There are two general types of resets for the HP 3000 (Series
900): a soft reset and a hard reset.
Soft Reset
A soft reset, the type of reset used
most often, preserves the current processor state. This type of
reset performs a nondisruptive memory test and terminates all I/O
operations before executing recovery software for starting the boot
device and console selection process. A soft reset can also occur
during a software reboot at the completion of a bootable ISL utility,
such as INSTALL, UPDATE, or DUMP.
More information on issuing resets from the console is provided later in this
chapter.
Hard Reset
A hard reset is disruptive. It initiates
the processor self-test that resets memory and terminates all I/O
operations. A hard reset is necessary after a hardware failure or
after an error from which the system cannot recover.
A hard reset is initiated when the CPU is powered on. If the
system is powered on already, then entering the reset command, RS,
at the system console initiates the hard reset process.
More information on issuing resets from the console is provided
later in this chapter.
Resetting the System Using the Console
With the release of the A and N-class systems, MPE supports
two different types of access into the system service ports. For
NIO based systems, the console interfaces with the 900 Series HP
3000 through the access port (AP) located in the channel I/O (CIO)
section of the system card cage. For A and N-class systems, the
Guardian Service Processor (GSP) provides access through the core
I/O card.
In addition to providing other features and commands, both
the GSP and the AP allow the system manager or system operator (OP
capability) to issue hard or soft resets from the console keyboard
instead of using the front panel reset switch. (The system is secured
from anyone accidentally entering an GSP/AP command. It responds
to GSP/AP commands only when the console is placed in control mode
by entering CTRL B.)
The access port supports two, two-character commands for resetting
the system, as described in Table 2-1
"AP Reset Commands".
Table 2-1 AP Reset Commands
Command
Description
RS
Reset SPU (hard reset). This command initiates a processor
self-test that resets memory and terminates all I/O operations. Do not use
this type of reset in preparation for a dump.
TC
Transfer of control (soft reset). This command initiates a
reset that preserves the current processor state, terminates all I/O
operations, and performs a nondisruptive memory test.
For NIO systems, refer to Appendix A for details about using
the AP support interface for functions other than resetting the
system. For A and N class systems, refer to Appendix H for details
about using the GSP support interface for functions other that resetting
the system.
To reset the system using the access port (AP), or Guardian
Service Processor (GSP), follow the directions listed below:
Place the console in control mode by entering CTRL B at the
system prompt.
The console responds by displaying the control mode prompt
(CM>) and activating the system status line at the bottom
of the screen:
For A and N-class systems, the console responds by displaying the GSP
mode prompt (GSP>) along with a status message.
Leaving Console Mode - you may lose write access.
When Console Mode returns, type ^Ecf to get console write access.
GSP Host Name: <GSP host name>
GSP>
Issue the reset command. Enter: CM>SP
NOTE: If you have a 99X system, you must transfer to
the service processor before you reset the system.
CM> RS ** Hard reset **
or
CM> TC ** Soft reset **
If you have a 9X8LX or 9X8RX system, a PDC menu is displayed when you issue
CTRL B. From that menu, you can proceed to boot your system by
typing BO. No specific reset is required.
Example 2-1 demonstrates a soft reset of the system with autoboot
disabled using the console and AP commands for a Series 949 system.
The reset screen may a contain different boot path and additional
information, depending on the system you are using.
Example 2-1 Resetting an N-CLass System Using GSP Commands: Autoboot Disabled
:<ctl-B>
GSP Host Name: csyprel18(csysas18)
GSP> tc
TC
Execution of this command irrecoverably halts all system processing and
I/O activity and restarts the computer system.
Type Y to confirm your intention to restart the system: (Y/[N])y
********** VIRTUAL FRONT PANEL **********
System Boot detected
*****************************************
LEDs: RUN ATTENTION FAULT REMOTE POWER
FLASH FLASH OFF ON ON
platform config 626F
processor test 1142
processor test 1100
processor test 1100
processor test 1100
. . .
memory test 71A8
memory test 71A8
memory config 7280
I/O test 8107
I/O test 8107
processor test 1142
platform test 612A
I/O config 8238
*****************************************
************ EARLY BOOT VFP *************
End of early boot detected
*****************************************
Firmware Version 21.32
Duplex Console IO Dependent Code (IODC) revision 1
------------------------------------------------------------------------------
(c) Copyright 1995-2000, Hewlett-Packard Company, All rights reserved
------------------------------------------------------------------------------
Processor Speed State CoProcessor State Cache Size
Number State Inst Data
--------- -------- --------------------- ----------------- ------------
1 540 MHz Active Functional 512 KB 1 MB
3 Unknown Stopped:Deconfigured Unknown 512 KB 1 MB
Central Bus Speed (in MHz) : 133
Available Memory : 2097152 KB
Good Memory Required : Not initialized. Defaults to 32 MB.
