+++ /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/debug.h>
-#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/vm_cons.h>
-#include <geekos/pci.h>
-#include <geekos/gdt.h>
-
-
-
-#define TEST_PAGING 0
-#define TEST_PCI 1
-
-/*
- 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) {
- PrintBoth("\nToggling Speaker Port\n");
- *doIBuzz = (*doIBuzz + 1) % 2;
- } else if (key_press == KEY_F5) {
- PrintBoth("\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_VMCons();
- Init_Mem(bootInfo);
- Init_CRC32();
- Init_TSS();
- Init_Interrupts();
- Init_Scheduler();
- Init_Traps();
- // Init_Timer();
- Init_Keyboard();
- Init_VM(bootInfo);
- Init_Paging();
-
- // Init_IDE();
-
-
-
-
-
-
-
-
- PrintBoth("\n\nHello, Welcome to this horrid output-only serial interface\n");
- PrintBoth("Eventually, this will let us control the VMM\n\n");
-
- PrintBoth("\n\n===>");
-
-
-
-
-
-
- PrintBoth("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);
-
-
-
-
-
- PrintBoth("Next: setup GDT\n");
-
-
- if (TEST_PAGING) {
- int i = 0;
- for (i = 0; i < 1024; i++) {
- uint_t * addr = (uint_t *)0xa00000;
- uint_t foo = *addr;
-
- PrintBoth("Read From 0x%x=%d\n", (uint_t)addr, foo);
- }
-
-
- // Invalidate_PG((void *)0x2000);
-
- // VM_Test(bootInfo, 32);
- //VM_Test(bootInfo, 1536);
- }
-
-
- if (TEST_PCI) {
- Init_PCI();
-
-
- }
-
- while(1);
-
- /* Now this thread is done. */
- Exit(0);
-}