[PATCH v2 6/8] armv8: Add generic smbios information into the device tree

[Raymond Mao]

Hi Simon,

On Mon, 28 Oct 2024 at 13:05, Simon Glass <sjg at chromium.org> wrote:

> Hi Raymond,
>
> On Tue, 22 Oct 2024 at 22:07, Raymond Mao <raymond.mao at linaro.org> wrote:
> >
> > Add common smbios information that can be used by all armv8
> > platforms and set it as default for qemu-arm64.
> > From now smbios library can load values from here for those fields
> > doesn't exist in the sysinfo driver.
> >
> > To run this with QEMU arm64, please dump the generated DTB
> > from QEMU first, merge it with the one we build and then re-run
> > QEMU with the merged DTB.
> > ```
> > qemu-system-arm -machine virt -machine dumpdtb=qemu.dtb
> > cat  <(dtc -I dtb qemu.dtb) <(dtc -I dtb ./dts/dt.dtb | \
> >   grep -v /dts-v1/) | dtc - -o merged.dtb
> > qemu-system-arm -machine virt -nographic -bios u-boot.bin \
> >   -dtb merged.dtb
>
> and please talk to Peter about accepting my patch[1]
>
>
> > ```
> > For details please take reference on dt_qemu.rst
> >
> > Signed-off-by: Raymond Mao <raymond.mao at linaro.org>
> > ---
> > Changes in v2
> > - Initial patch.
> >
> >  arch/arm/dts/qemu-arm64.dts      |  4 ++
> >  arch/arm/dts/smbios_generic.dtsi | 82 ++++++++++++++++++++++++++++++++
> >  2 files changed, 86 insertions(+)
> >  create mode 100644 arch/arm/dts/smbios_generic.dtsi
> >
> > diff --git a/arch/arm/dts/qemu-arm64.dts b/arch/arm/dts/qemu-arm64.dts
> > index 096b3910728..95fcf53ed74 100644
> > --- a/arch/arm/dts/qemu-arm64.dts
> > +++ b/arch/arm/dts/qemu-arm64.dts
> > @@ -7,5 +7,9 @@
> >
> >  /dts-v1/;
> >
> > +#if defined(CONFIG_SYSINFO_SMBIOS) && !defined(QFW_SMBIOS)
> > +#include "smbios_generic.dtsi"
> > +#endif
> > +
> >  / {
> >  };
> > diff --git a/arch/arm/dts/smbios_generic.dtsi
> b/arch/arm/dts/smbios_generic.dtsi
> > new file mode 100644
> > index 00000000000..c9f07283403
> > --- /dev/null
> > +++ b/arch/arm/dts/smbios_generic.dtsi
> > @@ -0,0 +1,82 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +/*
> > + * Default SMBIOS information for Arm64 platforms
> > + *
> > + * Copyright (c) 2024 Linaro Limited
> > + * Author: Raymond Mao <raymond.mao at linaro.org>
> > + */
> > +#include <config.h>
> > +#include <smbios_def.h>
> > +
> > +/ {
> > +       smbios {
> > +               compatible = "u-boot,sysinfo-smbios";
> > +
> > +               smbios {
> > +                       system {
> > +                               manufacturer = CONFIG_SYS_VENDOR;
> > +                               product = CONFIG_SYS_BOARD;
> > +                               version = "Not Specified";
> > +                               serial = "Not Specified";
>
> Does it make sense to add these strings? Perhaps if the property is
> missing in the DT, it should be missing in the SMBIOS table? Is 'Not
> Specified' a special string in the SMBIO spec?
>

This is not defined in the spec and actually those strings can be anything.
As currently this is for qemu_arm64 only and we don't have real
vendor-defined values,
"Not Specified" is used as a placeholder to show an example for other
vendors if they
want to add similar properties.

Regards,
Raymond