config TPM_BACKEND
    bool
    depends on TPM

config TPM_TIS_ISA
    bool
    depends on TPM && ISA_BUS
    select TPM_TIS

config TPM_TIS_SYSBUS
    bool
    depends on TPM
    select TPM_TIS

config TPM_TIS
    bool
    depends on TPM
    select TPM_BACKEND

config TPM_CRB
    bool
    depends on TPM && PC
    select TPM_BACKEND

config TPM_PASSTHROUGH
    bool
    default y
    # FIXME: should check for x86 host as well
    depends on TPM_BACKEND && LINUX

config TPM_EMULATOR
    bool
    default y
    depends on TPM_BACKEND

config TPM_SPAPR
    bool
    default y
    depends on TPM && PSERIES
    select TPM_BACKEND