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annotate packages/hal/arm/aeb/current/misc/Notes @ 2:443894e2e912 ecos-v1_2_1-release

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Block commit of eCos version 1.2.1
author jlarmour
date Tue, 11 May 1999 12:24:34 +0000
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children 18ee5a9c102e
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1 ===========================================================================
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2 ####COPYRIGHTBEGIN####
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3
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4 -------------------------------------------
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5 The contents of this file are subject to the Cygnus eCos Public License
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6 Version 1.0 (the "License"); you may not use this file except in
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7 compliance with the License. You may obtain a copy of the License at
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8 http://sourceware.cygnus.com/ecos
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9
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10 Software distributed under the License is distributed on an "AS IS"
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11 basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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12 License for the specific language governing rights and limitations under
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13 the License.
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14
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15 The Original Code is eCos - Embedded Cygnus Operating System, released
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16 September 30, 1998.
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17
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18 The Initial Developer of the Original Code is Cygnus. Portions created
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19 by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved.
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20 -------------------------------------------
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21
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22 ####COPYRIGHTEND####
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23 ===========================================================================
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24
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25 1999-01-05, revised 1999-03-11
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26
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27 How to build and install the GDB module on the AEB-1
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28 ====================================================
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29
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30 Overview
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31 --------
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32
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33 The ARM AEB-1 comes with tools in ROM. These include a simple FLASH
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34 management tool and the Angel (R) monitor. eCos for the ARM AEB-1
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35 comes with GDB stubs suitable for programming into the onboard FLASH.
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36 GDB is the preferred debug environment for eCos, but Angel must be
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37 used to initially install the GDB stubs.
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38
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39 Once this bootstrapping is done, you can use GDB to load and debug
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40 programs on the AEB-1 board.
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41
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42 The following steps will have you:
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43
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44 * talk to the AEB-1 board with a terminal emulator (or a real
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45 terminal!)
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46
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47 * enable ARM's Angel ROM monitor
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48
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49 * use GDB with Angel to download a configuration of eCos with GDB
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50 stubs which will act as a ROM monitor
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51
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52 * talk to the AEB-1 with a terminal emulator again, and tell it to
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53 write the new module to flash
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54
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55 * tell the board to use this new monitor, and then hook GDB up to it
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56 for real debugging
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57
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58 Talking to the board
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59 --------------------
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60
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61 Connect a terminal or computer's serial port to the ARM AEB-1. On a
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62 PC with a 9-pin serial port, you can use the cable shipped by ARM with
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63 no modification.
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64
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65 Set the terminal or terminal emulator to 9600N1 (9600 baud, no parity,
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66 1 stop bit).
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67
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68 Reset the board by pressing the little reset button on the top. You
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69 will see the following text:
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70
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71 ARM Evaluation Board Boot Monitor 0.01 (19 APR 1998)
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72 Press ENTER within 2 seconds to stop autoboot
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73
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74 Press ENTER quickly, and you will get the boot prompt:
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75
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76 Boot:
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77
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78
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79 Downloading the GDB stubs
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80 -------------------------
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81
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82 Run the angel monitor by typing the following at the Boot: prompt:
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83
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84 Boot: plugin angel
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85 Boot: angel
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86
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87 Then exit the terminal emulator and start up gdb with the GDB module:
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88
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89 $ arm-elf-gdb -nw loaders/arm-aeb/gdb_module.img
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90 (gdb) set remotebaud 9600
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91 (gdb) target rdi s=<YOUR SERIAL PORT>
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92
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93 On Windows, the serial port could be com1, com2, etc. On a UNIX or
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94 Linux system, the serial port would be /dev/cua0 or /dev/cua1.
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95 Examples are:
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96
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97 (gdb) target rdi s=com1
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98 (gdb) target rdi s=/dev/cua0
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99
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100 Finally, load the GDB stubs image:
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101
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102 (gdb) load
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103 Loading section .rom_vectors, size 0x44 lma 0xc000
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104 Loading section .text, size 0x3544 lma 0xc044
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105 Loading section .rodata, size 0x164 lma 0xf588
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106 Loading section .data, size 0x110 lma 0xf6ec
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107 Start address 0xc044 , load size 14332
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108 Transfer rate: 12739 bits/sec.
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109
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110 (Note that the sizes may not exactly match the ones you see on your
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111 system.)
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112
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113 Once the loading is done, quit GDB:
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114
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115 (gdb) quit
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116
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117
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118 Activating the GDB stubs
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119 ------------------------
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120
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121 Connect a terminal emulator to the board again, reset the board, and
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122 type enter within two seconds to get the Boot: prompt. This is the
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123 same thing you did at the beginning of this procedure.
