2 * GeekOS C code entry point
3 * Copyright (c) 2001,2003,2004 David H. Hovemeyer <daveho@cs.umd.edu>
4 * Copyright (c) 2003, Jeffrey K. Hollingsworth <hollings@cs.umd.edu>
5 * Copyright (c) 2004, Iulian Neamtiu <neamtiu@cs.umd.edu>
8 * This is free software. You are permitted to use,
9 * redistribute, and modify it as specified in the file "COPYING".
12 #include <geekos/bootinfo.h>
13 #include <geekos/string.h>
14 #include <geekos/screen.h>
15 #include <geekos/mem.h>
16 #include <geekos/crc32.h>
17 #include <geekos/tss.h>
18 #include <geekos/int.h>
19 #include <geekos/kthread.h>
20 #include <geekos/trap.h>
21 #include <geekos/timer.h>
22 #include <geekos/keyboard.h>
23 #include <geekos/io.h>
24 #include <geekos/serial.h>
25 #include <geekos/reboot.h>
26 #include <geekos/mem.h>
27 #include <geekos/paging.h>
28 #include <geekos/ide.h>
29 #include <geekos/malloc.h>
31 #include <geekos/debug.h>
34 #include <geekos/vm.h>
35 #include <geekos/gdt.h>
37 #include <geekos/vmm_stubs.h>
39 #include <geekos/pci.h>
43 #define SPEAKER_PORT 0x61
48 // hack - competing thread
54 void Buzz(unsigned delay, unsigned num)
60 init=In_Byte(SPEAKER_PORT);
63 Out_Byte(SPEAKER_PORT, init|0x2);
64 for (j=0;j<delay;j++) {
67 Out_Byte(SPEAKER_PORT, init);
68 for (j=0;j<delay;j++) {
74 inline void MyOut_Byte(ushort_t port, uchar_t value)
76 __asm__ __volatile__ (
79 : "a" (value), "Nd" (port)
84 * Read a byte from an I/O port.
86 inline uchar_t MyIn_Byte(ushort_t port)
90 __asm__ __volatile__ (
105 void Buzzer(ulong_t arg) {
106 ulong_t *doIBuzz = (ulong_t*)arg;
108 // Quick and dirty hack to save my hearing...
109 // I'm not too worried about timing, so I'll deal with concurrency later...
121 void Keyboard_Listener(ulong_t arg) {
122 ulong_t * doIBuzz = (ulong_t*)arg;
125 Print("Press F4 to turn on/off the speaker\n");
127 while ((key_press = Wait_For_Key())) {
128 if (key_press == KEY_F4) {
129 Print("\nToggling Speaker Port\n");
130 SerialPrintLevel(100,"\nToggling Speaker Port\n");
131 *doIBuzz = (*doIBuzz + 1) % 2;
132 } else if (key_press == KEY_F5) {
133 Print("\nMachine Restart\n");
134 SerialPrintLevel(100,"\nMachine Restart\n");
135 machine_real_restart();
143 extern char BSS_START, BSS_END;
148 /* This is an ugly hack to get at the VM memory */
149 ulong_t vm_range_start;
150 ulong_t vm_range_end;
151 ulong_t guest_kernel_start;
152 ulong_t guest_kernel_end;
156 int AllocateAndMapPagesForRange(uint_t start, uint_t length, pte_t template_pte)
160 for (address=start;address<start+length;address+=PAGE_SIZE) {
162 pte_t pte = template_pte;
167 pte.pageBaseAddr=PAGE_ALLIGNED_ADDR(page);
169 KASSERT(MapPage((void*)address,&pte,1));
178 * Kernel C code entry point.
179 * Initializes kernel subsystems, mounts filesystems,
180 * and spawns init process.
182 void Main(struct Boot_Info* bootInfo)
186 //Out_Byte(0x1234,5);
187 //Out_Byte(0x1234,5);
195 extern char BSS_START, BSS_END;
197 SerialPrint("BSS 0x%x->0x%x\n", &BSS_START, &BSS_END);
202 // SerialPrint("Guest Mem Dump at 0x%x\n", 0x100000);
203 //SerialMemDump((unsigned char *)(0x100000), 261 * 1024);
222 // Print("Done; stalling\n");
227 SerialPrint("Dumping VM kernel Code (first 128 bytes @ 0x%x)\n", 0x100000);
228 SerialMemDump((unsigned char *)0x100000, 256);
230 SerialPrint("Dumping kernel Code (first 512 bytes @ 0x%x)\n",KERNEL_START);
231 SerialMemDump((unsigned char *)VM_KERNEL_START, 512);
237 struct Kernel_Thread *spin_thread;
239 spin_thread=Start_Kernel_Thread(Spin,0,PRIORITY_NORMAL,false);
246 struct Kernel_Thread * key_thread;
247 struct Kernel_Thread * spkr_thread;
251 SerialPrint("Dumping BIOS code ffff0-fffff\n\n");
252 SerialMemDump((unsigned char *)0x10fff0, 16);
254 SerialPrint("Dumping kernel Code (first 512 bytes @ 0x%x)\n",KERNEL_START);
255 SerialMemDump((unsigned char *)VM_KERNEL_START, 512);
258 SerialPrint("Noisemaker and keyboard listener threads\n");
259 key_thread = Start_Kernel_Thread(Keyboard_Listener, (ulong_t)&doIBuzz, PRIORITY_NORMAL, false);
260 spkr_thread = Start_Kernel_Thread(Buzzer, (ulong_t)&doIBuzz, PRIORITY_NORMAL, false);
269 SerialPrint("RunVMM returned, spinning\n");
273 TODO("Write a Virtual Machine Monitor");