Files
u-boot/cmd
Raymond Mao 374896158b smbios: add support for dynamic generation of Type 16 table
This commit implements SMBIOS Type 16 (Physical Memory Array)
generation with a hybrid approach supporting both:

1. Explicit definition via Device Tree 'smbios' node:
   Child node under '/smbios/smbios/memory-array' will be used to
   populate as individual Type 16 structure directly.
   - Properties follow SMBIOS field names with lowercase letters and
     hyphen-separated words (e.g., 'memory-error-correction',
     'maximum-capacity', 'extended-maximum-capacity', etc.).
   - This method supports precise platform-defined overrides and system
     descriptions.

2. Fallback to automatic DT-based discovery:
   If child node under '/smbios/smbios/memory-array' does not exist,
   the implementation will:
   - Scan all top-level 'memory@' nodes to populate Type 16 structure with
     inferred size and location data.
   - Scan nodes named or marked as 'memory-controller' and parse
     associated 'dimm@' subnodes (if present) to extract DIMM sizes and
     map them accordingly.

This dual-mode support enables flexible firmware SMBIOS reporting while
aligning with spec-compliant naming and runtime-detected memory topology.

Type 16 support is under GENERATE_SMBIOS_TABLE_VERBOSE to avoid
increasing rom size for those platforms which only require basic SMBIOS
support.

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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