[PATCH v2 0/2] mtd: devices: Qualcomm SCM storage support

[Konrad Dybcio]

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