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annotate packages/hal/mips/jmr3904/current/include/platform.inc @ 64:c38311975d4f ecos-sw-2000-01-28

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Merge from eCos master repository on 2000-01-28-04:28:11-GMT
author jlarmour
date Fri, 28 Jan 2000 04:59:39 +0000
parents 7a6ac9edc838
children bf00f99aec69
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1 #ifndef CYGONCE_HAL_PLATFORM_INC
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2 #define CYGONCE_HAL_PLATFORM_INC
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3 ##=============================================================================
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4 ##
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5 ## platform.inc
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6 ##
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7 ## JMR-TX3904 board assembler header file
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8 ##
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9 ##=============================================================================
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10 #####COPYRIGHTBEGIN####
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11 #
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12 # -------------------------------------------
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13 # The contents of this file are subject to the Red Hat eCos Public License
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14 # Version 1.0 (the "License"); you may not use this file except in
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15 # compliance with the License. You may obtain a copy of the License at
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16 # http://sourceware.cygnus.com/ecos
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17 #
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18 # Software distributed under the License is distributed on an
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19 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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20 # License for the specific language governing rights and limitations under
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21 # the License.
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22 #
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23 # The Original Code is eCos - Embedded Configurable Operating System,
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24 # released September 30, 1998.
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25 #
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26 # The Initial Developer of the Original Code is Red Hat.
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27 # Portions created by Red Hat are
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28 # Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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29 # All Rights Reserved.
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30 # -------------------------------------------
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31 #
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32 #####COPYRIGHTEND####
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33 ##=============================================================================
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34 #######DESCRIPTIONBEGIN####
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35 ##
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36 ## Author(s): nickg
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37 ## Contributors: nickg
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38 ## Date: 1999-04-06
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39 ## Purpose: JMR-TX3904 board definitions.
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40 ## Description: This file contains various definitions and macros that are
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41 ## useful for writing assembly code for the JMR-TX3904 board.
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42 ## Usage:
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43 ## #include <cyg/hal/platform.inc>
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44 ## ...
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45 ##
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46 ##
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47 ######DESCRIPTIONEND####
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48 ##
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49 ##=============================================================================
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50
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51 #include <cyg/hal/mips.inc>
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52
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53 #------------------------------------------------------------------------------
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54 # Monitor initialization.
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55
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56 #ifndef CYGPKG_HAL_MIPS_MON_DEFINED
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57
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58 #if defined(CYG_HAL_STARTUP_ROM) || \
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59 ( defined(CYG_HAL_STARTUP_RAM) && \
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60 !defined(CYGSEM_HAL_USE_ROM_MONITOR))
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61
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62 # If we are starting up from ROM, or we are starting in
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63 # RAM and NOT using a ROM monitor, initialize the VSR table.
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64
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65 .macro hal_mon_init
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66 la a0,__default_interrupt_vsr
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67 la a1,__default_exception_vsr
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68 la a3,hal_vsr_table
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69 sw a0,0(a3)
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70 sw a1,1*4(a3)
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71 sw a1,2*4(a3)
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72 sw a1,3*4(a3)
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73 sw a1,4*4(a3)
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74 sw a1,5*4(a3)
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75 sw a1,6*4(a3)
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76 sw a1,7*4(a3)
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77 sw a1,8*4(a3)
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78 sw a1,9*4(a3)
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79 sw a1,10*4(a3)
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80 sw a1,11*4(a3)
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81 sw a1,12*4(a3)
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82 sw a1,13*4(a3)
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83 sw a1,14*4(a3)
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84 sw a1,15*4(a3)
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85
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86 sw a1,32*4(a3)
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87 sw a1,33*4(a3)
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88 .endm
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89
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90 #elif defined(CYG_HAL_STARTUP_RAM) && defined(CYGSEM_HAL_USE_ROM_MONITOR)
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91
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92 # Initialize the VSR table entries
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93 # We only take control of the interrupt vector,
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94 # the rest are left to the ROM for now...
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95
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96 .macro hal_mon_init
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97 la a0,__default_interrupt_vsr
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98 la a3,hal_vsr_table
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99 sw a0,0(a3)
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100 .endm
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101
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102 #else
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103
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104 .macro hal_mon_init
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105 .endm
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106
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107 #endif
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108
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109
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110 #define CYGPKG_HAL_MIPS_MON_DEFINED
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111
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112 #endif
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113
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114 #------------------------------------------------------------------------------
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115 # Decide whether the VSR table is defined externally, or is to be defined
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116 # here.
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117
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118 #if defined(CYG_HAL_MIPS_SIM) || \
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119 ( defined(CYG_HAL_MIPS_TX3904) && \
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120 defined(CYG_HAL_STARTUP_RAM) && \
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121 !defined(CYGSEM_HAL_USE_ROM_MONITOR) \
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122 )
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123
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124 ## VSR table defined in linker script
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125
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126 #else
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127
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128 #define CYG_HAL_MIPS_VSR_TABLE_DEFINED
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129
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130 #endif
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131
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132 #------------------------------------------------------------------------------
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133 #endif // ifndef CYGONCE_HAL_PLATFORM_INC
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134 # end of platform.inc