TPM: ACPI/PNP dependency removal
This patch pushes the ACPI dependency into the device driver code
itself. Now, even without ACPI/PNP enabled, the device can be registered
using the TIS specified memory space. This will however result in the
lack of access to the BIOS event log, being the only implication of such
ACPI removal.
Signed-off-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index f5fc64f..4dc338f 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -17,14 +17,16 @@
obtained at: <http://sourceforge.net/projects/trousers>. To
compile this driver as a module, choose M here; the module
will be called tpm. If unsure, say N.
- Note: For more TPM drivers enable CONFIG_PNP, CONFIG_ACPI
+ Notes:
+ 1) For more TPM drivers enable CONFIG_PNP, CONFIG_ACPI
and CONFIG_PNPACPI.
+ 2) Without ACPI enabled, the BIOS event log won't be accessible,
+ which is required to validate the PCR 0-7 values.
if TCG_TPM
config TCG_TIS
tristate "TPM Interface Specification 1.2 Interface"
- depends on PNP
---help---
If you have a TPM security chip that is compliant with the
TCG TIS 1.2 TPM specification say Yes and it will be accessible