We have designed and built our custom board which has micron NAND flash(MT29F8G08ADBDAH4).
Able to download u.boot on the board in UART/USB dowload mode (bootmode=11) and checked back by enabling "Read Back check" flag.
but tried to boot from internal NAND boot(boot mode == 00) and it doesn't work.
Verified the BT_ pins used to configure all the boot parameters and they seems to be ok
After reset i can see "read enable(RE)" signal on the nand and i see some access on the nand bus for some time and it seems to be the first 4K read but nothing more.
If i look at the signal on the Evalboard(iMX257-3pdk) i see a very long read access : of course the rom boot read the uboot total size image.
Now i have no idea what to look for.
Is there any way through which we can check that processor has gone in uart/usb boot again after encountering failure during processing of first 4kb NAND Flash?
How to read the errors logged by bootROM?
Thanks & Regards,