C5504 Flash boot (part of the SW running from Flash)

Hi,

It's possible. Please follow through http://processors.wiki.ti.com/index.php/C5515_Boot-Image_Programmer.

Regards,

Hyun

Yes, it is possible, as long as you use NOR flash. You need to skip on-flash sections when creating the boot image, and flash those sections separately.

Cheers,

Cong-Van

Cong-Van,

How can I skip the on-flash section when I create the boot image?

Thanks,

HR

 hex55 has the option "-exclude" to do so. You may need to read more about hex55 in "TMS320C55x Assembly Language Tools User's Guide".

Cheers,

Cong-Van 

Cong-Van,

Great ! Thanks,

HR

Perhaps there is no need for me to say the following, but none of this will work with serial Flash.

Brian,

This is a NOR flash, 

Is there a way to extract just the code I want to put in the flash?

Thanks,

HR

Brian Willoughby said:

Perhaps there is no need for me to say the following, but none of this will work with serial Flash.

Even NAND flash, which is "parallel" flash, does not work, too. The program fetcher only loads code from synchronous memories (e.g. NOR flash, SDRAM, SRAM).

@HRi: you can use hex55 with SECTIONS directive.

Cong-Van,

I want to set one section in the Flash without the boot to touch it, I don't think the SECTIONS will help,

Thanks,

HR

HRi,

"If you use a SECTIONS directive, the utility converts only the sections that you list in the directive and ignores all other sections in the COFF file."

You need to run hex55 twice:

1- Creating boot image: run hex55 (with -boot option) and use -exclude to skip on-flash sections.

2- Creating "on-flash" image: run hex55 (without -boot option) and use SECTIONS directive to convert only on-flash sections.

Then you need to combine 2 .bin files with appropriate padding, then burn to NOR flash.

Cheers,

Cong-Van

Cong-Van,

OK, Thanks !

HR