[coreboot] Intel: How to share `tsc_freq.c` to select `UDELAY_TSC`

[Paul Menzel]

Dear Aaron,


Am Mittwoch, den 08.05.2013, 08:18 -0500 schrieb Aaron Durbin:

> I think what you'll find is that determining this is cpu specific.

understood.

> I'm fairly sure it's not worth trying to generalize it.  The
> implementations are already associated with the chipset/cpu code. Why
> move them?

Because there would be a lot of copies. 19 if I am not mistaken.

        $ ls src/cpu/intel/
        car             model_65x  model_f2x         socket_mFCPGA478
        ep80579         model_67x  model_f3x         socket_mPGA478
        fit             model_68x  model_f4x         socket_mPGA479M
        haswell         model_69x  slot_1            socket_mPGA603
        hyperthreading  model_6bx  slot_2            socket_mPGA604
        Kconfig         model_6dx  socket_441        socket_PGA370
        Makefile.inc    model_6ex  socket_BGA956     socket_rPGA989
        microcode       model_6fx  socket_FC_PGA370  speedstep
        model_1067x     model_6xx  socket_LGA771     thermal_monitoring
        model_106cx     model_f0x  socket_LGA775     turbo
        model_206ax     model_f1x  socket_mFCBGA479A989

I guess that is also the reason, why `udelay.c` was put into the
northbridge code beforehand?

For example the `udelay.c` in Sandy Bridge could use the `tsc_freq.c`
from Haswell.


Thanks,

Paul
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