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AM6548: Download / Write code in Single-SPI-Flash (with UniFlash ?)

Hape
Prodigy 105 points
Part Number: AM6548
Other Parts Discussed in Thread: AM6528, UNIFLASH

Hello all,

I want to write/download code in Single-SPI-Flash (EVM's SPI NOR Flash MT25QL128ABA8E12; processor AM6548/AM6528) for development and later mass production purposes.

The UniFlash tool found via SDK/PDK obviously only supports OSPI Flash for AM65xx:
https://software-dl.ti.com/processor-sdk-rtos/esd/AM65X/08_00_00_12/exports/docs/pdk_am65xx_08_00_00_36/docs/userguide/am65xx/board/uniflash.html

For the AM335x, UniFlash also supports Single-SPI-Flash (SPI NOR Flash on AM335x EVM is the same: MT25QL128ABA8E12):
https://software-dl.ti.com/processor-sdk-rtos/esd/docs/latest/rtos/index_board.html

Is it true that UniFlash does not support Single-SPI-Flash for AM65xx?
Would it be possible to make some source code changes in the UniFlash processor firmware part (board utilities) to adapt it to Single-SPI-Flash for AM65xx and rebuild that part?
If so, what source files should I check?

Or is there an easier way to write to the SPI flash via the CCS/XDS110 debugger?

Thanks in advance for your help.
Best regards

Hape