Artesyn ATCA-F120 Installation and Use (August 2014) - Manual (Page 103)

U-Boot Firmware
ATCA-F120 Installation and Use (6806800D06J) 103
disable_of_
auto
Normally the execution interface to the Linux
kernel is the one for the "powerpc"
architecture, i.e. the pointer to the
OpenFirmware tree is passed to the kernel.
disable_of_auto is a string (or a set of strings)
against which the name of the executed
kernel image is compared; if a match is found,
the execution interface is switched to
traditional "ppc" (board info, inited start, initrd
end, ...).
Note that the "ppc" interface can be enforced
by defining "disable_of". No
Default
value No
reset_cause
Indicates the reason for the last reset. Possible
values are:

warm
: CPU reset

power
: Power-on

frpl_pb
: Face plate push button

rtm_pb
: RTM push button)

cpu_hreset
: CPU HRESET_REQ

cop_hreset
: COP HRESET

ipmc
: IPMC reset request

sw_wdog
: Software watchdog reset

ini_wdog
: Initial watchdog reset
Reset
Cause Yes
post_result
Contains the POST result string, if POST has
been executed. No
Default
value Yes
post_result
_adrs
Address where the POST result string is copied
to immediately before executing the
operating system. No
Default
value No
mtdroot
When using the "flashboot" boot parameter
this specifies what mtd device is to be used as
root device. /dev/mtd
block: No
rom_corrupt
ion
Set to 1 if the CRC of the u-boot image is
incorrect. NULL Yes
Table 5-9 ATCA-F120 Specific U-Boot Environment Variables (continued)
Environment
Variable
Description
Default
Value
Is Read Only