[SeaBIOS] TPM 2.0 with SeaBIOS

[Piotr Kubaj]

Hi,

I use SeaBIOS 1.11.2 as payload with 4.8-835-g113f670baa on ASUS KGPE-D16 board. I also have ASUS TPM-L R2.0 module with Infineon SLB9665 chip.

TPM is correctly detected by both Linux and FreeBSD. It's also detected by coreboot in debug console. But SeaBIOS doesn't cooperate with it - there's no TPM menu.

In serial console, I get:
TCGBIOS: Detected a TPM 1.2.
rsdp=0x000f1930
rsdt=0xbf4b9030
table(41504354)=0xbf4bf460
TCGBIOS: Starting with TPM_Startup(ST_CLEAR)
Return from tpm_simple_cmd(99, 1) = 1e
TCGBIOS: TPM malfunctioning (line 874).
Return from tpm_simple_cmd(73, 0) = 1e

Note that SeaBIOS detects it as TPM 1.2, even though it's TPM 2.0.