SPI Flash Boot

Hiroyasu Tazawa1

Guru 12350 points

Hi, Everyone

I need your help.
We think SPI Flash Boot of AM335x.

Can you tell me data format to be written to Flash Memory.

Best Regards
Hiroyasu

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

Hi,

Section 26.1.7.6.3 of the AM335X TRM Rev. L states:

"As the A8 is a little-endian processor, and SPI operates in a big-endian format, this means that while writing to the flash, care needs to be taken to write the image in a big-endian format. This way we can avoid doing the endian conversion at boot time, thus improving boot performance."

0 Hiroyasu Tazawa1 over 9 years ago in reply to Biser Gatchev-XID

Guru 12350 points

Hi, Biser

Thank you for your reply.
Actually I want to know header(file format) information.
Do you have it ?

Best Regards
Hiroyasu

0 Biser Gatchev-XID over 9 years ago in reply to Hiroyasu Tazawa1

TI__Guru**** 393215 points

This is described in section 26.1.9 of the AM335X TRM Rev. L. The GP Header can be seen in Table 26-39 (look at the "Non-XIP Device Offset" column".

0 Hiroyasu Tazawa1 over 9 years ago in reply to Biser Gatchev-XID

Guru 12350 points

Hi, Biser

Thank you! I got it.

Best Regards
Hiroyasu

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SPI Flash Boot