1 #include <geekos/vmm_stubs.h>
2 #include <palacios/vmm.h>
3 #include <geekos/debug.h>
4 #include <geekos/serial.h>
6 #include <geekos/screen.h>
7 #include <palacios/vmm_dev_mgr.h>
8 #include <devices/nvram.h>
9 #include <devices/timer.h>
11 #define SPEAKER_PORT 0x61
16 inline void VM_Out_Byte(ushort_t port, uchar_t value)
18 __asm__ __volatile__ (
21 : "a" (value), "Nd" (port)
26 * Read a byte from an I/O port.
28 inline uchar_t VM_In_Byte(ushort_t port)
32 __asm__ __volatile__ (
43 int IO_Read(ushort_t port, void * dst, uint_t length, void * priv_data) {
47 for (i = 0; i < length; i++) {
48 *iter = VM_In_Byte(port);
57 int IO_Write(ushort_t port, void * src, uint_t length, void * priv_data) {
62 for (i = 0; i < length; i++) {
63 VM_Out_Byte(port, *iter);
71 int IO_Read_to_Serial(ushort_t port, void * dst, uint_t length, void * priv_data) {
72 PrintBoth("Input from Guest on port %d (0x%x) Length=%d\n", port, port, length);
78 char * bochs_debug_buf = NULL;
79 int bochs_debug_offset = 0;
82 int IO_BOCHS_debug(ushort_t port, void * src, uint_t length, void * priv_data) {
83 if (!bochs_debug_buf) {
84 bochs_debug_buf = (char*)Malloc(1024);
87 bochs_debug_buf[bochs_debug_offset++] = *(char*)src;
89 if ((*(char*)src == 0xa) || (bochs_debug_offset == 1023)) {
90 SerialPrint("BOCHS>%s", bochs_debug_buf);
91 memset(bochs_debug_buf, 0, 1024);
92 bochs_debug_offset = 0;
99 int IO_Write_to_Serial(ushort_t port, void * src, uint_t length, void * priv_data) {
100 SerialPrint("Output from Guest on port %d (0x%x) Length=%d\n", port, port, length);
104 SerialPrint(">0x%.2x\n", *(char*)src);
107 SerialPrint(">0x%.4x\n", *(ushort_t*)src);
110 SerialPrint(">0x%.8x\n", *(uint_t*)src);
116 // SerialMemDump(src, length);
129 __asm__ __volatile__ (
135 PrintBoth("Starting To Buzz\n");
137 init=VM_In_Byte(SPEAKER_PORT);
140 VM_Out_Byte(SPEAKER_PORT, init|0x2);
141 for (j=0;j<1000000;j++) {
144 VM_Out_Byte(SPEAKER_PORT, init);
145 for (j=0;j<1000000;j++) {
156 int RunVMM(struct Boot_Info * bootInfo) {
158 struct vmm_os_hooks os_hooks;
159 struct vmm_ctrl_ops vmm_ops;
160 struct guest_info vm_info;
164 memset(&os_hooks, 0, sizeof(struct vmm_os_hooks));
165 memset(&vmm_ops, 0, sizeof(struct vmm_ctrl_ops));
166 memset(&vm_info, 0, sizeof(struct guest_info));
168 os_hooks.print_debug = &SerialPrint;
169 os_hooks.print_info = &Print;
170 os_hooks.print_trace = &SerialPrint;
171 os_hooks.allocate_pages = &Allocate_VMM_Pages;
172 os_hooks.free_page = &Free_VMM_Page;
173 os_hooks.malloc = &VMM_Malloc;
174 os_hooks.free = &VMM_Free;
175 os_hooks.vaddr_to_paddr = &Identity;
176 os_hooks.paddr_to_vaddr = &Identity;
180 Init_VMM(&os_hooks, &vmm_ops);
182 init_shadow_map(&(vm_info.mem_map));
183 init_shadow_page_state(&(vm_info.shdw_pg_state));
184 vm_info.page_mode = SHADOW_PAGING;
186 vm_info.cpu_mode = REAL;
188 init_irq_map(&(vm_info.irq_map));
189 init_vmm_io_map(&(vm_info.io_map));
190 init_interrupt_state(&(vm_info.intr_state));
192 dev_mgr_init(&(vm_info.dev_mgr));
196 // add_shared_mem_range(&(vm_info.mem_layout), 0, 0x800000, 0x10000);
197 // add_shared_mem_range(&(vm_info.mem_layout), 0, 0x1000000, 0);
199 rip = (ulong_t)(void*)&BuzzVM;
201 // rip = (addr_t)(void*)&exit_test;
204 rsp = (addr_t)Alloc_Page();
206 vm_info.vm_regs.rsp = (rsp +4092 );// - 0x2000;
210 //add_shared_mem_range(&(vm_info.mem_layout), 0x0, 0x1000, 0x100000);
211 // add_shared_mem_range(&(vm_info.mem_layout), 0x0, 0x100000, 0x0);
