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eeprom(1M)							    eeprom(1M)

NAME
       eeprom -	EEPROM display and load	utility

SYNOPSIS
   SPARC
       /usr/platform/  platform-name  /sbin/eeprom [-] [-f device] [ parameter
       [=value]]

       /usr/platform/ platform-name /sbin/eeprom [-]  [-f device]  [-I]	 [mmu-
       modlist]	[ parameter [ =value]]

       eeprom  displays	 or changes the	values of parameters in	the EEPROM. It
       processes parameters in the order given.	When  processing  a  parameter
       accompanied  by	a  value, eeprom makes the indicated alteration	to the
       EEPROM; otherwise, it displays the parameter's value. When given	no pa-
       rameter	specifiers,  eeprom  displays the values of all	EEPROM parame-
       ters. A `-' (hyphen) flag specifies that	parameters and values  are  to
       be  read	 from the standard input (one parameter	or parameter=value per
       line).

       Only the	super-user may alter the EEPROM	contents.

       eeprom verifies the EEPROM checksums and	complains if they  are	incor-
       rect.

       platform-name  is  the  name  of	the platform implementation and	can be
       found using the -i option of uname(1).

   SPARC
       SPARC based systems implement firmware password protection with eeprom,
       using  the  security-mode,  security-password  and  security-#badlogins
       properties.

       EEPROM storage is simulated using a file	residing in the	 platform-spe-
       cific  boot  area.  The	/boot/solaris/bootenv.rc file simulates	EEPROM
       storage.

       Because	based systems typically	implement password protection  in  the
       system  BIOS, there is no support for password protection in the	eeprom
       program.	While it is possible to	set the	security-mode,	security-pass-
       word  and security-#badlogins properties	on  based systems, these prop-
       erties have no special meaning or behavior on  based systems.

       -f device       Use device as the EEPROM	device.

    Only
       acpi-user-options

	   A configuration variable that controls the use of ACPI. A value  of
	   0x0	attempts to use	ACPI if	it is available	on the system. A value
	   of 0x2 disables the use of ACPI. Defaults to	0x0.

       console

	   Specifies the console device. Possible values are ttya, ttyb, text,
	   and graphics. In text mode, console output goes to the frame	buffer
	   and input comes from	keyboard. Graphics mode	 is  similar  to  text
	   mode	except that text output	is replaced by a graphics screen, When
	   this	property is not	present, the console device falls back to  in-
	   put-device  and output-device. When no property is present, console
	   defaults to text.

NVRAM CONFIGURATION PARAMETERS
       Not all OpenBoot	systems	support	all parameters.	Defaults vary  depend-
       ing on the system and the PROM revision.	See the	output in the "Default
       Value" column of	the printenv command, as entered at the	ok  (OpenBoot)
       prompt, to determine the	default	for your system.

       auto-boot?

	   If  true,  boots automatically after	power-on or reset. Defaults to
	   true. On , this parameter is	controlled by the grub menu file.  See
	   installgrub(1M).

       ansi-terminal?

	   Configuration variable used to control the behavior of the terminal
	   emulator. The value false makes the terminal	emulator  stop	inter-
	   preting  ANSI  escape sequences; instead, echoes them to the	output
	   device. Defaults to true.

       boot-args

	   Holds a string of arguments that are	passed to the boot  subsystem.
	   For	example,  you can use boot-args=' - install dhcp' to request a
	   customer jumpstart installation. See	boot(1M),  kadb(1M)  and  ker-
	   nel(1M).

       boot-command

	   Command executed if auto-boot? is true. Defaults to boot.

       boot-device

	   Device from which to	boot. boot-device may contain 0	or more	device
	   specifiers separated	by spaces. Each	device specifier may be	either
	   a  prom  device alias or a prom device path.	The boot prom will at-
	   tempt to open each successive device	specifier in the  list	begin-
	   ning	 with  the  first device specifier. The	first device specifier
	   that	opens successfully will	be used	as the device  to  boot	 from.
	   Defaults to disk net.

       boot-file

	   File	 to boot (an empty string lets the secondary booter choose de-
	   fault). Defaults to empty string.

       boot-from

	   Boot	device and file	(OpenBoot PROM version 1.x only). Defaults  to
	   vmunix.

       boot-from-diag

	   Diagnostic  boot  device and	file (OpenBoot PROM version 1.x	only).
	   Defaults to le()unix.

       comX-noprobe

	   Where X is the number of the	serial port, prevents device probe  on
	   serial port X.

       diag-device

	   Diagnostic boot source device. Defaults to net.

       diag-file

	   File	 from  which  to  boot	in  diagnostic mode. Defaults to empty
	   string.

       diag-level

	   Diagnostics level. Values include off, min, max  and	 menus.	 There
	   may	be  additional platform-specific values. When set to off, POST
	   is not called. If POST is called, the value is made available as an
	   argument  to,  and is interpreted by	POST. Defaults to platform-de-
	   pendent.

       diag-switch?

