AM3894: loading u-boot using CCS 5.5

Simone Cilli1

Hello,

I have a problem with my AM3894 processor. I'm loading an u-boot in memory at location 0x81000000 and I set the PC to the same address.

When I click start, the PC move to 0x00020080 and stay there forever.

The same process works fine in other boards.

What is about 0x00020080 location? Any idea?

Thanks,

Simone

over 11 years ago

0 Biser Gatchev-XID over 11 years ago

TI__Guru**** 393215 points

Moving this to the AM389X forum.

0 Pavel Botev over 11 years ago

TI__Guru**** 170625 points

Simone,

See if the below links will be in help:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/331762.aspx

http://processors.wiki.ti.com/index.php/Sitara_Linux_Training:_uboot_linux_debug_with_ccsv5

Regards,
Pavel

0 Simone Cilli1 over 11 years ago in reply to Pavel Botev

Prodigy 110 points

I'm still on the same issue. I got this message:

*** Warning - bad CRC or NAND, using default environment

I tried to set a portion of memory to 0xFF but when I read it ,using CCS Memory Browser, I found some incorrect byte. Could it be a visualizzation problem by CCS? Do I have an HW problem?

Thank you for your help!

Simone

0 Pavel Botev over 11 years ago in reply to Simone Cilli1

TI__Guru**** 170625 points

Simone,

Simone Cilli1 said:

I got this message:

*** Warning - bad CRC or NAND, using default environment

Refer to the below links for info regarding this message:

http://e2e.ti.com/support/dsp/omap_applications_processors/f/447/t/161311.aspx

http://www.denx.de/wiki/view/DULG/WarningBadCRCUsingDefaultEnvironment

Simone Cilli1 said:
I tried to set a portion of memory to 0xFF but when I read it ,using CCS Memory Browser, I found some incorrect byte. Could it be a visualizzation problem by CCS? Do I have an HW problem?

Are you using DM816x/AM389x EVM or AM389x based custom board?

Regards,
Pavel

0 Simone Cilli1 over 11 years ago in reply to Pavel Botev

Prodigy 110 points

I'm using a AM389x based custom board.

Simone

0 Pavel Botev over 11 years ago in reply to Simone Cilli1

TI__Guru**** 170625 points

Simone,

Simone Cilli1 said:
I tried to set a portion of memory to 0xFF but when I read it ,using CCS Memory Browser, I found some incorrect byte. Could it be a visualizzation problem by CCS? Do I have an HW problem?

Could you please provide me the exact steps? I will try this on the DM816x/AM389x EVM.

Regards,
Pavel

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AM3894: loading u-boot using CCS 5.5