Booting from C6748

izzet ozcelik

I have a problem with booting from SPI1 flash in my custom board.

I convert my *.out to Tektronik hexadecimal format using hex6x.exe .

Then write this hexadecimal data on to SPI flash. I verfiy the write by rereading the flash. So writing my hexadecimal code to flash it Ok.

Then, from boot options I selec SPI1 Flash. But no code seems to be loaded. I view the signals SPI1_SIMO, SPI1_SOMI, SPI1_CLK with oscilloscope but there

does not seem to be anything going on there.

My question: is my procedure correct.

I donot convert my *.out file to AIS image and hence no magic command is added to the begining of my flash image.

DOes this mean that bootoader does not see any code that is to be loaded to the RAm.

Best regards

izzet

over 13 years ago

0 RandyP over 13 years ago

TI__Guru* 84110 points

Izzet,

Since you are not seeing any of the SPI1 signal pins toggling, the DSP is not trying to access the SPI Flash so it never sees anything you have written there, yet.

You will want to check the BOOT pins to make sure they are set correctly.

Can you get the device to work under emulation with the Emulation Debug boot mode selected?

Regards,
RandyP

0 Rahul Prabhu over 13 years ago in reply to RandyP

TI__Guru** 116780 points

Izzet,

Please check the information that Randy has recommended.

In addition to that I wish to inform you that merely converting .out to hex format will not help to boot the device. You need to use the AISGen tool to convert the .out file to a .ais or .bin file. The ROM code can only recognize an AIS image and not any hex formated image.

Download AISGEn tool from here:

http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=sprab41d&fileType=zip

Refer Bootloader Application notes to understand how to use the tool and the following wikis for more details on tools and boot process.

http://processors.wiki.ti.com/index.php/Category:OMAPL1x_Topic_Boot

Regards,

Rahul

Processors

Processors forum

Booting from C6748