U-Boot Failure using Terasic Ubuntu Image

Hello Yoshiaki,

Thank you for your prompt response. For the booting log, please refer to the following logs:

U-Boot SPL 2013.01.01 (Oct 12 2016 - 10:38:03)
BOARD : Altera SOCFPGA Cyclone V Board
CLOCK: EOSC1 clock 25000 KHz
CLOCK: EOSC2 clock 25000 KHz
CLOCK: F2S_SDR_REF clock 0 KHz
CLOCK: F2S_PER_REF clock 0 KHz
CLOCK: MPU clock 925 MHz
CLOCK: DDR clock 400 MHz
CLOCK: UART clock 100000 KHz
CLOCK: MMC clock 50000 KHz
CLOCK: QSPI clock 3613 KHz
RESET: COLD
INFO : Watchdog enabled
SDRAM: Initializing MMR registers
SDRAM: Calibrating PHY
SEQ.C: Preparing to start memory calibration
SEQ.C: CALIBRATION PASSED
SDRAM: 1024 MiB
ALTERA DWMMC: 0

U-Boot 2013.01.01 (Oct 12 2016 - 10:40:34)

CPU : Altera SOCFPGA Platform
BOARD : Altera SOCFPGA Cyclone V Board
I2C: ready
DRAM: 1 GiB
MMC: ALTERA DWMMC: 0
*** Warning - bad CRC, using default environment

In: serial
Out: serial
Err: serial
Skipped ethaddr assignment due to invalid EMAC address in EEPROM
Net: mii0
Warning: failed to set MAC address

Hit any key to stop autoboot: 0
reading u-boot.scr
200 bytes read in 4 ms (48.8 KiB/s)
## Executing script at 02000000
reading soc_system.rbf
7007184 bytes read in 327 ms (20.4 MiB/s)
## Starting application at 0x3FF795A4 ...
## Application terminated, rc = 0x0
reading zImage
5538512 bytes read in 257 ms (20.6 MiB/s)
reading socfpga.dtb
31245 bytes read in 6 ms (5 MiB/s)
## Flattened Device Tree blob at 00000100
Booting using the fdt blob at 0x00000100
reserving fdt memory region: addr=0 size=1000
Loading Device Tree to 03ff5000, end 03fffa0c ... OK

Starting kernel ...

This log has been gathered from the terminal through serial communication.

After printing "Starting kernel...", the terminal does not respond anymore.

However, I think that these logs are not sufficient to find the issue...

Thank you!