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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<HTML
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><HEAD
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><TITLE
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>IA32/x86 x86-Based PC</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 Reference Manual"
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HREF="ecos-ref.html"><LINK
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TITLE="Installation and Testing"
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HREF="installation-and-testing.html"><LINK
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REL="PREVIOUS"
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TITLE="FRV/FRV400 Fujitsu FR-V 400 (MB-93091)"
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HREF="frv400.html"><LINK
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REL="NEXT"
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TITLE="MIPS/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Atlas Board"
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HREF="atlas.html"></HEAD
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><BODY
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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 Reference Manual</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="frv400.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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>Chapter 5. Installation and Testing</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="atlas.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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><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="X86PC">IA32/x86 x86-Based PC</H1
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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="AEN6596">Overview</H2
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><P
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>RedBoot supports
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two serial ports and an Intel i82559 based ethernet card (for example an Intel
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EtherExpress Pro 10/100) for communication and downloads. The default serial
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port settings are 38400,8,N,1.</P
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><P
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>The following RedBoot configurations are supported:
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      <DIV
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CLASS="INFORMALTABLE"
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><A
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NAME="AEN6606"><P
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></P
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><TABLE
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BORDER="1"
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CLASS="CALSTABLE"
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><THEAD
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><TR
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><TH
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ALIGN="LEFT"
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VALIGN="TOP"
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>Configuration</TH
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><TH
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ALIGN="LEFT"
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VALIGN="TOP"
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>Mode</TH
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><TH
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ALIGN="LEFT"
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VALIGN="TOP"
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>Description</TH
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><TH
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ALIGN="LEFT"
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VALIGN="TOP"
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>File</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Floppy</TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>[Floppy]</TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>RedBoot running from a boot floppy disk installed
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              in the A: drive of the PC.</TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>redboot_ROM.ecm</TD
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></TR
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></TBODY
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></TABLE
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><P
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></P
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></DIV
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></P
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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="AEN6620">Initial Installation</H2
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><P
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>RedBoot takes the form of a self-booting image that must be written
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onto a formatted floppy disk. The process will erase any file system or data
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that already exists on that disk, so proceed with caution.</P
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><P
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>For Red Hat Linux users, this can be done by:</P
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><TABLE
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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="SCREEN"
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>$ <TT
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CLASS="USERINPUT"
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><B
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>dd conv=sync if=install/bin/redboot.bin of=/dev/fd0H1440</B
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></TT
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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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>For NT Cygwin users, this can be done by first ensuring that the raw
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floppy device is mounted as <TT
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CLASS="FILENAME"
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>/dev/fd0</TT
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>. To check if this
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is the case, type the command <B
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CLASS="COMMAND"
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>mount</B
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> at the Cygwin bash
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prompt. If the floppy drive is already mounted, it will be listed as something
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similar to the following line:</P
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><TABLE
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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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>  \\.\a: /dev/fd0 user binmode</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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>If this line is not listed, then mount the floppy drive using the command:</P
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><TABLE
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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="SCREEN"
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>$ <TT
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CLASS="USERINPUT"
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><B
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>mount -f -b //./a: /dev/fd0</B
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></TT
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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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>To actually install the boot image on the floppy, use the command:</P
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><TABLE
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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="SCREEN"
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>$ <TT
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CLASS="USERINPUT"
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><B
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>dd conv=sync if=install/bin/redboot.bin of=/dev/fd0</B
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></TT
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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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>Insert this floppy in the A: drive of the PC to be used as a target
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and ensure that the BIOS is configured to boot from A: by default. On reset,
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the PC will boot from the floppy and be ready to be debugged via either serial
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line, or via the ethernet interface if it is installed.</P
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><DIV
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CLASS="NOTE"
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><BLOCKQUOTE
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CLASS="NOTE"
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><P
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><B
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>NOTE: </B
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>Unreliable floppy media may cause the write to silently fail. This
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can be determined if the RedBoot image does not correctly
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boot. In such cases, the floppy should be (unconditionally) reformatted
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using the <B
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CLASS="COMMAND"
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>fdformat</B
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> command on Linux, or
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<B
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CLASS="COMMAND"
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>format a: /u</B
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> on DOS/Windows.</P
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></BLOCKQUOTE
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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="AEN6642">Flash management</H2
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><P
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>PC RedBoot does not support any FLASH commands.</P
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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="AEN6645">Special RedBoot Commands</H2
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><P
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>None.</P
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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="AEN6648">Memory Maps</H2
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><P
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>All selectors are initialized to map the entire 32-bit address space
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in the familiar protected mode flat model. Page translation is not used.
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RAM up to 640K is mapped to 0x0 to 0xa0000. RAM above 640K is mapped
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from address 0x100000 upwards. Space is reserved between 0xa0000 and
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0x100000 for option ROMs and the BIOS.</P
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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="AEN6651">Rebuilding RedBoot</H2
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><P
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>These shell variables provide the platform-specific information
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needed for building RedBoot according to the procedure described in
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<A
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HREF="rebuilding-redboot.html"
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>Chapter 3</A
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>:
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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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>export TARGET=pc
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export ARCH_DIR=i386
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export PLATFORM_DIR=pc</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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><P
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>The names of configuration files are listed above with the
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description of the associated modes.</P
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></DIV
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></DIV
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HREF="frv400.html"
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>Prev</A
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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-ref.html"
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>Home</A
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ALIGN="right"
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HREF="atlas.html"
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>FRV/FRV400 Fujitsu FR-V 400 (MB-93091)</TD
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ALIGN="center"
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>Up</A
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>MIPS/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Atlas Board</TD
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