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annotate packages/hal/arm/aeb/current/src/Notes_GDB_stub @ 2729:74dbf4c3f2e1 after-copyright-change-20090129

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Update all copyright banners to reflect FSF ownership; fix and improve licence text.
author jlarmour
date Thu, 29 Jan 2009 17:47:46 +0000
parents d2c90368aeef
children
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1 ===========================================================================
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2 ## ####ECOSGPLCOPYRIGHTBEGIN####
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3 ## -------------------------------------------
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4 ## This file is part of eCos, the Embedded Configurable Operating System.
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5 ## Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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6 ##
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7 ## eCos is free software; you can redistribute it and/or modify it under
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8 ## the terms of the GNU General Public License as published by the Free
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9 ## Software Foundation; either version 2 or (at your option) any later
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10 ## version.
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11 ##
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12 ## eCos is distributed in the hope that it will be useful, but WITHOUT
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13 ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 ## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 ## for more details.
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16 ##
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17 ## You should have received a copy of the GNU General Public License
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18 ## along with eCos; if not, write to the Free Software Foundation, Inc.,
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19 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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20 ##
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21 ## As a special exception, if other files instantiate templates or use
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22 ## macros or inline functions from this file, or you compile this file
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23 ## and link it with other works to produce a work based on this file,
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24 ## this file does not by itself cause the resulting work to be covered by
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25 ## the GNU General Public License. However the source code for this file
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26 ## must still be made available in accordance with section (3) of the GNU
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27 ## General Public License v2.
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28 ##
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29 ## This exception does not invalidate any other reasons why a work based
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30 ## on this file might be covered by the GNU General Public License.
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31 ## -------------------------------------------
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32 ## ####ECOSGPLCOPYRIGHTEND####
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33 ===========================================================================
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35 1999-01-05, revised 1999-03-11, revised 2000.01.26
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37 How to build and install the GDB module on the AEB-1
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38 ====================================================
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39
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40 Overview
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41 --------
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42
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43 The ARM AEB-1 comes with tools in ROM. These include a simple FLASH
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44 management tool and the Angel (R) monitor. eCos for the ARM AEB-1
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45 comes with GDB stubs suitable for programming into the onboard FLASH.
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46 GDB is the preferred debug environment for eCos, but Angel must be
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47 used to initially install the GDB stubs.
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49 Once this bootstrapping is done, you can use GDB to load and debug
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50 programs on the AEB-1 board.
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51
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52 The following steps will have you:
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53
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54 * talk to the AEB-1 board with a terminal emulator (or a real
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55 terminal!)
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56
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57 * enable ARM's Angel ROM monitor
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58
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59 * use GDB with Angel or the Angel ROM monitor to download a
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60 configuration of eCos with GDB stubs which will act as a ROM monitor
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61
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62 * talk to the AEB-1 with a terminal emulator again, and tell it to
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63 write the new module to flash
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64
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65 * tell the board to use this new monitor, and then hook GDB up to it
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66 for real debugging
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67
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68 Talking to the board
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69 --------------------
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71 Connect a terminal or computer's serial port to the ARM AEB-1. On a
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72 PC with a 9-pin serial port, you can use the cable shipped by ARM with
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73 no modification.
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75 Set the terminal or terminal emulator to 9600N1 (9600 baud, no parity,
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76 1 stop bit).
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78 Reset the board by pressing the little reset button on the top. You
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79 will see the following text:
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80
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81 ARM Evaluation Board Boot Monitor 0.01 (19 APR 1998)
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82 Press ENTER within 2 seconds to stop autoboot
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83
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84 Press ENTER quickly, and you will get the boot prompt:
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85
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86 Boot:
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89 Downloading the GDB stubs
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90 -------------------------
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91
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92 Run the angel monitor by typing the following at the Boot: prompt:
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93
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94 Boot: plugin angel
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95 Boot: angel
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96
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97 Then exit the terminal emulator and start up gdb with the GDB module:
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98
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99 $ arm-elf-gdb -nw loaders/arm-aeb/gdb_module.img
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100 (gdb) set remotebaud 9600
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101 (gdb) target rdi s=<YOUR SERIAL PORT>
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102
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103 On Windows, the serial port could be com1, com2, etc. On a UNIX or
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104 Linux system, the serial port would be /dev/cua0 or /dev/cua1.
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105 Examples are:
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106
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107 (gdb) target rdi s=com1
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108 (gdb) target rdi s=/dev/cua0
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109
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110 Finally, load the GDB stubs image:
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111
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112 (gdb) load
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113 Loading section .rom_vectors, size 0x44 lma 0xc000
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114 Loading section .text, size 0x3544 lma 0xc044
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115 Loading section .rodata, size 0x164 lma 0xf588
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116 Loading section .data, size 0x110 lma 0xf6ec
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117 Start address 0xc044 , load size 14332
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118 Transfer rate: 12739 bits/sec.
