--- /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>
+ * $Revision: 1.2 $
+ *
+ * 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/gdt.h>
+
+
+/*
+ static inline unsigned int cpuid_ecx(unsigned int op)
+ {
+ unsigned int eax, ecx;
+
+ __asm__("cpuid"
+ : "=a" (eax), "=c" (ecx)
+ : "0" (op)
+ : "bx", "dx" );
+
+ return ecx;
+ }
+*/
+
+
+
+extern void Get_MSR(ulong_t msr, unsigned int *val1, unsigned int *val2);
+extern void Set_MSR(ulong_t msr, ulong_t val1, ulong_t val2);
+extern uint_t Get_EIP();
+extern uint_t Get_ESP();
+extern uint_t Get_EBP();
+
+
+
+extern void Invalidate_PG(void * addr);
+
+
+int foo=42;
+
+#define SPEAKER_PORT 0x61
+
+
+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;
+}
+
+
+extern void MyBuzzVM();
+
+#define MYBUZZVM_START MyBuzzVM
+#define MYBUZZVM_LEN 0x3d
+
+void BuzzVM()
+{
+ int x;
+ int j;
+ unsigned char init;
+
+
+ init=MyIn_Byte(SPEAKER_PORT);
+
+ while (1) {
+ MyOut_Byte(SPEAKER_PORT, init|0x2);
+ for (j=0;j<1000000;j++) {
+ x+=j;
+ }
+ MyOut_Byte(SPEAKER_PORT, init);
+ for (j=0;j<1000000;j++) {
+ x+=j;
+ }
+ }
+}
+
+
+
+extern void RunVM();
+
+int vmRunning = 0;
+
+void RunVM() {
+ vmRunning = 1;
+
+ while(1);
+}
+
+
+
+
+
+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 Hello(ulong_t arg)
+{
+ char *b="hello ";
+ char byte;
+ short port=0xe9;
+ int i;
+ while(1){
+ for (i=0;i<6;i++) {
+ byte=b[i];
+ __asm__ __volatile__ ("outb %b0, %w1" : : "a"(byte), "Nd"(port) );
+ }
+ }
+}
+
+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;
+
+
+
+
+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)
+{
+ struct Kernel_Thread * key_thread;
+ struct Kernel_Thread * spkr_thread;
+
+
+
+ ulong_t doIBuzz = 0;
+
+ Init_BSS();
+ Init_Screen();
+ InitSerial();
+ Init_Mem(bootInfo);
+ Init_CRC32();
+ Init_TSS();
+ Init_Interrupts();
+ Init_Scheduler();
+ Init_Traps();
+ // Init_Timer();
+ Init_Keyboard();
+ Init_VM(bootInfo);
+ Init_Paging();
+
+ // Init_IDE();
+
+
+
+
+
+
+
+
+ SerialPrint("\n\nHello, Welcome to this horrid output-only serial interface\n");
+ SerialPrint("Eventually, this will let us control the VMM\n\n");
+
+ SerialPrint("\n\n===>");
+
+
+
+
+
+
+ SerialPrintLevel(1000,"Launching 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);
+
+
+
+
+
+ SerialPrintLevel(1000,"Next: setup GDT\n");
+
+ {
+ int i = 0;
+ for (i = 0; i < 1024; i++) {
+ uint_t * addr = (uint_t *)0xa00000;
+ uint_t foo = *addr;
+
+ SerialPrint("Read From 0x%x=%d\n", (uint_t)addr, foo);
+ }
+
+ }
+ // Invalidate_PG((void *)0x2000);
+
+ // VM_Test(bootInfo, 32);
+ //VM_Test(bootInfo, 1536);
+
+ while(1);
+
+ /* Now this thread is done. */
+ Exit(0);
+}
