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/* SPDX-License-Identifier: MIT */
/*
* Copyright(c) 2020-2022, Intel Corporation. All rights reserved.
*/
#ifndef __INTEL_PXP_TEE_INTERFACE_H__
#define __INTEL_PXP_TEE_INTERFACE_H__
#include <linux/types.h>
#define PXP_TEE_APIVER 0x40002
#define PXP_TEE_43_APIVER 0x00040003
#define PXP_TEE_ARB_CMDID 0x1e
#define PXP_TEE_ARB_PROTECTION_MODE 0x2
#define PXP_TEE_43_START_HUC_AUTH 0x0000003A
/*
* there are a lot of status codes for PXP, but we only define the ones we
* actually can handle in the driver. other failure codes will be printed to
* error msg for debug.
*/
enum pxp_status {
PXP_STATUS_SUCCESS = 0x0,
PXP_STATUS_OP_NOT_PERMITTED = 0x4013
};
/* PXP TEE message header */
struct pxp_tee_cmd_header {
u32 api_version;
u32 command_id;
u32 status;
/* Length of the message (excluding the header) */
u32 buffer_len;
} __packed;
/* PXP TEE message input to create a arbitrary session */
struct pxp_tee_create_arb_in {
struct pxp_tee_cmd_header header;
u32 protection_mode;
u32 session_id;
} __packed;
/* PXP TEE message output to create a arbitrary session */
struct pxp_tee_create_arb_out {
struct pxp_tee_cmd_header header;
} __packed;
struct pxp_tee_start_huc_auth_in {
struct pxp_tee_cmd_header header;
__le64 huc_base_address;
};
struct pxp_tee_start_huc_auth_out {
struct pxp_tee_cmd_header header;
};
#endif /* __INTEL_PXP_TEE_INTERFACE_H__ */
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