCE_HAL_PLF_Z8530_H +// End of plf_z8530.h