	   If true, run	in diagnostic mode. Defaults to	false on most  desktop
	   systems, true on most servers.

       error-reset-recovery

	   Recover  after  an  error reset trap. Defaults to platform-specific
	   setting.

	   On platforms	supporting this	variable, it replaces the watchdog-re-
	   boot?,  watchdog-sync?,  redmode-reboot?, redmode-sync?, sir-sync?,
	   and xir-sync? parameters.

	   The options are:

	   none	    Print a message describing the reset trap and go to	 Open-
		    Boot PROM's	user interface,	aka OK prompt.

	   sync	    Invoke  OpenBoot  PROM's  sync  word after the reset trap.
		    Some platforms may treat this as none after	an  externally
		    initiated reset (XIR) trap.

	   boot	    Reboot after the reset trap. Some platforms	may treat this
		    as none after an XIR trap.

       fcode-debug?

	   If true, include name parameter for plug-in device FCodes. Defaults
	   to false.

       hardware-revision

	   System version information.

       input-device

	   Input  device  used	at power-on (usually keyboard, ttya, or	ttyb).
	   Defaults to keyboard.

       keyboard-click?

	   If true, enable keyboard click. Defaults to false.

       keymap

	   Keymap for custom keyboard.

       last-hardware-update

	   System update information.

       load-base

	   Default load	address	for client programs. Default value is 16384.

       local-mac-address?

	   If true, network drivers use	their own MAC address,	not  the  sys-
	   tem's. Defaults to false.

       mfg-mode

	   Manufacturing  mode	argument for POST. Possible values include off
	   or chamber. The value is passed as an argument to POST. Defaults to
	   off.

       mfg-switch?

	   If  true,  repeat  system self-tests	until interrupted with STOP-A.
	   Defaults to false.

       nvramrc

	   Contents of NVRAMRC.	Defaults to empty.

       network-boot-arguments

	   Arguments to	be used	by the PROM for	network	booting.  Defaults  to
	   an  empty string. network-boot-arguments can	be used	to specify the
	   boot	protocol (RARP/DHCP) to	be used	and a range of	system	knowl-
	   edge	to be used in the process.

	   The syntax for arguments supported for network booting is:

	   [protocol,] [key=value,]*

	   All	arguments are optional and can appear in any order. Commas are
	   required unless the argument	is at the end of the list.  If	speci-
	   fied,  an argument takes precedence over any	default	values,	or, if
	   booting using DHCP, over configuration information  provided	 by  a
	   DHCP	server for those parameters.

	   protocol,  above,  specifies	 the  address discovery	protocol to be
	   used.

	   Configuration parameters, listed below, are specified as  key=value
	   attribute pairs.

	   tftp-server

	       IP address of the TFTP server

	   file

	       file to download	using TFTP or URL for WAN boot

	   host-ip

	       IP address of the client	(in dotted-decimal notation)

	   router-ip

	       IP address of the default router	(in dotted-decimal notation)

	   subnet-mask

	       subnet mask (in dotted-decimal notation)

	   client-id

	       DHCP client identifier

	   hostname

	       hostname	to use in DHCP transactions

	   http-proxy

	       HTTP proxy server specification (IPADDR[:PORT])

	   tftp-retries

	       maximum number of TFTP retries

	   dhcp-retries

	       maximum number of DHCP retries

	   If  no parameters are specified (that is, network-boot-arguments is
	   an empty string), the PROM will use the  platform-specific  default
	   address discovery protocol.

	   Absence  of the protocol parameter when other configuration parame-
	   ters	are specified implies manual configuration.

	   Manual configuration	requires that the client be provided with  all
	   the	information necessary for boot.	If using manual	configuration,
	   information required	by the PROM to load the	second-stage boot pro-
	   gram	 must  be provided in network-boot-arguments while information
	   required for	the second-stage boot program can be specified	either
	   as  arguments to the	boot program or	by means of the	boot program's
	   interactive command interpreter.