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119
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120 (Note that the sizes may not exactly match the ones you see on your
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121 system.)
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122
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123 Once the loading is done, quit GDB:
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124
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125 (gdb) quit
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127
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128 Activating the GDB stubs
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129 ------------------------
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130
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131 Connect a terminal emulator to the board again, reset the board, and
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132 type enter within two seconds to get the Boot: prompt. This is the
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133 same thing you did at the beginning of this procedure.
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134
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135 Commit the GDB stubs module to flash:
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136
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137 Boot: flashwrite 4018000 C000 8000
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138
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139 Verify that the eCos/"GDB stubs" module is now added in the list of
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140 modules in the board:
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141
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142 Boot: rommodules
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143
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144 You should see the following output:
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145
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146 Header Base Limit
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147 04000004 04000000 040034a8 BootStrap 1.00 (14 Aug 1998)
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148 04003a74 04003800 04003bc0 Production Test 1.00 (13 Aug 1998)
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149 0400e4f4 04004000 0400e60f Angel 1.02 (12 MAY 1998)
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150 0401ac00 04018000 0401aed8 eCos 1.2 (26 Feb 1999) GDB stubs
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151
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152 Now make the eCos/"GDB stubs" module be the default monitor:
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153
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154 Boot: plugin eCos
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155
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156
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157 Running and debugging an application
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158 ------------------------------------
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159
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160 Configure eCos from scratch for the ARM AEB-1 platform, and build your
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161 application. Remember that the AEB-1 board only has 128K of RAM.
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162
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163 Exit from the terminal emulator (you will not need it anymore for
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164 normal operations), and run gdb:
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165
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166 $ arm-elf-gdb -nw executable
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167 (gdb) set remotebaud 38400
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168 (gdb) target remote <YOUR SERIAL PORT>
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169 (gdb) load
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170
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171 You can now run your program in the usual way under GDB'S control
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172
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173 Notice that the GDB stub runs at 38400 baud.
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174
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175
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176 Building the GDB stubs
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177 ----------------------
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178
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179 We provide the GDB stubs image in the directory
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180 loaders/arm-aeb/gdb_module.img, but here are instructions on how to
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181 rebuild them if you should ever need to.
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182
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183 % ecosconfig new aeb stubs
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184 % ecosconfig tree
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185 % make
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186
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187 The newlt built files are installed in ./bin/install.
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188
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189
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190 Alternate way of loading the initial stubs
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191 ------------------------------------------
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192
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193 Using the AEB-1 module tool, install the GDB stubs from the provided
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194 ".UU" file.
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195
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196 >>> This is an annotated 'terminal' session with the AEB-1 monitor:
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197
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198 ARM Evaluation Board Boot Monitor 0.01 (19 APR 1998)
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199 Press ENTER within 2 seconds to stop autoboot
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200 Boot: help
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201 Module is BootStrap 1.00 (14 Aug 1998)
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202
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203 Help is available on:
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204 Help Modules ROMModules UnPlug PlugIn
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205 Kill SetEnv UnSetEnv PrintEnv DownLoad
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206 Go GoS Boot PC FlashWrite
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207 FlashLoad FlashErase
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208
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209 Boot: download c000
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210 Ready to download. Use 'transmit' option on terminal emulator to download file.
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211
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212 ... at this point, I told my terminal emulator (minicom) to download
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213 the ASCII file gdb_module.img.UU (probably needs a different name
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214 on Win/NT) I had to enter ^D when the download was complete to
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215 get the monitor to come back.
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216
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217 Loaded file gdb_module.img.raw at address 0000c000, size = 13905
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218
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219 Boot: flashwrite 4018000 c000 8000
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220
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221 As above, this command actually programs the FLASH.
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222
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223 Boot: rommodules
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224 Header Base Limit
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225 04000004 04000000 040034a8 BootStrap 1.00 (14 Aug 1998)
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226 04003a74 04003800 04003bc0 Production Test 1.00 (13 Aug 1998)
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227 0400e4f4 04004000 0400e60f Angel 1.02 (12 MAY 1998)
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228 0401b608 04018000 0401b844 eCos 1.3 (Jan 26 2000) GDB stubs
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229
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230 This verifies that the eCos GDB stubs are available in FLASH.
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231
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232 Boot: plugin ecos
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233
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234 This makes the eCos GDB stubs the default "monitor." When reset the
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235 AEB-1 will start the GDB stubs, after the initial 2 second escape
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236 period.