Force SPARC/CPCI-520G, Technical Reference Manual

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OpenBoot Firmware Base-520(G) Installation
Page 46 SPARC/CPCI-52x(G)
4.8.2 NVRAM Boot Parameters
The OpenBoot firmware holds its configuration parameters in NVRAM.
At the Forth monitor prompt enter
printenv
to see a list of all available
configuration parameters.
Note: Per default the SPARC/CPCI-52x(G) boots the OS
automatically. If not, ensure that the
auto-boot?
parameter is
always set to true .
To set
parameters The OpenBoot command
setenv
may be used to set specific parameters
in the order below:
setenv [ configuration_parameter] [value]
The configuration parameters in Table 2 are involved with the boot pro-
cess.
When booting an operating system or another stand-alone program, and
neither a boot device nor a filename is supplied, the
boot
command of
the Forth monitor takes the omitted values from the NVRAM configura-
tion parameters. If the parameter
diag-switch?
is
false
,
boot-device
and
boot-file
are used. Otherwise, the OpenBoot
firmware uses
diag-device
and
diag-file
for booting.
4.8.3 Diagnostics
At Hardware Power On or Button Power On the OpenBoot firmware exe-
cutes POST. The extent of certain tests executed within the POST depend
on the state of the configuration parameter
diag-level.
The operator
can choose between minimal or maximal testing by setting this configu-
ration parameter to
min
or
max
. Furthermore an enhanced diagnostic
menu is available if setting this parameter to
menu
. If the NVRAM con-
Table 21 Setting configuration parameters
Parameter Default value Description
auto-boot? true
If
true
, automatic booting after power on or reset
boot-device disk Device from which to boot
boot-file empty string
File to boot
diag-switch? false If
true
, run in diagnostic mode
diag-device net
Device from which to boot in diagnostic mode
diag-file empty string File to boot in diagnostic mode