URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [doc/] [html/] [ref/] [ocelot.html] - Rev 593
Go to most recent revision | Compare with Previous | Blame | View Log
<!-- 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/RM7000 PMC-Sierra Ocelot</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/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Malta Board " HREF="malta.html"><LINK REL="NEXT" TITLE="MIPS/VR4375 NEC DDB-VRC4375" HREF="vrc4375.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="malta.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="vrc4375.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="OCELOT">MIPS/RM7000 PMC-Sierra Ocelot</H1 ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN6944">Overview</H2 ><P >RedBoot uses the front facing serial port. The default serial port settings are 38400,8,N,1. RedBoot also supports ethernet. Management of onboard flash is also supported.</P ><P >The following RedBoot configurations are supported: <DIV CLASS="INFORMALTABLE" ><A NAME="AEN6954"><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 ></P ></DIV ></P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN6973">Additional commands</H2 ><P >The <B CLASS="COMMAND" >exec</B > command which allows the loading and execution of Linux kernels, is supported for this architecture (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 MIPS boards are:</P ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT >-b <TT CLASS="REPLACEABLE" ><I ><addr></I ></TT ></DT ><DD ><P >Location to store command line and environment passed to kernel</P ></DD ><DT >-w <TT CLASS="REPLACEABLE" ><I ><time></I ></TT ></DT ><DD ><P >Wait time in seconds before starting kernel</P ></DD ><DT >-c <TT CLASS="REPLACEABLE" ><I >"params"</I ></TT ></DT ><DD ><P >Parameters passed to kernel</P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I ><addr></I ></TT ></DT ><DD ><P >Kernel entry point, defaulting to the entry point of the last image loaded</P ></DD ></DL ></DIV ><P >Linux kernels on MIPS platforms expect the entry point to be called with arguments in the registers equivalent to a C call with prototype: <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="PROGRAMLISTING" >void Linux(int argc, char **argv, char **envp);</PRE ></TD ></TR ></TABLE ></P ><P >RedBoot will place the appropriate data at the offset specified by the <TT CLASS="PARAMETER" ><I >-b</I ></TT > parameter, or by default at address 0x80080000, and will set the arguments accordingly when calling into the kernel.</P ><P >The default entry point, if no image with explicit entry point has been loaded and none is specified, is 0x80000750.</P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN7005">Memory Maps</H2 ><P >RedBoot sets up the following memory map on the Ocelot board. </P ><P >Note that these addresses are accessed through kseg0/1 and thus translate to the actual address range 0x80000000-0xbfffffff, depending on the need for caching/non-caching access to the bus.<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 - 0x0fffffff SDRAM 0x10000000 - 0x10ffffff PCI I/O space 0x12000000 - 0x13ffffff PCI Memory space 0x14000000 - 0x1400ffff Galileo system controller 0x1c000000 - 0x1c0000ff PLD (board logic) 0x1fc00000 - 0x1fc7ffff flash</PRE ></TD ></TR ></TABLE ></P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN7013">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=ocelot export ARCH_DIR=mips export PLATFORM_DIR=rm7000/ocelot</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="malta.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="vrc4375.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >MIPS/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Malta Board</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" >MIPS/VR4375 NEC DDB-VRC4375</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
Go to most recent revision | Compare with Previous | Blame | View Log