	   Information required	by the PROM when  using	 manual	 configuration
	   includes  the  booting  client's IP address,	name of	the boot file,
	   and the address of the server providing the boot  file  image.  De-
	   pending  on	network	 configuration,	 it might be required that the
	   subnet mask and address of the default router to use	also be	speci-
	   fied.

       oem-banner

	   Custom  OEM	banner	(enabled  by setting oem-banner? to true). De-
	   faults to empty string.

       oem-banner?

	   If true, use	custom OEM banner. Defaults to false.

       oem-logo

	   Byte	array custom OEM logo (enabled by setting oem-logo? to	true).
	   Displayed in	hexadecimal.

       oem-logo?

	   If  true,  use  custom  OEM	logo (else, use	Sun logo). Defaults to
	   false.

       output-device

	   Output device used at power-on (usually screen, ttya, or ttyb). De-
	   faults to screen.

       redmode-reboot?

	   Specify  true  to  reboot  after  a redmode reset trap. Defaults to
	   true. (Sun Enterprise 10000 only.)

       redmode-sync?

	   Specify true	to invoke OpenBoot PROM's sync word  after  a  redmode
	   reset trap. Defaults	to false. (Sun Enterprise 10000	only.)

       rootpath

	   Specifies the root device of	the operating system.

       sbus-probe-list

	   Designate  which  SBus slots	are probed and in what order. Defaults
	   to 0123.

       screen-#columns

	   Number of on-screen columns (characters/line). Defaults to 80.

       screen-#rows

	   Number of on-screen rows (lines). Defaults to 34.

       scsi-initiator-id

	   SCSI	bus address of host adapter, range 0-7.	Defaults to 7.

       sd-targets

	   Map SCSI disk units (OpenBoot PROM version 1.x only).  Defaults  to
	   31204567,  which means that unit 0 maps to target 3,	unit 1 maps to
	   target 1, and so on.

       security-#badlogins

	   Number of incorrect security	password attempts.This property	has no
	   special meaning or behavior on  based systems.

       security-mode

	   Firmware  security  level (options: none, command, or full).	If set
	   to command or full, system will prompt for PROM security  password.
	   Defaults  to	 none.This property has	no special meaning or behavior
	   on  based systems.

       security-password

	   Firmware security password (never displayed). Can be	set only  when
	   security-mode  is  set to command or	full.This property has no spe-
	   cial	meaning	or behavior on	based systems.

	   example# eeprom security-password=
	   Changing PROM password:
	   New password:
	   Retype new password:

       selftest-#megs

	   Megabytes of	RAM to test. Ignored if	diag-switch? is	true. Defaults
	   to 1.

       sir-sync?

	   Specify  true to invoke OpenBoot PROM's sync	word after a software-
	   initiated reset (SIR) trap.	Defaults  to  false.  (Sun  Enterprise
	   10000 only.)

       skip-vme-loopback?

	   If true, POST does not do VMEbus loopback tests. Defaults to	false.

       st-targets

	   Map	SCSI  tape units (OpenBoot PROM	version	1.x only). Defaults to
	   45670123, which means that unit 0 maps to target 4, unit 1 maps  to
	   target 5, and so on.

       sunmon-compat?

	   If true, display Restricted Monitor prompt (>). Defaults to false.

       testarea

	   One-byte  scratch field, available for read/write test. Defaults to
	   0.

       tpe-link-test?

	   Enable 10baseT link test for	built-in twisted  pair	Ethernet.  De-
	   faults to true.

       ttya-mode

	   TTYA	 (baud	rate,  #bits,  parity,	#stop, handshake). Defaults to
	   9600,8,n,1,-.

	   Fields, in left-to-right order, are:

	   Baud	rate:	   110,	300, 1200, 4800, 9600...

	   Data	bits:	   5, 6, 7, 8

	   Parity:	   n(none), e(even), o(odd), m(mark), s(space)

	   Stop	bits:	   1, 1.5, 2

	   Handshake:	   -(none), h(hardware:rts/cts), s(software:xon/xoff)

       ttyb-mode

	   TTYB	(baud rate, #bits,  parity,  #stop,  handshake).  Defaults  to
	   9600,8,n,1,-.

	   Fields, in left-to-right order, are:

	   Baud	rate:	   110,	300, 1200, 4800, 9600...

	   Data	bits:	   5, 6, 7, 8

	   Stop	bits:	   1, 1.5, 2

	   Parity:	   n(none), e(even), o(odd), m(mark), s(space)

	   Handshake:	   -(none), h(hardware:rts/cts), s(software:xon/xoff)

       ttya-ignore-cd

	   If  true, operating system ignores carrier-detect on	TTYA. Defaults
	   to true.

       ttyb-ignore-cd

	   If true, operating system ignores carrier-detect on TTYB.  Defaults
	   to true.

       ttya-rts-dtr-off

	   If  true, operating system does not assert DTR and RTS on TTYA. De-
	   faults to false.

       ttyb-rts-dtr-off

	   If true, operating system does not assert DTR and RTS on TTYB.  De-
	   faults to false.

       use-nvramrc?

