linux-kernel - Re: [PATCH V4 1/2] dt-bindings: mailbox: Document qcom,ipq5424-tmel

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <cbcf0265-1e62-4c5f-832d-68c15ff21d70@quicinc.com>
Date: Tue, 1 Apr 2025 14:03:00 +0530
From: Sricharan Ramabadhran <quic_srichara@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
CC: <jassisinghbrar@...il.com>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <andersson@...nel.org>, <konradybcio@...nel.org>,
        <manivannan.sadhasivam@...aro.org>, <dmitry.baryshkov@...aro.org>
Subject: Re: [PATCH V4 1/2] dt-bindings: mailbox: Document qcom,ipq5424-tmel



On 3/28/2025 6:21 PM, Dmitry Baryshkov wrote:
> On Thu, Mar 27, 2025 at 11:47:49PM +0530, Sricharan R wrote:
>> From: Sricharan Ramabadhran <quic_srichara@...cinc.com>
>>
>> TMEL(Trust Management Engine Lite) subsystem provides different kinds of
> 
> Trust whatever SubSystem (TMEL SS) ...
> 
> different to what?
> To the ARM TrustZone firmware(TZ). So these services (secureboot, image
authentication etc) were provided by the TZ in some SOCs. Here, TMEL
provides those. Can add those details here.

>> services like secureboot, remote image authentication, key management,
>> crypto, OEM provisioning etc.
>>
>> The QMP mailbox is the primary means of communication between TMEL SS and
> 
> What is QMP?
Qualcomm Messaging Protocol

> 
>> other subsystem on the SoC. A dedicated pair of inbound and outbound
>> mailboxes is implemented for each subsystem/external execution environment
> 
> Is it implemented in the driver? Is it provided by the hardware? By the
> firmware?
>
TMEL firmware provides and processes the inbound requests and responds
back on the outbound channel. Can mention this explicitly in the above.

Regards,
  Sricharan