Does AM335x support Cortex-A8 Performance Counter?

g.f.

Guru 15510 points

Hi,

I hava a question about Cortex-A8 Performance Counter.

The Performance Counter is integrated in Cortex-A8.
Does AM335x support this Performance Counter?

I could find a descriptions about Performance Counter in Cortex-A8 TRM
but not in AM335x TRM.

best regards,
g.f.

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Registers that are not mentioned in the AM335X TRM are either not accessible to the user, not implemented, or description is suppressed for copyright reasons.

0 g.f. over 10 years ago in reply to Biser Gatchev-XID

Guru 15510 points

Hi Biser,

Thank you for the reply.

So, is it that AM335x only supports ARM core features listed in
TRM(spruh73i.pdf) page.184 "3.1.4.2.3 ARM Core Supported Features"?

Cache / MMU register is not written in AM335x TRM but we can access through CP15.
From Cortex-A8 TRM, configuration of Performance Counter is through CP15.
So, I thought that we could configure Performance counter also.

best regards,
g.f.

0 Biser Gatchev-XID over 10 years ago in reply to g.f.

TI__Guru**** 393215 points

Probably you can access those registers too if they are enabled.

0 g.f. over 10 years ago in reply to Biser Gatchev-XID

Guru 15510 points

Thank you for the reply.
I will check either Performance Counter is available or not by AM3358EVM.

best regards,

g.f.

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Does AM335x support Cortex-A8 Performance Counter?