linux-kernel - Re: [PATCH v4 5/8] firmware; qcom: scm: enable QSEECOM on SC8280XP CRD

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Message-ID: <ggqoniunmds7ghvbp4t4kmbas4mr5vm5xvmjv22yznp6sq3bin@j55eff6yxb5b>
Date: Wed, 16 Jul 2025 14:02:53 -0500
From: Bjorn Andersson <andersson@...nel.org>
To: Johan Hovold <johan@...nel.org>
Cc: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>, 
	Konrad Dybcio <konrad.dybcio@....qualcomm.com>, 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>, 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
Subject: Re: [PATCH v4 5/8] firmware; qcom: scm: enable QSEECOM on SC8280XP
 CRD

On Mon, Jun 30, 2025 at 02:16:58PM +0200, Johan Hovold wrote:
> On Sat, Jun 28, 2025 at 05:50:49PM +0300, Dmitry Baryshkov wrote:
> > On Fri, Jun 27, 2025 at 02:50:26PM +0200, Johan Hovold wrote:
> > > On Fri, Jun 27, 2025 at 02:26:41PM +0200, Konrad Dybcio wrote:
> > > > On 6/27/25 2:23 PM, Johan Hovold wrote:
> > > > > On Fri, Jun 27, 2025 at 01:54:37AM +0200, Konrad Dybcio wrote:
> > > > >> On 6/27/25 1:34 AM, Konrad Dybcio wrote:
> > > > >>> On 6/25/25 12:53 AM, Dmitry Baryshkov wrote:
> > > 
> > > > >>>> As reported by Johan, this platform also doesn't currently support
> > > > >>>> updating of the UEFI variables. In preparation to reworking match list
> > > > >>>> for QSEECOM mark this platform as supporting QSEECOM with R/O UEFI
> > > > >>>> variables.
> > > 
> > > > >>>> +	{ .compatible = "qcom,sc8280xp-crd", .data = &qcom_qseecom_ro_uefi, },
> > > > >>>
> > > > >>> R/W works for me (tm).. the META version may be (inconclusive) 2605
> > > > >>
> > > > >> Looked at the wrong SoC META table.. the build date is 05/25/2023
> > > > > 
> > > > > Could be that my machine was not provisioned properly. Do you boot from
> > > > > UFS or NVMe?
> > > > > 
> > > > > My fw is also older: 01/10/2022.
> > > > 
> > > > The machine has UFS, NVME and SPINOR, however the boot log definitely says:
> > > > 
> > > > S - Boot Interface: SPI
> > > 
> > > Mine says:
> > > 
> > > S - Boot Interface: UFS
> > 
> > Is this META even supported? I think it's recommended to update
> > firmware to the latest releases.
> 
> It most likely has nothing to do with the meta version, but whether you
> boot from SPI-NOR or UFS.
> 

It would make sense that the UFS firmware then acts as the firwmare on
any other UFS-based device relies on UFS for EFI variable storage -
using yet to be implemented mechanisms. This would explain why you don't
have persistent storage on your device after ExitBootServices...

Regards,
Bjorn

> Johan