Stuck at uboot on ls1028

[Eddy1]

Hi :，

Boot from the SD card. After entering the reboot command, it is stuck in the uboot phase. Lsdk2012 version. Could you give some suggestions?

Device 0: unknown device
BOOTP broadcast 1
BOOTP broadcast 2
DHCP client bound to address 192.168.40.161 (599 ms)
*** ERROR: `serverip' not set
Cannot autoload with TFTPGET
BOOTP broadcast 1
DHCP client bound to address 192.168.40.161 (4 ms)
*** ERROR: `serverip' not set
Cannot autoload with TFTPGET
Trying load from SD ...
switch to partitions #0, OK
mmc0 is current device
Device: FSL_SDHC
Manufacturer ID: 12
OEM: 3456
Name: SDBus Speed: 25000000
Mode: MMC legacy
Rd Block Len: 512
SD version 1.0
High Capacity: Yes
Capacity: 14.6 GiB
Bus Width: 4-bit
Erase Group Size: 512 Bytes

MMC read: dev # 0, block # 32768, count 81920 ... 0 blocks read: ERROR
## Loading kernel from FIT Image at a0000000 ...
Bad FIT kernel image format!
ERROR: can't get kernel image!

[bpe]

Your console log shows a failed attempt to load required boot images from network
followed by a failed attempt to boot from MMC. This appears to happen because of
an empty or not not fully configured u-Boot environment resulting in taking
the pre-compiled (and invalid) fallback boot scenario. The main suggestion is
to check what environment is seen by u-Boot after the system reboots. More
information on u-Boot environment can be found in generic u-Boot documentation.

Best Regards,
Platon