Jean-Marc PUTIN

i.MX28 ROM boot loader process stopping before FRAC

Discussion created by Jean-Marc PUTIN on Oct 6, 2011
Latest reply on Dec 1, 2011 by Vladan Jovanovic


We did design a board based on the Freescale i.MX28 EVK, we are trying to boot it using the MfgTool which work fine with the EVK. But with our board the boot stop during ROM loader process.

The message I get from the DEBUG UART is :

PowerPrep start initialize power...

Battery Voltage = 0.40V

No battery or bad battery detected!!!.

Disabling battery

voltage measurements./r/nLLLCDec 27 201009:58:45


with the EVK it continue like written below :


PowerPrep start initialize power...

Battery Voltage = 1.18V

No battery or bad battery                                       detected!!!.Disa

bling battery                                   voltage measurements./r/nDec 27


FRAC 0x92925552

memory type is DDR2

                   Wait for ddr ready 1power 0x00820616

Frac 0x92925552

start change cpu freq

hbus 0x00000003

cpu 0x00010001

start test memory accress

ddr2 0x40000000

finish simple test


It might be a hardware problem on our board but we did not find any yet. Did somebody had a similar problem or have an idea about what could make the ROM loader stop at this point ?

Any suggestion or ideas how to investigate are welcome.


Thanks by advance