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-rw-r--r--drivers/char/tpm/tpm_ftpm_tee.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm_ftpm_tee.h b/drivers/char/tpm/tpm_ftpm_tee.h
new file mode 100644
index 000000000..f98daa7bf
--- /dev/null
+++ b/drivers/char/tpm/tpm_ftpm_tee.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) Microsoft Corporation
+ */
+
+#ifndef __TPM_FTPM_TEE_H__
+#define __TPM_FTPM_TEE_H__
+
+#include <linux/tee_drv.h>
+#include <linux/tpm.h>
+#include <linux/uuid.h>
+
+/* The TAFs ID implemented in this TA */
+#define FTPM_OPTEE_TA_SUBMIT_COMMAND (0)
+#define FTPM_OPTEE_TA_EMULATE_PPI (1)
+
+/* max. buffer size supported by fTPM */
+#define MAX_COMMAND_SIZE 4096
+#define MAX_RESPONSE_SIZE 4096
+
+/**
+ * struct ftpm_tee_private - fTPM's private data
+ * @chip: struct tpm_chip instance registered with tpm framework.
+ * @state: internal state
+ * @session: fTPM TA session identifier.
+ * @resp_len: cached response buffer length.
+ * @resp_buf: cached response buffer.
+ * @ctx: TEE context handler.
+ * @shm: Memory pool shared with fTPM TA in TEE.
+ */
+struct ftpm_tee_private {
+ struct tpm_chip *chip;
+ u32 session;
+ size_t resp_len;
+ u8 resp_buf[MAX_RESPONSE_SIZE];
+ struct tee_context *ctx;
+ struct tee_shm *shm;
+};
+
+#endif /* __TPM_FTPM_TEE_H__ */