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>SuperH/SH3(SH7709) Hitachi Solution Engine 7709</TITLE
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><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="SE7709">SuperH/SH3(SH7709) Hitachi Solution Engine 7709</H1
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN7247">Overview</H2
><P
>This
description covers the MS7709SE01 variant. See <A
HREF="se77x9.html"
>the Section called <I
>SuperH/SH3(SH77X9) Hitachi Solution Engine 77X9</I
></A
>
for instructions for the MS7729SE01 and MS7709SSE0101 variants.</P
><P
>RedBoot uses
the COM1 and COM2 serial ports. The default serial port settings are 38400,8,N,1.
Ethernet is also supported using the 10-base T connector. </P
><P
>Management of onboard flash is also supported.</P
><P
>The following RedBoot configurations are supported:
<DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN7260"><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="AEN7279">Initial Installation Method</H2
><P
>The Solution Engine ships with the Hitachi boot monitor in EPROM
which allows for initial programming of RedBoot:</P
><P
></P
><OL
TYPE="1"
><LI
><P
>Set switch SW4-1 to ON [boot from EPROM]</P
></LI
><LI
><P
>Connect a serial cable to CN1 (SCI) and power up the board.</P
></LI
><LI
><P
>After the boot monitor banner, invoke the flash
download/program command:<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>Ready ><TT
CLASS="USERINPUT"
><B
>fl</B
></TT
></PRE
></TD
></TR
></TABLE
></P
></LI
><LI
><P
>The monitor should now ask for input:
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>Flash ROM data copy to RAM
Please Send A S-format Record</PRE
></TD
></TR
></TABLE
>At this point copy the
RedBoot ROM SREC file to the serial port:<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>$ <TT
CLASS="USERINPUT"
><B
>cat redboot_SE7709RP_ROM.eprom.srec > /dev/ttyS0</B
></TT
></PRE
></TD
></TR
></TABLE
>
Eventually you
should see something like<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>Start Addrs = A1000000
End Addrs = A1xxxxxx
Transfer complete</PRE
></TD
></TR
></TABLE
> from the monitor.</P
></LI
><LI
><P
>Set switch SW4-1 to OFF [boot from flash] and reboot the board. You
should now see the RedBoot banner.</P
></LI
></OL
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN7299">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 SE77x9 are:</P
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>-b <TT
CLASS="REPLACEABLE"
><I
><addr></I
></TT
></DT
><DD
><P
>Parameter block address. This is normally the first
page of the kernel image and defaults to 0x8c101000</P
></DD
><DT
>-i <TT
CLASS="REPLACEABLE"
><I
><addr></I
></TT
></DT
><DD
><P
>Start address of initrd
image</P
></DD
><DT
>-j <TT
CLASS="REPLACEABLE"
><I
><size></I
></TT
></DT
><DD
><P
>Size of initrd image</P
></DD
><DT
>-c <TT
CLASS="REPLACEABLE"
><I
>"args"</I
></TT
></DT
><DD
><P
>Kernel arguments string</P
></DD
><DT
>-m <TT
CLASS="REPLACEABLE"
><I
><flags></I
></TT
></DT
><DD
><P
>Mount rdonly flags. If set to a non-zero value the
root partition will be mounted read-only.</P
></DD
><DT
>-f <TT
CLASS="REPLACEABLE"
><I
><flags></I
></TT
></DT
><DD
><P
>RAM disk flags. Should normally be 0x4000</P
></DD
><DT
>-r <TT
CLASS="REPLACEABLE"
><I
><device number></I
></TT
></DT
><DD
><P
>Root device specification. /dev/ram is 0x0101</P
></DD
><DT
>-l <TT
CLASS="REPLACEABLE"
><I
><type></I
></TT
></DT
><DD
><P
>Loader type</P
></DD
></DL
></DIV
><P
>Finally the kernel entry address can be specified as an optional
argument. The default is 0x8c102000</P
><P
>For the the SE77x9, Linux by default expects to be loaded at
0x8c001000 which conflicts with the data space used by RedBoot.
To work around this, either change the CONFIG_MEMORY_START kernel
option to a higher address, or use the compressed kernel image and load
it at a higher address. For example, setting CONFIG_MEMORY_START to
0x8c100000, the kernel expects to be loaded at address 0x8c101000 with
the entry point at 0x8c102000.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN7348">Memory Maps</H2
><P
>RedBoot sets up the following memory map on the SE77x9 board.<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>Physical Address Range Description
----------------------- -----------
0x80000000 - 0x803fffff Flash (MBM29LV160)
0x81000000 - 0x813fffff EPROM (M27C800)
0x8c000000 - 0x8dffffff DRAM
0xb0000000 - 0xb03fffff Ethernet (DP83902A)
0xb0800000 - 0xb08fffff 16C552A
0xb1000000 - 0xb100ffff Switches
0xb1800000 - 0xb18fffff LEDs
0xb8000000 - 0xbbffffff PCMCIA (MaruBun)</PRE
></TD
></TR
></TABLE
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN7352">Ethernet Driver</H2
><P
>The ethernet driver uses a hardwired ESA which can, at present,
only be changed in CDL.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN7355">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=se77x9
export ARCH_DIR=sh
export PLATFORM_DIR=se77x9</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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