mtk-lk/platform/common/include/efi.h

/* Copyright Statement:
*
* This software/firmware and related documentation ("MediaTek Software") are
* protected under relevant copyright laws. The information contained herein
* is confidential and proprietary to MediaTek Inc. and/or its licensors.
* Without the prior written permission of MediaTek inc. and/or its licensors,
* any reproduction, modification, use or disclosure of MediaTek Software,
* and information contained herein, in whole or in part, shall be strictly prohibited.
*/
/* MediaTek Inc. (C) 2015. All rights reserved.
*
* BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
* RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
* AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
* NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
* SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
* SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
* THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
* THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
* CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
* SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
* STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
* CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
* AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
* OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
* MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
*/
#ifndef __EFI_H__
#define __EFI_H__


typedef struct {
	u8 b[16];
} __attribute__((packed)) efi_guid_t;


typedef struct {
	u64 signature;
	u32 revision;
	u32 header_size;
	u32 header_crc32;
	u32 reserved;
	u64 my_lba;
	u64 alternate_lba;
	u64 first_usable_lba;
	u64 last_usable_lba;
	efi_guid_t disk_guid;
	u64 partition_entry_lba;
	u32 num_partition_entries;
	u32 sizeof_partition_entry;
	u32 partition_entry_array_crc32;
} __attribute__((packed)) gpt_header;


#define GPT_ENTRY_NAME_LEN  (72 / sizeof(u16))

typedef struct {
	efi_guid_t partition_type_guid;
	efi_guid_t unique_partition_guid;
	u64 starting_lba;
	u64 ending_lba;
	u64 attributes;
	u16 partition_name[GPT_ENTRY_NAME_LEN];
} __attribute__((packed))gpt_entry;

#define GPT_PROTECTIVE_MBR (0xEE)

typedef struct {
	u8 boot_ind;
	u8 head;
	u8 sector;
	u8 cyl;
	u8 sys_ind;
	u8 end_head;
	u8 end_sector;
	u8 end_cyl;
	u32 start_sector;
	u32 nr_sects;
} __attribute__((packed)) mbr_partition;

typedef struct {
	u8 boot_code[440];
	u32 unique_mbr_signature;
	u16 unknown;
	mbr_partition partition_record[4];
	u16 signature;
} __attribute__((packed)) pmbr;

#define GPT_HEADER_SIGNATURE    0x5452415020494645ULL

#endif