On 4/29/20 10:12 AM, Eugeniy Paltsev wrote:
> Hi Vineet,
>
>> From: Vineet Gupta
>> Sent: Tuesday, April 28, 2020 22:46
>> To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org
>> Cc: Alexey Brodkin; linux-ker...@vger.kernel.org
>> Subject: Re: [PATCH] A
Hi Vineet,
> From: Vineet Gupta
> Sent: Tuesday, April 28, 2020 22:46
> To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org
> Cc: Alexey Brodkin; linux-ker...@vger.kernel.org
> Subject: Re: [PATCH] ARC: guard dsp early init against non ARCv2
>
> On 4/28/20 11:50 AM,
Hi Eugeniy,
Tested okay on a ARCv1.
Thanks
Angelo
Tested-by: Angelo Ribeiro
From: Jose Abreu
Date: Wed, Apr 29, 2020 at 07:19:55
> From: Eugeniy Paltsev
> Date: Apr/28/2020, 19:50:24 (UTC+00:00)
>
> > As of today we guard early DSP init code with
> > ARC_AUX_DSP_BUILD (0x7A) BCR check to
From: Eugeniy Paltsev
Date: Apr/28/2020, 19:50:24 (UTC+00:00)
> As of today we guard early DSP init code with
> ARC_AUX_DSP_BUILD (0x7A) BCR check to verify that we have
> CPU with DSP configured. However that's not enough as in
> ARCv1 CPU the same BCR (0x7A) is used for checking MUL/MAC
>
On 4/28/20 11:50 AM, Eugeniy Paltsev wrote:
> As of today we guard early DSP init code with
> ARC_AUX_DSP_BUILD (0x7A) BCR check to verify that we have
> CPU with DSP configured. However that's not enough as in
> ARCv1 CPU the same BCR (0x7A) is used for checking MUL/MAC
> instructions presence.
>
As of today we guard early DSP init code with
ARC_AUX_DSP_BUILD (0x7A) BCR check to verify that we have
CPU with DSP configured. However that's not enough as in
ARCv1 CPU the same BCR (0x7A) is used for checking MUL/MAC
instructions presence.
So, let's guard DSP early init against non ARCv2.
