FORCE COMPUTERS
Page 15
SSPARC/CPU-5CE
Installation Guide
1.6.2
NVRAM Boot Parameters
The OpenBoot firmware holds configuration parameters in NVRAM. At the Forth Monitor
prompt, type printenv to see a list of all available configuration parameters. The OpenBoot
command setenv may be used to set these parameters.
setenv [configuration parameter] [value]
This information refers only to those configuration parameters which are involved in the boot
process. The following table lists these parameters.
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
form the NVRAM configuration 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.
For a detailed description of all NVRAM configuration parameters, please refer to the OPEN
BOOT PROM 2.0 MANUAL SET.
Table 3: Setting Configuration Parameters
Parameter
Default Value
Description
auto-boot?
true
If true, boot automatically 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
Содержание SPARC CPU-3CE
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