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List:       linux-fpga
Subject:    Re: [PATCHv3 5/6] dt-bindings: fpga: add authenticate-fpga-config property
From:       Richard Gong <richard.gong () linux ! intel ! com>
Date:       2021-01-26 13:58:23
Message-ID: ee3546a4-91e4-12d2-bd86-acf5e2683a82 () linux ! intel ! com
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On 1/25/21 11:05 PM, Moritz Fischer wrote:
> On Mon, Jan 25, 2021 at 02:56:27PM -0600, richard.gong@linux.intel.com wrote:
> > From: Richard Gong <richard.gong@intel.com>
> > 
> > Add authenticate-fpga-config property for FPGA bitstream authentication,
> > which makes sure a signed bitstream has valid signatures.
> > 
> > Signed-off-by: Richard Gong <richard.gong@intel.com>
> > ---
> > v3: no change
> > v2: put authenticate-fpga-config above partial-fpga-config
> > update commit messages
> > ---
> > Documentation/devicetree/bindings/fpga/fpga-region.txt | 1 +
> > 1 file changed, 1 insertion(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/fpga/fpga-region.txt \
> > b/Documentation/devicetree/bindings/fpga/fpga-region.txt index e811cf8..d0d3234 \
> >                 100644
> > --- a/Documentation/devicetree/bindings/fpga/fpga-region.txt
> > +++ b/Documentation/devicetree/bindings/fpga/fpga-region.txt
> > @@ -182,6 +182,7 @@ Optional properties:
> > 	This property is optional if the FPGA Manager handles the bridges.
> > If the fpga-region is  the child of a fpga-bridge, the list should not
> > contain the parent bridge.
> > +- authenticate-fpga-config : boolean, set if do bitstream authentication only.
> I don't understand. Can I do authenticate-fpga-config AND
> partial-fpga-config?

Yes, but not simultaneously.

Flag authenticate-fpga-config is used to first check the integrity of 
the bitstream. If the authentication passes, the user can perform a full 
or partial configuration to actually configure the bistream to device.

> > - partial-fpga-config : boolean, set if partial reconfiguration is to be done,
> > 	otherwise full reconfiguration is done.
> > - external-fpga-config : boolean, set if the FPGA has already been configured
> > -- 
> > 2.7.4
> > 
> Please clarify,
> 
> Moritz
> 
Regards,
Richard


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