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><H1
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><A
NAME="PERSISTENT-STATE-FLASH">Persistent State Flash-based Configuration and Control</H1
><P
></P
><P
>RedBoot provides flash management support for storage in the flash memory
of multiple executable images and of non-volatile information such as IP addresses
and other network information.</P
><P
>RedBoot on platforms that support flash based configuration information
will report the following message the first time that RedBoot is booted on
the target:</P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>flash configuration checksum error or invalid key</PRE
></TD
></TR
></TABLE
><P
>This error can be ignored if no flash based configuration is desired,
or can be silenced by running the <B
CLASS="COMMAND"
>fconfig</B
>
command as described below. At this point you may also wish to run the <B
CLASS="COMMAND"
>fis init</B
> command. See other fis commands in <A
HREF="flash-image-system.html"
>the Section called <I
>Flash Image System (FIS)</I
></A
>.</P
><P
>Certain control and configuration information used by RedBoot can be
stored in flash. </P
><P
>The details of what information is maintained in flash differ, based
on the platform and the configuration. However, the basic operation used to
maintain this information is the same. Using the <B
CLASS="COMMAND"
>fconfig -l</B
> command, the information may be displayed and/or changed.</P
><P
>If the optional flag <TT
CLASS="COMPUTEROUTPUT"
>-i</TT
> is specified,
then the configuration database will be reset to its default
state. This is also needed the first time RedBoot is installed on the
target, or when updating to a newer RedBoot with different
configuration keys.</P
><P
>If the optional flag <TT
CLASS="COMPUTEROUTPUT"
>-l</TT
> is specified,
the configuration data is simply listed. Otherwise, each configuration parameter
will be displayed and you are given a chance to change it. The entire value
must be typed - typing just carriage return will leave a value unchanged.
Boolean values may be entered using the first letter (<TT
CLASS="COMPUTEROUTPUT"
>t</TT
>
for true, <TT
CLASS="COMPUTEROUTPUT"
>f</TT
> for false). At any time the editing
process may be stopped simply by entering a period (.) on the line. Entering
the caret (^) moves the editing back to the previous item. See “RedBoot
Editing Commands”, <A
HREF="redboot-editing-commands.html"
>the Section called <I
>RedBoot Editing Commands</I
> in Chapter 1</A
>. </P
><P
>If any changes are made in the configuration, then the updated data
will be written back to flash after getting acknowledgment from the user.</P
><P
>If the optional flag <TT
CLASS="COMPUTEROUTPUT"
>-n</TT
> is specified
(with or without <TT
CLASS="COMPUTEROUTPUT"
>-l</TT
>) then “nicknames”
of the entries are used. These are shorter and less descriptive than
“full” names. The full name may also be displayed by adding the
<TT
CLASS="COMPUTEROUTPUT"
>-f</TT
> flag.</P
><P
>The reason for telling you nicknames is that a quick way to set a single
entry is provided, using the format
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
> RedBoot> <TT
CLASS="USERINPUT"
><B
>fconfig <TT
CLASS="REPLACEABLE"
><I
>nickname</I
></TT
> <TT
CLASS="REPLACEABLE"
><I
>value</I
></TT
></B
></TT
></PRE
></TD
></TR
></TABLE
>
If no
value is supplied, the command will list and prompt for only that entry.
If a value is supplied, then the entry will be set to that value. You will
be prompted whether to write the new information into flash if any change
was made. For example
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
> RedBoot> <TT
CLASS="USERINPUT"
><B
>fconfig -l -n</B
></TT
>
boot_script: false
bootp: false
bootp_my_ip: 10.16.19.176
bootp_server_ip: 10.16.19.66
dns_ip: 10.16.19.1
gdb_port: 9000
net_debug: false
RedBoot> <TT
CLASS="USERINPUT"
><B
>fconfig bootp_my_ip 10.16.19.177</B
></TT
>
bootp_my_ip: 10.16.19.176 Setting to 10.16.19.177
Update RedBoot non-volatile configuration - continue (y/n)? <TT
CLASS="USERINPUT"
><B
>y</B
></TT
>
... Unlock from 0x507c0000-0x507e0000: .
... Erase from 0x507c0000-0x507e0000: .
... Program from 0x0000a8d0-0x0000acd0 at 0x507c0000: .
... Lock from 0x507c0000-0x507e0000: .
RedBoot></PRE
></TD
></TR
></TABLE
></P
><P
>Additionally, nicknames can be used like aliases via the format %{nickname}.
