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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<!-- This material may be distributed only subject to the terms      -->
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<HTML
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><HEAD
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><TITLE
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>TX49 Hardware Setup</TITLE
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><meta name="MSSmartTagsPreventParsing" content="TRUE">
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<META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
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"><LINK
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REL="HOME"
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TITLE="eCos User Guide"
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HREF="ecos-user-guide.html"><LINK
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REL="UP"
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TITLE="Target Setup"
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HREF="appendix-target-setup.html"><LINK
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REL="PREVIOUS"
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TITLE="TX39 Architectural Simulator Setup"
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HREF="setup-tx39-sim.html"><LINK
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REL="NEXT"
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TITLE="VR4300 Hardware Setup"
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HREF="setup-vr4300-vrc4373.html"></HEAD
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><BODY
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CLASS="SECT1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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><DIV
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CELLPADDING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>eCos User Guide</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="setup-tx39-sim.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Appendix A. Target Setup</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="setup-vr4300-vrc4373.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="SETUP-TX49-REF4955">TX49 Hardware Setup</H1
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><P
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>The eCos installation CD contains a copy of the eCos GDB stubs
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in  SREC format which must be programmed into the board&#8217;s
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FLASH memory.</P
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="AEN3296">Preparing the GDB stubs</H2
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><P
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>These stub preparation steps are not strictly necessary as
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the eCos distribution ships with pre-compiled stubs in the directory <TT
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CLASS="FILENAME"
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>loaders/tx49-ref4955</TT
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> relative
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to the installation root.</P
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><DIV
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CLASS="SECT3"
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><H3
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CLASS="SECT3"
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><A
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NAME="AEN3300">Building the GDB stub image with the eCos Configuration Tool</H3
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><P
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></P
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><OL
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TYPE="1"
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><LI
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><P
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>                 Start with a new document - selecting the
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<SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>File-&#62;New</I
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></SPAN
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>
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 menu item if necessary to do this.</P
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></LI
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><LI
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><P
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>Choose the
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<SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>Build-&#62;Templates</I
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></SPAN
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>
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 menu item, and then select the TX49 REF4955 hardware.</P
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></LI
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><LI
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><P
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>While still displaying the
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<SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>Build-&#62;Templates</I
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></SPAN
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>
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 dialog box, select the stubs package template to build a GDB stub.
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Click
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<SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>OK</I
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></SPAN
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>.</P
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></LI
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><LI
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><P
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>Build eCos stubs using
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<SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>Build-&#62;Library</I
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></SPAN
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>.</P
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></LI
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><LI
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><P
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>When the build completes, the image files can be found
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in the bin/ subdirectory of the install tree. GDB stub
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images have the prefix gdb_module.</P
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></LI
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></OL
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></DIV
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><DIV
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CLASS="SECT3"
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><H3
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CLASS="SECT3"
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><A
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NAME="AEN3318">Building the GDB stub image with ecosconfig</H3
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><P
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></P
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><OL
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TYPE="1"
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><LI
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><P
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>                 Make an empty directory to contain the build tree,
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                  and cd into it.</P
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></LI
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><LI
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><P
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>To build a GDB stub ROM image, enter the command:</P
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><TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>$ ecosconfig new ref4955 stubs </PRE
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></TD
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></TR
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></TABLE
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></LI
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><LI
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><P
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>Enter the commands:</P
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><TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>$ ecosconfig tree
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$ make</PRE
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></TD
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></TR
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></TABLE
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></LI
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><LI
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><P
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>When the build completes, the image files can be found
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in the bin/ subdirectory of the install tree. GDB stub
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images have the prefix gdb_module.</P
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></LI
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></OL
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></DIV
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></DIV
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="AEN3331">Installing GDB stubs into FLASH</H2
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><P
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>Boot into the board&#8217;s firmware in little-endian mode:</P
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><P
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>Set the switches like this:   </P
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><P
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>SW1: 10000000 (first lever up, the rest down)
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SW2: 10000010</P
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><P
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>Connect serial cable on the lower connector, configure terminal
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emulator for 38400, 8-N-1.</P
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><P
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>When booting the board, you should get this prompt:</P
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><TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>HCP5 rev 0.9B .
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HCP5?</PRE
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></TD
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></TR
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></TABLE
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><P
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>Select o (option), a (FLASH) and b (boot write). You should
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see this:</P
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><TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>Boot ROM Write
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ROM address-ffffffffbd000000, Boot Bus-[32bit]
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ID2 0 4 ffffffffa002ad40
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zzz SS-40000 IV-1 CS-20000 CC-2
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Flash ROM-[28F640J5], [16bit chip] * 2 * 1
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Block size-00040000  count-64
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ROM adr ffffffffbd000000-ffffffffbe000000  mask-00fc0000
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Send Srecord file sa=00000000 size=ffffffffffffffff
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ra=fffffffffe000000
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          </PRE
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></TD
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></TR
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></TABLE
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><P
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>Now send the stub SREC data down to the board using the terminal
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 emulator&#8217;s &#8216;send ASCII&#8217; (or similar)
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functionality. </P
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><P
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>Red Hat has experienced some sensitivity to how fast the data
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is written to the board. Under Windows you should configure Minicom
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to use a line delay of 100 milliseconds. Under Linux, use the slow_cat.tcl
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 script:</P
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><TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>% cd BASE_DIR/packages/hal/mips/ref4955/<TT
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CLASS="REPLACEABLE"
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><I
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>&#60;version&#62;</I
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></TT
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>/misc
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% slow_cat.tcl &lt; [path]/gdb_module.srec &#62; /dev/ttyS0</PRE
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></TD
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></TR
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></TABLE
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><P
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>Power off the board, and change it to boot the GDB stubs in
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big-endian mode by setting the switches like this:</P
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><P
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>SW1: 00000000 (all levers down)
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SW2: 10001010</P
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><P
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>The GDB stubs allow communication with GDB using the serial
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port at connector PJ7A (lower connector). The communication parameters
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are  fixed at 38400 baud, 8 data bits, no parity bit and 1 stop
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bit  (8-N-1). No flow control is employed. Connection to the host
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computer should be made using a straight through serial cable.</P
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></DIV
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="setup-tx39-sim.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="ecos-user-guide.html"
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ACCESSKEY="H"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="setup-vr4300-vrc4373.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>TX39 Architectural Simulator Setup</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="appendix-target-setup.html"
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ACCESSKEY="U"
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>Up</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>VR4300 Hardware Setup</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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