[coreboot] CarPC project, with MB899 MB

Peter Stuge peter at stuge.se
Thu Oct 14 01:06:22 CEST 2010

Peter Stuge wrote:
> > If my goal is the fastest boot time possible, while still
> > supporting the basic system, would going to a Linux payload be the
> > way to go?
> Maybe, but maybe not. If you are using flash media which does not
> have a spin-up delay then it might actually be faster for another
> payload to load the kernel off the drive using DMA.

The point being that the boot flash chip is slower than DMA access
to an ATA flash drive, so loading a smaller bootloader from the boot
flash plus the larger kernel from ATA flash is a net win, because
loading the kernel from boot flash might be somewhat slow.

I'm afraid FILO can't do ATA DMA. Would be great if it did.


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