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SubjectRe: [PATCH] ARM: proc: Add Krait proc info
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


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