Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/include/linux/psp-tee.h b/include/linux/psp-tee.h
new file mode 100644
index 0000000..cb0c95d
--- /dev/null
+++ b/include/linux/psp-tee.h
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * AMD Trusted Execution Environment (TEE) interface
+ *
+ * Author: Rijo Thomas <Rijo-john.Thomas@amd.com>
+ *
+ * Copyright 2019 Advanced Micro Devices, Inc.
+ *
+ */
+
+#ifndef __PSP_TEE_H_
+#define __PSP_TEE_H_
+
+#include <linux/types.h>
+#include <linux/errno.h>
+
+/* This file defines the Trusted Execution Environment (TEE) interface commands
+ * and the API exported by AMD Secure Processor driver to communicate with
+ * AMD-TEE Trusted OS.
+ */
+
+/**
+ * enum tee_cmd_id - TEE Interface Command IDs
+ * @TEE_CMD_ID_LOAD_TA: Load Trusted Application (TA) binary into
+ * TEE environment
+ * @TEE_CMD_ID_UNLOAD_TA: Unload TA binary from TEE environment
+ * @TEE_CMD_ID_OPEN_SESSION: Open session with loaded TA
+ * @TEE_CMD_ID_CLOSE_SESSION: Close session with loaded TA
+ * @TEE_CMD_ID_INVOKE_CMD: Invoke a command with loaded TA
+ * @TEE_CMD_ID_MAP_SHARED_MEM: Map shared memory
+ * @TEE_CMD_ID_UNMAP_SHARED_MEM: Unmap shared memory
+ */
+enum tee_cmd_id {
+ TEE_CMD_ID_LOAD_TA = 1,
+ TEE_CMD_ID_UNLOAD_TA,
+ TEE_CMD_ID_OPEN_SESSION,
+ TEE_CMD_ID_CLOSE_SESSION,
+ TEE_CMD_ID_INVOKE_CMD,
+ TEE_CMD_ID_MAP_SHARED_MEM,
+ TEE_CMD_ID_UNMAP_SHARED_MEM,
+};
+
+#ifdef CONFIG_CRYPTO_DEV_SP_PSP
+/**
+ * psp_tee_process_cmd() - Process command in Trusted Execution Environment
+ * @cmd_id: TEE command ID (&enum tee_cmd_id)
+ * @buf: Command buffer for TEE processing. On success, is updated
+ * with the response
+ * @len: Length of command buffer in bytes
+ * @status: On success, holds the TEE command execution status
+ *
+ * This function submits a command to the Trusted OS for processing in the
+ * TEE environment and waits for a response or until the command times out.
+ *
+ * Returns:
+ * 0 if TEE successfully processed the command
+ * -%ENODEV if PSP device not available
+ * -%EINVAL if invalid input
+ * -%ETIMEDOUT if TEE command timed out
+ * -%EBUSY if PSP device is not responsive
+ */
+int psp_tee_process_cmd(enum tee_cmd_id cmd_id, void *buf, size_t len,
+ u32 *status);
+
+/**
+ * psp_check_tee_status() - Checks whether there is a TEE which a driver can
+ * talk to.
+ *
+ * This function can be used by AMD-TEE driver to query if there is TEE with
+ * which it can communicate.
+ *
+ * Returns:
+ * 0 if the device has TEE
+ * -%ENODEV if there is no TEE available
+ */
+int psp_check_tee_status(void);
+
+#else /* !CONFIG_CRYPTO_DEV_SP_PSP */
+
+static inline int psp_tee_process_cmd(enum tee_cmd_id cmd_id, void *buf,
+ size_t len, u32 *status)
+{
+ return -ENODEV;
+}
+
+static inline int psp_check_tee_status(void)
+{
+ return -ENODEV;
+}
+#endif /* CONFIG_CRYPTO_DEV_SP_PSP */
+#endif /* __PSP_TEE_H_ */