--- /dev/null
+/*
+ * GeekOS C code entry point
+ * Copyright (c) 2001,2003,2004 David H. Hovemeyer <daveho@cs.umd.edu>
+ * Copyright (c) 2003, Jeffrey K. Hollingsworth <hollings@cs.umd.edu>
+ * Copyright (c) 2004, Iulian Neamtiu <neamtiu@cs.umd.edu>
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
+ * $Revision: 1.47 $
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "COPYING".
+ */
+
+#include <geekos/bootinfo.h>
+#include <geekos/string.h>
+#include <geekos/screen.h>
+#include <geekos/mem.h>
+#include <geekos/crc32.h>
+#include <geekos/tss.h>
+#include <geekos/int.h>
+#include <geekos/kthread.h>
+#include <geekos/trap.h>
+#include <geekos/timer.h>
+#include <geekos/keyboard.h>
+#include <geekos/io.h>
+#include <geekos/serial.h>
+#include <geekos/reboot.h>
+#include <geekos/mem.h>
+#include <geekos/paging.h>
+#include <geekos/ide.h>
+#include <geekos/malloc.h>
+
+#include <geekos/debug.h>
+
+
+#include <geekos/vm.h>
+#include <geekos/gdt.h>
+
+#include <geekos/vmm_stubs.h>
+
+#include <geekos/pci.h>
+
+
+#include <geekos/net.h>
+
+
+#define SPEAKER_PORT 0x61
+
+
+
+
+void Spin()
+{
+ // hack - competing thread
+ while (1) {};
+
+}
+
+
+void Buzz(unsigned delay, unsigned num)
+{
+ volatile int x;
+ int i,j;
+ unsigned char init;
+
+ init=In_Byte(SPEAKER_PORT);
+
+ for (i=0;i<num;i++) {
+ Out_Byte(SPEAKER_PORT, init|0x2);
+ for (j=0;j<delay;j++) {
+ x+=j;
+ }
+ Out_Byte(SPEAKER_PORT, init);
+ for (j=0;j<delay;j++) {
+ x+=j;
+ }
+ }
+}
+
+inline void MyOut_Byte(ushort_t port, uchar_t value)
+{
+ __asm__ __volatile__ (
+ "outb %b0, %w1"
+ :
+ : "a" (value), "Nd" (port)
+ );
+}
+
+/*
+ * Read a byte from an I/O port.
+ */
+inline uchar_t MyIn_Byte(ushort_t port)
+{
+ uchar_t value;
+
+ __asm__ __volatile__ (
+ "inb %w1, %b0"
+ : "=a" (value)
+ : "Nd" (port)
+ );
+
+ return value;
+}
+
+
+
+
+
+
+
+void Buzzer(ulong_t arg) {
+ ulong_t *doIBuzz = (ulong_t*)arg;
+ while (1) {
+ // Quick and dirty hack to save my hearing...
+ // I'm not too worried about timing, so I'll deal with concurrency later...
+ if (*doIBuzz == 1) {
+ Buzz(1000000, 10);
+ }
+ }
+
+}
+
+
+
+
+
+void Keyboard_Listener(ulong_t arg) {
+ ulong_t * doIBuzz = (ulong_t*)arg;
+ Keycode key_press;
+
+ Print("Press F4 to turn on/off the speaker\n");
+
+ while ((key_press = Wait_For_Key())) {
+ if (key_press == KEY_F4) {
+ Print("\nToggling Speaker Port\n");
+ SerialPrintLevel(100,"\nToggling Speaker Port\n");
+ *doIBuzz = (*doIBuzz + 1) % 2;
+ } else if (key_press == KEY_F5) {
+ Print("\nMachine Restart\n");
+ SerialPrintLevel(100,"\nMachine Restart\n");
+ machine_real_restart();
+ }
+ }
+ return;
+}
+
+
+
+extern char BSS_START, BSS_END;
+
+extern char end;
+
+
+/* This is an ugly hack to get at the VM memory */
+ulong_t vm_range_start;
+ulong_t vm_range_end;
+ulong_t guest_kernel_start;
+ulong_t guest_kernel_end;
+/* ** */
+
+
+int AllocateAndMapPagesForRange(uint_t start, uint_t length, pte_t template_pte)
+{
+ uint_t address;
+
+ for (address=start;address<start+length;address+=PAGE_SIZE) {
+ void *page;
+ pte_t pte = template_pte;
+
+ page=Alloc_Page();
+ KASSERT(page);
+
+ pte.pageBaseAddr=PAGE_ALLIGNED_ADDR(page);
+
+ KASSERT(MapPage((void*)address,&pte,1));
+ }
+
+ return 0;
+}
+
+
+
+/*
+ * Kernel C code entry point.
