D
Y
4 S
YSTEMS
I
NC
.
H
ARDWARE
I
NSTALLATION
812628 V
ERSION
1 O
CTOBER
2003
4-15
C
ONTROLLING
THE
B
OOT
S
EQUENCE
The boot sequence for the Foundation Firmware depends on the settings of the User Link and
the state of the Serial Channel 1 DSR line. The possible power-up sequences are shown in
Table 4.13.
F
OUNDATION
F
IRMWARE
U
SED
D
URING
P
OWER
-U
P
The card can run the following programs during power-up:
Power-up Built-In Test (PBIT):
PBIT tests all major subsystems on the card. Test results
are placed in the Diagnostic Results Table (DRT).
General Purpose Monitor (GPM):
The GPM is the standard Dy 4 monitor shipped with
most SBCs. This allows users to examine memory, download and execute programs and
communicate with other boards in the CompactPCI system.
Default Application:
This is any user application programmed into the on-board Flash. The
VxWorks boot loader is initially programmed as the default application.
T
ABLE
4.13: Foundation Firmware Execution Sequence
Condition
Execution Sequence
User Link (E11–E12) off
DSR negated (cable out)
PBIT
→
Default Application
→
GPM
When the SCP/DCP-122 boots, it executes PBIT and then calls the default applica-
tion. If the default application returns, it returns to GPM.
User Link (E11–E12) off
DSR asserted
(terminal connected to
SCP/DCP-122 serial channel
1)
PBIT
→
GPM
→
Default Application
→
GPM
When the SCP/DCP-122 boots, it executes PBIT and then GPM. Type “rts” at the GPM prompt
to call the default application. If the default application returns, it returns to GPM.
User Link (E11–E12) on
DSR negated (cable out)
Default Application
→
GPM
When the SCP/DCP-122 boots, it calls the default application immediately. If the
default application returns, it returns to GPM.
User Link (E11–E12) on
DSR asserted
(terminal connected to
SCP/DCP-122 serial channel
1)
Recovery Mode (CBOOT parameters are not used)
The card uses Foundation Firmware default parameters instead of the CBOOT parameters set
in the Configuration Boot Manager (CBM).
GPM
When the SCP/DCP-122 boots, it executes GPM.
Cross Reference
Power-up Built-In-Test (PBIT) is an application that is run at power-up, after a reset, or
invoked at GPM to execute a preconfigured list of Card Level Diagnostics (CLD). For more
information about PBIT, see the V8 Foundation Firmware User’s Manual, document number
808006.
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