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 , 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.