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>
8 #define SPEAKER_PORT 0x61
13 inline void VM_Out_Byte(ushort_t port, uchar_t value)
15 __asm__ __volatile__ (
18 : "a" (value), "Nd" (port)
23 * Read a byte from an I/O port.
25 inline uchar_t VM_In_Byte(ushort_t port)
29 __asm__ __volatile__ (
40 int IO_Read(ushort_t port, void * dst, uint_t length) {
44 for (i = 0; i < length; i++) {
45 *iter = VM_In_Byte(port);
54 int IO_Write(ushort_t port, void * src, uint_t length) {
59 for (i = 0; i < length; i++) {
60 VM_Out_Byte(port, *iter);
68 int IO_Read_to_Serial(ushort_t port, void * dst, uint_t length) {
69 PrintBoth("Input from Guest on port %d (0x%x) Length=%d\n", port, port, length);
75 char * bochs_debug_buf = NULL;
76 int bochs_debug_offset = 0;
79 int IO_BOCHS_debug(ushort_t port, void * src, uint_t length) {
80 if (!bochs_debug_buf) {
81 bochs_debug_buf = (char*)Malloc(1024);
84 bochs_debug_buf[bochs_debug_offset++] = *(char*)src;
86 if ((*(char*)src == '\n') || (bochs_debug_offset == 1023)) {
87 SerialPrint("BOCHS>%s", bochs_debug_buf);
88 memset(bochs_debug_buf, 0, 1024);
89 bochs_debug_offset = 0;
96 int IO_Write_to_Serial(ushort_t port, void * src, uint_t length) {
97 SerialPrint("Output from Guest on port %d (0x%x) Length=%d\n", port, port, length);
101 SerialPrint(">0x%.2x\n", *(char*)src);
104 SerialPrint(">0x%.4x\n", *(ushort_t*)src);
107 SerialPrint(">0x%.8x\n", *(uint_t*)src);
113 // SerialMemDump(src, length);
126 __asm__ __volatile__ (
132 PrintBoth("Starting To Buzz\n");
134 init=VM_In_Byte(SPEAKER_PORT);
137 VM_Out_Byte(SPEAKER_PORT, init|0x2);
138 for (j=0;j<1000000;j++) {
141 VM_Out_Byte(SPEAKER_PORT, init);
142 for (j=0;j<1000000;j++) {
153 int RunVMM(struct Boot_Info * bootInfo) {
155 struct vmm_os_hooks os_hooks;
156 struct vmm_ctrl_ops vmm_ops;
157 struct guest_info vm_info;
161 memset(&os_hooks, 0, sizeof(struct vmm_os_hooks));
162 memset(&vmm_ops, 0, sizeof(struct vmm_ctrl_ops));
163 memset(&vm_info, 0, sizeof(struct guest_info));
165 os_hooks.print_debug = &SerialPrint;
166 os_hooks.print_info = &Print;
167 os_hooks.print_trace = &SerialPrint;
168 os_hooks.allocate_pages = &Allocate_VMM_Pages;
169 os_hooks.free_page = &Free_VMM_Page;
170 os_hooks.malloc = &VMM_Malloc;
171 os_hooks.free = &VMM_Free;
172 os_hooks.vaddr_to_paddr = &Identity;
173 os_hooks.paddr_to_vaddr = &Identity;
177 Init_VMM(&os_hooks, &vmm_ops);
179 init_shadow_map(&(vm_info.mem_map));
180 init_shadow_page_state(&(vm_info.shdw_pg_state));
181 vm_info.page_mode = SHADOW_PAGING;
183 vm_info.cpu_mode = REAL;
185 init_vmm_io_map(&(vm_info.io_map));
190 // add_shared_mem_range(&(vm_info.mem_layout), 0, 0x800000, 0x10000);
191 // add_shared_mem_range(&(vm_info.mem_layout), 0, 0x1000000, 0);
193 rip = (ulong_t)(void*)&BuzzVM;
195 // rip = (addr_t)(void*)&exit_test;
198 rsp = (addr_t)Alloc_Page();
