1 files changed, 58 insertions, 0 deletions
diff --git a/src/drivers/tpm/tpm_ppi.h b/src/drivers/tpm/tpm_ppi.h
new file mode 100644
index 0000000000..7662386575
--- /dev/null
+++ b/src/drivers/tpm/tpm_ppi.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _TPM_PPI_H_
+#define _TPM_PPI_H_
+
+#include <device/device.h>
+
+#if CONFIG(HAVE_ACPI_TABLES)
+void tpm_ppi_acpi_fill_ssdt(const struct device *dev);
+#else
+static inline void tpm_ppi_acpi_fill_ssdt(const struct device *dev)
+{
+}
+#endif
+
+
+/* Return codes */
+/* Function 2 */
+#define PPI2_RET_SUCCESS 0
+#define PPI2_RET_NOT_SUPPORTED 1
+#define PPI2_RET_GENERAL_FAILURE 2
+
+/* Function 3 */
+#define PPI3_RET_SUCCESS 0
+#define PPI3_RET_GENERAL_FAILURE 1
+
+/* Function 4 */
+#define PPI4_RET_NONE 0
+#define PPI4_RET_SHUTDOWN 1
+#define PPI4_RET_REBOOT 2
+#define PPI4_RET_OS_VENDOR_SPECIFIC 3
+
+/* Function 5 */
+#define PPI5_RET_SUCCESS 0
+#define PPI5_RET_GENERAL_FAILURE 1
+
+/* Function 6 */
+#define PPI6_RET_NOT_IMPLEMENTED 3
+
+/* Function 7 */
+#define PPI7_RET_SUCCESS 0
+#define PPI7_RET_NOT_IMPLEMENTED 1
+#define PPI7_RET_GENERAL_FAILURE 2
+#define PPI7_RET_BLOCKED_BY_FIRMWARE 3
+
+/* Function 8 */
+#define PPI8_RET_NOT_IMPLEMENTED 0
+#define PPI8_RET_FIRMWARE_ONLY 1
+#define PPI8_RET_BLOCKED_FOR_OS_BY_FW 2
+#define PPI8_RET_ALLOWED_WITH_PP 3
+#define PPI8_RET_ALLOWED 4
+
+/* TCG Physical Presence Interface */
+#define TPM_PPI_UUID   "3dddfaa6-361b-4eb4-a424-8d10089d1653"
+/* TCG Memory Clear Interface */
+#define TPM_MCI_UUID   "376054ed-cc13-4675-901c-4756d7f2d45d"
+
+#endif /* _TPM_PPI_H_ */