linux-kernel - Re: [PATCH 3/5] firmware: scm: Modify only the DLOAD bit in TCSR register for download mode

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: <659c81b0-b75e-9a6f-bd26-878bb9868397@quicinc.com>
Date:   Fri, 27 Jan 2023 20:30:36 +0530
From:   POOVENDHAN SELVARAJ <quic_poovendh@...cinc.com>
To:     Guru Das Srinagesh <quic_gurus@...cinc.com>
CC:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <lee@...nel.org>,
        <catalin.marinas@....com>, <will@...nel.org>,
        <shawnguo@...nel.org>, <arnd@...db.de>,
        <marcel.ziswiler@...adex.com>, <dmitry.baryshkov@...aro.org>,
        <nfraprado@...labora.com>, <broonie@...nel.org>,
        <robimarko@...il.com>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <quic_srichara@...cinc.com>, <quic_gokulsri@...cinc.com>,
        <quic_sjaganat@...cinc.com>, <quic_kathirav@...cinc.com>,
        <quic_arajkuma@...cinc.com>, <quic_anusha@...cinc.com>,
        <quic_devipriy@...cinc.com>
Subject: Re: [PATCH 3/5] firmware: scm: Modify only the DLOAD bit in TCSR
 register for download mode


On 1/14/2023 6:46 AM, Guru Das Srinagesh wrote:
> On Jan 13 2023 21:30, Poovendhan Selvaraj wrote:
>> Add support to read-modify-write TCSR register to modify only DLOAD bit.
> Could you please add more details on what problem this patch is fixing, and why
> this patch is needed?
>
> CrashDump collection is based on the DLOAD bit of TCSR register. To retain other bits, we read the register and modify only the DLOAD bit as the other bits have their own significance.
>
> Thank you.
>
> Guru Das.
>
> Regards,
> Poovendhan S