linux-kernel - Re: [PATCH v2 0/2] mtd: devices: Qualcomm SCM storage support

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: <d0652707-c983-4deb-981c-b1584168e330@oss.qualcomm.com>
Date: Wed, 28 Jan 2026 14:26:23 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Junhao Xie <bigfoot@...xa.com>, Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mtd@...ts.infradead.org, Xilin Wu <sophon@...xa.com>
Subject: Re: [PATCH v2 0/2] mtd: devices: Qualcomm SCM storage support

On 1/26/26 12:44 PM, Junhao Xie wrote:
> This patch series adds support for accessing storage devices managed by
> Qualcomm TrustZone firmware via SCM (Secure Channel Manager) by
> introducing a new MTD driver.
> 
> On some Qualcomm platforms, firmware or BIOS-related storage (typically
> SPI NOR flash) is not directly accessible from the non-secure world.
> All read, write, and erase operations must be performed through SCM
> interfaces provided by the secure firmware. As a result, existing MTD
> SPI NOR drivers cannot be used directly on these systems.
> 
> This series introduces a new MTD device driver that exposes such
> firmware-managed storage as a standard MTD device in the Linux kernel.
> The driver is built on top of the existing Qualcomm SCM infrastructure
> and integrates with the MTD subsystem to provide a uniform interface to
> userspace.

[...]

> Junhao Xie (2):
>       firmware: qcom: scm: Add SCM storage interface support
>       mtd: devices: Add Qualcomm SCM storage driver
> 
>  drivers/firmware/qcom/qcom_scm.c       | 161 ++++++++++++++++++++
>  drivers/firmware/qcom/qcom_scm.h       |   3 +
>  drivers/mtd/devices/Kconfig            |  17 +++
>  drivers/mtd/devices/Makefile           |   1 +
>  drivers/mtd/devices/qcom_scm_storage.c | 265 +++++++++++++++++++++++++++++++++
>  include/linux/firmware/qcom/qcom_scm.h |  34 +++++
>  6 files changed, 481 insertions(+)
> ---
> base-commit: 63804fed149a6750ffd28610c5c1c98cce6bd377

This is 6.19-rc7, please rebase on linux-next/master (the series
doesn't currently apply because this base is essentially a full release
behind)

Konrad