eeprom - display or modify contents of the EEPROM or OpenPROM
eeprom [-] [-c] [-f device] [-i] [-v] [-N system]
[field[=value] ...]
eeprom provides an interface for displaying and changing the
contents of
the EEPROM or OpenPROM. Without any arguments, eeprom will
list all of
the known fields and their corresponding values. When given
the name of
a specific field, eeprom will display that value or set it
if the field
name is followed by ``='' and a value. Only the superuser
may modify the
contents of the EEPROM or OpenPROM.
The options are as follows:
- Commands are taken from stdin and displayed on stdout.
-c eeprom will fix incorrect checksum values and exit.
This flag is
quietly ignored on systems with an OpenPROM.
-f device
On systems with an EEPROM, use device instead of the
default
/dev/eeprom. On systems with an OpenPROM, use
device instead of
the default /dev/openprom.
-i If checksum values are incorrect, eeprom will ignore
them and
continue after displaying a warning. This flag is
quietly ignored
on systems with an OpenPROM.
-v On systems with an OpenPROM, be verbose when setting
a value.
Systems with an EEPROM are always verbose.
-N system
Use the system image system instead of the default
/bsd.
The following fields and values are for systems with an EEPROM:
hwupdate A valid date, such as ``7/12/95''. The
strings
``today'' and ``now'' are also acceptable.
memsize How much memory, in megabytes, is installed in the
system.
memtest How much memory, in megabytes, is to be
tested upon
power-up.
scrsize The size of the screen. Acceptable values are
``1024x1024'', ``1152x900'',
``1600x1280'', and
``1440x1440''.
watchdog_reboot If true, the system will reboot upon reset. Otherwise,
the system will fall into the monitor.
default_boot If true, the system will use the boot device stored in
bootdev.
bootdev Specifies the default boot device in the
form
cc(x,x,x), where ``cc'' is a combination
of two letters
such as ``sd'' or ``le'' and each
``x'' is a hexadecimal
number between 0 and ff, less
the prepending
``0x''.
kbdtype This value is ``0'' for all Sun keyboards.
console Specifies the console type. Valid values
are ``b&w'',
``ttya'', ``ttyb'', ``color'', and
``p4opt''.
keyclick If true, the keys click annoyingly.
diagdev This is a string very similar to that
used by bootdev.
It specifies the default boot device when
the diagnostic
switch is turned on.
diagpath A 40-character, NULL-terminated string
specifying the
kernel or stand-alone program to load
when the diagnostic
switch is turned on.
columns An 8-bit integer specifying the number of
columns on
the console.
rows An 8-bit integer specifying the number of
rows on the
console.
ttya_use_baud Use the baud rate stored in ttya_baud instead of the
default 9600.
ttya_baud A 16-bit integer specifying the baud rate
to use on
ttya.
ttya_no_rtsdtr If true, disables RTS/DTR.
ttyb_use_baud Similar to ttya_use_baud, but for ttyb.
ttyb_baud Similar to ttya_baud, but for ttyb.
ttyb_no_rtsdtr Similar to ttya_no_rtsdtr, but for ttyb.
banner An 80-character, NULL-terminated string
to use at power-up
instead of the default Sun banner.
Note that the secure, bad_login, and password fields are not
currently
supported.
Since the OpenPROM is designed such that the field names are
arbitrary,
explaining them here is dubious. Below are field names and
values that
one is likely to see on a system with an OpenPROM. NOTE:
this list may
be incomplete or incorrect due to differences between revisions of the
OpenPROM.
sunmon-compat? If true, the old EEPROM-style interface will be
used while in the monitor, rather
than the OpenPROM-style
interface.
selftest-#megs A 32-bit integer specifying the number of
megabytes of memory to test upon
power-up.
oem-logo A 64bitx64bit bitmap in Sun Iconedit
format. To
set the bitmap, give the pathname of
the file
containing the image. NOTE: this
property is not
yet supported.
oem-logo? If true, enables the use of the
bitmap stored in
oem-logo rather than the default Sun
logo.
oem-banner A string to use at power-up, rather
than the default
Sun banner.
oem-banner? If true, enables the use of the banner stored in
oem-banner rather than the default
Sun banner.
ttya-mode A string of five comma separated
fields in the
format ``9600,8,n,1,-''. The first
field is the
baud rate. The second field is the
number of data
bits. The third field is the
parity; acceptable
values for parity are ``n''
(none), ``e''
(even), ``o'' (odd), ``m'' (mark),
and ``s''
(space). The fourth field is the
number of stop
bits. The fifth field is the
``handshake''
field; acceptable values are ``-''
(none), ``h''
(RTS/CTS), and ``s'' (XON/XOFF).
ttya-rts-dtr-off If true, the system will ignore
RTS/DTR.
ttya-ignore-cd If true, the system will ignore carrier detect.
ttyb-mode Similar to ttya-mode, but for ttyb.
ttyb-rts-dtr-off Similar to ttya-rts-dtr-off, but for
ttyb.
ttyb-ignore-cd Similar to ttya-ignore-cd, but for
ttyb.
sbus-probe-list Four digits in the format ``0123''
specifying
which order to probe the sbus at
power-up. It is
unlikely that this value should ever
be changed.
screen-#columns An 8-bit integer specifying the number of columns
on the console.
screen-#rows An 8-bit integer specifying the number of rows on
the console.
auto-boot? If true, the system will boot automatically at
power-up.
watchdog-reboot? If true, the system will reboot upon
reset. Otherwise,
the system will fall into
the monitor.
input-device One of the strings ``keyboard'',
``ttya'', or
``ttyb'' specifying the default console input device.
output-device One of the strings ``screen'',
``ttya'', or
``ttyb'' specifying the default console output
device.
keyboard-click? If true, the keys click annoyingly.
sd-targets A string in the format ``31204567''
describing
the translation of physical to logical target.
st-targets Similar to sd-targets, but for
tapes. The default
translation is ``45670123''.
scsi-initiator-id The SCSI ID of the on-board SCSI
controller.
hardware-revision A 7-character string describing a
date, such as
``25May95''.
last-hardware-update Similar to hardware-revision, describing when the
CPU was last updated.
diag-switch? If true, the system will boot and
run in diagnostic
mode.
local-mac-address? When set to false, all Ethernet devices will use
the same system default MAC address.
When true,
Ethernet devices which have a unique
MAC address
will use it rather than the system
default MAC
address. This option only really
affects FCodebased
Ethernet devices. In reality,
this means
that on Sparc machines with an OpenPROM, only
hme(4) Ethernet devices respect this
setting. On
Sparc64, all on-board devices, as
well as plug-in
hme(4) boards, will respect this
setting; other
hardware will not.
/dev/eeprom the EEPROM device on systems with an EEPROM
/dev/openprom the OpenPROM device on systems with an OpenPROM
openprom(4)
The fields and their values are not necessarily well defined
on systems
with an OpenPROM. Your mileage may vary.
There are a few fields known to exist in some revisions of
the EEPROM
and/or OpenPROM that are not yet supported. Most notable
are those relating
to password protection of the EEPROM or OpenPROM.
Avoid gratuitously changing the contents of the EEPROM. It
has a limited
number of write cycles.
The date parser isn't very intelligent.
OpenBSD 3.6 May 25, 1995
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