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Full Discussion: Need help with OBP.
Top Forums UNIX for Dummies Questions & Answers Need help with OBP. Post 302531322 by Perderabo on Thursday 16th of June 2011 11:45:01 AM
Old 06-16-2011
Quote:
Originally Posted by rama krishna
SO Perderabo can I Infer this from your above statement. Firmware upgrade means upgrading the Open Boot Program .I mean the little piece of software in eeprom. And any changes I am making at ok> I am making them in Open boot program stored in the EEPROM.
No, ksh is software, but a softare update may not update ksh. As fpmurphy mentions there may be more than one firmware program. The V240 server on my desk right now has OBP and ALOM which are both firmware. This is why we should speak of an uptime to OBP or an update to ALOM. Terms like "software update" or "firmware update" don't really convey much information.

And OBP does not store stuff in EEPROM. When you make a change at the ok prompt you are actually changing the NVRAM. The nvram is a chip with a little battery built into the chip. When the battery dies, so does the data in the chip. OBP continues to live in EEPROM and with a lot of effort you can boot a box in this condition. To confuse the issue, Sun has a program which can be run as root called eeprom. eeprom displays the stuff in nvram. I would love to know why they called it "eeprom".

It's been a while since I updated OBP, but I remember that I have to pop the cover off and flip a switch to make EEPRPOM updatable. Then after the update I flipped it back. (Or maybe it was a jumper?) Anyway EEPROM is usually fixed in value.
 

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LEARN ABOUT DEBIAN

myson-diag

MYSON-DIAG(8)						      System Manager's Manual						     MYSON-DIAG(8)

NAME

       myson-diag - EEPROM setup and diagnostic program for ethernet cards based on the Myson MTD803 chip.

SYNOPSIS

       myson-diag [options]

DESCRIPTION

       myson-diag is a program that you can use to diagnose problems with ethernet cards based on the Myson MTD803 chip.

OPTIONS

       These  programs	follow	the  usual  GNU  command  line	syntax, with long options starting with two dashes (`-').  A summary of options is
       included below.

       -h, --help
	      Show summary of options.

       -V, --version
	      Show version of program.

       -v, --verbose
	      Verbose mode.

       -q, --quiet
	      Be very unverbose.

       -# <cardnum>
	      Use card number <cardnum>.

       -a, --show_all_registers
	      Print all registers.

       -e, --show-eeprom
	      Dump EEPROM contents to stdout.

       -E, --emergency-rewrite
	      Re-write a corrupted EEPROM.

       -p, --port-base <port>
	      Specify port to use.

       -A, --Advertise <mediaype>
	      Advertise media type. Valid Options are: 10baseT, 100baseT4, 100baseTx, 100baseTx-FD, 100baseTx-HD, 10baseT-FD and 10baseHD.

       -F, --new-interface <interface>
	      Interface number. Options that make sense are: 10baseT, 10base2, AUI, 100baseTx, 10baseT-FDX, 100baseTx-FDX,  100baseT4,	100baseFx,
	      100baseFx-FDX, MII and Autosense.

       -H, --new-hwaddress <address>
	      Set card to a new hardware address.

       -m, --show-mii
	      Dump MII management registers.

       -R, --reset
	      Reset the transceiver.

       -T, --test
	      Do register and SRAM test.

       -w, --write-EEPROM <values>
	      Write to the EEPROMS with the specified values. Do not use this, if you do not know what you do!

       -f, --force-detection
	      Try to identify the card, even if it is active.

       -t, --chip-type <card>
	      Explicitly set the chip. To get all valid numbers, run myson-diag with the options '-t -1'.

SEE ALSO

       mii-diag(8)

AUTHOR

       myson-diag  was	written  and  is  still  maintained  by Donald Becker <becker@scyld.com>.  This manual page was written by Alain Schroeder
       <alain@debian.org>, for the Debian GNU/Linux system (but may be used by others).

								 February 18, 2002						     MYSON-DIAG(8)
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