diff options
| author | Michał Żygowski <michal.zygowski@3mdeb.com> | 2020-03-20 15:41:44 +0100 |
|---|---|---|
| committer | Michał Żygowski <michal.zygowski@3mdeb.com> | 2020-04-07 09:50:22 +0000 |
| commit | 7b288012230cdcd381d6e406ebbe2cb9f334f635 (patch) | |
| tree | 2653874d4fceb3fde7485013f1bc42044a0d09df /src/drivers/pc80 | |
| parent | 2f399b7d5bcfc28a808e61cf203900cfbdacf2b5 (diff) | |
drivers/pc80/tpm/tis.c: change the _HID and _CID for TPM2 device
According TCG PC Client Platform Firmware Profile Specification Revision
1.04 Chapter 8.1 the TPM device object should have the _CID and _HID
values set to MSFT0101 for TPM2.
FreeBSD also detects TPM2 device using MSFT0101 _HID and _CID only.
TEST=boot FreeBSD 12.1 on PC Engines apu2 and check in dmesg that TPM2.0
is detected
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: I45123f272038e664b834cabd9d8525baca0eb583
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39699
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/drivers/pc80')
| -rw-r--r-- | src/drivers/pc80/tpm/tis.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/drivers/pc80/tpm/tis.c b/src/drivers/pc80/tpm/tis.c index 98d31c0a82..1081410011 100644 --- a/src/drivers/pc80/tpm/tis.c +++ b/src/drivers/pc80/tpm/tis.c @@ -886,11 +886,16 @@ static void lpc_tpm_fill_ssdt(struct device *dev) acpigen_write_scope(path); acpigen_write_device(acpi_device_name(dev)); - acpigen_write_name("_HID"); - acpigen_emit_eisaid("PNP0C31"); - - acpigen_write_name("_CID"); - acpigen_emit_eisaid("PNP0C31"); + if (CONFIG(TPM2)) { + acpigen_write_name_string("_HID", "MSFT0101"); + acpigen_write_name_string("_CID", "MSFT0101"); + } else { + acpigen_write_name("_HID"); + acpigen_emit_eisaid("PNP0C31"); + + acpigen_write_name("_CID"); + acpigen_emit_eisaid("PNP0C31"); + } acpi_device_write_uid(dev); |