101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef TRUSTY_INTERFACE_AVB_H_
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#define TRUSTY_INTERFACE_AVB_H_
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#include <trusty/sysdeps.h>
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#define AVB_PORT "com.android.trusty.avb"
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#define AVB_MAX_BUFFER_LENGTH 2048
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enum avb_command {
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AVB_REQ_SHIFT = 1,
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AVB_RESP_BIT = 1,
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READ_ROLLBACK_INDEX = (0 << AVB_REQ_SHIFT),
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WRITE_ROLLBACK_INDEX = (1 << AVB_REQ_SHIFT),
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AVB_GET_VERSION = (2 << AVB_REQ_SHIFT),
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READ_PERMANENT_ATTRIBUTES = (3 << AVB_REQ_SHIFT),
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WRITE_PERMANENT_ATTRIBUTES = (4 << AVB_REQ_SHIFT),
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READ_LOCK_STATE = (5 << AVB_REQ_SHIFT),
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WRITE_LOCK_STATE = (6 << AVB_REQ_SHIFT),
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LOCK_BOOT_STATE = (7 << AVB_REQ_SHIFT),
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READ_VBMETA_PUBLIC_KEY = (8 << AVB_REQ_SHIFT),
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WRITE_VBMETA_PUBLIC_KEY = (9 << AVB_REQ_SHIFT),
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};
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/**
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* enum avb_error - error codes for AVB protocol
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* @AVB_ERROR_NONE: All OK
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* @AVB_ERROR_INVALID: Invalid input
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* @AVB_ERROR_INTERNAL: Error occurred during an operation in Trusty
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*/
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enum avb_error {
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AVB_ERROR_NONE = 0,
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AVB_ERROR_INVALID = 1,
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AVB_ERROR_INTERNAL = 2,
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};
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/**
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* avb_message - Serial header for communicating with AVB server
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* @cmd: the command. Payload must be a serialized buffer of the
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* corresponding request object.
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* @result: resulting error code for message, one of avb_error.
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* @payload: start of the serialized command specific payload
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*/
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struct avb_message {
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uint32_t cmd;
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uint32_t result;
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uint8_t payload[0];
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};
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/**
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* avb_rollback_req - request format for [READ|WRITE]_ROLLBACK_INDEX
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* @value: value to write to rollback index. Ignored for read.
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* @slot: slot number of rollback index to write
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*/
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struct avb_rollback_req {
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uint64_t value;
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uint32_t slot;
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} TRUSTY_ATTR_PACKED;
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/**
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* avb_rollback_resp - response format for [READ|WRITE]_ROLLBACK_INDEX.
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* @value: value of the requested rollback index.
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*/
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struct avb_rollback_resp {
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uint64_t value;
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};
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/**
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* avb_get_version_resp - response format for AVB_GET_VERSION.
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* @version: version of AVB message format
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*/
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struct avb_get_version_resp {
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uint32_t version;
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};
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#endif /* TRUSTY_INTERFACE_AVB_H_ */
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