Please fix BIOS ACPI to make TPM usable

Discussion in 'UDOO BOLT' started by Ratz Fatz, Nov 11, 2019.

  1. Ratz Fatz

    Ratz Fatz UDOOer

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    As of now, the TPM of the Bolt is unusable in Linux because of a "reserved" I/O ACPI-region that overlaps with the TPM. The tpm_crb driver module reports
    [ 0.454180] tpm_crb MSFT0101:00: can't request region for resource [mem 0x9d762000-0x9d765fff]
    [ 0.454218] tpm_crb: probe of MSFT0101:00 failed with error -16
    [ 0.494982] ima: No TPM chip found, activating TPM-bypass!
    The ACPI region in question is
    BIOS-e820: [mem 0x000000009ccaa000-0x000000009d78cfff] reserved
    The problem seems to be quite common with AMD chipsets; for discussions see here (tldr? ->scroll to the end):
    https://bugzilla.redhat.com/show_bug.cgi?id=1394912
    I tested some patches to work around the BIOS-bug, but none of them worked.

    Please, please, fix that!
     
    Chris Andreae and Zgembo like this.
  2. Zgembo

    Zgembo UDOOer

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    Please fix this.
     

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