PROCESSOR-SDK-J721E: SMBIOS - DMI table is broken

Joel Winarske

Part Number: PROCESSOR-SDK-J721E
Other Parts Discussed in Thread: SK-TDA4VM

Running U-Boot 2021.01-gea96725b and running dmidecod in Linux I'm seeing DMI table is broken. Is this a known issue, and has it been resolved?

```

dmidecode
# dmidecode 3.3
Getting SMBIOS data from sysfs.
SMBIOS 3.0 present.
7 structures occupying 219 bytes.
Table at 0xFCEB6020.

Wrong DMI structures length: 219 bytes announced, only 138 bytes available.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
        Vendor: U-Boot
        Version: 2021.01-gea96725b
        Release Date: 09/02/2023
        ROM Size: 64 kB
        Characteristics:
                PCI is supported
                BIOS is upgradeable
                Selectable boot is supported
                I2O boot is supported
                Targeted content distribution is supported

Handle 0x0001, DMI type 1, 27 bytes
System Information
        Manufacturer: Not Specified
        Product Name: Not Specified
        Version: Not Specified
        Serial Number: 0000000000000484
        UUID: 30303030-3030-3030-3030-303030343834
        Wake-up Type: Reserved
        SKU Number: Not Specified
        Family: Not Specified

Handle 0x0002, DMI type 2, 14 bytes
Base Board Information
        Manufacturer: Not Specified
        Product Name: Not Specified
        Version: Not Specified
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Features:
                Board is a hosting board
        Location In Chassis: Not Specified
        Chassis Handle: 0x0000
        Type: Motherboard

Invalid entry length (0). DMI table is broken! Stop.

```

over 2 years ago

0 Keerthy J over 2 years ago

TI__Guru**** 167700 points

Hi Joel,

Could you please answer the below questions:

Which SDK version is being used?
Is this a custom J721e Board or TI EVM?

Best Regards,
Keerthy

0 Joel Winarske over 2 years ago in reply to Keerthy J

Prodigy 110 points

Hi Keerthy,

This is work on BeagleBone AI64 using the yocto meta-ti layer for Automotive Grade Linux (AGL). Given the number of issues I'm finding with it, I'm moving to the SK-TDA4VM for now. I will attempt to repro this on SK when I have build ready.

Thanks,

Joel

0 Keerthy J over 2 years ago in reply to Joel Winarske

TI__Guru**** 167700 points

Okay. I will wait for that.

- Keerthy

0 Joel Winarske over 2 years ago in reply to Keerthy J

Prodigy 110 points

With tisdk-base-image I get nothing as SMBIOS is missing from the default u-boot (UEFI disabled). It's a firecracker dependency that will eventually go away.

# dmidecode 
dmidecode 3.3
No SMBIOS nor DMI entry point found, sorry.

0 Keerthy J over 2 years ago in reply to Joel Winarske

TI__Guru**** 167700 points

Hi Joel,

By default I am not even able to run that command on the 8.6 SDK. So this command is not supported by the SDK out of the box.

- Keerthy

0 Joel Winarske over 2 years ago in reply to Keerthy J

Prodigy 110 points

Hi Keerthy,

The arago tisdk-base-image image does not boot using Grub, which means u-boot is not providing SMBIOS. When using Grub SMBIOS is provided by u-boot. This is the case where the error happens. u-boot attempts to emulate UEFI, but there are some gaps.

Is there a know working UEFI reference for any of the TI eval boards? I'm interested in implementing a version. I worked at QC for ten years, then later MSFT Surface with boot to idle as my focus area.

Cheers,
Joel

0 Keerthy J over 2 years ago in reply to Joel Winarske

TI__Guru**** 167700 points

Hi Joel,

I believe no. That said I am double checking internally with Linux team and I will get back to you and soon as I hear back.

Best Regards,

Keerthy

0 Keerthy J over 2 years ago in reply to Keerthy J

TI__Guru**** 167700 points

Hi Joel,

Can you confirm the same with U-Boot 23.04 branch?

https://git.ti.com/gitweb?p=ti-u-boot/ti-u-boot.git;a=shortlog;h=refs/heads/ti-u-boot-2023.04

- Keerthy

0 Keerthy J over 2 years ago in reply to Keerthy J

TI__Guru**** 167700 points

Hi Joel,

I double checked with internal team. This is not supported and we do not have references as well.
Closing this thread. Feel free to ping back if you have related questions.

- Keerthy

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PROCESSOR-SDK-J721E: SMBIOS - DMI table is broken