[U-Boot] FAT filesystem support on SPI flash

[Vasili Galka]

Hi,
	
On our system, we are interested in keeping all files, including the OS image and U-Boot second stage on FAT filesystem residing on a SPI flash.

I have not found existing U-Boot support for such functionality. Have I missed it?

In any case, I'm willing to implement this, do you see it reasonable incorporating such code into U-Boot? (if it passes review of course)

I note about design: As our chip (TI's AM335x) does not support direct boot from FAT stored on SPI, I plan reserving section at the beginning of SPI flash for the first stage boot loader and having the filesystem after it.

Best,
Vasili

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