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drivers/crb: Return an accurate status

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Rather than unconditionally returning that the device is present,
return whether the fTPM is on or not.

Test=Boot the StarLite Mk V with the Intel ME disabled, and check
that the TPM is reported as not present.

Change-Id: If8236021bf0e1264646971cff9c998fac99ac220
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85228
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
This commit is contained in:
Sean Rhodes 2024-11-21 09:28:26 +00:00
commit d503ce1277
1 changed files with 4 additions and 1 deletions
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5
src/drivers/crb/tis.c
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@ -90,7 +90,10 @@ static void crb_tpm_fill_ssdt(const struct device *dev)
acpi_device_write_uid(dev);
acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON);
if (CONFIG(HAVE_INTEL_PTT) && ptt_active())
acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON);
else
acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_OFF);
/* Resources */
acpigen_write_name("_CRS");