| Message ID | 1362439299-29617-1-git-send-email-sboyd@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Stephen, Stepan, On Mon, Mar 04, 2013 at 11:21:39PM +0000, Stephen Boyd wrote: > From: Stepan Moskovchenko <stepanm@codeaurora.org> > > Add processor info for the Qualcomm, Inc. Krait family of > processors, to use the generic ARMv7 initialisation > procedure but explicitly enable the IDIV hardware > capability flag. > > Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org> > Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> > --- > arch/arm/mm/proc-v7.S | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S > index 3a3c015..81adeb3 100644 > --- a/arch/arm/mm/proc-v7.S > +++ b/arch/arm/mm/proc-v7.S > @@ -434,6 +434,16 @@ __v7_ca15mp_proc_info: > .size __v7_ca15mp_proc_info, . - __v7_ca15mp_proc_info > > /* > + * Qualcomm Inc. Krait processors. > + */ > + .type __krait_proc_info, #object > +__krait_proc_info: > + .long 0x510f0400 @ Required ID value > + .long 0xff0ffc00 @ Mask for ID > + __v7_proc __v7_setup, hwcaps = HWCAP_IDIV I was looking at this the other day and wondered whether we could set HWCAP_IDIV in __v7_setup, depending on ID_ISAR0[27:24]. I can't immediately think why that would be difficult, but similarly there may well be a reason why we assign it like this. Fancy taking a look? Will
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 3a3c015..81adeb3 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -434,6 +434,16 @@ __v7_ca15mp_proc_info: .size __v7_ca15mp_proc_info, . - __v7_ca15mp_proc_info /* + * Qualcomm Inc. Krait processors. + */ + .type __krait_proc_info, #object +__krait_proc_info: + .long 0x510f0400 @ Required ID value + .long 0xff0ffc00 @ Mask for ID + __v7_proc __v7_setup, hwcaps = HWCAP_IDIV + .size __krait_proc_info, . - __krait_proc_info + + /* * Match any ARMv7 processor core. */ .type __v7_proc_info, #object