QEMU provides SMBIOS tables with detailed information. We should not try to replicate them in U-Boot.
With this series we add code to copy the QEMU generated SMBIOS tables to RAM. efi_smbios_register() later installs the SMBIOS table as EFI configuration table for the OS to pick it up.
If we want to inform about U-Boot, we can add a Firmware Inventory Information (type 45) table in future.
With 32bit ARM I did not see a correct SMBIOS table being transferred. We need to check if our code in qfw_read_entry() is 32bit compliant.
For providing SMBIOS support in QEMU for RISC-V I have sent a patch upstream:
[PATCH 1/1] target/riscv: SMBIOS support for RISC-V virt machine https://lore.kernel.org/qemu-riscv/9183a3fb-b9f7-470c-b9a6-8d8cc6dce7c3@cano...
Currently we have a predefined constant TABLE_SIZE = SZ_4K in lib/efi_loader/efi_smbios.c. We should strive to refactor the code in future to provide the length of the SMBIOS tables in global data. But that is beyond the scope of this series.
Further we should find a matainer for drivers/misc/qfw*. It would be plausible to add it to 'ACPI' maintenance.
A test via a new SMBIOS command is supplied in
[PATCH 0/5] cmd: provide command to display SMBIOS information https://lore.kernel.org/u-boot/20231223004429.247301-1-xypron.glpk@gmx.de/T/...
v2: fix parsing of SMBIOS anchor enable copying on x86 and 32bit ARM/RISC-V
Heinrich Schuchardt (2): smbios: SMBIOS 3.0 (64-bit) Entry Point structure smbios: copy QEMU tables
arch/x86/lib/tables.c | 2 +- drivers/misc/Kconfig | 7 ++ drivers/misc/Makefile | 1 + drivers/misc/qfw_smbios.c | 197 ++++++++++++++++++++++++++++++++++++ include/smbios.h | 26 +++++ lib/efi_loader/efi_smbios.c | 4 +- 6 files changed, 235 insertions(+), 2 deletions(-) create mode 100644 drivers/misc/qfw_smbios.c
-- 2.43.0