linux-kernel - Re: [PATCH v7 0/8] Add new driver for WCSS secure PIL loading

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Message-ID:
 <DS7PR19MB88836ABB87B9858CB8EBCEFD9DABA@DS7PR19MB8883.namprd19.prod.outlook.com>
Date: Wed, 17 Dec 2025 15:01:44 +0400
From: George Moussalem <george.moussalem@...look.com>
To: Varadarajan Narayanan <varadarajan.narayanan@....qualcomm.com>
Cc: Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>,
 Mathieu Poirier <mathieu.poirier@...aro.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Manikanta Mylavarapu <quic_mmanikan@...cinc.com>,
 Jassi Brar <jassisinghbrar@...il.com>, linux-arm-msm@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-remoteproc@...r.kernel.org,
 devicetree@...r.kernel.org, Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
 Gokul Sriram Palanisamy <gokul.sriram.p@....qualcomm.com>,
 Gokul Sriram Palanisamy <quic_gokulsri@...cinc.com>,
 Vignesh Viswanathan <vignesh.viswanathan@....qualcomm.com>,
 Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
 Krzysztof Kozlowski <krzk@...nel.org>
Subject: Re: [PATCH v7 0/8] Add new driver for WCSS secure PIL loading



On 12/17/25 14:16, Varadarajan Narayanan wrote:
> Dmitry/George,
> 
>> Imported from f20250417061245.497803-1-gokul.sriram.p@....qualcomm.com
>> I've resumed Gokul's work as the last submission dates back April 2025.
> 
> Thanks for following up on this.
> 
>> This series depends on Sricharan's tmel-qmp mailbox driver series v4 [1].
> 
> Since Sricharan's tmel-qmp driver is stuck, this patch series will not
> get merged. Shall I drop the ipq5424 related patches and portions of
> code in the driver and post a new version so that other SoCs are
> unblocked. Please let me know.

That would be helpful, yes, so wifi can be enabled on ipq5018, ipq5332,
and ipq9574. Sricharan can always submit a patch down the line for
adding ipq5254 support. Are you in a position to timely post a v8 or
would you like me to drop ipq5424 support?

> 
> Thanks
> Varada
> 
>> - Secure PIL is signed, split firmware images which only TrustZone (TZ)
>>   can authenticate and load. Linux kernel will send a request to TZ to
>>   authenticate and load the PIL images.
>>
>> - When secure PIL support was added to the existing wcss PIL driver
>>   earlier in [2], Bjorn suggested not to overload the existing WCSS
>>   rproc driver, instead post a new driver for PAS based IPQ WCSS driver.
>>   This series adds a new secure PIL driver for the same.
>>
>> - Also adds changes to scm to pass metadata size as required for IPQ5332,
>>   reposted from [3].
>>
>> [1]
>> https://patchwork.kernel.org/project/linux-arm-msm/cover/20250327181750.3733881-1-quic_srichara@quicinc.com/
>>
>> [2]
>> https://patchwork.kernel.org/project/linux-arm-msm/patch/1611984013-10201-3-git-send-email-gokulsri@codeaurora.org/
>>
>> [3]
>> https://patchwork.kernel.org/project/linux-arm-msm/patch/20240820055618.267554-6-quic_gokulsri@quicinc.com/
> 
> [ . . . ]