57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
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// Copyright 2016 The Fuchsia Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#pragma once
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#include <efi/types.h>
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#include <efi/boot-services.h>
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#include <efi/runtime-services.h>
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#define EFI_BLOCK_IO_PROTOCOL_GUID \
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{0x964e5b21, 0x6459, 0x11d2, {0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b}}
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extern efi_guid BlockIoProtocol;
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#define EFI_BLOCK_IO_PROTOCOL_REVISION2 0x00020001
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#define EFI_BLOCK_IO_PROTOCOL_REVISION3 0x00020031
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typedef struct efi_block_io_media efi_block_io_media;
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typedef struct efi_block_io_protocol efi_block_io_protocol;
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struct efi_block_io_protocol {
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uint64_t Revision;
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efi_block_io_media* Media;
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efi_status (*Reset)(efi_block_io_protocol* self,
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bool ExtendedVerification) EFIAPI;
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efi_status (*ReadBlocks)(efi_block_io_protocol* self,
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uint32_t MediaId, uint64_t LBA,
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uint64_t BufferSize, void* Buffer) EFIAPI;
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efi_status (*WriteBlocks)(efi_block_io_protocol* self,
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uint32_t MediaId, uint64_t LBA,
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uint64_t BufferSize, const void* Buffer) EFIAPI;
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efi_status (*FlushBlocks)(efi_block_io_protocol* self);
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};
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struct efi_block_io_media {
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// present in rev1
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uint32_t MediaId;
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bool RemovableMedia;
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bool MediaPresent;
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bool LogicalPartition;
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bool ReadOnly;
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bool WriteCaching;
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uint32_t BlockSize;
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uint32_t IoAlign;
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uint64_t LastBlock;
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// present in rev2
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uint64_t LowestAlignedLba;
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uint32_t LogicalBlocksPerPhysicalBlock;
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// present in rev3
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uint32_t OptimalTransferLengthGranularity;
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};
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