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      1 /*	$NetBSD: dmub_fw_meta.h,v 1.2 2021/12/18 23:45:06 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2019 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: AMD
     25  *
     26  */
     27 #ifndef _DMUB_META_H_
     28 #define _DMUB_META_H_
     29 
     30 #include "dmub_types.h"
     31 
     32 #pragma pack(push, 1)
     33 
     34 /* Magic value for identifying dmub_fw_meta_info */
     35 #define DMUB_FW_META_MAGIC 0x444D5542
     36 
     37 /* Offset from the end of the file to the dmub_fw_meta_info */
     38 #define DMUB_FW_META_OFFSET 0x24
     39 
     40 /**
     41  * struct dmub_fw_meta_info - metadata associated with fw binary
     42  *
     43  * NOTE: This should be considered a stable API. Fields should
     44  *       not be repurposed or reordered. New fields should be
     45  *       added instead to extend the structure.
     46  *
     47  * @magic_value: magic value identifying DMUB firmware meta info
     48  * @fw_region_size: size of the firmware state region
     49  * @trace_buffer_size: size of the tracebuffer region
     50  */
     51 struct dmub_fw_meta_info {
     52 	uint32_t magic_value;
     53 	uint32_t fw_region_size;
     54 	uint32_t trace_buffer_size;
     55 };
     56 
     57 /* Ensure that the structure remains 64 bytes. */
     58 union dmub_fw_meta {
     59 	struct dmub_fw_meta_info info;
     60 	uint8_t reserved[64];
     61 };
     62 
     63 #pragma pack(pop)
     64 
     65 #endif /* _DMUB_META_H_ */
     66