Re: Where does these TPM flags comes from?

[Paolo Bonzini]

On 07/09/20 22:45, 罗勇刚(Yonggang Luo) wrote:
> tpm_ss = ss.source_set()
> 
> tpm_ss.add(files('tpm_backend.c'))
> tpm_ss.add(files('tpm_util.c'))
> tpm_ss.add(when: 'CONFIG_TPM_PASSTHROUGH', if_true:
> files('tpm_passthrough.c'))
> tpm_ss.add(when: 'CONFIG_TPM_EMULATOR', if_true: files('tpm_emulator.c'))
> 
> softmmu_ss.add_all(when: 'CONFIG_TPM', if_true: tpm_ss)
> 
> I can not found the config for CONFIG_TPM_PASSTHROUGH  and 
> CONFIG_TPM_EMULATOR 
> 

It comes from *-config-devices.mak, which is created by
scripts/minikconf.py based on these rules from backends/tpm/Kconfig:

config TPM_BACKEND
    bool
    depends on TPM

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

Paolo