Table
11.
Supported
commands
(continued)
Command
Description
set-defaults
Writes
associated
default
values
into
all
the
environmental
variables.
Attention:
Customization
of
firmware
is
removed
when
you
use
this
command.
Use
only
if
the
system
does
not
boot
anymore.
Note:
Use
nvupdate
to
commit
the
changes
boot
Loads
the
operating
system
based
on
setting
in
Management
Module
boot
sequence.
No
additional
arguments
supported.
reset-all
Reboots
the
blade
server.
netboot
Boot
from
network
using
BOOTP/TFTP.
This
is
a
special
implementation
of
the
boot
net
command,
which
is
not
supported
with
this
version
of
firmware.
After
you
have
modified
environment
variables,
run
nvupdate
and
reboot
the
operating
system
with
boot
or
reset-all.
Table
12.
Environment
variables
Environment
variable
Description
boot-file
For
disk
boot.
Contains
the
yaboot
image
label
and
kernel
command
line
for
Linux.
For
example:
setenv
boot-file
linux
root=/dev/hda3
console=rtas0
Note:
Newer
kernels
can
require
console=hvc0
.
boot-device
Specifies
the
device
for
the
yaboot
loader.
Must
contain
a
valid
device
node
from
the
device
tree
or
a
valid
device
alias.
For
example:
setenv
boot-device
/pci@24004000000/ata@d/disk@
Note:
This
is
the
default.
boot-command
Contains
the
term
which
is
used
to
boot
the
operating
system.
This
is
boot
by
default
and
is
not
intended
to
be
changed.
The
variable
can
be
used
by
system
test
to
execute
test
cases
in
the
firmware
context.
Note:
You
can
always
bypass
the
boot-command
by
pressing
s
early
during
the
boot
process.
System
firmware
memory
map
The
BladeCenter
QS20
system
firmware
resides
in
the
memory
range
between
16MB
and
32MB
for
internal
usage.
Any
secondary
boot
loader
(OF
client
program)
has
its
own
memory
map
but
is
required
to
respect
that
given
range.
Further
information
about
the
system
configuration
can
be
read
from
the
Open
firmware
device-tree.
For
information
about
Cell
BE
register
mappings
please
refer
to
the
appropriate
specifications
and
data
sheets.
System
firmware
I/O
support
BladeCenter
QS20
system
firmware
supports:
v
ATA
Controller
SIL
0680A
v
Mellanox
InfiniBand
MHEA28-1TCSB
v
Flash
Module
Chapter
3.
Configuring
the
blade
server
35
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