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Re: NanoNote debootstrap debugging

On Friday 26 March 2010 16:51:15 Phil Endecott wrote:
> Florian Fainelli wrote:
> > On Friday 26 March 2010 13:06:01 Phil Endecott wrote:
> >> yajin wrote:
> >> > The nano note's CPU does NOT have a fp. So it needs the kernel to
> >> > emulate the fp instruction.
> >>
> >> OK, thanks.  But presumably the OpenWRT kernel is already doing that
> >> because the OpenWRT binaries run.  Is there more than one FP emulation
> >> mode, or something?  (Any docs about this?)
> >
> > The OpenWrt kernel disables the in-kernel FPU emulator and produces
> > software- floating point toolchains (-msoft-float).
> Thanks, I guessed it would be something like that.  So presumably I
> need to build a kernel (which is not fundamentally difficult, but I was
> hoping to avoid having to make a cross-toolchain) - unless there is a
> pre-built kernel somewhere that might work for this device?

There are OpenWrt binaries for this device pre-built [1], but they include the 
kernel plus rootfilesystem, so you might want to compile a kernel of your own 
with the in-kernel FPU emulator turned on.

[1]: http://downloads.openwrt.org/snapshots/trunk/xburst/

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