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>ARM Cogent CMA230 Hardware Setup</TITLE
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><A
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>Appendix A. Target Setup</TD
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><H1
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><A
NAME="SETUP-ARM-CMA230">ARM Cogent CMA230 Hardware Setup</H1
><P
>The eCos Developer's Kit package comes with an EPROM
which provides GDB support for the Cogent evaluation board. An image
of this EPROM is also provided at loaders/arm-cma230/gdbload.bin
under the root of your eCos installation. </P
><P
>The EPROM is installed to socket U3 on the board. Attention
should be paid to the correct orientation of the EPROM during installation.</P
><P
>If you are going to burn a new EPROM using the binary image,
be careful to get the byte order correct. It needs to be little-endian,
which is usually the default in PC based programmer software.</P
><P
>If the GDB stub EPROM you burn does not work, try reversing
the byte-order, even if you think you have it the right way around.
At least one DOS-based EPROM burner program is known to have the
byte-order upside down.</P
><P
>The GDB stub in the EPROM allows communication with GDB using
the serial port at connector P12 (CMA101) or P3 (CMA102). The communication parameters
are fixed at 38400 baud, 8 data bits, no parity bit and 1 stop bit
(8-N-1).  No flow control is employed. Connection to the host computer
should be made using a dedicated serial cable as specified in the
Cogent CMA manual.</P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN3778">Building the GDB Stub FLASH ROM images</H2
><P
>Pre-built GDB stubs images are provided in the directory loaders/arm-cma230 relative
to the root of your eCos installation, but here are instructions
on how to rebuild them if you should ever need to.</P
><P
>CygMon images are prefixed with the name 'cygmon' and
GDB stub ROM images</P
><P
>are given the prefix 'gdb_module'.
Images may be provided in a number of formats including ELF (.img
extension), binary (.bin extension) and SREC (.srec extension). </P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN3783">Building the GDB Stubs with the eCos Configuration Tool</H2
><P
></P
><OL
TYPE="1"
><LI
><P
>1. Start with a new document - selecting the File-&#62;New
menu item if necessary to do this.</P
></LI
><LI
><P
>Choose the 
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Build</I
></SPAN
>-&#62;<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Templates</I
></SPAN
>
 menu item, and then select the ARM CMA230 hardware.</P
></LI
><LI
><P
>While still displaying the 
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Build</I
></SPAN
>
-&#62;
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>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
>Build eCos using 
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Build</I
></SPAN
>
-&#62;
<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="AEN3803">Building the GDB Stub ROMs with ecosconfig</H2
><P
></P
><OL
TYPE="1"
><LI
><P
>1. 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 cma230 stubs</PRE
></TD
></TR
></TABLE
></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
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