eeprom(1M) (man pages section 1M: System Administration Commands)

man pages section 1M: System Administration Commands

eeprom(1M)

NAME

eeprom– EEPROM display and load utility

SYNOPSIS

SPARC

/usr/platform/

platform-name

-

-f

device

parameter

value

IA

/usr/platform/

platform-name

-

-f

device

-I

mmu-modlist

parameter

value

DESCRIPTION

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 parameter specifiers, eeprom displays the values of all EEPROM parameters. 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 incorrect.

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.

IA

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

Because IA 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-password and security-#badlogins properties on IA based systems, these properties have no special meaning or behavior on IA based systems.

OPTIONS

-f device: Use device as the EEPROM device.

IA Only

-I: Initialize boot properties on an IA based system. Only init(1M) run-level initialization scripts should use this option.

OPERANDS

IA 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. The default value is 0x0.
mmu-modlist: A colon-separated list of candidate modules that implement memory management. If mmu-modlist is defined, it overrides the default list derived from the memory configuration on IA based systems. Instead, the first module in the list that is found in /platform/platform-name/kernel/mmu is used.

NVRAM CONFIGURATION PARAMETERS

Not all OpenBoot systems support all parameters. Defaults may vary depending on the system and the PROM revision.

auto-boot?

If true, boot automatically after power-on or reset. Defaults to true.

ansi-terminal?

Configuration variable used to control the behavior of the terminal emulator. The value false makes the terminal emulator stop interpreting ANSI escape sequences, instead just echoing them to the output device. Default value: true.

boot-command

Command executed if auto-boot? is true. Default value is 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 attempt to open each successive device specifier in the list beginning with the first device specifier. The first device specifier which 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 default). 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. The default value is platform-dependent.

diag-switch?

If true, run in diagnostic mode. Defaults to true.

error-reset-recovery

Recover after an error reset trap. The default setting is platform-specific.

On platforms supporting this variable, it replaces the watchdog-reboot?, 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 OpenBoot 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 system'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. Default value: off.

mfg-switch?

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

nvramrc

Contents of NVRAMRC. Defaults to empty.

oem-banner

Custom OEM banner (enabled by setting oem-banner? to true). Defaults 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). Defaults 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.)

sbus-probe-list

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 IA 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 IA 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 special meaning or behavior on IA 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. Defaults 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. Defaults to false.

ttyb-rts-dtr-off

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

use-nvramrc?

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

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.)

EXAMPLES

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 prevent the shell from interpreting the question mark.

example% eeprom "auto-boot?"=true

FILES

/dev/openprom: device file
/usr/platform/platform-name/sbin/eeprom: Platform-specific version of eeprom. Use uname -i. to obtain platform-name.

ATTRIBUTES

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

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Availability	SUNWcsu

eeprom(1M)

NAME

SYNOPSIS

SPARC

IA

DESCRIPTION

SPARC

IA

OPTIONS

IA Only

OPERANDS

IA Only

NVRAM CONFIGURATION PARAMETERS

EXAMPLES

Example 1 Changing the number of megabytes of RAM.

Example 2 Setting the auto-boot? parameter to true.

FILES

ATTRIBUTES

SEE ALSO

Example 2 Setting the `auto-boot?` parameter to `true`.