This allows the values stored by <TT
CLASS="USERINPUT"
><B
>fconfig</B
></TT
> to be used
directly by scripts and commands.</P
><P
>Depending on how your terminal program is connected and its
capabilities, you might find that you are unable to use line-editing to
delete the ‘old’ value when using the default behaviour of
<B
CLASS="COMMAND"
>fconfig <TT
CLASS="REPLACEABLE"
><I
>nickname</I
></TT
></B
> or just
plain <B
CLASS="COMMAND"
>fconfig</B
>, as shown in this example:
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>RedBoot> <TT
CLASS="USERINPUT"
><B
>fco bootp</B
></TT
>
bootp: false_</PRE
></TD
></TR
></TABLE
>
The user deletes the word “false;” and enters “true”
so the display looks like this:
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>RedBoot> <TT
CLASS="USERINPUT"
><B
>fco bootp</B
></TT
>
bootp: <TT
CLASS="USERINPUT"
><B
>true</B
></TT
>
Update RedBoot non-volatile configuration - continue (y/n)? y
... Unlock from ...
RedBoot> _</PRE
></TD
></TR
></TABLE
></P
><P
>To edit when you cannot backspace, use the optional flag
<TT
CLASS="COMPUTEROUTPUT"
>-d</TT
> (for “dumb terminal”)
to provide a simpler interface thus:
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>RedBoot> <TT
CLASS="USERINPUT"
><B
>fco -d bootp</B
></TT
>
bootp: false ? _</PRE
></TD
></TR
></TABLE
>
and you enter the value in the obvious manner thus:
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>RedBoot> <TT
CLASS="USERINPUT"
><B
>fco -d bootp</B
></TT
>
bootp: false ? <TT
CLASS="USERINPUT"
><B
>true</B
></TT
>
Update RedBoot non-volatile configuration - continue (y/n)? y
... Unlock from ...
RedBoot> _</PRE
></TD
></TR
></TABLE
></P
><P
>One item which is always present in the configuration data is the ability
to execute a script at boot time. A sequence of RedBoot commands can be entered
which will be executed when the system starts up. Optionally, a time-out period
can be provided which allows the user to abort the startup script and proceed
with normal command processing from the console. </P
><P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>RedBoot> <TT
CLASS="USERINPUT"
><B
>fconfig -l</B
></TT
>
Run script at boot: false
Use BOOTP for network configuration: false
Local IP address: 192.168.1.29
Default server IP address: 192.168.1.101
DNS server IP address: 192.168.1.1
GDB connection port: 9000
Network debug at boot time: false</PRE
></TD
></TR
></TABLE
></P
><P
>The following example sets a boot script and then shows it running.
</P
><P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>RedBoot> <TT
CLASS="USERINPUT"
><B
>fconfig</B
></TT
>
Run script at boot: false <TT
CLASS="USERINPUT"
><B
>t</B
></TT
>
Boot script:
Enter script, terminate with empty line
>> <TT
CLASS="USERINPUT"
><B
>fi li</B
></TT
>
Boot script timeout: 0 <TT
CLASS="USERINPUT"
><B
>10</B
></TT
>
Use BOOTP for network configuration: false .
Update RedBoot non-volatile configuration - continue (y/n)? <TT
CLASS="USERINPUT"
><B
>y</B
></TT
>
... Erase from 0xa0fc0000-0xa0fe0000: .
... Program from 0x8c021f60-0x8c022360 at 0xa0fc0000: .
RedBoot>
RedBoot(tm) debug environment - built 08:22:24, Aug 23 2000
Copyright (C) 2000, Red Hat, Inc.
RAM: 0x8c000000-0x8c800000
flash: 0xa0000000 - 0xa1000000, 128 blocks of 0x00020000 bytes ea.
