public static Ssdt Create(SystemTableHeader header)
{
IoMemory region = IoMemory.MapPhysicalMemory(header.PostHeaderAddress,
header.PostHeaderLength,
true, false);
int sum = (header.Checksum + AcpiChecksum.Compute(region)) & 0xff;
if (sum != 0)
{
return(null);
}
return(new Ssdt(region, header));
}
public static Rsdp Parse(UIntPtr regionAddress,
uint regionBytes)
{
if (regionBytes >= 20)
{
IoMemory region = IoMemory.MapPhysicalMemory(regionAddress,
regionBytes,
true, false);
if (AcpiChecksum.Compute(region, 0, 20) == 0 &&
region.ReadAsciiZeroString(0, 8) == Rsdp.Id)
{
return(new Rsdp(region));
}
}
return(null);
}
