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<!-- Copyright (C) 2003 Red Hat, Inc. --> <!-- This material may be distributed only subject to the terms --> <!-- and conditions set forth in the Open Publication License, v1.0 --> <!-- or later (the latest version is presently available at --> <!-- http://www.opencontent.org/openpub/). --> <!-- Distribution of the work or derivative of the work in any --> <!-- standard (paper) book form is prohibited unless prior --> <!-- permission is obtained from the copyright holder. --> <HTML ><HEAD ><TITLE >MIPS/VR4375 NEC DDB-VRC4375</TITLE ><meta name="MSSmartTagsPreventParsing" content="TRUE"> <META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="eCos Reference Manual" HREF="ecos-ref.html"><LINK REL="UP" TITLE="Installation and Testing" HREF="installation-and-testing.html"><LINK REL="PREVIOUS" TITLE="MIPS/RM7000 PMC-Sierra Ocelot" HREF="ocelot.html"><LINK REL="NEXT" TITLE="PowerPC/MPC860T Analogue & Micro PowerPC 860T" HREF="viper.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >eCos Reference Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="ocelot.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 5. Installation and Testing</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="viper.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="VRC4375">MIPS/VR4375 NEC DDB-VRC4375</H1 ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN7021">Overview</H2 ><P >RedBoot supports only serial port 1, which is connected to the upper of the stacked serial connectors on the board. The default serial port settings are 38400,8,N,1. FLASH management is also supported.</P ><P >The following RedBoot configurations are supported: <DIV CLASS="INFORMALTABLE" ><A NAME="AEN7031"><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 ></TBODY ></TABLE ><P ></P ></DIV ></P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN7050">Initial Installation Method</H2 ><P >A device programmer should be used to program a socketed FLASH part (AMD 29F040). The board as delivered is configured for a 512K EPROM. To install a FLASH ROM, Jumpers J30, J31 and J36 need to be changed as described in the board's User Manual.</P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN7053">Special RedBoot Commands</H2 ><P >None.</P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN7056">Memory Maps</H2 ><P >RedBoot sets up the memory map primarily as described in the board's User Manual. There are some minor differences, noted in the following table: <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >Physical Virtual Resource Addresses Addresses 00000000-01FFFFFF 80000000-81FFFFFF Base SDRAM (cached) 00000000-01FFFFFF A0000000-A1FFFFFF Base SDRAM (uncached) 0C000000-0C0BFFFF AC000000-AC0B0000 PCI IO space 0F000000-0F0001FF AF000000-AF0001FF VRC4375 Registers 1C000000-1C0FFFFF BC000000-BC0FFFFF VRC4372 Registers 1C100000-1DFFFFFF BC100000-BDFFFFFF PCI Memory space 1FC00000-1FC7FFFF BFC00000-BFC7FFFF FLASH ROM 80000000-8000000D C0000000-C000000D RTC 8000000E-80007FFF C000000E-C0007FFF NVRAM 81000000-81FFFFFF C1000000-C1FFFFFF Z85C30 DUART 82000000-82FFFFFF C2000000-C2FFFFFF Z8536 Timer 83000000-83FFFFFF C3000000-C3FFFFFF 8255 Parallel port 87000000-87FFFFFF C7000000-C7FFFFFF Seven segment display</PRE ></TD ></TR ></TABLE ></P ><DIV CLASS="NOTE" ><BLOCKQUOTE CLASS="NOTE" ><P ><B >NOTE: </B >By default the VRC4375 SIMM control registers are not programmed since the values used must depend on the SIMMs installed. If SIMMs are to be used, correct values must be placed in these registers before accessing the SIMM address range.</P ></BLOCKQUOTE ></DIV ><DIV CLASS="NOTE" ><BLOCKQUOTE CLASS="NOTE" ><P ><B >NOTE: </B >The allocation of address ranges to devices in the PCI IO and memory spaces is handled by the eCos PCI support library. They do not correspond to those described in the board User Manual.</P ></BLOCKQUOTE ></DIV ><DIV CLASS="NOTE" ><BLOCKQUOTE CLASS="NOTE" ><P ><B >NOTE: </B >The MMU has been set up to relocate the VRC4372 supported devices mapped at physical addresses 0x8xxxxxxx to virtual addresses 0xCxxxxxxx.</P ></BLOCKQUOTE ></DIV ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN7069">Ethernet Driver</H2 ><P >The ethernet driver is in two parts:</P ><P >A generic ether driver for the Intel i21143 device is located in <TT CLASS="FILENAME" >devs/eth/intel/i21143</TT >. Its package name is <TT CLASS="COMPUTEROUTPUT" >CYGPKG_DEVS_ETH_INTEL_I21143</TT >.</P ><P >The platform-specific ether driver is <TT CLASS="FILENAME" >devs/eth/mips/vrc4375</TT >. Its package is <TT CLASS="COMPUTEROUTPUT" >CYGPKG_DEVS_ETH_MIPS_VRC4375</TT >. This tells the generic driver the address in IO memory of the chip, for example, and other configuration details. The ESA (MAC address) is by default collected from on-board serial EEPROM, unless configured statically within this package.</P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN7078">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=vrc4373 export ARCH_DIR=mips export PLATFORM_DIR=vrc4373</PRE ></TD ></TR ></TABLE ></P ><P >The names of configuration files are listed above with the description of the associated modes.</P ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="ocelot.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ecos-ref.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="viper.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >MIPS/RM7000 PMC-Sierra Ocelot</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="installation-and-testing.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >PowerPC/MPC860T Analogue & Micro PowerPC 860T</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
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