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  9. 8.9.1 OpenBoot PROM Environment Variables That Can be Set With the XSCF Firmware

8.9.1 OpenBoot PROM Environment Variables That Can be Set With the XSCF Firmware


8.9.1 OpenBoot PROM Environment Variables That Can be Set With the XSCF Firmware
Of the OpenBoot PROM environment variables available for the control domain, the following environment variables are set with the XSCF firmware.
Table 8-3  OpenBoot PROM Environment Variables of the Control Domain as Set by the XSCF
OpenBoot PROM Environment Variable Description Setting Method
auto-boot? Automatically starts the control domain at the power-on time (default is true).
To configure the XSCF firmware to not automatically start the OS (stopping at {0}ok) before starting a physical partition, set this variable.
Boot script
input-device Sets the input device of the control domain console (default is virtual-console).
If OpenBoot PROM cannot start, set this variable so that the XSCF firmware can update the OpenBoot PROM environment variable and start OpenBoot PROM.
Boot script
output-device Sets the output device of the control domain console (default is virtual-console).
If OpenBoot PROM cannot start, set this variable so that the XSCF firmware can update the OpenBoot PROM environment variable and start OpenBoot PROM.
Boot script
use-nvramrc? Sets whether to execute the nvramrc contents at control domain startup (default is false).
If OpenBoot PROM cannot start, set this variable so that the XSCF firmware can update the OpenBoot PROM environment variable and start OpenBoot PROM.
use-nvramrc operand
security-mode Sets the security mode of firmware (default is none).
If OpenBoot PROM cannot start, set this variable so that the XSCF firmware can update the OpenBoot PROM environment variable and start OpenBoot PROM.
security-mode operand
The following are the setting methods with the setpparparam command for the above OpenBoot PROM environment variables, according to each type.
  1. Setting environment variables in the boot script
    The auto-boot?, input-device, and output-device OpenBoot PROM environment variables are set by the boot script for the setpparparam command. The boot script is a series of OpenBoot PROM commands executed when OpenBoot PROM starts. It can be set using the setpparparam command with the -s bootscript option specified. The boot script that is set by the setpparparam command is used only at control domain startup. The script contents are cleared after startup. You can write multiple OpenBoot PROM commands of up to 254 characters in the boot script. If the bootscript has been set incorrectly, or you want to delete a bootscript that has been set, specify the -r option along with -s bootscript.
  2. Setting environment variables as setpparparam command operands
    The OpenBoot PROM environment variables user-nvramrc? and security-mode are set using the operands of the setpparparam command. These environment variables cannot be set in the bootscript.