X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=geekos%2Fsrc%2Fgeekos%2Fmain.c;fp=geekos%2Fsrc%2Fgeekos%2Fmain.c;h=5d71341cb32d87814c48ecb588f08a9e73eb608c;hp=0000000000000000000000000000000000000000;hb=ddc16b0737cf58f7aa90a69c6652cdf4090aec51;hpb=626595465a2c6987606a6bc697df65130ad8c2d3

diff --git a/geekos/src/geekos/main.c b/geekos/src/geekos/main.c
new file mode 100644
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+/*
+ * 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);
+}