	   If  true,  execute  commands	in NVRAMRC during system start-up. De-
	   faults to false.

       verbosity

	   Controls the	level of verbosity of PROM messages. Can be one	of de-
	   bug,	max, normal, min, or none. Defaults to normal.

       version2?

	   If true, hybrid (1.x/2.x) PROM comes	up in version 2.x. Defaults to
	   true.

       watchdog-reboot?

	   If true, reboot after watchdog reset. Defaults to false.

       watchdog-sync?

	   Specify true	to invoke OpenBoot PROM's sync word after  a  watchdog
	   reset trap. Defaults	to false. ( Sun	Enterprise 10000 only.)

       xir-sync?

	   Specify true	to invoke OpenBoot PROM's sync word after an XIR trap.
	   Defaults to false. (Sun Enterprise 10000 only.)

       Example 1: Changing the Number of Megabytes of RAM.

       The following example demonstrates the method for changing from one  to
       two the number of megabytes of RAM that the system will test.

       example#	eeprom selftest-#megs
       selftest-#megs=1

       example#	eeprom selftest-#megs=2

       example#	eeprom selftest-#megs
       selftest-#megs=2

       Example 2: Setting the auto-boot? Parameter to true.

       The  following  example	demonstrates  the method for setting the auto-
       boot? parameter to true.

       example#	eeprom auto-boot?=true

       When the	eeprom command is executed in user mode, the parameters	with a
       trailing	 question  mark	 (?)  need  to be enclosed in double quotation
       marks ("	") to prevent the shell	from interpreting the  question	 mark.
       Preceding the question mark with	an escape character (\)	will also pre-
       vent the	shell from interpreting	the question mark.

       example%	eeprom "auto-boot?"=true

       Example 3: Using	network-boot-arguments

       To use DHCP as the boot protocol	and a hostname of abcd.example.com for
       network booting,	set these values in network-boot-arguments as:

       example#	eeprom network-boot-arguments="dhcp,hostname=abcd.example.com"

       ...then boot using the command:

       ok boot net

       Note  that  network boot	arguments specified from the PROM command line
       cause the contents of network-boot-arguments to be ignored.  For	 exam-
       ple, with network-boot-arguments	set as shown above, the	boot command:

       ok boot net:dhcp

       ...causes  DHCP to be used, but the hostname specified in network-boot-
       arguments will not be used during network boot.

       Example 4: Setting System Console to Auxiliary Device

       The command below assigns the device /dev/term/a	as the system  console
       device.	You would make such an assignment prior	to using tip(1)	to es-
       tablish a tip connection	to a host.

       On a SPARC machine:

       # eeprom	output-device=/dev/term/a

       On an  machine:

       # eeprom	console=ttya

       On a SPARC machine, the preceding command would be sufficient  for  as-
       signing the console to an auxiliary device. For an  machine, you	might,
       in addition, need to set	the characteristics of the  serial  line,  for
       which  you  would  have	to consult the BIOS documentation for that ma-
       chine. Also, on some  machines, you might use a device other  than  de-
       vice  a,	 as shown above. For example, you could	set console to ttyb if
       the second serial port is present.

       /boot/solaris/bootenv.rc

	   File	storing	eeprom values on  machines.

       /dev/openprom

	   Device file

       /usr/platform/platform-name/sbin/eeprom

	   Platform-specific version of	eeprom.	Use uname -i to	 obtain	 plat-
	   form-name.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE	TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

       passwd(1),  sh(1),  svcs(1), tip(1), uname(1), boot(1M),	kadb(1M), ker-
       nel(1M),	init(1M), svcadm(1M), attributes(5), smf(5)

       OpenBoot	3.x Command Reference Manual

       The eeprom service is  managed  by  the	service	 management  facility,
       smf(5), under the service identifier:

       svc:/platform/i86pc/eeprom:default

       Administrative actions on this service, such as enabling, disabling, or
       requesting restart, can be performed using  svcadm(1M).	The  service's
       status can be queried using the svcs(1) command.

				  29 Sep 2005			    eeprom(1M)

NAME | SYNOPSIS | NVRAM CONFIGURATION PARAMETERS

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