/// <summary>
/// Initialize serialport
/// </summary>
public static unsafe void Init()
{
comports = new Comport[4];
comports[0] = new Comport();
comports[0].Name = "COM1";
comports[1] = new Comport();
comports[1].Name = "COM2";
comports[2] = new Comport();
comports[2].Name = "COM3";
comports[3] = new Comport();
comports[3].Name = "COM4";
readBda();
initDevice(0);
initDevice(1);
initDevice(2);
initDevice(3);
IRQ.SetHandler(3, Handler24);
IRQ.SetHandler(4, Handler13);
IOApicManager.CreateISARedirection(3, 3);
IOApicManager.CreateISARedirection(4, 4);
}
/// <summary>
/// Parses the MADT
/// </summary>
/// <param name="madt">The MADT</param>
private static void parseMADT(MADT *madt)
{
m_madt = madt;
LocalApic.SetLocalControllerAddress(madt->LocalControllerAddress);
m_intSourceOverrides = new ISAOverride[16];
for (uint i = 0; i < 16; i++)
{
m_intSourceOverrides[i].GSI = i;
m_intSourceOverrides[i].Polarity = IOApic.IOAPIC_REDIR_POLARITY_HIGH;
m_intSourceOverrides[i].Trigger = IOApic.IOAPIC_REDIR_TRIGGER_EDGE;
}
// After the flags field, the rest of the table contains a variable length of records
uint current = (uint)madt + (uint)sizeof(MADT);
uint end = current + madt->Header.Length - (uint)sizeof(MADT);
while (current < end)
{
ApicEntryHeader * header = (ApicEntryHeader *)current;
ApicEntryHeaderType type = (ApicEntryHeaderType)header->Type;
switch (type)
{
case ApicEntryHeaderType.LOCAL_APIC:
ApicLocalApic *localAPIC = (ApicLocalApic *)(current + sizeof(ApicEntryHeader));
Console.Write("[ACPI] Found CPU ");
Console.WriteNum(localAPIC->ProcessorID);
Console.Write('\n');
break;
case ApicEntryHeaderType.IO_APIC:
ApicIOApic *IOApicStruct = (ApicIOApic *)(current + sizeof(ApicEntryHeader));
Console.Write("[ACPI] Found IO APIC at ");
Console.WriteHex(IOApicStruct->IOAPICAddress);
Console.Write('\n');
IOApic IOApic = new IOApic(IOApicStruct->IOAPIC_ID, (void *)IOApicStruct->IOAPICAddress, IOApicStruct->GlobalSystemInterruptBase);
IOApicManager.Add(IOApic);
break;
case ApicEntryHeaderType.INTERRUPT_SOURCE_OVERRIDE:
ApicInterruptSourceOverride *intSourceOverride = (ApicInterruptSourceOverride *)(current + sizeof(ApicEntryHeader));
m_intSourceOverrides[intSourceOverride->IRQSource].GSI = intSourceOverride->GlobalSystemInterrupt;
m_intSourceOverrides[intSourceOverride->IRQSource].Polarity = (uint)(intSourceOverride->Flags & 0x3);
m_intSourceOverrides[intSourceOverride->IRQSource].Trigger = (uint)((intSourceOverride->Flags >> 2) & 0x3);
break;
}
current += header->Length;
}
}
/// <summary>
/// Initialize keyboard
/// </summary>
public static unsafe void Init()
{
m_fifo = new Fifo(250, true);
// Install the IRQ handler
IRQ.SetHandler(1, handler);
IOApicManager.CreateISARedirection(1, 1);
Node node = new Node();
node.Read = readImpl;
node.GetSize = getSizeImpl;
node.Flags = NodeFlags.DEVICE | NodeFlags.FILE;
RootPoint dev = new RootPoint("keyboard", node);
VFS.MountPointDevFS.AddEntry(dev);
}
