[parisc-linux] 720 - some progress

[Albert Strasheim]

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Hello,

A quick glance at arch/parisc/hardware/inventory.c reveiled the
following:

long status;
unsigned int bus_id;
=2E..
status =3D pdc_model_info(&model);
bus_id =3D (model.hversion >> (4 + 7)) & 0x1f;

switch (bus_id) {
case 0x4:               /* 720, 730, 750, 735, 755 */

I don't know if all these models have the same CPU. I'm guessing not.

I also see a parisc_get_cpu_type(...) in arch/parisc/kernnel/hardware.c.
This is probably what you want.

Regards,

Albert

On Thu, 27 Sep 2001, Jurij Smakov wrote:

> > The CPU in the 720 will treat this as a priviledged instruction. The
> > changes "signal 18 -> signal 26, signal 27, signal 28" and "allow read
> > access to CR26 and CR27 for non-priviledged access" are documented as n=
ew
> > for the PA7100LC processor, so they are not available in the 720.
> >=20
> > Another thing to emulate on the old 720/50 platform...
> >=20
> > Cheers,
> > Jochen
>=20
> It does not seem so complicated... Even with my rudimentary C programming
> skills :-). I'll try to put something together. Is there a way to check
> if we are running on a 720?
>=20
> Jurij.
>=20
>=20
>=20
>=20
>=20
> _______________________________________________
> parisc-linux mailing list
> parisc-linux@lists.parisc-linux.org
> http://lists.parisc-linux.org/cgi-bin/mailman/listinfo/parisc-linux

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