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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/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Atlas Board</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="IA32/x86 x86-Based PC" HREF="x86pc.html"><LINK REL="NEXT" TITLE="MIPS/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Malta Board " HREF="malta.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="x86pc.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="malta.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="ATLAS">MIPS/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Atlas Board</H1 ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN6659">Overview</H2 ><P >RedBoot supports the DgbSer serial port and the built in ethernet port for communication and downloads. The default serial port settings are 115200,8,N,1. RedBoot runs from and supports flash management for the system flash region.</P ><P >The following RedBoot configurations are supported: <DIV CLASS="INFORMALTABLE" ><A NAME="AEN6669"><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="AEN6688">Initial Installation</H2 ><P >RedBoot is installed using the code download facility built into the Atlas board. See the Atlas User manual for details, and also the Atlas download format in <A HREF="atlas.html#ATLAS-DOWNLOAD-FORMAT" >the Section called <I >Atlas download format</I ></A >.</P ><DIV CLASS="SECT3" ><H3 CLASS="SECT3" ><A NAME="AEN6692">Quick download instructions</H3 ><P >Here are quick start instructions for downloading the prebuilt RedBoot image.</P ><P ></P ><OL TYPE="1" ><LI ><P >Locate the prebuilt files in the bin directory: <TT CLASS="FILENAME" >deleteall.dl</TT > and <TT CLASS="FILENAME" >redboot.dl</TT >.</P ></LI ><LI ><P >Make sure switch S1-1 is OFF and switch S5-1 is ON. Reset the board and verify that the LED display reads <TT CLASS="COMPUTEROUTPUT" >Flash DL</TT >.</P ></LI ><LI ><P >Make sure your parallel port is connected to the 1284 port Of the Atlas board. </P ></LI ><LI ><P >Send the <TT CLASS="FILENAME" >deleteall.dl</TT > file to the parallel port to erase previous images: <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ <TT CLASS="USERINPUT" ><B >cat deleteall.dl >/dev/lp0</B ></TT ></PRE ></TD ></TR ></TABLE > When this is complete, the LED display should read <TT CLASS="COMPUTEROUTPUT" >Deleted</TT >.</P ></LI ><LI ><P >Send the ROM mode RedBoot image to the board: <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ <TT CLASS="USERINPUT" ><B >cat redboot.dl >/dev/lp0</B ></TT ></PRE ></TD ></TR ></TABLE > When this is complete, the LED display should show the last address programmed. This will be something like: <TT CLASS="COMPUTEROUTPUT" >1fc17000</TT >. </P ></LI ><LI ><P >Change switch S5-1 to OFF and reset the board. The LED display should read <TT CLASS="COMPUTEROUTPUT" >RedBoot</TT >. </P ></LI ><LI ><P >Run the RedBoot <B CLASS="COMMAND" >fis init</B > and <B CLASS="COMMAND" >fconfig</B > commands to initialize the flash. See <A HREF="atlas.html#ATLAS-ADDITIONAL-FCONFIG-OPTIONS" >the Section called <I >Additional config options</I ></A >, <A HREF="flash-image-system.html" >the Section called <I >Flash Image System (FIS)</I > in Chapter 2</A > and <A HREF="persistent-state-flash.html" >the Section called <I >Persistent State Flash-based Configuration and Control</I > in Chapter 2</A > for details. </P ></LI ></OL ></DIV ><DIV CLASS="SECT3" ><H3 CLASS="SECT3" ><A NAME="ATLAS-DOWNLOAD-FORMAT">Atlas download format</H3 ><P >In order to download RedBoot to the Atlas board, it must be converted to the Atlas download format. There are different ways of doing this depending on which version of the developer's kit is shipped with the board. </P ><P >The <I CLASS="CITETITLE" >Atlas Developer's Kit</I > CD contains an <SPAN CLASS="APPLICATION" >srec2flash</SPAN > utility. The source code for this utility is part of the <TT CLASS="FILENAME" >yamon/yamon-src-01.01.tar.gz</TT > tarball on the Dev Kit CD. The path in the expanded tarball is <TT CLASS="FILENAME" >yamon/bin/tools</TT >. To use <SPAN CLASS="APPLICATION" >srec2flash</SPAN > to convert the S-record file: <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ <TT CLASS="USERINPUT" ><B >srec2flash -EL -S29 redboot.srec >redboot.dl</B ></TT ></PRE ></TD ></TR ></TABLE > The <I CLASS="CITETITLE" >Atlas/Malta Developer's Kit</I > CD contains an <SPAN CLASS="APPLICATION" >srecconv.pl</SPAN > utility which requires Perl. This utilty is part of the <TT CLASS="FILENAME" >yamon/yamon-src-02.00.tar.gz</TT > tarball on the Dev Kit CD. The path in the expanded tarball is <TT CLASS="FILENAME" >yamon/bin/tools</TT >. To use <SPAN CLASS="APPLICATION" >srecconv</SPAN > to convert the S-record file: <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ <TT CLASS="USERINPUT" ><B >cp redboot_ROM.srec redboot_ROM.rec</B ></TT > $ <TT CLASS="USERINPUT" ><B >srecconv.pl -ES L -A 29 redboot_ROM</B ></TT ></PRE ></TD ></TR ></TABLE > The resulting file is named <TT CLASS="FILENAME" >redboot_ROM.fl</TT >.