Re: [PATCHv1 3/4] dt-bindings: fpga: add authenticate-fpga-config property
From: Richard Gong
Date: Mon Nov 16 2020 - 08:54:01 EST
Hi Yilun,
On 11/15/20 8:47 PM, Xu Yilun wrote:
On Sun, Nov 15, 2020 at 11:21:06AM -0800, Moritz Fischer wrote:
Hi Richard,
On Thu, Nov 12, 2020 at 12:06:42PM -0600, richard.gong@xxxxxxxxxxxxxxx wrote:
From: Richard Gong <richard.gong@xxxxxxxxx>
Add authenticate-fpga-config property for FPGA bitstream authentication.
Signed-off-by: Richard Gong <richard.gong@xxxxxxxxx>
---
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..7a512bc 100644
--- a/Documentation/devicetree/bindings/fpga/fpga-region.txt
+++ b/Documentation/devicetree/bindings/fpga/fpga-region.txt
@@ -187,6 +187,7 @@ Optional properties:
- external-fpga-config : boolean, set if the FPGA has already been configured
prior to OS boot up.
- encrypted-fpga-config : boolean, set if the bitstream is encrypted
+- authenticate-fpga-config : boolean, set if do bitstream authentication
It is unclear to me from the description whether this entails
authentication + reconfiguration or just authentication.
If the latter is the case this should probably be described as such.
If it is just authentication, do we still need to disable bridges in
fpga_region_program_fpga?
Yes.
Except for the actual configuration of the device, the authentication
feature is the same as FPGA configuration.
Regards,
Richard
I'm wondering if the FPGA functionalities could still be working when
the authenticating is ongoing, or when the authenticating is failed.
Thanks,
Yilun
- region-unfreeze-timeout-us : The maximum time in microseconds to wait for
bridges to successfully become enabled after the region has been
programmed.
--
2.7.4
Thanks