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>ARM/ARM9 Altera Excalibur</TITLE
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><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="EXCALIBURARM9">ARM/ARM9 Altera Excalibur</H1
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5486">Overview</H2
><P
>RedBoot supports the serial port labelled
P2 on the board. The default serial port settings are 57600,8,N,1. RedBoot
also supports flash management on the Excalibur.</P
><P
>The following RedBoot configurations are supported:
<DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN5496"><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"
>ROMRAM</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>[ROMRAM]</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RedBoot running from RAM, but contained in the
board's flash boot sector.</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>redboot_ROMRAM.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
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
>REDBOOT</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>[ROMRAM]</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RedBoot running from top of RAM, but contained in
the board's flash boot sector.</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>redboot_REDBOOT.ecm</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>NOTE: </B
>RedBoot is currently hardwired to use a 128MB SDRAM SIMM module.</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5523">Initial Installation Method</H2
><P
>A Windows utility
(<SPAN
CLASS="APPLICATION"
>exc_flash_programmer.exe</SPAN
>) is used to
program flash using the ByteBlasterMV JTAG unit.
See board documentation for details on
in situ flash programming. </P
><P
>For ethernet to work (under Linux) the following jumper
settings should be used on a REV 2 board: <P
CLASS="LITERALLAYOUT"
>SW2-9 : OFF<br>
U179 : 2-3<br>
JP14-18 : OPEN<br>
JP40-41 : 2-3<br>
JP51-55 : 2-3</P
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5529">Flash management</H2
><P
>The ROMRAM and REDBOOT configurations supported on this platform
differ only in the memory layout (ROMRAM configuration runs RedBoot from
0x00008000 while REDBOOT configuration runs RedBoot from 0x07f80000). The
REDBOOT configuration allows applications to be loaded and run from
address 0x00008000.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5532">Special RedBoot Commands</H2
><P
>The <B
CLASS="COMMAND"
>exec</B
> command which allows the loading
and execution of Linux kernels,
is supported for this board (see <A
HREF="executing-programs.html"
>the Section called <I
>Executing Programs from RedBoot</I
> in Chapter 2</A
>). The <B
CLASS="COMMAND"
>exec</B
> parameters used for the Excalibur are:</P
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>-b <TT
CLASS="REPLACEABLE"
><I
><addr></I
></TT
></DT
><DD
><P
>Location Linux kernel was loaded to</P
></DD
><DT
>-l <TT
CLASS="REPLACEABLE"
><I
><len></I
></TT
></DT
><DD
><P
>Length of kernel</P
></DD
><DT
>-c <TT
CLASS="REPLACEABLE"
><I
>"params"</I
></TT
></DT
><DD
><P
>Parameters passed to kernel</P
></DD
><DT
>-r <TT
CLASS="REPLACEABLE"
><I
><addr></I
></TT
></DT
><DD
><P
>'initrd' ramdisk location</P
></DD
><DT
>-s <TT
CLASS="REPLACEABLE"
><I
><len></I
></TT
></DT
><DD
><P
>Length of initrd ramdisk</P
></DD
></DL
></DIV
><P
>The parameters for kernel image base and size are automatically
set after a load operation. So one way of starting the kernel would
be:
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>RedBoot> <TT
CLASS="USERINPUT"
><B
>load -r -b 0x100000 zImage</B
></TT
>
Raw file loaded 0x00100000-0x001a3d6c
RedBoot> <TT
CLASS="USERINPUT"
><B
>exec -c "console=ttyUA0,57600"</B
></TT
>
Using base address 0x00100000 and length 0x000a3d6c
Uncompressing Linux.....</PRE
></TD
></TR
></TABLE
>
An image could also be put in flash and started directly:
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>RedBoot> <TT
CLASS="USERINPUT"
><B
>exec -b 0x40400000 -l 0xc0000 -c "console=ttyUA0,57600"</B
></TT
>
Uncompressing Linux.....</PRE
></TD
></TR
></TABLE
> </P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5570">Memory Maps</H2
><P
>The MMU page tables are located at 0x4000. <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"
>Physical Address Range Description
----------------------- ----------------------------------
0x00000000 - 0x07ffffff SDRAM
0x08000000 - 0x0805ffff On-chip SRAM
0x40000000 - 0x40ffffff Flash
0x7fffc000 - 0x7fffffff I/O registers
0x80000000 - 0x8001ffff PLD
Virtual Address Range C B Description
----------------------- - - ----------------------------------
0x00000000 - 0x07ffffff Y Y SDRAM
0x08000000 - 0x0805ffff Y Y On-chip SRAM
0x40000000 - 0x403fffff N Y Flash
0x7fffc000 - 0x7fffffff N N I/O registers
0x80000000 - 0x8001ffff N N PLD</PRE
></TD
></TR
></TABLE
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5577">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"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>export TARGET=excalibur_arm9
export ARCH_DIR=arm
export PLATFORM_DIR=arm9/excalibur</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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