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>PowerPC/MPC8XX Motorola MBX</TITLE
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><H1
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><A
NAME="MBX">PowerPC/MPC8XX Motorola MBX</H1
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN7128">Overview</H2
><P
>RedBoot uses
the SMC1/COM1 serial port. The default serial port settings are 38400,8,N,1.
Ethernet is also supported using the 10-base T connector. </P
><P
>Management of onboard flash is also supported.</P
><P
>The following RedBoot configurations are supported:
<DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN7139"><P
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><THEAD
><TR
><TH
ALIGN="LEFT"
VALIGN="TOP"
>Configuration</TH
><TH
ALIGN="LEFT"
VALIGN="TOP"
>Mode</TH
><TH
ALIGN="LEFT"
VALIGN="TOP"
>Description</TH
><TH
ALIGN="LEFT"
VALIGN="TOP"
>File</TH
></TR
></THEAD
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
>ROM</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>[ROM]</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RedBoot running from the board's flash boot
sector.</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>redboot_ROM.ecm</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RAM</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>[RAM]</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RedBoot running from RAM with RedBoot in the
flash boot sector.</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>redboot_RAM.ecm</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN7158">Initial Installation Method</H2
><P
>Device programmer is used to program the XU1 socketed flash part (AM29F040B)
with the ROM mode image of RedBoot. Use the on-board EPPC-Bug monitor to update
RedBoot. </P
><P
>This assumes that you have EPPC-Bug in the on-board flash. This can
be determined by setting up the board according to the following instructions
and powering up the board. </P
><P
>The EPPC-Bug prompt should appear on the SMC1 connector at 9600 baud,
8N1. </P
><P
></P
><OL
TYPE="1"
><LI
><P
>Set jumper 3 to 2-3 [allow XU1 flash to be programmed] </P
></LI
><LI
><P
>Set jumper 4 to 2-3 [boot EPPC-Bug] </P
></LI
></OL
><P
>If it is available, program the flash by following these steps: </P
><P
></P
><OL
TYPE="1"
><LI
><P
>Prepare EPPC-Bug for download: <TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>EPPC-Bug><TT
CLASS="USERINPUT"
><B
>lo 0</B
></TT
></PRE
></TD
></TR
></TABLE
>At this point the monitor is ready for input. It will not
return the prompt until the file has been downloaded. </P
></LI
><LI
><P
>Use the terminal emulator's ASCII download feature (or a simple
clipboard copy/paste operation) to download the
<TT
CLASS="FILENAME"
>redboot.ppcbug</TT
> file.</P
><P
>Note that on Linux, <SPAN
CLASS="APPLICATION"
>Minicom</SPAN
>'s ASCII
download feature seems to be broken. A workaround is to load the file
into <SPAN
CLASS="APPLICATION"
>emacs</SPAN
> (or another editor) and copy the
full contents to the clipboard. Then press the mouse paste-button (usually
the middle one) over the <SPAN
CLASS="APPLICATION"
>Minicom</SPAN
> window. </P
></LI
><LI
><P
>Program the flash with the downloaded data: <TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>EPPC-Bug><TT
CLASS="USERINPUT"
><B
>pflash 40000 60000 fc000000</B
></TT
></PRE
></TD
></TR
></TABLE
></P
></LI
><LI
><P
>Switch off the power, and change jumper 4 to 1-2. Turn on
the power again. The board should now boot using the newly programmed RedBoot.</P
></LI
></OL
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN7187">Special RedBoot Commands</H2
><P
>None.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN7190">Memory Maps</H2
><P
>Memory Maps RedBoot sets up the following memory map on the MBX board.<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>Physical Address Range Description
----------------------- -----------
0x00000000 - 0x003fffff DRAM
0xfa100000 - 0xfa100003 LEDs
0xfe000000 - 0xfe07ffff flash (AMD29F040B)
0xff000000 - 0xff0fffff MPC registers</PRE
></TD
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></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN7194">Rebuilding RedBoot</H2
><P
>These shell variables provide the platform-specific information
needed for building RedBoot according to the procedure described in
<A
HREF="rebuilding-redboot.html"
>Chapter 3</A
>:
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
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><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>export TARGET=mbx
export ARCH_DIR=powerpc
export PLATFORM_DIR=mbx</PRE
></TD
></TR
></TABLE
></P
><P
>The names of configuration files are listed above with the
description of the associated modes.</P
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