Primary boot path: 0/0/2/0.6
Alternate boot path: 0/12/0/0.2
Console path: 0/0/4/0.0
Keyboard path: 0/0/4/0.0
---- Main Menu-------------------------------------------------------
Command Description
------- -----------
BOot [PRI|ALT|<path>] Boot from specified path
PAth [PRI|ALT|CON|KEY] [<path>] Display or modify a path
SEArch [DIsplay|IPL] [<path>] Search for boot devices
COnfiguration menu Displays or sets boot values
INformation menu Displays hardware information
SERvice menu Displays service commands
DeBug menu Displays debug commands
MFG menu Displays manufacturing commands
DIsplay Redisplay the current menu
HElp [<menu>|<command>] Display help for menu or command
RESET Restart the system
----Main Menu: Enter command or menu >
Answering NO to the boot path prompt initiates other prompts
that query for the proper path to the boot device. If you answer YES
to the primary path prompt, the system displays additional
messages as it boots the processor and operating system.
Example 2-2 demonstrates a soft reset of the system with autoboot
enabled, using console and AP/GSP commands for a N class system.
The reset screen may contain a different boot path display and additional
information, depending on the system you are using.
NOTE: If you have a 99X system, you must transfer to the service
processor before you reset the system: CM>SP
If you have a 9X8LX or 9X8RX system, you need to type BO to
boot the system from the primary path.
Example 2-2 Resetting an N class System Using AP/GSP Commands: Autoboot Enabled
:<ctl-B>
GSP Host Name: csyprel18(csysas18)
GSP> tc
TC
Execution of this command irrecoverably halts all system processing and
I/O activity and restarts the computer system.
Type Y to confirm your intention to restart the system: (Y/[N]) y
y
-> SPU hardware was successfully reset.
GSP Host Name: csyprel18(csysas18)
GSP>
********** VIRTUAL FRONT PANEL **********
System Boot detected
*****************************************
LEDs: RUN ATTENTION FAULT REMOTE POWER
FLASH FLASH OFF ON ON
platform config 626F
processor test 1142
processor test 1100
processor test 1100
. . . .
processor test 1110
processor INIT 1701
processor test 1110
processor test 1142
processor test 1142
memory config 7280
memory test 71A8
memory test 71A8
. . . .
memory test 71A8
memory config 7280
I/O test 8107
I/O test 8107
processor test 1142
platform test 612A
I/O config 8238
*****************************************
************ EARLY BOOT VFP *************
End of early boot detected
*****************************************
Firmware Version 21.32Duplex Console IO Dependent Code (IODC) revision 1
------------------------------------------------------------------------------
(c) Copyright 1995-2000, Hewlett-Packard Company, All rights reserved
------------------------------------------------------------------------------
Processor Speed State CoProcessor State Cache Size
Number State Inst Data
--------- -------- --------------------- ----------------- ------------
1 540 MHz Active Functional 512 KB 1 MB
3 Unknown Stopped:Deconfigured Unknown 512 KB 1 MB
Central Bus Speed (in MHz) : 133
Available Memory : 2097152 KB
Good Memory Required : Not initialized. Defaults to 32 MB.
Primary boot path: 0/0/2/0.6
Alternate boot path: 0/0/1/0.6
Console path: 0/0/4/0.0
Keyboard path: 0/0/4/0.0
Processor is booting from first available device.
To discontinue, press any key within 10 seconds.
10 seconds expired.
Proceeding...
Trying Primary Boot Path
------------------------
Booting...
Boot IO Dependent Code (IODC) revision 1
SOFT Booted.
MMSAVE Version 2.5
DUMPAREA found, save main memory to disc
ISL loaded
ISL Revision A.00.43 Apr 12, 2000
[insert autoboot past isl)
If you do not press a key to interrupt the sequence, the system displays
messages as it automatically boots the processor and operating system.
The autoboot flag setting determines whether the system searches for an
autoexecute file with which to boot the operating system automatically.
NOTE: If an autobooting system cannot locate a valid autoexecute
file, it boots to ISL; therefore, you see the statement Cannot find an
autoexecute file. AUTOBOOT ABORTED. This does not present any problems;
just continue with the START command in ISL.