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Merge from eCos master repository on 2002-05-20-20:11:54-BST
author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
parents 9160a8005d76
children d2c90368aeef
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1 #ifndef CYGONCE_HAL_PLF_Z8530_H
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2 #define CYGONCE_HAL_PLF_Z8530_H
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3
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4 //=============================================================================
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5 //
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6 // plf_z8530.h
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7 //
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8 // Platform header for Z8530 support.
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9 //
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10 //=============================================================================
208
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11 //####ECOSGPLCOPYRIGHTBEGIN####
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12 // -------------------------------------------
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13 // This file is part of eCos, the Embedded Configurable Operating System.
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14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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15 //
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16 // eCos is free software; you can redistribute it and/or modify it under
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17 // the terms of the GNU General Public License as published by the Free
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18 // Software Foundation; either version 2 or (at your option) any later version.
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19 //
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20 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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21 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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23 // for more details.
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24 //
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25 // You should have received a copy of the GNU General Public License along
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26 // with eCos; if not, write to the Free Software Foundation, Inc.,
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27 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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28 //
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29 // As a special exception, if other files instantiate templates or use macros
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30 // or inline functions from this file, or you compile this file and link it
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31 // with other works to produce a work based on this file, this file does not
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32 // by itself cause the resulting work to be covered by the GNU General Public
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33 // License. However the source code for this file must still be made available
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34 // in accordance with section (3) of the GNU General Public License.
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35 //
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36 // This exception does not invalidate any other reasons why a work based on
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37 // this file might be covered by the GNU General Public License.
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38 //
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39 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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40 // at http://sources.redhat.com/ecos/ecos-license
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41 // -------------------------------------------
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42 //####ECOSGPLCOPYRIGHTEND####
183
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43 //=============================================================================
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44 //#####DESCRIPTIONBEGIN####
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45 //
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46 // Author(s): nickg
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47 // Contributors:nickg
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48 // Date: 1999-05-21
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49 // Purpose: Platform HAL Z8530 support.
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50 // Usage: #include <cyg/hal/plf_z8530.h>
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51 //
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52 //####DESCRIPTIONEND####
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53 //
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54 //=============================================================================
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55
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56 #include <pkgconf/hal.h>
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57
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58 /*---------------------------------------------------------------------------*/
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59 /* Zilog Z8530 access macros. */
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60
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61 #if defined(CYGPKG_HAL_MIPS_LSBFIRST)
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62 # define DUART_BASE 0xc1000000
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63 #elif defined(CYGPKG_HAL_MIPS_MSBFIRST)
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64 # define DUART_BASE 0xc1000003
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65 #else
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66 #error MIPS endianness not defined by configuration
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67 #endif
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68
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69 // Address offsets for DUART channels
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70 #define DUART_A 4
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71 #define DUART_B 0
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72
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73 /* Require Delay between Zilog chip (Z8530 and Z8536) register access */
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74
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75 //#define ZDEL 66 /* 66 Instructions for 66Mhz */
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76 #define ZDEL 200 /* 200 Instructions for 133Mhz */
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77
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78 #define DELAY_ZACC\
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79 { register int N = ZDEL; while (--N > 0); }
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80
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81
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82 #define HAL_DUART_READ_CR( _chan_, _reg_, _val_) \
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83 CYG_MACRO_START \
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84 if( (_reg_) != 0 ) \
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85 { \
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86 DELAY_ZACC; \
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87 HAL_WRITE_UINT8( DUART_BASE+(_chan_), _reg_); \
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88 } \
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89 DELAY_ZACC; \
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90 HAL_READ_UINT8( DUART_BASE+(_chan_), _val_ ); \
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91 CYG_MACRO_END
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92
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93 #define HAL_DUART_WRITE_CR( _chan_, _reg_, _val_ ) \
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94 CYG_MACRO_START \
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95 if( (_reg_) != 0 ) \
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96 { \
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97 DELAY_ZACC; \
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98 HAL_WRITE_UINT8( DUART_BASE+(_chan_), _reg_); \
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99 } \
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100 DELAY_ZACC; \
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101 HAL_WRITE_UINT8( DUART_BASE+(_chan_), _val_ ); \
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102 CYG_MACRO_END
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103
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104 #define HAL_DUART_WRITE_TR( _chan_, _val_ ) \
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105 CYG_MACRO_START \
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106 DELAY_ZACC; \
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107 HAL_WRITE_UINT8( DUART_BASE+(_chan_)+8, _val_ ); \
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108 CYG_MACRO_END
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109
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110 #define HAL_DUART_READ_RR( _chan_, _val_ ) \
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111 CYG_MACRO_START \
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112 DELAY_ZACC; \
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113 HAL_READ_UINT8( DUART_BASE+(_chan_)+8, _val_ ); \
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114 CYG_MACRO_END
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115
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116 //-----------------------------------------------------------------------------
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117 #endif // CYGONCE_HAL_PLF_Z8530_H
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118 // End of plf_z8530.h