isl.1m (2010 09)

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isl(1M) isl(1M)

(PA-RISC Systems Only)

NAME

isl - initial system loader

DESCRIPTION

isl implements the operating system independent portion of the bootstrap process. It is loaded and exe-

cuted after self-test and initialization have completed successfully.

The processor contains special purpose memory for maintaining critical conﬁguration related parameters

(e.g. Primary Boot, Alternate Boot, and Console Paths). Two forms of memory are supported: Stable

Storage and Non-Volatile Memory (NVM).

Typically, when control is transferred to

isl,anautoboot sequence takes place. An autoboot

sequence allows a complete bootstrap operation to occur with no intervention from an operator.

isl exe-

cutes commands from the

autoexecute ﬁle in a script-like fashion.

autoboot is enabled by a ﬂag in

Stable Storage.

autosearch is a mechanism that automatically locates the boot and console devices. For further infor-

mation, see pdc(1M).

During an

autoboot sequence, isl displays its revision and the name of any utility it executes. How-

ever, if autoboot is disabled, after isl

displays its revision, it then prompts for input from the console

device. Acceptable input is any

isl command name or the name of any utility available on the system.

If a non-fatal error occurs or the executed utility returns, isl again prompts for input.

Commands

There are several commands available in

isl, although not all commads are supported on cellular sys-

tems . The following is a list with a short description. Parameters may be entered on the command line

following the command name. They must be separated by spaces. isl prompts for any necessary

parameters that are not entered on the command line.

?, help Help - List commands and available utilities

listf, ls List available utilities

autoboot Enable or disable the autoboot sequence

Parameter -

on or off

autosearch Enable or disable the autosearch sequence

Parameter -

on or off

primpath Modify the Primary Boot Path

Parameter - Primary Boot Path in decimal

altpath Modify the Alternate Boot Path

Parameter - Alternate Boot Path in decimal

conspath Modify the Console Path

Parameter - Console Path in decimal

lsautofl, listautofl

List contents of the autoexecute ﬁle

display Display the Primary Boot, Alternate Boot, and Console Paths

readnvm Display the contents of one word of NVM in hexadecimal

Parameter - NVM address in decimal or standard hexadecimal notation

readss Display the contents of one word of Stable Storage in hexadecimal

Parameter - Stable Storage address in decimal or standard hexadecimal notation

DIAGNOSTICS

isl displays diagnostic information through error messages written on the console and display codes on

the LED display.

For the display codes,

CE0x are informative only. CE1x and CE2x indicate errors, some of which are

fatal and cause the system to halt. Other errors merely cause isl to display a message.

HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1

Summary of content (2 pages)

PAGE 1
isl(1M) isl(1M) (PA-RISC Systems Only) NAME isl - initial system loader DESCRIPTION isl implements the operating system independent portion of the bootstrap process. It is loaded and executed after self-test and initialization have completed successfully. The processor contains special purpose memory for maintaining critical configuration related parameters (e.g. Primary Boot, Alternate Boot, and Console Paths). Two forms of memory are supported: Stable Storage and Non-Volatile Memory (NVM).
PAGE 2
isl(1M) isl(1M) (PA-RISC Systems Only) Non-fatal errors during an autoboot sequence cause the autoboot sequence to be aborted and isl to prompt for input. After non-fatal errors during an interactive isl session, isl merely prompts for input. Fatal errors cause the system to halt. The problem must be corrected and the system RESET to recover. A iA CE00 isl is executing. CE01 isl is autobooting from the autoexecute file. CE02 Cannot find an autoexecute file. autoboot aborted.