Hi again, On Sat, 2019-01-12 at 10:52 +0100, Michael Niewöhner wrote: > Hi Mimi, > > On Fri, 2019-01-11 at 10:40 -0500, Mimi Zohar wrote: > > Hi Michael, > > > > On Sun, 2018-11-11 at 19:50 +0100, Michael Niewöhner wrote: > > > > > Well, there are at least two implementations I know of: > > > For my Lenovo X260 I can choose between Infineon TPM 1.2 or Intel PTT TPM > > > 2.0 > > > This here is my ThinkStation P320 which can choose between PTT 1.2, PTT > > > 2.0, > > > Nuvoton 1.2 and 2.0. When switchting between 1.2 and 2.0 the Nuvoton gets > > > reflashed with the appropriate firmware. > > > > With IBM's LTC help, we finally found a Lenovo with the Nuvoton > > NCPT650. It's a System x3550 M5[1], not a ThinkStation P320, running > > Fedora (vmlinuz-4.16.14-300.fc28.x86_64). I replaced the 4.16 kernel > > with the latest stable 4.19.y kernel. Both the TPM and IMA seem to be > > working properly. Not sure if this helps... > > > > From dmesg: > > # dmesg | grep -i tpm > > [ 0.000000] Linux version 4.19.14 (mimi@xxxxxxxxxxxxxxxxx.stglabs.i > > bm.com) (gcc version 8.1.1 20180502 (Red Hat 8.1.1-1) (GCC)) #6 SMP > > Thu Jan 10 22:32:54 EST 2019 > > [ 0.000000] efi: ACPI=0x7b786000 ACPI 2.0=0x7b786014 > > SMBIOS=0x793fe000 TPMEventLog=0x426fa018 > > [ 0.014413] ACPI: SSDT 0x000000007B784000 0003A7 (v02 INTEL > > Tpm2Tabl 00001000 INTL 20130328) > > [ 0.014416] ACPI: TPM2 0x000000007B783000 000034 (v03 INTEL EDK2 > > 00000002 INTL 01000013) > > [ 2.667052] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0xFE, rev-id 2 > > > > # cat /sys/kernel/security/ima/ascii_runtime_measurements | head -2 > > 10 5425744ce804c8cae89a08d53b41ab20ff1b3ea6 ima-sig > > sha1:7996f7339c3ce64e63f1232ef1aa6033247af784 boot_aggregate > > > > I installed the ibmtpm2tss[2], built (eg. autoreconf -i; configure -- > > enable-hwtpm) and installed it. > > > > # export LD_LIBRARY_PATH=/usr/local/lib/ > > # cd /usr/local/bin > > # ./tsspcrread -ha 10 -halg sha256 -ns > > f73ff9109b06d4f7a7cbe7eac32b20d2ca662e55cb4c81e152beea261989ad4b > > > > Mimi > > > > [1] https://lenovopress.com/lp0599.pdf > > [2] https://git.code.sf.net/p/ibmtpm20tss/tss > > > > what UEFI version is installed on that machine? > Is the TPM connected via LPC or I2C? > > Best regards > Michael > > I had a short look to an extracted x3550 UEFI firmware (tbe132l-2.52). This seems to be a very different implementation, probably due to the fact that this is a server firmware but not a desktop/workstation firmware. I do not know how much UEFI has influence on the communication with the TPM but I assume we can not really compare x3550 with P320 :-( Best regards Michael
