linux-kernel - Re: [PATCH v3 6/8] firmware: qcom: scm: add modparam to control QSEECOM enablement

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Message-ID: <cea1e9b3-ab14-4383-a710-50bbaa509f1d@oss.qualcomm.com>
Date: Tue, 24 Jun 2025 14:56:55 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Maximilian Luz <luzmaximilian@...il.com>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>, Ard Biesheuvel <ardb@...nel.org>
Cc: Johan Hovold <johan@...nel.org>, Steev Klimaszewski <steev@...i.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-efi@...r.kernel.org,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: Re: [PATCH v3 6/8] firmware: qcom: scm: add modparam to control
 QSEECOM enablement

On 6/24/25 4:13 AM, Dmitry Baryshkov wrote:
> From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> 
> In preparation to enabling QSEECOM for the platforms rather than
> individual machines provide a mechanism for the user to override default
> selection. Allow users to use qcom_scm.qseecom modparam.
> 
> Setting it to 'force' will enable QSEECOM even if it disabled or not
> handled by the allowlist.
> 
> Setting it to 'off' will forcibly disable the QSEECOM interface,
> allowing incompatible machines to function.
> 
> Setting it to 'roefivars' will enable the QSEECOM interface, making UEFI
> variables read-only.
> 
> All other values mean 'auto', trusting the allowlist in the module.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

Konrad