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[23.128.96.18]) by mx.google.com with ESMTP id j12si12570084edy.584.2020.11.16.05.41.35; Mon, 16 Nov 2020 05:41:58 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729184AbgKPNiW (ORCPT + 99 others); Mon, 16 Nov 2020 08:38:22 -0500 Received: from mga02.intel.com ([134.134.136.20]:20910 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726615AbgKPNiV (ORCPT ); Mon, 16 Nov 2020 08:38:21 -0500 IronPort-SDR: AikqHJ4gHng/+fdMxr+inA8gMbtsFFjTnXuKMyeZz4ebpvo5QLY6ZtGFtX3bK+LYyQVFBfovJP EUqnsS3DyWAw== X-IronPort-AV: E=McAfee;i="6000,8403,9806"; a="157769651" X-IronPort-AV: E=Sophos;i="5.77,482,1596524400"; d="scan'208";a="157769651" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Nov 2020 05:38:12 -0800 IronPort-SDR: S2+KsB20Cjkshn4UCKQQQApZ/NP0Z5e0DKikePgE5ip3p959q8kMVw9322tVRbGjEb8WTmz9Z4 gPA8bu8ZA2bg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,482,1596524400"; d="scan'208";a="531848711" Received: from marshy.an.intel.com (HELO [10.122.105.143]) ([10.122.105.143]) by fmsmga006.fm.intel.com with ESMTP; 16 Nov 2020 05:38:12 -0800 Subject: Re: [PATCHv1 3/4] dt-bindings: fpga: add authenticate-fpga-config property To: Moritz Fischer Cc: trix@redhat.com, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org, dinguyen@kernel.org, sridhar.rajagopal@intel.com, Richard Gong References: <1605204403-6663-1-git-send-email-richard.gong@linux.intel.com> <1605204403-6663-4-git-send-email-richard.gong@linux.intel.com> <20201115192106.GB283592@epycbox.lan> From: Richard Gong Message-ID: <083f5b49-5519-e15a-a16f-c0fc38aba15b@linux.intel.com> Date: Mon, 16 Nov 2020 07:59:13 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201115192106.GB283592@epycbox.lan> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Moritz, On 11/15/20 1:21 PM, Moritz Fischer wrote: > Hi Richard, > > On Thu, Nov 12, 2020 at 12:06:42PM -0600, richard.gong@linux.intel.com wrote: >> From: Richard Gong >> >> Add authenticate-fpga-config property for FPGA bitstream authentication. >> >> Signed-off-by: Richard Gong >> --- >> 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. It is for authentication only, just make the signed bitstream has the valid signatures. Regards, Richard > >> - 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 >