</P ></DIV ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN6746">Flash management</H2 ><DIV CLASS="SECT3" ><H3 CLASS="SECT3" ><A NAME="ATLAS-ADDITIONAL-FCONFIG-OPTIONS">Additional config options</H3 ><P >The ethernet MAC address is stored in flash manually using the <B CLASS="COMMAND" >fconfig</B > command. You can use the YAMON <B CLASS="COMMAND" >setenv ethaddr</B > command to print out the board ethernet address. Typically, it is: <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >00:0d:a0:00:<TT CLASS="REPLACEABLE" ><I >xx:xx</I ></TT ></PRE ></TD ></TR ></TABLE > where <TT CLASS="REPLACEABLE" ><I >xx.xx</I ></TT > is the hex representation of the board serial number.</P ></DIV ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN6756">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="AEN6788">Interrupts</H2 ><P >RedBoot uses an interrupt vector table which is located at address 0x80000400. Entries in this table are pointers to functions with this protoype: <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="PROGRAMLISTING" >int irq_handler( unsigned vector, unsigned data )</PRE ></TD ></TR ></TABLE >On an atlas board, the vector argument is one of 25 interrupts defined in <TT CLASS="COMPUTEROUTPUT" >hal/mips/atlas/<TT CLASS="REPLACEABLE" ><I >VERSION</I ></TT >/include/plf_intr.h</TT >: <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="PROGRAMLISTING" >#define CYGNUM_HAL_INTERRUPT_SER 0 #define CYGNUM_HAL_INTERRUPT_TIM0 1 #define CYGNUM_HAL_INTERRUPT_2 2 #define CYGNUM_HAL_INTERRUPT_3 3 #define CYGNUM_HAL_INTERRUPT_RTC 4 #define CYGNUM_HAL_INTERRUPT_COREHI 5 #define CYGNUM_HAL_INTERRUPT_CORELO 6 #define CYGNUM_HAL_INTERRUPT_7 7 #define CYGNUM_HAL_INTERRUPT_PCIA 8 #define CYGNUM_HAL_INTERRUPT_PCIB 9 #define CYGNUM_HAL_INTERRUPT_PCIC 10 #define CYGNUM_HAL_INTERRUPT_PCID 11 #define CYGNUM_HAL_INTERRUPT_ENUM 12 #define CYGNUM_HAL_INTERRUPT_DEG 13 #define CYGNUM_HAL_INTERRUPT_ATXFAIL 14 #define CYGNUM_HAL_INTERRUPT_INTA 15 #define CYGNUM_HAL_INTERRUPT_INTB 16 #define CYGNUM_HAL_INTERRUPT_INTC 17 #define CYGNUM_HAL_INTERRUPT_INTD 18 #define CYGNUM_HAL_INTERRUPT_SERR 19 #define CYGNUM_HAL_INTERRUPT_HW1 20 #define CYGNUM_HAL_INTERRUPT_HW2 21 #define CYGNUM_HAL_INTERRUPT_HW3 22 #define CYGNUM_HAL_INTERRUPT_HW4 23 #define CYGNUM_HAL_INTERRUPT_HW5 24</PRE ></TD ></TR ></TABLE >The data passed to the ISR is pulled from a data table (<TT CLASS="COMPUTEROUTPUT" >hal_interrupt_data</TT >) which immediately follows the interrupt vector table. With 25 interrupts, the data table starts at address 0x80000464 on atlas.</P ><P >An application may create a normal C function with the above prototype to be an ISR. Just poke its address into the table at the correct index and enable the interrupt at its source. The return value of the ISR is ignored by RedBoot. </P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN6797">Memory Maps</H2 ><P >Memory Maps RedBoot sets up the following memory map on the Atlas board. <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="PROGRAMLISTING" >Physical Address Range Description ----------------------- ------------- 0x00000000 - 0x07ffffff SDRAM 0x08000000 - 0x17ffffff PCI Memory Space 0x18000000 - 0x1bdfffff PCI I/O Space 0x1be00000 - 0x1bffffff System Controller 0x1c000000 - 0x1dffffff System flash 0x1e000000 - 0x1e3fffff Monitor flash 0x1f000000 - 0x1fbfffff FPGA</PRE ></TD ></TR ></TABLE ></P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN6801">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=atlas_mips32_4kc export TARGET=atlas_mips64_5kc export ARCH_DIR=mips export PLATFORM_DIR=atlas</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 ></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="x86pc.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="malta.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >IA32/x86 x86-Based PC</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/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Malta Board</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
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