On Sun, Feb 23, 2014 at 01:37:53PM +0000, Vasili Galka wrote: > 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.
The high level suggestion is to review your design decision as this seems rather questionable. Today our FAT code doesn't work directly on flash, but I imagine a day or two of hacking might allow it to work. But FAT isn't designed to be on flash directly and you really want a good reason to not be using a flash filesystem on SPI. -- Tom
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