diff options
| author | Patrick Rudolph <patrick.rudolph@9elements.com> | 2020-09-21 09:49:31 +0200 |
|---|---|---|
| committer | Hung-Te Lin <hungte@chromium.org> | 2020-12-21 02:38:20 +0000 |
| commit | 39d69276091043a41d7cd588dd686ea4b572592e (patch) | |
| tree | 0f65c0419a855ac6fc7264ad346580c41a02fac4 /src/drivers/tpm/Kconfig | |
| parent | f20151dfaa4ffbee9b58aa86d77320c45bd81707 (diff) | |
drivers/tpm: Implement full PPI
Implement the ACPI PPI interface as described in
"TCG PC Client Physical Presence Interface Specification" Version 1.3.
Add a new Kconfig that allows to use the full PPI instead of the stub
version compiled in.
This doesn't add code to execute the PPI request, as that's up to the
payload with graphical UI support.
Tested on GNU/Linux 5.6 using the sysfs interface at:
/sys/class/tpm/tpm0/ppi/
Change-Id: Ifffe1d9b715e2c37568e1b009e86c298025c89ac
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45568
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/drivers/tpm/Kconfig')
| -rw-r--r-- | src/drivers/tpm/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/drivers/tpm/Kconfig b/src/drivers/tpm/Kconfig index 8508210fc6..baf760b4b0 100644 --- a/src/drivers/tpm/Kconfig +++ b/src/drivers/tpm/Kconfig @@ -5,3 +5,14 @@ config TPM_INIT help This driver automatically initializes the TPM if vboot is not used. The TPM driver init is done during the ramstage chip init phase. + +config TPM_PPI + bool "Generate ACPI code to implement TPM physical presence interface" + depends on TPM1 || TPM2 + depends on HAVE_ACPI_TABLES + depends on !CHROMEOS + default y if PAYLOAD_TIANOCORE + help + This driver automatically generates ACPI tables for the Physical + Presence Interface defined by the TCG. If not activated only a stub + will be generated without any functionality. |