Socket Communications, Inc: Low Power Ethernet CF Revision C \
5V/3.3V 08/27/98 IP: 192.168.1.29, Default server: 192.168.1.101 \
== Executing boot script in 10 seconds - enter ^C to abort
RedBoot> <TT
CLASS="USERINPUT"
><B
>fi li</B
></TT
>
Name flash addr Mem addr Length Entry point
RedBoot 0xA0000000 0xA0000000 0x020000 0x80000000
RedBoot config 0xA0FC0000 0xA0FC0000 0x020000 0x00000000
FIS directory 0xA0FE0000 0xA0FE0000 0x020000 0x00000000
RedBoot></PRE
></TD
></TR
></TABLE
></P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>NOTE: </B
>The bold characters above indicate where something was entered on the
console. As you can see, the <B
CLASS="COMMAND"
>fi li</B
> command
at the end came from the script,
not the console. Once the script is executed, command processing reverts to
the console. </P
></BLOCKQUOTE
></DIV
><P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>NOTE: </B
>RedBoot supports the notion of a boot script timeout, i.e. a period of
time that RedBoot waits before executing the boot time script. This period
is primarily to allow the possibility of canceling the script. Since
a timeout value of zero (0) seconds would never allow the script to
be aborted or canceled, this value is not allowed. If the timeout
value is zero, then RedBoot will abort the script execution immediately.</P
></BLOCKQUOTE
></DIV
>
On many targets, RedBoot may be configured to run from ROM or it may be
configured to run from RAM. Other configurations are also possible. All
RedBoot configurations will execute the boot script, but in certain cases
it may be desirable to limit the execution of certain script commands to
one RedBoot configuration or the other. This can be accomplished by
prepending <TT
CLASS="COMPUTEROUTPUT"
>{<startup type>}</TT
> to the
commands which should be executed only by the RedBoot configured for the
specified startup type. The following boot script illustrates this concept
by having the ROM based RedBoot load and run the RAM based RedBoot. The RAM
based RedBoot will then list flash images.</P
><P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>RedBoot> <TT
CLASS="USERINPUT"
><B
>fco</B
></TT
>
Run script at boot: false <TT
CLASS="USERINPUT"
><B
>t</B
></TT
>
Boot script:
Enter script, terminate with empty line
>> <TT
CLASS="USERINPUT"
><B
>{ROM}fis load RedBoot[RAM]</B
></TT
>
>> <TT
CLASS="USERINPUT"
><B
>{ROM}go</B
></TT
>
>> <TT
CLASS="USERINPUT"
><B
>{RAM}fis li</B
></TT
>
>>
Boot script timeout (1000ms resolution): <TT
CLASS="USERINPUT"
><B
>2</B
></TT
>
Use BOOTP for network configuration: <TT
CLASS="USERINPUT"
><B
>false</B
></TT
>
...
Update RedBoot non-volatile configuration - continue (y/n)? <TT
CLASS="USERINPUT"
><B
>y</B
></TT
>
... Unlock from 0x007c0000-0x007e0000: .
... Erase from 0x007c0000-0x007e0000: .
... Program from 0xa0015030-0xa0016030 at 0x007df000: .
... Lock from 0x007c0000-0x007e0000: .
RedBoot> <TT
CLASS="USERINPUT"
><B
>reset</B
></TT
>
... Resetting.
+Ethernet eth0: MAC address 00:80:4d:46:01:05
IP: 192.168.1.153, Default server: 192.168.1.10
RedBoot(tm) bootstrap and debug environment [ROM]
Red Hat certified release, version R1.xx - built 17:37:36, Aug 14 2001
Platform: IQ80310 (XScale)
Copyright (C) 2000, 2001, Red Hat, Inc.
RAM: 0xa0000000-0xa2000000, 0xa001b088-0xa1fdf000 available
FLASH: 0x00000000 - 0x00800000, 64 blocks of 0x00020000 bytes each.
== Executing boot script in 2.000 seconds - enter ^C to abort
RedBoot> <TT
CLASS="USERINPUT"
><B
>fis load RedBoot[RAM]</B
></TT
>
RedBoot> <TT
CLASS="USERINPUT"
><B
>go</B
></TT
>
+Ethernet eth0: MAC address 00:80:4d:46:01:05
IP: 192.168.1.153, Default server: 192.168.1.10
RedBoot(tm) bootstrap and debug environment [RAM]
Red Hat certified release, version R1.xx - built 13:03:47, Aug 14 2001
Platform: IQ80310 (XScale)
Copyright (C) 2000, 2001, Red Hat, Inc.
RAM: 0xa0000000-0xa2000000, 0xa0057fe8-0xa1fdf000 available
FLASH: 0x00000000 - 0x00800000, 64 blocks of 0x00020000 bytes each.
== Executing boot script in 2.000 seconds - enter ^C to abort
RedBoot> <TT
CLASS="USERINPUT"
><B
>fis li</B
></TT
>
Name FLASH addr Mem addr Length Entry point
RedBoot 0x00000000 0x00000000 0x00040000 0x00002000
RedBoot config 0x007DF000 0x007DF000 0x00001000 0x00000000
FIS directory 0x007E0000 0x007E0000 0x00020000 0x00000000
RedBoot></PRE
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