Set nfsboot
run nfsargs;tftp $loadaddr $bootfile;tftp $fdtaddr $fdtfile;bootm $loadaddr - $fdtaddr
run nfsboot
wdt_period
is a watchdog timeout period. Set this parameter with the proper value depending on your board
bus frequency.
NOTE
wdt_period
is inversely proportional to watchdog expiry time ie. the higher the
wdt_period
, the lower the watchdog expiry
time. So if
wdt_period
is increased to high, watchdog will expiry early.
When using watchdog as wake-up source with the default Ubuntu root filesystem, add
watchdog-device
= /dev/watchdog
to
/etc/watchdog.conf
NOTE
4.2.12 Networking
4.2.12.1 Interface naming
Following section documents the association between physical interfaces and networking interfaces as presented by software.
Interface naming in U-Boot
The following figure shows the Ethernet ports as presented in U-Boot. Note that not all ports are available.
switch
swp3
swp0 swp1 swp2
swp4 swp5
enetc#2
enetc#3
enetc#0
enetc#1
SGMII
x
QSGMII
RGMII
Figure 4. U-boot network interfaces on RDB
Linux kernel
Layerscape LS1028A BSP User Guide, Rev. 0.3, 04/2019
88
NXP Semiconductors
Summary of Contents for Layerscape LS1028A BSP
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