AM3358: NAND Booting

Gaurav Aggarwal

Part Number: AM3358

Hi!

I am using AM3358 on custom board and RTOS SDK 5_03_00_07. I have flashed the NAND Bootloader and Application binary to offset 0x00000 and 0x80000 respectively using NAND Flash writer. I configured SYS Boot pins as 0100000000100010b. According to this 3rd priority is NAND after UART time out but processor is not booting from NAND and it is printing CCCCCC on hyperterminal. I gave image address header 0x402f0400 to NAND Bootlader and 0x80000000 to application binary.

I tried with image header 0x402f0000 also but same problem.

In debug mode NAND Bootloader code is copying the Application binary to DDR3 and control is coming to application and it is working absolutely fine in debug mode.

How can I debug whether RBL is copying to NAND bootloader to internal RAM or not?

How can I debug this issue?

Regards,

Gaurav

over 3 years ago

0 Frank Livingston over 3 years ago

TI__Mastermind 28788 points

HI Gaurav,

Is this a new issue, or are you posting yet again on the same issue? Please don't add a new post every day on the same or related issues. I'll get to this as soon as possible.

Please add any new information to one of the three existing threads you already have open.

https://e2e.ti.com/support/processors/f/791/t/932225

https://e2e.ti.com/support/processors/f/791/t/932708

https://e2e.ti.com/support/processors/f/791/t/933102

Regards,
Frank

0 Gaurav Aggarwal over 3 years ago in reply to Frank Livingston

Expert 2935 points

Ok Frank,

This is a new issue. Anyway I will add information in other threads from nowonwards.

Regards,

Gaurav

0 Frank Livingston over 3 years ago in reply to Gaurav Aggarwal

TI__Mastermind 28788 points

Gaurav,

Thanks much for confirming this is a new issue.

Regards,
Frank

0 Gaurav Aggarwal over 3 years ago in reply to Frank Livingston

Expert 2935 points

Frank,

I am using AM3358BGCZA80EP. Can you give me little clarity on high secure device and GP device. Is it HS or GP?

HS and GP thing is from your side or our size?

Still processor is not booting from NAND.

Regards,

Gaurav

0 Frank Livingston over 3 years ago

TI__Mastermind 28788 points

Hi Gaurav,

I don't see anything wrong with what you're doing. Please see this documentation for suggestions on debugging boot issues:

Regards,
Frank

0 Gaurav Aggarwal over 3 years ago in reply to Frank Livingston

Expert 2935 points

Frank,

Can it be a hardware issue?

Regards,

Gaurav

0 Frank Livingston over 3 years ago in reply to Gaurav Aggarwal

TI__Mastermind 28788 points

Hi Gaurav,

Possibly, but I'm more inclined to think it's a software issue because boot works for the debug mode build of the bootloader.

For bootloader hardware debug tips, please see these docs: https://software-dl.ti.com/processor-sdk-rtos/esd/docs/06_03_00_106/AM335X/rtos/index_Foundational_Components.html#hardware-debug-steps

Regards,
Frank

0 Gaurav Aggarwal over 3 years ago in reply to Frank Livingston

Expert 2935 points

Hi! Frank,

I made SYSBOOT[4:0]=00010b. In this configuration, RBL code is printing CCCCC and UART time out doesn't happened. Why?

Same thing happened with SYSBOOT[4:0}=10010b configuration. As I told you it is printing CCCCC continuosly and UART time out does't happened. UART time out should be execute and it should stop printing CCCC, right?

But, today I made SYSBOOT[4::0] = 10000b then in this RBL is printing is CCC 8 times. I thing UART time out happened in this. I am not sure.

Again I changed SYSBOOT[4:0] = 10010b then UART time doesn't happened?

Does the SYSBOOT[5] contributes to NAND Booting?

Regards,

Gaurav

0 Gaurav Aggarwal over 3 years ago in reply to Gaurav Aggarwal

Expert 2935 points

Frank,

If you don't mind, can you come on remote please at your convenient time and check this booting issue.

Regards,

Gaurav

0 Frank Livingston over 3 years ago in reply to Gaurav Aggarwal

TI__Mastermind 28788 points

Hi Gaurav,

Sorry for the late reply. I won't be able to join a remote session.

I see you've opened another e2e thread on your NAND boot issues. I'll close this thread and respond there.

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AM3358: NAND Booting