Artesyn BajaPPC-750, User Manual

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NVRAM Commands 10-31
0002M621-15
The monitor-defined sections of nonvolatile memory are readable and
writeable and can be modified by the monitor. The Artesyn-defined
section of nonvolatile memory is also readable and writeable, but
should not be modified.
DEFINITION
void NVSet(char *GroupName,
char *FieldName,
char *Value)
10.7.5 nvupdate
nvupdate
attempts to write the Artesyn- and monitor-defined nonvolatile sec-
tions back to the NVRAM device. First the data is verified, and then it is written
to the device. The write is verified and all errors are reported.
DEFINITION
void NVUpdate(void)
10.7.6 Default Boot Device Configuration Example
The default boot device is defined in the nonvolatile memory group ‘Boot-
Params,’ in the field “BootDev.” When the BajaPPC-750 is reset or powered up,
the monitor checks this field and attempts to boot from the specified device.
Currently, the monitor supports Serial, ROM, Bus, EPROM, Flash, and Stos as
standard. If you edit the “BootDev” field and define a device that is unsupported
on your board, the monitor will display the message:
Unknown boot device
Defining “BootDev” as: “Serial” calls bootserial , “ROM” calls bootrom , “Bus”
calls bootbus , “EPROM” calls booteprom , “Flash” calls bootflash , and “Stos”
calls stos_boot . See the “Boot Commands”, Section 10.4 for details on these
commands.
EXAMPLE
In this example, nvdisplay and nvupdate are used to change the default boot
device from the bus to the ROM. The changes are made to the ‘BootParams’
group.
NOTE. The fields in the ‘BootParams’ group have different meanings for each
device. For example, “DevType” values are not used for Bus devices,
but are used by Serial devices to select the format for downloading.