drivers/pc80/tpm: Set default TPM acpi path if unset
Enable default acpi path PCI0.LPCB if TPM support is
selected in the kconfig system and the acpi path is not set via
acpi_name callback in the platform code.
Thanks to Aaron Durbin for providing this fix.
Change-Id: Idb56cafe71efc8a52eee5a5a663478da99152360
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: https://review.coreboot.org/17855
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
diff --git a/src/drivers/pc80/tpm/tpm.c b/src/drivers/pc80/tpm/tpm.c
index 57ea919..83dc923 100644
--- a/src/drivers/pc80/tpm/tpm.c
+++ b/src/drivers/pc80/tpm/tpm.c
@@ -875,8 +875,10 @@
struct opregion opreg = OPREGION("TREG", SYSTEMMEMORY,
CONFIG_TPM_TIS_BASE_ADDRESS, 0x5000);
- if (!path)
- return;
+ if (!path) {
+ path = "PCI0.LPCB";
+ printk(BIOS_DEBUG, "Using default TPM ACPI path: '%s'\n", path);
+ }
/* Device */
acpigen_write_scope(path);