[U-Boot] [PATCH 10/13] sunxi: Make the fastboot buffer larger

[Tom Rini]

On Tue, Sep 01, 2015 at 10:44:58AM +0300, Siarhei Siamashka wrote:

> On Tue, 01 Sep 2015 08:22:04 +0100
> Ian Campbell <ijc at hellion.org.uk> wrote:
> 
> > On Mon, 2015-08-31 at 16:46 +0200, Maxime Ripard wrote:
> > > When using fastboot and flashing a larger image such as the main partition
> > > of a system, the current 32MB limit for the buffer is quite small.
> > 
> > (Apart from rooting/rescuing the odd phone I'm completely unfamiliar
> > with fastboot, so sorry if this is all obvious).
> >  
> > The main partition of a system these days is measured in GB, I think.
> > So why does going from 32MB to 256MB for the buffer make a useful
> > difference?
> > 
> > Is there some enormous per-buffer overhead which needs to be amortised?
> > Or is something else going on?
> > 
> > IOW what is the practical impact of this change?
> 
> I don't know what are Maxime's plans. But if fastboot is fast and
> can load the kernel and initrd to the device over USB, then it
> becomes a useful alternative to using FEL for loading kernel.

This is in fact a common use case for development.  Other platforms /
SoCs do use fastboot in non-Android development as how to pass in a new
testing kernel / initrd / device tree combo.

-- 
Tom
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