/// <summary>
/// Setup the physical page manager
/// </summary>
public void Setup()
{
uint physMem = BootInfo.Header->InstalledPhysicalMemory;
PageCount = physMem / PageSize;
kmap = KernelMemoryMapManager.Allocate(PageCount * (uint)sizeof(Page), BootInfoMemoryType.PageFrameAllocator);
PageArray = (Page *)kmap.Start;
lastAllocatedPage = PageArray;
Memory.InitialKernelProtect_MakeWritable_BySize(kmap.Start, kmap.Size);
MemoryOperation.Clear4(kmap.Start, kmap.Size);
for (uint i = 0; i < PageCount; i++)
{
PageArray[i].PhysicalAddress = i * PageSize;
if (i != 0)
{
PageArray[i - 1].Next = &PageArray[i];
}
}
SetupFreeMemory();
for (uint i = 0; i < PageCount; i++)
{
if (!PageArray[i].Used)
{
PageArray[i].Status = PageStatus.Free;
}
}
}
public unsafe static void Main()
{
BootInfo.SetupStage1();
// Field needs to be explicit set, because InitializeAssembly is not invoked yet.
Memory.UseKernelWriteProtection = true;
Memory.InitialKernelProtect();
ManagedMemoy.InitializeGCMemory();
Mosa.Runtime.StartUp.InitializeAssembly();
//Mosa.Runtime.StartUp.InitializeRuntimeMetadata();
ApiContext.Current = new ApiHost();
// Setup some pseudo devices
Devices.InitStage1();
//Setup Output and Debug devices
Devices.InitStage2();
// Write first output
KernelMessage.WriteLine("<KERNEL:CONSOLE:BEGIN>");
KernelMessage.WriteLine("Starting Lonos Kernel...");
// Detect environment (Memory Maps, Video Mode, etc.)
BootInfo.SetupStage2();
KernelMemoryMapManager.Setup();
KernelMemoryMapManager.Allocate(0x1000 * 1000, BootInfoMemoryType.PageDirectory);
// Read own ELF-Headers and Sections
KernelElf.Setup();
// Initialize the embedded code (actually only a little proof of conecept code)
NativeCalls.Setup();
//InitialKernelProtect();
PageFrameManager.Setup();
KernelMessage.WriteLine("free: {0}", PageFrameManager.PagesAvailable);
PageFrameManager.AllocatePages(PageFrameRequestFlags.Default, 10);
KernelMessage.WriteLine("free: {0}", PageFrameManager.PagesAvailable);
RawVirtualFrameAllocator.Setup();
Memory.Setup();
// Now Memory Sub System is working. At this point it's valid
// to allocate memory dynamicly
Devices.InitFrameBuffer();
// Setup Programmable Interrupt Table
PIC.Setup();
// Setup Interrupt Descriptor Table
// Important Note: IDT depends on GDT. Never setup IDT before GDT.
IDTManager.Setup();
KernelMessage.WriteLine("Initialize Runtime Metadata");
Mosa.Runtime.StartUp.InitializeRuntimeMetadata();
KernelMessage.WriteLine("Performing some tests");
Tests();
KernelMessage.WriteLine("Enter Main Loop");
AppMain();
}
