[C6747] Are there any problem with my boot mode?

Angus Ning

I am using c6747, and choose spi0 flash(M25P16) boot mode. BOOT pin state is OK.

I'm developing a bootloader, and it seems that the bootloader doesn't work. So I reduce my code, just leave one following ASM file:

.global Init
.text
Init:
nop 5
idle
.end

The project generate a .bin file with the tool AISgen for D800K001.
I configured PLL using AISgen tool, and have checked that the DSP ROM is D800K001.
I burn this .bin file into flash, and the data in flash is verified.
But when power on, the DSP can't load data in flash automatically.
I've tried to change the order:0x41504954 and 0x54495041, nether of them worked.

Could someone tell me if there are any steps i have missed?

thank you very much.

over 16 years ago

0 Mariana over 16 years ago

TI__Mastermind 24340 points

Hi,

Have you seen this page?

http://tiexpressdsp.com/index.php/Flashing_the_C6747_EVM

It has step by step the procedure to implement the spi flash boot loader for C6747.

0 Angus Ning over 16 years ago in reply to Mariana

Prodigy 50 points

Mariana,

Thank you for your reply.

I have read this article, and I have operated it step by step.

But I am using a custom board, I'm not sure that spiflash_writer is suitable for my board.

oh, btw, when i connect my emulator, I find that the BOOTCFG register is always 0x00000000.

but the status of the ball I tested with oscillograph is 1 0 1 0.

0 Mariana over 16 years ago in reply to Angus Ning

TI__Mastermind 24340 points

Angus,

The spi flash writer is open source. You can find the project and the source file inside the folders at:

C:\C674x_dsp_1_00_00_07\dsp_spi_flash_writer\ccsv3.3

So you can adapt it to your custom board if needed.

0 Angus Ning over 16 years ago in reply to Mariana

Prodigy 50 points

Mariana,

Thank you very much. I think it's the hardware problem. We have made another same board, and find that BOOTCFG register is a non-zero value on the new board. But the former board is still zero.

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[C6747] Are there any problem with my boot mode?