[PATCH v5 0/1] DMI: Scan for DMI table from DTS info
Conor Dooley
conor at kernel.org
Fri Oct 31 07:19:34 PDT 2025
On Fri, Oct 31, 2025 at 04:59:16AM -0700, adriana wrote:
> Some bootloaders like U-boot, particularly for the ARM architecture,
> provide SMBIOS/DMI tables at a specific memory address. However, these
> systems often do not boot using a full UEFI environment, which means the
> kernel's standard EFI DMI scanner cannot find these tables.
>
> This series adds support for the kernel to find these tables by
> reading the associated property from the Device Tree /chosen node. The
> bootloader can specify the physical addresses using the property
> "smbios3-entrypoint".
>
> This patch implements the driver logic in dmi_scan.c.
>
> Changes in v5:
> - Removed linux,smbios3-entrypoint.yaml file and the first patch.
> - Renamed property to "smbios3-entrypoint".
Please stop sending new versions as a reply to the old one.
>
> Changes in v4:
> - Renamed linux,smbios3-table.yaml file, removed mention of ARM/ARM64
> (Patch 1/2).
> - Drop the second definition of dmi_scan_from_dt() and fold checking
> for CONFIG_OF (Patch 2/2).
> - Drop unnecessary goto on the success case (Patch 2/2).
> - Replace magic number for entrypoint size with SMBIOS3_ENTRY_POINT_SIZE
> definition (Patch 2/2).
>
> Changes in v3:
> - Removed linux,smbios-table property, only keep the SMBIOSv3 property
> (Patch 1/2).
> - Search DT for linux,smbios3-table only, removed the code searching
> for the previous property (Patch 2/2).
>
> Changes in v2:
> - Add missing Device Tree binding documentation (Patch 1/2).
> - Split the original patch into a 2-part series (binding + driver).
> - (No functional changes to the driver code in patch 2/2).
>
> adriana (1):
> drivers: firmware: dmi_scan: Add support for reading SMBIOS from DT
>
> drivers/firmware/dmi_scan.c | 54 +++++++++++++++++++++++++++++++++++++
> 1 file changed, 54 insertions(+)
>
> --
> 2.51.0
>
>
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