Files
u-boot/cmd
Raymond Mao 83b28b55d7 smbios: add support for dynamic generation of Type 9 system slot tables
This commit introduces support for generating SMBIOS Type 9 (System Slot)
tables using a hybrid approach:

1. Explicit Device Tree definitions:
   Child node under '/smbios/smbios/system-slot' will be interpreted as
   individual slot definitions.
   - Each child represents a slot (e.g., isa, pcmcia, etc.).
   - Properties follow the SMBIOS specification using lowercase
     hyphen-separated names such as 'slot-type', 'slot-id',
     'segment-group-number', 'bus-number', 'slot-information', etc.
   - This approach allows full customization of each system slot and is
     especially suitable for platforms with well-defined slot topology.

2. Automatic detection fallback:
   If child node under '/smbios/smbios/system-slot' does not exist, the
   implementation will scan the entire device tree for nodes whose
   'device_type' matches known slot-related types ("pci", "isa", "pcmcia",
   etc.).
   - When a match is found, default values or heuristics are applied to
     populate to the System Slot table.
   - This mode is useful for platforms that lack explicit SMBIOS nodes
     but still expose slot topology via standard DT conventions.

Together, two approaches ensure that SMBIOS Type 9 entries are available
whether explicitly described or automatically derived.

Signed-off-by: Raymond Mao <raymondmaoca@gmail.com>
Tested-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2026-02-18 08:27:51 -06:00
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