linux-kernel - Re: [PATCHv1 0/4] Extend FPGA manager and region drivers for

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Date:   Mon, 16 Nov 2020 08:02:13 -0600
From:   Richard Gong <richard.gong@...ux.intel.com>
To:     Xu Yilun <yilun.xu@...el.com>
Cc:     mdf@...nel.org, trix@...hat.com, linux-fpga@...r.kernel.org,
        linux-kernel@...r.kernel.org, dinguyen@...nel.org,
        sridhar.rajagopal@...el.com, Richard Gong <richard.gong@...el.com>
Subject: Re: [PATCHv1 0/4] Extend FPGA manager and region drivers for


Hi Yilun,

On 11/15/20 8:41 PM, Xu Yilun wrote:
> On Thu, Nov 12, 2020 at 12:06:39PM -0600, richard.gong@...ux.intel.com wrote:
>> From: Richard Gong <richard.gong@...el.com>
>>
>> The customer wants to verify that a FPGA bitstream can be started properly
>> before saving the bitstream to the QSPI flash memory.
>>
>> The customer sends the bitstream via FPGA framework and overlay, the
>> firmware will authenticate the bitstream but not program the bitstream to
>> device. If the authentication passes, the bitstream will be programmed into
>> QSPI flash and will be expected to boot without issues.
> 
> So when we have successfully reprogramed region with the
> FPGA_MGR_BITSTREM_AUTHENTICATION flag, the bitstream in QSPI flash is
> updated but not activated, we need an FPGA reboot to activate it, is it?
> 

Correct. If the authentication passes, the bitstream will be programmed 
into QSPI flash and will be expected to boot without issues.

> Thanks,
> Yilun
> 
>>
>> Extend FPGA manager and region drivers to support the bitstream
>> authentication feature.
>>
>> Richard Gong (4):
>>    fpga: fpga-mgr: add FPGA_MGR_BITSTREM_AUTHENTICATION flag
>>    fpga: of-fpga-region: add authenticate-fpga-config property
>>    dt-bindings: fpga: add authenticate-fpga-config property
>>    fpga: stratix10-soc: entend driver for bitstream authentication
>>
>>   Documentation/devicetree/bindings/fpga/fpga-region.txt | 1 +
>>   drivers/fpga/of-fpga-region.c                          | 3 +++
>>   drivers/fpga/stratix10-soc.c                           | 5 ++++-
>>   include/linux/fpga/fpga-mgr.h                          | 3 +++
>>   4 files changed, 11 insertions(+), 1 deletion(-)
>>
>> -- 
>> 2.7.4