214 shadow_region_t *ent = Malloc(sizeof(shadow_region_t));;
215 init_shadow_region_physical(ent,0,0x100000,GUEST_REGION_PHYSICAL_MEMORY,
216 0x100000, HOST_REGION_PHYSICAL_MEMORY);
217 add_shadow_region(&(vm_info.mem_map),ent);
220 add_shadow_region_passthrough(&vm_info, 0x0, 0x100000, 0x100000);
222 hook_io_port(&(vm_info.io_map), 0x61, &IO_Read, &IO_Write, NULL);
223 hook_io_port(&(vm_info.io_map), 0x05, &IO_Read, &IO_Write_to_Serial, NULL);
227 vm_info.cs.base=0xf000;
228 vm_info.cs.limit=0xffff;
230 //vm_info.rip = 0xfff0;
233 vm_info.vm_regs.rsp = 0x0;
239 PrintDebug("Guest Size: %lu\n", bootInfo->guest_size);
241 struct guest_mem_layout * layout = (struct guest_mem_layout *)0x100000;
243 if (layout->magic != MAGIC_CODE) {
244 PrintDebug("Layout Magic Mismatch (0x%x)\n", layout->magic);
247 PrintDebug("%d layout regions\n", layout->num_regions);
249 region_start = (void *)&(layout->regions[layout->num_regions]);
251 PrintDebug("region start = 0x%x\n", region_start);
253 for (i = 0; i < layout->num_regions; i++) {
254 struct layout_region * reg = &(layout->regions[i]);
255 uint_t num_pages = (reg->length / PAGE_SIZE) + ((reg->length % PAGE_SIZE) ? 1 : 0);
256 void * guest_mem = Allocate_VMM_Pages(num_pages);
258 PrintDebug("Layout Region %d bytes\n", reg->length);
259 memcpy(guest_mem, region_start, reg->length);
261 SerialMemDump((unsigned char *)(guest_mem), 16);
263 add_shadow_region_passthrough(&vm_info, reg->final_addr, reg->final_addr + (num_pages * PAGE_SIZE), (addr_t)guest_mem);
265 PrintDebug("Adding Shadow Region (0x%x-0x%x) -> 0x%x\n", reg->final_addr, reg->final_addr + (num_pages * PAGE_SIZE), guest_mem);
267 region_start += reg->length;
270 add_shadow_region_passthrough(&vm_info, 0xc0000, 0xc8000, 0xc0000);
271 add_shadow_region_passthrough(&vm_info, 0x0, 0xa0000, (addr_t)Allocate_VMM_Pages(160));
272 add_shadow_region_passthrough(&vm_info, 0xa0000, 0xc0000, 0xa0000);
273 if (add_shadow_region_passthrough(&vm_info, 0xc8000, 0xf0000, (addr_t)Allocate_VMM_Pages(40)) == -1) {
274 PrintDebug("Error adding shadow region\n");
277 print_shadow_map(&(vm_info.mem_map));
279 hook_io_port(&(vm_info.io_map), 0x61, &IO_Read, &IO_Write, NULL);
280 hook_io_port(&(vm_info.io_map), 0x05, &IO_Read, &IO_Write_to_Serial, NULL);
282 hook_io_port(&(vm_info.io_map), 0x20, &IO_Read, &IO_Write_to_Serial, NULL);
283 hook_io_port(&(vm_info.io_map), 0x21, &IO_Read, &IO_Write_to_Serial, NULL);
284 hook_io_port(&(vm_info.io_map), 0xa0, &IO_Read, &IO_Write_to_Serial, NULL);
285 hook_io_port(&(vm_info.io_map), 0xa1, &IO_Read, &IO_Write_to_Serial, NULL);
287 hook_io_port(&(vm_info.io_map), 0x400, &IO_Read, &IO_Write_to_Serial, NULL);
288 hook_io_port(&(vm_info.io_map), 0x401, &IO_Read, &IO_Write_to_Serial, NULL);
289 hook_io_port(&(vm_info.io_map), 0x402, &IO_Read, &IO_BOCHS_debug, NULL);
290 hook_io_port(&(vm_info.io_map), 0x403, &IO_Read, &IO_Write_to_Serial, NULL);
293 struct vm_device * nvram = create_nvram();
294 struct vm_device * timer = create_timer();
296 attach_device(&(vm_info), nvram);
297 //attach_device(&(vm_info), timer);
299 PrintDebugDevMgr(&(vm_info.dev_mgr));
307 vm_info.rip = 0xfff0;
308 vm_info.vm_regs.rsp = 0x0;
311 PrintBoth("Initializing Guest (eip=0x%.8x) (esp=0x%.8x)\n", (uint_t)vm_info.rip,(uint_t)vm_info.vm_regs.rsp);
312 (vmm_ops).init_guest(&vm_info);
313 PrintBoth("Starting Guest\n");
315 (vmm_ops).start_guest(&vm_info);