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annotate packages/hal/mips/ref4955/current/src/hal_diag.c @ 3292:7f8e529b4d82 default tip

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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 Free Software Foundation, 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
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16 // version.
208
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use
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28 // macros or inline functions from this file, or you compile this file
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29 // and link it with other works to produce a work based on this file,
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30 // this file does not by itself cause the resulting work to be covered by
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31 // the GNU General Public License. However the source code for this file
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32 // must still be made available in accordance with section (3) of the GNU
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33 // General Public License v2.
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34 //
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35 // This exception does not invalidate any other reasons why a work based
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //=============================================================================
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s): jskov
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43 // Contributors:nickg, jskov
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44 // Date: 2000-05-10
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45 // Purpose: HAL diagnostic output
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46 // Description: Implementations of HAL diagnostic output support.
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47 //
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48 //####DESCRIPTIONEND####
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49 //
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50 //=============================================================================
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51
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52 #include <pkgconf/hal.h>
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53
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54 #if !defined(CYGSEM_HAL_VIRTUAL_VECTOR_DIAG)
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55
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56 #include <cyg/infra/cyg_type.h> // base types
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57 #include <cyg/infra/cyg_trac.h> // tracing macros
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58 #include <cyg/infra/cyg_ass.h> // assertion macros
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59
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60 #include <cyg/hal/hal_arch.h>
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61 #include <cyg/hal/hal_diag.h>
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62
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63 #include <cyg/hal/hal_intr.h>
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64 #include <cyg/hal/hal_misc.h> // Helper functions
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65
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66 #include <cyg/hal/hal_io.h>
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67
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68 #include <cyg/hal/hal_if.h> // ROM calling interface
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69
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70 #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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71 #include <cyg/hal/hal_stub.h> // CYG_HAL_GDB_x_CRITICAL_IO_REGION
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72 #endif
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73
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74 externC void cyg_hal_plf_serial_init_channel(void* __ch_data);
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75 externC void cyg_hal_plf_serial_putc(void* __ch_data, cyg_uint8 __ch);
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76 externC cyg_uint8 cyg_hal_plf_serial_getc(void* __ch_data);
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77
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78 //-----------------------------------------------------------------------------
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79 // Hit the hardware directly. Either wrap in GDB O-packets, or write
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80 // data raw to device.
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81
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82 // Decide when to wrap text output as GDB O-packets
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83 #if (CYGNUM_HAL_VIRTUAL_VECTOR_DEBUG_CHANNEL \
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84 == CYGNUM_HAL_VIRTUAL_VECTOR_CONSOLE_CHANNEL)
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85
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86 #if defined(CYGSEM_HAL_USE_ROM_MONITOR_GDB_stubs) \
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87 || defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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88
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89 #define CYG_DIAG_GDB
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90
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91 #endif
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92
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93 #endif
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94
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95 //-----------------------------------------------------------------------------
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96 // There are two serial ports. Hardwire to use one of them.
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97 #define CYG_DEVICE_SERIAL_SCC1 0xb40003f8 // port 1
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98 #define CYG_DEVICE_SERIAL_SCC2 0xb40002f8 // port 2
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99
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100 typedef struct {
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101 cyg_uint8* base;
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102 cyg_int32 msec_timeout;
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103 int isr_vector;
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104 } channel_data_t;
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105
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106 #if (CYGNUM_HAL_VIRTUAL_VECTOR_CONSOLE_CHANNEL == 0)
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107 #define BASE ((cyg_uint8*)CYG_DEVICE_SERIAL_SCC1)
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108 #else
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109 #define BASE ((cyg_uint8*)CYG_DEVICE_SERIAL_SCC2)
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110 #endif
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111
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112 static channel_data_t channel = { BASE, 0, 0};
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113
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114 #ifdef CYG_DIAG_GDB
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115
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116 void
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117 hal_diag_write_char(char c)
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118 {
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119 static char line[100];
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120 static int pos = 0;
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121
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122 // No need to send CRs
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123 if( c == '\r' ) return;
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124
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125 line[pos++] = c;
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126
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127 if( c == '\n' || pos == sizeof(line) )
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128 {
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129 CYG_INTERRUPT_STATE old;
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130
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131 // Disable interrupts. This prevents GDB trying to interrupt us
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132 // while we are in the middle of sending a packet. The serial
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133 // receive interrupt will be seen when we re-enable interrupts
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134 // later.
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135 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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136 CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION(old);
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137 #else
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138 HAL_DISABLE_INTERRUPTS(old);
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139 #endif
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140
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141 while(1)
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142 {
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143 static char hex[] = "0123456789ABCDEF";
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144 cyg_uint8 csum = 0;
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145 int i;
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146 char c1;
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147
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148 cyg_hal_plf_serial_putc(&channel, '$');
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149 cyg_hal_plf_serial_putc(&channel, 'O');
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150 csum += 'O';
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151 for( i = 0; i < pos; i++ )
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152 {
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153 char ch = line[i];
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154 char h = hex[(ch>>4)&0xF];
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155 char l = hex[ch&0xF];
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156 cyg_hal_plf_serial_putc(&channel, h);
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157 cyg_hal_plf_serial_putc(&channel, l);
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158 csum += h;
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159 csum += l;
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160 }
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161 cyg_hal_plf_serial_putc(&channel, '#');
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162 cyg_hal_plf_serial_putc(&channel, hex[(csum>>4)&0xF]);
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163 cyg_hal_plf_serial_putc(&channel, hex[csum&0xF]);
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164
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165 c1 = cyg_hal_plf_serial_getc(&channel);
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166
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167 if( c1 == '+' ) break;
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168 }
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169
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170 pos = 0;
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171 // And re-enable interrupts
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172 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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173 CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION(old);
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174 #else
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175 HAL_RESTORE_INTERRUPTS(old);
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176 #endif
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177 }
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178 }
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179
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180 void
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181 hal_diag_read_char(char *c)
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182 {
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183 *c = cyg_hal_plf_serial_getc(&channel);
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184 }
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185
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186 #else // CYG_DIAG_GDB
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187
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188 // Hit the hardware directly, no GDB translation
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189
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190 void
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191 hal_diag_read_char(char *c)
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192 {
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193 *c = cyg_hal_plf_serial_getc(&channel);
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194 }
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195
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196 void
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197 hal_diag_write_char(char c)
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198 {
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199 cyg_hal_plf_serial_putc(&channel, c);
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200 }
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201
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202
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203 #endif
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204
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205 // Reagardless whether encoding or not we alway initialize the device.
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206
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207 void
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208 hal_diag_init(void)
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209 {
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210 // Init serial device
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211 cyg_hal_plf_serial_init_channel((void*)&channel);
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212 }
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213
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214 #endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
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215
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216 //-----------------------------------------------------------------------------
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217 // End of hal_diag.c