+ * Initializes kernel subsystems, mounts filesystems,
+ * and spawns init process.
+ */
+void Main(struct Boot_Info* bootInfo)
+{
+
+
+ //Out_Byte(0x1234,5);
+ //Out_Byte(0x1234,5);
+
+ Init_BSS();
+ Init_Screen();
+
+ Init_Serial();
+
+ /* {
+ extern char BSS_START, BSS_END;
+
+ SerialPrint("BSS 0x%x->0x%x\n", &BSS_START, &BSS_END);
+
+ }*/
+
+
+ // SerialPrint("Guest Mem Dump at 0x%x\n", 0x100000);
+ //SerialMemDump((unsigned char *)(0x100000), 261 * 1024);
+
+ Init_Mem(bootInfo);
+ Init_CRC32();
+ Init_TSS();
+ Init_Interrupts();
+ Init_Scheduler();
+ Init_Traps();
+ Init_Timer();
+ Init_Keyboard();
+ Init_VM(bootInfo);
+ Init_Paging();
+
+ //Init_PCI();
+
+
+
+ // Init_Network();
+
+
+ // Init_IDE();
+
+ // Print("Done; stalling\n");
+
+
+
+#if 0
+ SerialPrint("Dumping VM kernel Code (first 128 bytes @ 0x%x)\n", 0x100000);
+ SerialMemDump((unsigned char *)0x100000, 256);
+ /*
+ SerialPrint("Dumping kernel Code (first 512 bytes @ 0x%x)\n",KERNEL_START);
+ SerialMemDump((unsigned char *)VM_KERNEL_START, 512);
+ */
+#endif
+
+
+#if 1
+ struct Kernel_Thread *spin_thread;
+
+ spin_thread=Start_Kernel_Thread(Spin,0,PRIORITY_NORMAL,false);
+
+#endif
+
+#if 0
+ {
+
+ struct Kernel_Thread * key_thread;
+ struct Kernel_Thread * spkr_thread;
+
+ ulong_t doIBuzz = 0;
+
+ SerialPrint("Dumping BIOS code ffff0-fffff\n\n");
+ SerialMemDump((unsigned char *)0x10fff0, 16);
+ /*
+ SerialPrint("Dumping kernel Code (first 512 bytes @ 0x%x)\n",KERNEL_START);
+ SerialMemDump((unsigned char *)VM_KERNEL_START, 512);
+ */
+
+ SerialPrint("Noisemaker and keyboard listener threads\n");
+ key_thread = Start_Kernel_Thread(Keyboard_Listener, (ulong_t)&doIBuzz, PRIORITY_NORMAL, false);
+ spkr_thread = Start_Kernel_Thread(Buzzer, (ulong_t)&doIBuzz, PRIORITY_NORMAL, false);
+ }
+#endif
+
+
+ {
+ RunVMM(bootInfo);
+ }
+
+
+ SerialPrint("RunVMM returned, spinning\n");
+ while (1) {}
+
+
+ TODO("Write a Virtual Machine Monitor");
+
+
+ Exit(0);
+}
