Bug in a certain serial of DM6446: RBL cannot run ubl in nand

Jianjun Zhang

My dm6446 custum board cannot boot from NAND, but another evm is ok . The reason was found after read the disassemble code:

when compare the size of ubl with 14k:

the good one:(RBL1-bin from $NA-06A15FW TMS320DM6446AZWTA)

52f4: e0000c96    mul r0, r6, ip
52f8: e3500b0e    cmp r0, #14336 ; 0x3800
52fc: 8a000080    bhi 0x5504

failed one:(RBL-2.bin from $7C-ICA06HW TM320DM6446BZWT8)
5a4c: e0000a9c    mul r0, ip, sl
5a50: e3500b0e    cmp r0, #14336 ; 0x3800
5a54: 2a000031    bcs 0x5b20;

Obviously bcs is wrong.

What can tell from the SN? ( $NA-06A15FW ,$7C-ICA06HW)

Best Regards,

Zhang Jianjun

2235.rbl.rar

over 12 years ago

0 Jianjun Zhang over 12 years ago

Intellectual 460 points

can anyone confirm this bug? And how to read the SN like $NA-06A15FW ,$7C-ICA06HW?

0 nuoman tian over 12 years ago

Prodigy 10 points

3247.TMS320DM6446 594 MHz to 810 MHz Migration Guide.pdf

Hi, Zhang:

There is some different from DM6446azwta to DM6446BZWT8.You need to change you hardware power and Correct Pll1 folow the attachment.

0 Jianjun Zhang over 12 years ago in reply to nuoman tian

Intellectual 460 points

DM6446BZWT8 is running at 594MHz, no need to change core power to 1.3V.

810MHz, 1.3V also tried.

The point is the wrong instruction "bcs" cause progrom exit !

0 Grant Fordham over 11 years ago in reply to Jianjun Zhang

Intellectual 260 points

Hello Jianjun Zhang,

Were you able to resolve this issue? I'm seeing similar problems with nand boot using DM6446BZWT8 on a system which previously could boot fine with a DM6443AZWT.

Thanks,

Grant

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Bug in a certain serial of DM6446: RBL cannot run ubl in nand