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>ARM/ARM7 Cirrus Logic EP7xxx (EDB7211, EDB7212, EDB7312) </TITLE
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><A
NAME="EDB7XXX">ARM/ARM7 Cirrus Logic EP7xxx (EDB7211, EDB7212, EDB7312)</H1
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5321">Overview</H2
><P
>RedBoot supports both serial ports on the board and
the ethernet port. The default serial port settings are 38400,8,N,1. RedBoot
also supports flash management on the EDB7xxx for the NOR flash
only.</P
><P
>The following RedBoot configurations are supported:
<DIV
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NAME="AEN5331"><P
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><TABLE
BORDER="1"
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><THEAD
><TR
><TH
ALIGN="LEFT"
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>Configuration</TH
><TH
ALIGN="LEFT"
VALIGN="TOP"
>Mode</TH
><TH
ALIGN="LEFT"
VALIGN="TOP"
>Description</TH
><TH
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>File</TH
></TR
></THEAD
><TBODY
><TR
><TD
ALIGN="LEFT"
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>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
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>RAM</TD
><TD
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>[RAM]</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RedBoot running from RAM with RedBoot in the
flash boot sector.</TD
><TD
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VALIGN="TOP"
>redboot_RAM.ecm</TD
></TR
><TR
><TD
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>ROMRAM</TD
><TD
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>[ROMRAM]</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RedBoot running from RAM, but contained in the
board's flash boot sector (EDB7312 only).</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>redboot_ROMRAM.ecm</TD
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><P
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><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5355">Initial Installation Method</H2
><P
>A Windows or Linux utility is used to program flash using serial port
#1 via on-chip programming firmware. See board documentation for details on
in situ flash programming. </P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5358">Special RedBoot Commands</H2
><P
>None.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5361">Memory Maps</H2
><P
>The MMU page tables and LCD display buffer, if enabled, are located
at the end of DRAM. <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
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><TD
><PRE
CLASS="PROGRAMLISTING"
>Physical Address Range Description
----------------------- ----------------------------------
0x00000000 - 0x01ffffff NOR Flash (EDB7211, EDB7212)
0x00000000 - 0x00ffffff NOR Flash (EDB7312)
0x10000000 - 0x11ffffff NAND Flash
0x20000000 - 0x2fffffff Expansion 2
0x30000000 - 0x3fffffff Expansion 3
0x40000000 - 0x4fffffff PCMCIA 0
0x50000000 - 0x5fffffff PCMCIA 1
0x60000000 - 0x600007ff On-chip SRAM
0x80000000 - 0x8fffffff I/O registers
0xc0000000 - 0xc1ffffff DRAM (EDB7211, EDB7212)
0xc0000000 - 0xc0ffffff DRAM (EDB7312)
Virtual Address Range C B Description
----------------------- - - ----------------------------------
0x00000000 - 0x01ffffff Y Y DRAM
0x00000000 - 0x00fcffff Y Y DRAM (EDB7312)
0x20000000 - 0x2fffffff N N Expansion 2
0x30000000 - 0x3fffffff N N Expansion 3
0x40000000 - 0x4fffffff N N PCMCIA 0
0x50000000 - 0x5fffffff N N PCMCIA 1
0x60000000 - 0x600007ff Y Y On-chip SRAM
0x80000000 - 0x8fffffff N N I/O registers
0xc0000000 - 0xc001ffff N Y LCD buffer (if configured)
0xe0000000 - 0xe1ffffff Y Y NOR Flash (EDB7211, EDB7212)
0xe0000000 - 0xe0ffffff Y Y NOR Flash (EDB7312)
0xf0000000 - 0xf1ffffff Y Y NAND Flash
The flash based RedBoot image occupies virtual addresses 0xe0000000 - 0xe003ffff.</PRE
></TD
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></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5368">Platform Resource Usage</H2
><P
>The EP7xxx timer #2 is used as a polled timer to provide timeout support
for network and XModem file transfers.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN5371">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
>:
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><PRE
CLASS="PROGRAMLISTING"
>export TARGET=edb7211
export TARGET=edb7212
export TARGET=edb7312
export ARCH_DIR=arm
export PLATFORM_DIR=edb7xxx</PRE
></TD
></TR
></TABLE
>
Use one of the TARGET settings only.</P
><P
>The names of configuration files are listed above with the
description of the associated modes.</P
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