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>ARM AEB-1 Hardware Setup</TITLE
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>eCos User Guide</TH
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><A
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>Appendix A. Target Setup</TD
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><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="SETUP-ARM-AEB1">ARM AEB-1 Hardware Setup</H1
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN3686">Overview</H2
><P
>The ARM AEB-1 comes with tools in ROM. These include a simple
FLASH management tool and the Angel® monitor. eCos for
the ARM AEB-1 comes with GDB stubs suitable for programming into
the onboard FLASH. GDB is the preferred debug environment for GDB,
and while Angel provides a subset of the features in the eCos GDB
stub, Angel is unsupported.</P
><P
>Both eCos and the stubs support both Revision B and Revision
C of the AEB-1 board. Stub ROM images for both types of board can
be found in the loaders/arm-aeb directory under the root
of your eCos installation. You can select which board you are using
by selecting either the aeb or aebC platform by selecting the appropriate
platform HAL in the <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>eCos Configuration Tool</I
></SPAN
>.</P
><P
>The GDB stub can be downloaded to the board for programming
in the FLASH using the board's on-board ROM monitor:</P
><P
></P
><OL
TYPE="1"
><LI
><P
>talk to the AEB-1 board with a terminal emulator (or
a real terminal!)</P
></LI
><LI
><P
>use the board's rom menu to download a UU-encoded
version of the GDB stubs which will act as a ROM monitor</P
></LI
><LI
><P
>tell the board to use this new monitor, and then hook
GDB up to it for real debugging</P
></LI
></OL
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN3699">Talking to the Board</H2
><P
>Connect a terminal or computer's serial port to the
ARM AEB-1. On a PC with a 9-pin serial port, you can use the cable
shipped by ARM with no modification. </P
><P
>Set the terminal or terminal emulator to 9600N1 (9600 baud,
no parity, 1 stop bit). </P
><P
>Reset the board by pressing the little reset button on the
top. You will see the following text: </P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
> ARM Evaluation Board Boot Monitor 0.01 (19 APR 1998)
Press ENTER within 2 seconds to stop autoboot</PRE
></TD
></TR
></TABLE
><P
>Press ENTER quickly, and you will get the boot prompt: </P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
> Boot:</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN3707">Downloading the Stubs via the Rom Menu</H2
><P
>Using the AEB-1 rom menu to download the GDB stubs from the
provided ".UU" file.</P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>This is an annotated 'terminal' session
with the AEB-1 monitor:</P
></BLOCKQUOTE
></DIV
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>+Boot: help
Module is BootStrap 1.00 (14 Aug 1998)</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>Help is available on:</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>Help Modules ROMModules UnPlug PlugIn
Kill SetEnv UnSetEnv PrintEnv DownLoad
Go GoS Boot PC FlashWrite
FlashLoad FlashErase</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>Boot: download c000
Ready to download. Use 'transmit' option on terminal
emulator to download file.</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>... at this point, download the ASCII file "loaders/arm-aeb/
gdb_module.img.UU". The details of this operation differ
depending on which terminal emulator is used. It may be
necessary to enter "^D" (control+D) when the download completes
to get the monitor to return to command mode. </PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>Loaded file gdb_module.img.bin at address
0000c000, size = 19392 </PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN3718">Activating the GDB Stubs</H2
><P
>Commit the GDB stubs module to FLASH: </P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
> Boot: flashwrite 4018000 C000 8000
</PRE
></TD
></TR
></TABLE
><P
>Verify that the eCos/"GDB stubs" module is now added
in the list of modules in the board: </P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
> Boot: rommodules
</PRE
></TD
></TR
></TABLE
><P
>You should see output similar to the following: </P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
> Header Base Limit
04000004 04000000 040034a8 BootStrap 1.00 (14 Aug 1998)
04003a74 04003800 04003bc0 Production Test 1.00 (13 Aug 1998)
0400e4f4 04004000 0400e60f Angel 1.02 (12 MAY 1998)
0401c810 04018000 0401cbc0 eCos 1.3 (27 Jan 2000)
GDB stubs
</PRE
></TD
></TR
></TABLE
><P
>Now make the eCos/"GDB stubs" module be the default
monitor: </P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
> Boot: plugin eCos
</PRE
></TD
></TR
></TABLE
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>Since the GDB stubs are always linked at the same address
(0x4018000), the operation of writing to the FLASH and selecting
the stubs as default monitor is an idempotent operation. You can
download a new set of stubs following the same procedure - you do
not have to unregister or delete anything.</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN3730">Building the GDB Stub FLASH ROM Images</H2
><P
>Pre-built GDB stubs images are provided in the directory loaders/arm-aeb
relative to the root of your eCos installation, but here are instructions
on how to rebuild them if you should ever need to.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN3733">Building the GDB Stubs with the eCos Configuration Tool</H2
><P
></P
><OL
TYPE="1"
><LI
><P
>Start with a new document - selecting the
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>File</I
></SPAN
>
->
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>New</I
></SPAN
>
menu item if necessary to do this.</P
></LI
><LI
><P
>Choose the
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Build</I
></SPAN
>
->
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Templates</I
></SPAN
>
menu item, and then select the ARM AEB-1 hardware.</P
></LI
><LI
><P
>While still displaying the
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Build->Templates</I
></SPAN
>
dialog box, select the "stubs" package template to build a GDB
stub image. Click
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>OK</I
></SPAN
>.</P
></LI
><LI
><P
>If applicable, set the "AEB board revision" option to
"C" from "B" depending on the board revision being used.</P
></LI
><LI
><P
>Build eCos using
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Build</I
></SPAN
>
->
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Library.</I
></SPAN
></P
></LI
><LI
><P
>When the build completes, the image files can be found
in the bin/ subdirectory of the install tree. The GDB stub
ROM images have the prefix "gdb_module".</P
></LI
></OL
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN3756">Building the GDB Stub ROMs with ecosconfig</H2
><P
></P
><OL
TYPE="1"
><LI
><P
>Make an empty directory to contain the build tree,
and cd into it.</P
></LI
><LI
><P
>To build a GDB stub ROM image, enter the command:</P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>$ ecosconfig new aeb stubs</PRE
></TD
></TR
></TABLE
></LI
><LI
><P
>If applicable, edit ecos.ecc and set the AEB board revision. (CYGHWR_HAL_ARM_AEB_REVISION)
from the default "B" to "C" by uncommenting the user_value
property and setting it to "C".</P
></LI
><LI
><P
>Enter the commands
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>$ ecosconfig tree
$ make</PRE
></TD
></TR
></TABLE
></P
></LI
><LI
><P
>When the build completes, the image files can be found
in the bin/ subdirectory of the install tree. The GDB stub
ROM images have the prefix "gdb_module".</P
></LI
></OL
></DIV
></DIV
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