+++ /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: 1.1 $
- *
- * 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/vmx.h>
-#include <geekos/vmcs.h>
-
-#include <geekos/gdt.h>
-
-#include <geekos/vmm_sizes.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();
-
-
-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);
-}
-
-
-
-
-extern uint_t VMCS_STORE();
-extern uint_t VMCS_READ();
-
-
-
-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;
-
-
-void VM_Thread(ulong_t arg)
-{
- int ret;
- struct VMDescriptor *vm = (struct VMDescriptor *) arg;
-
- SerialPrintLevel(100,"VM_Thread: Launching VM with (entry_ip=%x, exit_eip=%x, guest_esp=%x)\n",
- vm->entry_ip, vm->exit_eip, vm->guest_esp);
-
- SerialPrintLevel(100,"VM_Thread: You should see nothing further from me\n");
-
-
- ret = VMLaunch(vm);
-
-
- SerialPrintLevel(100,"VM_Thread: uh oh...");
-
- switch (ret) {
- case VMX_SUCCESS:
- SerialPrintLevel(100,"Normal VMExit Occurred\n");
- break;
- case VMX_FAIL_INVALID:
- SerialPrintLevel(100,"Possibile invalid VMCS (%.8x)\n", ret);
- break;
- case VMX_FAIL_VALID:
- SerialPrintLevel(100,"Valid VMCS, errorcode recorded in VMCS\n");
- break;
- case VMM_ERROR:
- SerialPrintLevel(100,"VMM Error\n");
- break;
- default:
- SerialPrintLevel(100,"VMLaunch returned unknown error (%.8x)\n", ret);
- break;
- }
-
- SerialPrintLevel(100,"VM_Thread: Spinning\n");
- while (1) {}
-
-}
-
-
-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;
- struct Kernel_Thread * vm_thread;
- struct VMDescriptor vm;
-
- 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();
-
-
-
-
-
-
-#if 1
- SerialPrint("Dumping VMXASSIST Code (first 512 bytes @ 0x%x)\n",VMXASSIST_START);
- SerialMemDump((unsigned char *)VMXASSIST_START, 512);
- SerialPrint("Dumping ROMBIOS Code (first 512 bytes @ 0x%x)\n",BIOS_START);
- SerialMemDump((unsigned char *)BIOS_START, 512);
- SerialPrint("Dumping ROMBIOS Code (Second copy) (first 512 bytes @ 0x%x)\n",BIOS2_START);
- SerialMemDump((unsigned char *)BIOS2_START, 512);
- SerialPrint("Dumping VGABIOS Code (first 512 bytes @ 0x%x)\n",VGA_BIOS_START);
- SerialMemDump((unsigned char *)VGA_BIOS_START, 512);
-
-#endif
-
-
-
- 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(100,"Initializing VMX\n");
- PrintBoth("Initializing VMX\n");
- VmxOnRegion * vmxRegion = InitVMX();
-
- if (vmxRegion==NULL) {
- PrintBoth("VMX Cannot be turned on. Halted.\n");
- while (1) {}
- }
-
-
-
- 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);
-
-
-// Enable this to run the simple buzzer VM
-#if 0
-
- // Put the entry around 0x10000, where the geekos kernel used to live
- vm.entry_ip=(uint_t)0x10000;
- vm.exit_eip=0;
- // Put the stack as the last thing in the VM partition
- vm.guest_esp=(uint_t)START_OF_VM+VM_SIZE-1;
-
-
- memcpy(vm.entry_ip,MYBUZZVM_START,MYBUZZVM_LEN);
-
- SerialPrintLevel(1000,"VM-Launching MyBuzzVM after copy to 0x10000\n");
-
- vm_thread = Start_Kernel_Thread(VM_Thread, (ulong_t)&vm,PRIORITY_NORMAL,false);
-
-#else
-
-#if 0
-
- // write the hello VM down to where we would usually put
- // vmxassist, and see if it can talk to us
- vm.entry_ip=(uint_t)START_OF_VM+0xd000000;
- vm.exit_eip=0;
- // Put the stack as the last thing in the VM partition
- vm.guest_esp=(uint_t)START_OF_VM+VM_SIZE-1;
-
-
- memcpy((void*)(vm.entry_ip),Hello,200); // 200 should be plenty
-
- SerialPrintLevel(1000,"VM-Launching HelloVM after copy to 0xd000000\n");
-
- vm_thread = Start_Kernel_Thread(VM_Thread, (ulong_t)&vm,PRIORITY_NORMAL,false);
-
-#else
- // Try to launch a real VM
-
- // First we will copy down VMXAssist, then we'll launch that
- // and see if it can handle the system bios
-
- // We now map pages of physical memory into where we are going
- // to slap the vmxassist, bios, and vgabios code
- pte_t template_pte;
-
- template_pte.present=1;
- template_pte.flags=VM_WRITE|VM_READ|VM_USER|VM_EXEC;
- template_pte.accessed=0;
- template_pte.dirty=0;
- template_pte.pteAttribute=0;
- template_pte.globalPage=0;
- template_pte.kernelInfo=0;
-
- SerialPrintLevel(1000,"Allocating Pages for VMXASSIST, BIOS, and VGA BIOS\n");
-
-#define SEGLEN (1024*64)
-
- AllocateAndMapPagesForRange(START_OF_VM+0xd0000, SEGLEN, template_pte);
- AllocateAndMapPagesForRange(START_OF_VM+0xf0000, SEGLEN, template_pte);
- AllocateAndMapPagesForRange(START_OF_VM+0xc0000, SEGLEN, template_pte);
-
- // Now we should be copying into actual memory
-
- SerialPrintLevel(1000,"Copying VMXASSIST code from %x to %x (%d bytes)\n", VMXASSIST_START, START_OF_VM+0xd0000,VMXASSIST_LENGTH);
- memcpy((char*)(START_OF_VM+0xd0000),(char*)VMXASSIST_START,VMXASSIST_LENGTH);
- SerialPrintLevel(1000,"Copying BIOS (2nd copy) code from %x to %x (%d bytes)\n", BIOS2_START, START_OF_VM+0xf0000,BIOS_LENGTH);
- memcpy((char*)(START_OF_VM+0xf0000),(char*)BIOS2_START,BIOS_LENGTH);
- SerialPrintLevel(1000,"Copying VGA BIOS code from %x to %x (%d bytes)\n", VGA_BIOS_START, START_OF_VM+0xc0000,VGA_BIOS_LENGTH);
- memcpy((char *)(START_OF_VM+0xc0000),(char*)VGA_BIOS_START,VGA_BIOS_LENGTH);
-
- // jump into vmxassist
- vm.entry_ip=(uint_t)0xd0000;
- vm.exit_eip=0;
- // Put the stack at 512K
- vm.guest_esp=(uint_t)START_OF_VM+1024*512;
-
- SerialPrintLevel(1000,"VM-Launching to vmxassist for boot\n");
-
- vm_thread = Start_Kernel_Thread(VM_Thread, (ulong_t)&vm,PRIORITY_NORMAL,false);
-
-
- SerialPrintLevel(1000,"Next: setup GDT\n");
-
-#endif
-#endif
-
-
- TODO("Write a Virtual Machine Monitor");
-
-
- /* Now this thread is done. */
- Exit(0);
-}
-
-