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124
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125 Commit the GDB stubs module to flash:
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126
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127 Boot: flashwrite 4018000 C000 8000
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128
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129 Verify that the eCos/"GDB stubs" module is now added in the list of
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130 modules in the board:
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131
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132 Boot: rommodules
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133
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134 You should see the following output:
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135
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136 Header Base Limit
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137 04000004 04000000 040034a8 BootStrap 1.00 (14 Aug 1998)
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138 04003a74 04003800 04003bc0 Production Test 1.00 (13 Aug 1998)
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139 0400e4f4 04004000 0400e60f Angel 1.02 (12 MAY 1998)
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140 0401ac00 04018000 0401aed8 eCos 1.2 (26 Feb 1999) GDB stubs
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141
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142 Now make the eCos/"GDB stubs" module be the default monitor:
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143
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144 Boot: plugin eCos
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145
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146
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147 Running and debugging an application
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148 ------------------------------------
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149
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150 Configure eCos from scratch for the ARM AEB-1 platform, and build your
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151 application. Remember that the AEB-1 board only has 128K of RAM.
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152
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153 Exit from the terminal emulator (you will not need it anymore for
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154 normal operations), and run gdb:
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155
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156 $ arm-elf-gdb -nw executable
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157 (gdb) set remotebaud 38400
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158 (gdb) target remote <YOUR SERIAL PORT>
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159 (gdb) load
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160
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161 You can now run your program in the usual way under GDB'S control
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162
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163 Notice that the GDB stub runs at 38400 baud.
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164
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165
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166 Building the GDB stubs
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167 ----------------------
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168
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169 We provide the GDB stubs image in the directory
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170 loaders/arm-aeb/gdb_module.img, but here are instructions on how to
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171 rebuild them if you should ever need to.
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172
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173 1. Configure a minimal eCos system with all packages except 'infra'
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174 disabled. If you are doing manual configuration, you can do so
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175 with
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176
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177 tcl /work2/ecc/ecc/pkgconf.tcl \
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178 --target=arm --platform=aeb --startup=stubs \
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179 --disable CYGPKG_KERNEL --disable CYGPKG_UITRON \
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180 --disable CYGPKG_LIBC --disable CYGPKG_LIBM \
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181 --disable CYGPKG_ERROR --disable CYGPKG_IO \
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182 --disable CYGPKG_IO_SERIAL --disable CYGPKG_DEVICES_WALLCLOCK \
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183 --disable CYGPKG_DEVICES_WATCHDOG
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184
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185 and if you are using the Configuration Tool GUI, you can select the
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186 ARM AEB platform, with GDB stubs startup, and enable the HAL and
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187 INFRA packages and disable all other packages.
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188
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189 2. Edit <hal/hal.h> to enable GDB:
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190 #define CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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191 #undef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
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192 #undef CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT
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193
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194 you can use the following patch:
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195
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196 --- pkgconf/hal.h~ Wed Mar 10 13:08:58 1999
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197 +++ pkgconf/hal.h Thu Mar 11 15:53:16 1999
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198 @@ -356,9 +356,9 @@
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199
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200 }}CFG_DATA */
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201
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202 -#undef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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203 +#define CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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204 #undef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
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205 -#define CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT
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206 +#undef CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT
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207
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208 /*
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209 * NOTE:
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210
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211
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212 3. make misc
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213
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214 The gdb_module.img file will be built in the directory
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215 hal/arm/aeb/current/misc
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216
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217
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218 Alternate way of loading the initial stubs
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219 ------------------------------------------
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220
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221 Using the AEB-1 module tool, install the GDB stubs from the provided
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222 ".UU" file.
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223
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224 >>> This is an annotated 'terminal' session with the AEB-1 monitor:
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225
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226 ARM Evaluation Board Boot Monitor 0.01 (19 APR 1998)
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227 Press ENTER within 2 seconds to stop autoboot
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228 Boot: help
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229 Module is BootStrap 1.00 (14 Aug 1998)
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230
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231 Help is available on:
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232 Help Modules ROMModules UnPlug PlugIn
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233 Kill SetEnv UnSetEnv PrintEnv DownLoad
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234 Go GoS Boot PC FlashWrite
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235 FlashLoad FlashErase
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236
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237 Boot: download c000
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238 Ready to download. Use 'transmit' option on terminal emulator to download file.
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239
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240 ... at this point, I told my terminal emulator (minicom) to download the ASCII file
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241 gdb_module.img.UU (probably needs a different name on Win/NT)
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242 I had to enter ^D when the download was complete to get the monitor to come back.
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243
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244 Loaded file gdb_module.img.raw at address 0000c000, size = 13905
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245
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246 Boot: flashwrite 4018000 c000 4000
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247
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248 As above, this command actually programs the FLASH.
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249
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250 Boot: rommodules
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251 Header Base Limit
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252 04000004 04000000 040034a8 BootStrap 1.00 (14 Aug 1998)
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253 04003a74 04003800 04003bc0 Production Test 1.00 (13 Aug 1998)
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254 0400e4f4 04004000 0400e60f Angel 1.02 (12 MAY 1998)
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255 0401b608 04018000 0401b844 eCos 1.2 (26 Feb 1999) GDB stubs
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256
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257 This verifies that the eCos GDB stubs are available in FLASH.
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258
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259 Boot: plugin ecos
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260
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261 This makes the eCos GDB stubs the default "monitor." When reset the
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262 AEB-1 will start the GDB stubs, after the initial 2 second escape
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263 period.