Altera-SoCFPGAU boot problem "CALIBRATION FAILED"

Hi.

I am trying to get Helio Cyclonse V SoC board working Baremetal environment.

And I am trying it by using Altera-SoCFPGA-HardwareLib-GPIO-CV-GNU for DS-5.

A problem I am having now is on boot process/preloader, I get a message saying "CALIBRATION FAILED"

I've tried on two boards but the results are the same.

Altera-SoCFPGA-HardwareLib-GPIO-CV-GNU is the one of SoC Design Example available from Altera web page and I believe it is the latest so far.

DS-5 version is 15.1 and it is not the evaluation version.

My Board is Rev 1.4

Please give me your advises.

Thank you.

Below is the message from UART.

U-Boot SPL 2013.01.01 (Oct 22 2015 - 16:13:29)

BOARD : Altera SOCFPGA Cyclone V board

CLOCK: EOSC1 clock 25000 KHz

CLOCK: EOSC2 clock 25000 KHz

CLOCK: F2S_SDR_REF clock 0KHz

CLOCK: F2S_PER_REF clock 0KHz

CLOCK: MPU clock 925 MHz

CLOCK: DDR clock 400MHz

CLOCK: UART clock 100000 KHz

CLOCK: MMU clock 50000 KHz

CLOCK: QSPI clock 370000 KHz

RESET: COLD

SDRAM: Initializing MMR registers

SDRAM: Calibration PHY

SEQ.C: Preparing to start memory calibration

SEQ.C: CALIBRATION FAILED# ## ERROR# ## Please RESET the board# ##