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DRA829V: About the rules when writing a program in flash

Part Number: DRA829V
Other Parts Discussed in Thread: UNIFLASH

Hi!

I want to know the rules when writing SBL and appimage to ospi flash.

We plan to write programs in ospi flash without using your uniflash.
The reason is that the custom infrastructure we created doesn't support uart boot, so we can't use the uniflash procedure in the SDK example.

When I wrote SBL to ospi flash with uniflash using EVM, I saw a value of "1A" at the end of SBL.
Is this a checksum or something?
Also, could you please tell me if there are other rules for writing programs to flash?

The SBL used at this time is as follows.
\ ti-processor-sdk-rtos-j721e-evm-08_01_00_11 \ ppk_jacinto_08_01_00_33 \ packages \ ti \ boot \ sbl \ binary \ j721e_evm \ ospi \ bin
sbl_ospi_img_mcu1_0_release.tiimage

I would appreciate your help. Thanks.