User guide

ID 1022-8317, Rev. 2.0
NBL OperationNetBootLoader
Page 7
2.5 System Status Monitoring
The NetBootLoader provides various functions for monitoring the overall status of the system
during the operation of the NetBootLoader. The following table provides an overview of avail-
able system status monitoring functions.
2.6 Operating the NetBootLoader
2.6.1 Initial Setup
The CPU module is delivered with the NetBootLoader already installed in the NBL Flash mem-
ory and is ready for operation. However, in order for the CPU module to be used in a system,
application software must be made available for use. This may be accomplished by program-
ming such an image either to the NBL Flash memory where the NetBootLoader is located or to
the NAND Flash when available.
Upon initial power up, the NetBootLoader is started automatically. As soon as the NetBoot-
Loader has completed initialization of the CPU module, it initiates a command interpreter which
the operator can access either via the primary serial or an Ethernet interface. As long as the
command interpreter is available, the operator has the opportunity to intervene for program-
ming an image.
Prior to programming an image it may be necessary to configure the NetBootLoader or perform
other functions depending on the user’s application development environment or application
requirements. Once this has been accomplished and the image has been programmed, the
NetBootLoader is ready for operation.
2.6.2 Accessing the NetBootLoader
Initial access to the NetBootLoader can only be achieved via the primary serial interface. Use
of this interface requires either a terminal or a terminal emulator. In addition, the command in-
terpreter is required.
Table 5: System Status Monitoring Commands
CMD TITLE ALIAS FUNCTION REMARKS
FDT_SHOW - Display FDT Flattened Device Tree
FRU - Display FRU info For AMC CPUs
HELP or ? - Display online HELP pages
INFO - Display system information
IPMI - Display IPMI information
MD Memory
Display
Display memory contents Applies to all memory
PCI - Display PCI device information