47 lines
1.3 KiB
C#
47 lines
1.3 KiB
C#
///////////////////////////////////////////////////////////////////////////////
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//
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// Microsoft Research Singularity
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// File: Ssdt.cs
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//
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namespace Microsoft.Singularity.Hal.Acpi
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{
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using System;
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using Microsoft.Singularity.Io;
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public class Ssdt
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{
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public const string Signature = "SSDT";
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private IoMemory region;
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private SystemTableHeader header;
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public Ssdt(IoMemory region, SystemTableHeader header)
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{
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this.region = region;
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this.header = header;
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}
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public IoMemory Region
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{
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get { return region; }
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}
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public static Ssdt Create(SystemTableHeader header)
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{
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IoMemory region = IoMemory.MapPhysicalMemory(header.PostHeaderAddress,
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header.PostHeaderLength,
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true, false);
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int sum = (header.Checksum + AcpiChecksum.Compute(region)) & 0xff;
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if (sum != 0)
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{
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return null;
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}
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return new Ssdt(region, header);
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}
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}
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}
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