Mercurial > flash_v2

annotate packages/hal/sh/edk7708/current/src/hal_diag.c @ 210:d2c90368aeef

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Merge from eCos master repository on 2002-05-23-21:39:14-BST
author jlarmour
date Thu, 23 May 2002 22:59:51 +0000
parents e0c0827131d1
children
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1 //=============================================================================
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2 //
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3 // hal_diag.c
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4 //
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5 // HAL diagnostic output code
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6 //
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7 //=============================================================================
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later version.
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16 //
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 // for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License along
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23 // with eCos; if not, write to the Free Software Foundation, Inc.,
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 //
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26 // As a special exception, if other files instantiate templates or use macros
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27 // or inline functions from this file, or you compile this file and link it
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28 // with other works to produce a work based on this file, this file does not
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29 // by itself cause the resulting work to be covered by the GNU General Public
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30 // License. However the source code for this file must still be made available
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31 // in accordance with section (3) of the GNU General Public License.
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32 //
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33 // This exception does not invalidate any other reasons why a work based on
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34 // this file might be covered by the GNU General Public License.
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35 //
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 // at http://sources.redhat.com/ecos/ecos-license/
208
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
134
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40 //=============================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): nickg, jskov
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44 // Contributors: nickg, jskov
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45 // Date: 1999-03-23
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46 // Purpose: HAL diagnostic output
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47 // Description: Implementations of HAL diagnostic output support.
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48 //
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49 //####DESCRIPTIONEND####
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50 //
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51 //=============================================================================
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52
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53 #include <pkgconf/hal.h>
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54
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55 #include <cyg/hal/hal_diag.h> // our header.
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56
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57 #include <cyg/infra/cyg_type.h> // base types, externC
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58 #include <cyg/hal/hal_io.h> // IO macros
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59 #include <cyg/hal/hal_if.h> // Calling interface
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60 #include <cyg/hal/hal_intr.h> // Interrupt macros
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61 #include <cyg/hal/sh3_sci.h> // driver API
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62 #include <cyg/hal/hal_misc.h> // Helper functions
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63
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64 #define SCI_BASE ((cyg_uint8*)0xfffffe80)
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65
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66 //-----------------------------------------------------------------------------
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67
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68
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69 void
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70 cyg_hal_plf_comms_init(void)
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71 {
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72 static int initialized = 0;
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73
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74 if (initialized)
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75 return;
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76
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77 initialized = 1;
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78
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79 cyg_hal_plf_sci_init(0, 0, CYGNUM_HAL_INTERRUPT_SCI_RXI, SCI_BASE);
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80 }
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81
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82 //=============================================================================
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83 // Led control
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84 //=============================================================================
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85 #define LED_ON 0x04000000
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86 #define LED_OFF 0x18000000
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87
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88 void
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89 hal_diag_led_on( void )
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90 {
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91 HAL_WRITE_UINT8(LED_ON, 0);
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92 }
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93
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94 void
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95 hal_diag_led_off( void )
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96 {
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97 HAL_WRITE_UINT8(LED_OFF, 0);
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98 }
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99
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100
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101 //=============================================================================
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102 // Compatibility with older stubs
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103 //=============================================================================
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104
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105 #ifndef CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
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106
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107 #define CYGPRI_HAL_SH_SH3_SCI_PRIVATE
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108 #include <cyg/hal/sh3_sci.h> // driver API
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109
134
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110 static channel_data_t channel = { (cyg_uint8*)SCI_BASE, 0, 0};
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111
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112 #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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113 #include <cyg/hal/hal_stub.h> // hal_output_gdb_string
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114 #endif
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115
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116 #if defined(CYGSEM_HAL_USE_ROM_MONITOR_GDB_stubs)
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117
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118 #define CYG_HAL_DIAG_GDB
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119
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120 #elif defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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121
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122 #define CYG_HAL_DIAG_GDB
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123
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124 #endif
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125
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126 //-----------------------------------------------------------------------------
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127
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128 void hal_diag_init(void)
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129 {
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130 cyg_hal_plf_sci_init_channel(&channel);
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131 }
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132
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133 void
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134 hal_diag_write_char_serial( char c )
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135 {
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136 cyg_hal_plf_sci_putc(&channel, c);
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137 }
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138
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139 void
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140 hal_diag_read_char(char *c)
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141 {
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142 *c = (char) cyg_hal_plf_sci_getc(&channel);
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143 }
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144
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145 // Packet function
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146 void
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147 hal_diag_write_char(char c)
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148 {
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149 #ifdef CYG_HAL_DIAG_GDB
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150 static char line[100];
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151 static int pos = 0;
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152
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153 // No need to send CRs
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154 if( c == '\r' ) return;
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155
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156 line[pos++] = c;
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157
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158 if( c == '\n' || pos == sizeof(line) )
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159 {
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160 CYG_INTERRUPT_STATE old;
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161
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162 // Disable interrupts. This prevents GDB trying to interrupt us
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163 // while we are in the middle of sending a packet. The serial
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164 // receive interrupt will be seen when we re-enable interrupts
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165 // later.
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166
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167 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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168 CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION(old);
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169 #else
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170 HAL_DISABLE_INTERRUPTS(old);
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171 #endif
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172
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173 while(1)
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174 {
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175 char c1;
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176 static char hex[] = "0123456789ABCDEF";
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177 cyg_uint8 csum = 0;
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178 int i;
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179
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180 cyg_hal_plf_sci_putc(&channel, '$');
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181 cyg_hal_plf_sci_putc(&channel, 'O');
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182 csum += 'O';
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183 for( i = 0; i < pos; i++ )
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184 {
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185 char ch = line[i];
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186 char h = hex[(ch>>4)&0xF];
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187 char l = hex[ch&0xF];
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188 cyg_hal_plf_sci_putc(&channel, h);
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189 cyg_hal_plf_sci_putc(&channel, l);
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190 csum += h;
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191 csum += l;
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192 }
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193 cyg_hal_plf_sci_putc(&channel, '#');
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194 cyg_hal_plf_sci_putc(&channel, hex[(csum>>4)&0xF]);
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195 cyg_hal_plf_sci_putc(&channel, hex[csum&0xF]);
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196
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197 // Wait for the ACK character '+' from GDB here and handle
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198 // receiving a ^C instead.
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199 c1 = (char) cyg_hal_plf_sci_getc(&channel);
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200
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201 if( c1 == '+' )
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202 break; // a good acknowledge
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203
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204 // Check for user break.
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205 if( cyg_hal_is_break( &c1, 1 ) )
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206 cyg_hal_user_break( NULL );
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207
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208 // otherwise, loop round again
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209 }
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210
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211 pos = 0;
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212
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213 // And re-enable interrupts
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214 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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215 CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION(old);
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216 #else
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217 HAL_RESTORE_INTERRUPTS(old);
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218 #endif
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219 }
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220 #else // CYG_HAL_DIAG_GDB
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221 cyg_hal_plf_sci_putc(&channel, c);
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222 #endif
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223 }
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224 #endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
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225
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226 //-----------------------------------------------------------------------------
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227 // End of hal_diag.c