Kontron CP6930 User Manual page 59

Table 4-3: Bootloader Shell Options (Continued)
Name
ethact
ethaddr
flash_update
loadaddr
memtest
postresult
recover_flash
reset_unknown
ignore_posterr
uboot_flash_update
watchdogboot
watchdogos
There are three different types of bootloader environment variables:
• Script: The variable is a set of consecutive (more simple) bootloader commands to perform a specific
task. A command script is invoked using the 'run <script>' syntax. E.g. the 'run clear_env' command
would erase the bootloader environment sectors causing the bootloader to use its default environ-
ment upon next restart.
• Var: The variable controls a specific behaviour of the bootloader startup sequence. E.g. the 'boot-
delay' variable controls the time u-boot waits before execution of the bootcmd which normally loads
and starts the linux kernel.
• Auto: The variable is automatically set during bootloader startup sequence. E.g. the 'postresult'
variable stores the result of the POST.
Type
Default network interface used by network commands (bootp, tftp-
boot et al)
Var
default: ppc_4xx_eth0
contains the default base MAC address of the board. If this is not set,
Auto
the MAC address from VPD is used.
Command script to flash a Linux kernel and rootfs image transferred
Script
with tftpboot to the active Linux kernel and rootfs partition
Default load address for network transfers. This is used as a tempo-
rary storage for netbooting and firmware updates.
Var
default: 0x20000000
Controls POST memory test execution:
0: only data and address line test is executed
1: fast memory test with checkerboard pattern (tests 4MB of memory
Var
divided on different 128kB memory chunks)
2: full memory test with checkerboard pattern
If not set, the fast memory test is performed
Stores the POST result
Auto 0 – no POST error occurred
1 – a POST error occurred
Script Command script that is executed when the onboard flash is corrupted
0 – do not cold reset when unknown reset type is detected
Var
1 – enable cold reset when unknown reset type is detected (default)
0 – ignore POST errors (default)
Var
1 – Start CLI on POST errors
Command script to flash a U-Boot binary image transferred with tftp-
Script
boot to the active image bootloader
0 – disable boot monitor watchdog
5...n – timeout in seconds before boot monitor watchdog fires
Var
default: 45
Note: This is the pBMWD watchdog.
0 – disable OS load watchdog
15..dis.n – timeout in seconds before load OS watchdog fires
Var
default: 45
Note: This is the pOSWD watchdog.
46
Software Description
Description
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CP6930 User Guide