X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FInclude%2FUefi%2FUefiGpt.h;h=f2d0fa0b09f69c85fd5f81edc0b2f6bc70600379;hp=bac0c2668d9f1988434fc32dfeb13a998d03f972;hb=08855193cafebaa2e071ffb5f083bcb3cb6d4df0;hpb=41c333aa68924a545d233165083122c1c48e0c89

diff --git a/MdePkg/Include/Uefi/UefiGpt.h b/MdePkg/Include/Uefi/UefiGpt.h
index bac0c2668d..f2d0fa0b09 100644
--- a/MdePkg/Include/Uefi/UefiGpt.h
+++ b/MdePkg/Include/Uefi/UefiGpt.h
@@ -1,14 +1,14 @@
 /** @file
   EFI Guid Partition Table Format Definition.
 
-  Copyright (c) 2006 - 2009, Intel Corporation
-  All rights reserved. This program and the accompanying materials
-  are licensed and made available under the terms and conditions of the BSD License
-  which accompanies this distribution.  The full text of the license may be found at
-  http://opensource.org/licenses/bsd-license.php
-
-  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under 
+the terms and conditions of the BSD License that accompanies this distribution.  
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.                                          
+    
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 **/
 
@@ -21,19 +21,19 @@
 ///
 #define PRIMARY_PART_HEADER_LBA 1
 ///
-/// EFI Partition Table Signature: "EFI PART"
+/// EFI Partition Table Signature: "EFI PART".
 /// 
 #define EFI_PTAB_HEADER_ID      SIGNATURE_64 ('E','F','I',' ','P','A','R','T')
 
 #pragma pack(1)
 
 ///
-/// GPT Partition Table Header
+/// GPT Partition Table Header.
 ///
 typedef struct {
   ///
   /// The table header for the GPT partition Table.
-  /// This header contains EFI_PTAB_HEADER_ID
+  /// This header contains EFI_PTAB_HEADER_ID.
   ///
   EFI_TABLE_HEADER  Header;
   ///
@@ -69,7 +69,8 @@ typedef struct {
   ///
   /// The size, in bytes, of each the GUID Partition
   /// Entry structures in the GUID Partition Entry
-  /// array. Must be a multiple of 8.
+  /// array. This field shall be set to a value of 128 x 2^n where n is
+  /// an integer greater than or equal to zero (e.g., 128, 256, 512, etc.).
   ///
   UINT32            SizeOfPartitionEntry;
   ///
@@ -82,7 +83,7 @@ typedef struct {
 } EFI_PARTITION_TABLE_HEADER;
 
 ///
-/// GPT Partition Entry
+/// GPT Partition Entry.
 ///
 typedef struct {
   ///
@@ -110,22 +111,26 @@ typedef struct {
   ///             partition indicates that deletion or modification of the contents can result in loss of platform
   ///             features or failure for the platform to boot or operate. The system cannot function normally if
   ///             this partition is removed, and it should be considered part of the hardware of the system.
-  ///             Actions such as running diagnostics, system recovery, or even OS install or boot could
+  ///             Actions such as running diagnostics, system recovery, or even OS install or boot, could
   ///             potentially stop working if this partition is removed. Unless OS software or firmware
   ///             recognizes this partition, it should never be removed or modified as the UEFI firmware or
   ///             platform hardware may become non-functional.
-  /// Bit 1:      If this bit is set firmware must not produce an EFI_BLOCK_IO_PROTOCOL device for
-  ///             this partition. By not producing EFI_BLOCK_IO_PROTOCOL partition, file system
+  /// Bit 1:      If this bit is set, then firmware must not produce an EFI_BLOCK_IO_PROTOCOL device for
+  ///             this partition. By not producing an EFI_BLOCK_IO_PROTOCOL partition, file system
   ///             mappings will not be created for this partition in UEFI.
-  /// Bits 2-47:  Undefined and must be zero. Reserved for expansion by future versions of the UEFI
+  /// Bit 2:      This bit is set aside to let systems with traditional PC-AT BIOS firmware implementations
+  ///             inform certain limited, special-purpose software running on these systems that a GPT 
+  ///             partition may be bootable. The UEFI boot manager must ignore this bit when selecting
+  ///             a UEFI-compliant application, e.g., an OS loader.
+  /// Bits 3-47:  Undefined and must be zero. Reserved for expansion by future versions of the UEFI
   ///             specification.
   /// Bits 48-63: Reserved for GUID specific use. The use of these bits will vary depending on the
   ///             PartitionTypeGUID. Only the owner of the PartitionTypeGUID is allowed
-  ///             to modify these bits. They must be preserved if Bits 0¨C47 are modified..
+  ///             to modify these bits. They must be preserved if Bits 0-47 are modified..
   ///
   UINT64    Attributes;
   ///
-  /// Unicode string.
+  /// Null-terminated name of the partition.
   ///
   CHAR16    PartitionName[36];
 } EFI_PARTITION_ENTRY;