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><A
NAME="EBSA285">ARM/StrongARM(SA110) Intel EBSA 285</H1
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5585">Overview</H2
><P
>RedBoot
uses the single EBSA-285 serial port. The default serial port settings are
38400,8,N,1. If the EBSA-285 is used as a host on a PCI backplane, ethernet
is supported using an Intel PRO/100+ ethernet adapter. Management of
onboard flash is also supported.</P
><P
>The following RedBoot configurations are supported:
<DIV
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><A
NAME="AEN5595"><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
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></DIV
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></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5614">Initial Installation Method</H2
><P
>A linux application is used to program the flash over the PCI bus. Sources
and build instructions for this utility are located in the RedBoot sources
in: <TT
CLASS="FILENAME"
>packages/hal/arm/ebsa285/current/support/linux/safl_util</TT
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5618">Communication Channels</H2
><P
>Serial, Intel PRO 10/100+ 82559 PCI ethernet card.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5621">Special RedBoot Commands</H2
><P
>None.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5624">Memory Maps</H2
><P
>Physical and virtual mapping are mapped one to one on the EBSA-285 using
a first level page table located at address 0x4000. No second level tables
are used. <DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>NOTE: </B
>The virtual memory maps in this section use a C and B column to indicate
whether or not the region is cached (C) or buffered (B).</P
></BLOCKQUOTE
></DIV
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>Address Range C B Description
----------------------- - - ----------------------------------
0x00000000 - 0x01ffffff Y Y SDRAM
0x40000000 - 0x400fffff N N 21285 Registers
0x41000000 - 0x413fffff Y N flash
0x42000000 - 0x420fffff N N 21285 CSR Space
0x50000000 - 0x50ffffff Y Y Cache Clean
0x78000000 - 0x78ffffff N N Outbound Write Flush
0x79000000 - 0x7c0fffff N N PCI IACK/Config/IO
0x80000000 - 0xffffffff N Y PCI Memory </PRE
></TD
></TR
></TABLE
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5631">Platform Resource Usage</H2
><P
>Timer3 is used as a polled timer to provide timeout support for networking
and XModem file transfers.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5634">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
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><TD
><PRE
CLASS="PROGRAMLISTING"
>export TARGET=ebsa285
export ARCH_DIR=arm
export PLATFORM_DIR=ebsa285</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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