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* Added execute permissions to files missed in conversion from CVS
author alexs
date Mon, 12 Oct 2009 02:26:09 +0100
parents d2c90368aeef
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####
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40 //=============================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): hmt
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44 // Contributors:hmt, jskov
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45 // Date: 1999-06-08
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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/infra/cyg_type.h> // base types
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56 #include <cyg/infra/cyg_trac.h> // tracing macros
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57 #include <cyg/infra/cyg_ass.h> // assertion macros
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58
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59 #include <cyg/hal/hal_io.h> // IO macros
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60 #include <cyg/hal/hal_diag.h>
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61 #include <cyg/hal/hal_intr.h> // Interrupt macros
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62
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63 #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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64 #include <cyg/hal/hal_stub.h> // hal_output_gdb_string
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65 #endif
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66
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67 #include <cyg/hal/ppc_regs.h>
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68 #include <cyg/hal/quicc/quicc_smc1.h>
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103
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70
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71 void
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72 cyg_hal_plf_comms_init(void)
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73 {
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74 static int initialized = 0;
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75
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76 if (initialized)
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77 return;
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78 initialized = 1;
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79
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80 cyg_hal_plf_serial_init();
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81 }
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82
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83
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84 #if !defined(CYGSEM_HAL_VIRTUAL_VECTOR_DIAG)
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85
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86 //-----------------------------------------------------------------------------
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87 // Select default diag channel to use
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88
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89 //#define CYG_KERNEL_DIAG_ROMART
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90 //#define CYG_KERNEL_DIAG_SERIAL
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91
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92 #if !defined(CYG_KERNEL_DIAG_SERIAL)
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93 #define CYG_KERNEL_DIAG_SERIAL
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94 #endif
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95
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96 #ifdef CYGDBG_DIAG_BUF
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97 // Keep diag messages in a buffer for later [re]display
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98
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99 int enable_diag_uart = 1;
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100 int enable_diag_buf = 1;
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101 static char diag_buf[40960*4];
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102 static int diag_buf_ptr = 0;
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103
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104 static void
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105 diag_putc(char c)
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106 {
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107 if (enable_diag_buf) {
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108 diag_buf[diag_buf_ptr++] = c;
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109 if (diag_buf_ptr == sizeof(diag_buf)) diag_buf_ptr--;
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110 }
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111 }
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112
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113 void
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114 dump_diag_buf(int start, int len)
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115 {
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116 int i;
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117 enable_diag_uart = 1;
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118 enable_diag_buf = 0;
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119 if (len == 0) len = diag_buf_ptr;
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120 diag_printf("\nDiag buf\n");
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121 for (i = start; i < len; i++) {
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122 hal_diag_write_char(diag_buf[i]);
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123 }
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124 }
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125 #endif // CYGDBG_DIAG_BUF
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126
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127
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128 //-----------------------------------------------------------------------------
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129 // MBX board specific serial output; using GDB protocol by default:
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130
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131
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132 #if defined(CYG_KERNEL_DIAG_SERIAL)
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133
103
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134 EPPC *eppc;
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135
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136 void hal_diag_init(void)
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137 {
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138 static int init = 0;
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139 if (init) return;
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140 init++;
103
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141
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142 // hardwired base
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143 eppc = eppc_base();
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144
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145 // init the actual serial port
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146 cyg_hal_plf_serial_init_channel();
151
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147 #ifdef CYGSEM_HAL_DIAG_MANGLER_GDB
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148 #ifndef CYG_HAL_STARTUP_ROM
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149 // We are talking to GDB; ack the "go" packet!
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150 cyg_hal_plf_serial_putc(eppc, '+');
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151 #endif
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152 #endif
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153 }
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154
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155 void hal_diag_write_char_serial( char c )
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156 {
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157 unsigned long __state;
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158 HAL_DISABLE_INTERRUPTS(__state);
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159 cyg_hal_plf_serial_putc(eppc, c);
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160 HAL_RESTORE_INTERRUPTS(__state);
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161 }
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162
151
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163 #if defined(CYG_HAL_STARTUP_ROM) || !defined(CYGDBG_HAL_DIAG_TO_DEBUG_CHAN)
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164 void hal_diag_write_char(char c)
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165 {
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166 #ifdef CYGDBG_DIAG_BUF
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167 diag_putc(c);
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168 if (!enable_diag_uart) return;
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169 #endif // CYGDBG_DIAG_BUF
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170 hal_diag_write_char_serial(c);
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171 }
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172
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173 #else // RAM start so encode for GDB
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174
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175 void hal_diag_write_char(char c)
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176 {
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177 static char line[100];
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178 static int pos = 0;
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179
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180 #ifdef CYGDBG_DIAG_BUF
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181 diag_putc(c);
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182 if (!enable_diag_uart) return;
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183 #endif // CYGDBG_DIAG_BUF
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184
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185 // No need to send CRs
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186 if( c == '\r' ) return;
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187
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188 line[pos++] = c;
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189
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190 if( c == '\n' || pos == sizeof(line) )
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191 {
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192 CYG_INTERRUPT_STATE old;
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193
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194 // Disable interrupts. This prevents GDB trying to interrupt us
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195 // while we are in the middle of sending a packet. The serial
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196 // receive interrupt will be seen when we re-enable interrupts
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197 // later.
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198
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199 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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200 CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION(old);
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201 #else
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202 HAL_DISABLE_INTERRUPTS(old);
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203 #endif
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204
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205 while(1)
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206 {
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207 static char hex[] = "0123456789ABCDEF";
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208 cyg_uint8 csum = 0;
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209 int i;
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210
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211 hal_diag_write_char_serial('$');
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212 hal_diag_write_char_serial('O');
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213 csum += 'O';
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214 for( i = 0; i < pos; i++ )
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215 {
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216 char ch = line[i];
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217 char h = hex[(ch>>4)&0xF];
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218 char l = hex[ch&0xF];
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219 hal_diag_write_char_serial(h);
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220 hal_diag_write_char_serial(l);
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221 csum += h;
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222 csum += l;
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223 }
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224 hal_diag_write_char_serial('#');
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225 hal_diag_write_char_serial(hex[(csum>>4)&0xF]);
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226 hal_diag_write_char_serial(hex[csum&0xF]);
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227
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228 #ifndef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
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229 // only gobble characters if no interrupt handler to grab ^Cs
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230 // is installed (which is exclusive with device driver use)
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231
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232 // Wait for the ACK character '+' from GDB here and handle
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233 // receiving a ^C instead. This is the reason for this clause
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234 // being a loop.
103
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235 c = cyg_hal_plf_serial_getc(eppc);
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236
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237 if( c == '+' )
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238 break; // a good acknowledge
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239 #if 0
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240 if( c1 == 3 ) {
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241 // Ctrl-C: breakpoint.
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242 breakpoint();
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243 break;
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244 }
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245 #endif
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246 // otherwise, loop round again
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247 #else
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248 break;
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249 #endif
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250 }
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251
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252 pos = 0;
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253
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254 // And re-enable interrupts
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255 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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256 CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION(old);
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257 #else
32
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258 HAL_RESTORE_INTERRUPTS(old);
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259 #endif
32
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260
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261 }
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262 }
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263 #endif // NOT def CYG_HAL_STARTUP_ROM
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264
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265
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266 void hal_diag_read_char(char *c)
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267 {
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268 *c = cyg_hal_plf_serial_getc(eppc);
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269 }
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270
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271 #endif // CYG_KERNEL_DIAG_SERIAL
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272
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273 #endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
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274
32
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275 // EOF hal_diag.c