On Sun, 2018-11-11 at 21:34 +0100, Michael Niewöhner wrote: > On Sun, 2018-11-11 at 12:29 -0800, James Bottomley wrote: > > On Sun, 2018-11-11 at 21:09 +0100, Michael Niewöhner wrote: > > > On Sun, 2018-11-11 at 10:57 -0800, James Bottomley wrote: > > > > [...] > > > > Well, I still think the ACPI setup is incorrect. What's in > > > > /sys/class/platform (should be directories of ACPI devices)? The > > > > TPM is supposed to show up as MSFT0101. If it doesn't is there any > > > > other device string in there that might be a TPM? > > > > > > Nope. I'm not sure if it should show up in ACPI... isn't TPM 2.0 I2C? > > > > Your ACPI parser identifies it here: > > > > > [ 0.003517] ACPI: TPM2 0x000000009E490ED8 000034 (v03 LENOVO TC- > > > S06 00001300 AMI 00000000) > > > > So it has to be a device in the platform directory. What is in this > > directory? To find the TPM it probably has something TPM like in the > > firmware_node description: > > > > /sys/devices/platform/<dev>/firmware_node/description > > > > Mine says > > > > jejb@jarvis:~/git/linux/drivers> cat > > /sys/devices/platform/MSFT0101\:00/firmware_node/description > > TPM 2.0 Device > > > > Ah, yep. There is indeed a MSFT0101: > (initramfs) cat /sys/devices/platform/MSFT0101\:00/firmware_node/description > TPM 2.0 Device > (initramfs) cat /sys/devices/platform/MSFT0101\:00/firmware_node/hid > MSFT0101 > (in > itramfs) cat /sys/devices/platform/MSFT0101\:00/firmware_node/path > \_SB_.TPM_ > (in > itramfs) cat /sys/devices/platform/MSFT0101\:00/firmware_node/status > 15 > (initramf > s) cat /sys/devices/platform/MSFT0101\:00/firmware_node/uid > 1 > > > James Very strange... When I pull the power cord, then replug and boot, I get these dmesg messages: [ 0.000000] efi: ACPI 2.0=0x9ea78000 ACPI=0x9ea78000 SMBIOS=0x9f5e5000 SMBIOS 3.0=0x9f5e4000 MPS=0xfca00 ESRT=0x9c06e918 MEMATTR=0x99cb9018 TPMEventLog=0x 98d0c018 [ 0.001794] ACPI: TPM2 0x000000009EAB1F70 000034 (v03 LENOVO TC- S06 00001260 AMI 00000000) [ 3.096587] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0xFE, rev-id 2) [ 3.105684] tpm tpm0: A TPM error (2314) occurred attempting the self test After a reboot I get those "ima: ..." message again. Pulling the plug seems to reset anything (the TPM). The PTT TPM 2.0 shows exactly the same behaviour.
