lkml.org 
[lkml]   [2018]   [Nov]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [BUG] Nuvoton NCPT650 TPM 2.0 mode not working
From
Date
On Sun, 2018-11-11 at 18:55 +0100, Michael Niewöhner wrote:
> Hi all,
>
> Nuvoton NCPT650 does not work in TPM 2.0 mode with tpm_tis / tpm_i2c_nuvoton
> while it works in TPM 1.2 mode (I can reflash it via UEFI setup).
> Kernel version is 4.19.1
>
> Kernel config:
>
> $ cat .config | egrep 'TCG|TPM|CRB|_TIS'
> CONFIG_TCG_TPM=y
> CONFIG_HW_RANDOM_TPM=y
> CONFIG_TCG_TIS_CORE=y
> CONFIG_TCG_TIS=y
> CONFIG_TCG_TIS_SPI=y
> # CONFIG_TCG_TIS_I2C_ATMEL is not set
> # CONFIG_TCG_TIS_I2C_INFINEON is not set
> CONFIG_TCG_TIS_I2C_NUVOTON=y
> # CONFIG_TCG_NSC is not set
> # CONFIG_TCG_ATMEL is not set
> # CONFIG_TCG_INFINEON is not set
> CONFIG_TCG_CRB=y
> # CONFIG_TCG_VTPM_PROXY is not set
> # CONFIG_TCG_TIS_ST33ZP24_I2C is not set
> # CONFIG_TCG_TIS_ST33ZP24_SPI is not set
>
>
> TPM 1.2 mode dmesg:
>
> $ dmesg | egrep -i tis\|tpm\|crb
> [ 3.210040] tpm_tis 00:0a: 1.2 TPM (device-id 0xFE, rev-id 2)
>
>
> TPM 2.0 mode dmesg:
>
> $ dmesg | egrep -i tis\|tpm\|crb
> [ 0.000000] efi: ACPI
> 2.0=0x9e457000 ACPI=0x9e457000 SMBIOS=0x9ec44000 SMBIOS
> 3.0=0x9ec43000 TPMEventLog=0x9711f018
> [ 0.003517] ACPI: TPM2 0x000000009E490ED8 000034 (v03 LENOVO TC-
> S06 00001300 AMI 00000000)
> [ 4.071550] ima: No TPM chip found, activating TPM-bypass!

It's possible that eventually the TPM is initialized, but not in time
for IMA.  Could you you check to see if the TPM is responding to
userspace commands after boot?

Mimi

\
 
 \ /
  Last update: 2018-11-11 19:34    [W:0.136 / U:1.308 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site