200 vm_info.vm_regs.rsp = (rsp +4092 );// - 0x2000;
204 //add_shared_mem_range(&(vm_info.mem_layout), 0x0, 0x1000, 0x100000);
205 // add_shared_mem_range(&(vm_info.mem_layout), 0x0, 0x100000, 0x0);
208 shadow_region_t *ent = Malloc(sizeof(shadow_region_t));;
209 init_shadow_region_physical(ent,0,0x100000,GUEST_REGION_PHYSICAL_MEMORY,
210 0x100000, HOST_REGION_PHYSICAL_MEMORY);
211 add_shadow_region(&(vm_info.mem_map),ent);
214 add_shadow_region_passthrough(&vm_info, 0x0, 0x100000, 0x100000);
216 hook_io_port(&(vm_info.io_map), 0x61, &IO_Read, &IO_Write);
217 hook_io_port(&(vm_info.io_map), 0x05, &IO_Read, &IO_Write_to_Serial);
221 vm_info.cs.base=0xf000;
222 vm_info.cs.limit=0xffff;
224 //vm_info.rip = 0xfff0;
227 vm_info.vm_regs.rsp = 0x0;
233 PrintDebug("Guest Size: %lu\n", bootInfo->guest_size);
235 struct guest_mem_layout * layout = (struct guest_mem_layout *)0x100000;
237 if (layout->magic != MAGIC_CODE) {
238 PrintDebug("Layout Magic Mismatch (0x%x)\n", layout->magic);
241 PrintDebug("%d layout regions\n", layout->num_regions);
243 region_start = (void *)&(layout->regions[layout->num_regions]);
245 PrintDebug("region start = 0x%x\n", region_start);
247 for (i = 0; i < layout->num_regions; i++) {
248 struct layout_region * reg = &(layout->regions[i]);
249 uint_t num_pages = (reg->length / PAGE_SIZE) + ((reg->length % PAGE_SIZE) ? 1 : 0);
250 void * guest_mem = Allocate_VMM_Pages(num_pages);
252 PrintDebug("Layout Region %d bytes\n", reg->length);
253 memcpy(guest_mem, region_start, reg->length);
255 SerialMemDump((unsigned char *)(guest_mem), 16);
257 add_shadow_region_passthrough(&vm_info, reg->final_addr, reg->final_addr + (num_pages * PAGE_SIZE), (addr_t)guest_mem);
259 PrintDebug("Adding Shadow Region (0x%x-0x%x) -> 0x%x\n", reg->final_addr, reg->final_addr + (num_pages * PAGE_SIZE), guest_mem);
261 region_start += reg->length;
264 add_shadow_region_passthrough(&vm_info, 0x0, 0xa0000, (addr_t)Allocate_VMM_Pages(160));
265 add_shadow_region_passthrough(&vm_info, 0xa0000, 0xc0000, 0xa0000);
266 if (add_shadow_region_passthrough(&vm_info, 0xc7000, 0xf0000, (addr_t)Allocate_VMM_Pages(41)) == -1) {
267 PrintDebug("Error adding shadow region\n");
270 print_shadow_map(&(vm_info.mem_map));
272 hook_io_port(&(vm_info.io_map), 0x61, &IO_Read, &IO_Write);
273 hook_io_port(&(vm_info.io_map), 0x05, &IO_Read, &IO_Write_to_Serial);
275 hook_io_port(&(vm_info.io_map), 0x20, &IO_Read, &IO_Write_to_Serial);
276 hook_io_port(&(vm_info.io_map), 0x21, &IO_Read, &IO_Write_to_Serial);
277 hook_io_port(&(vm_info.io_map), 0xa0, &IO_Read, &IO_Write_to_Serial);
278 hook_io_port(&(vm_info.io_map), 0xa1, &IO_Read, &IO_Write_to_Serial);
280 hook_io_port(&(vm_info.io_map), 0x400, &IO_Read, &IO_Write_to_Serial);
281 hook_io_port(&(vm_info.io_map), 0x401, &IO_Read, &IO_Write_to_Serial);
282 hook_io_port(&(vm_info.io_map), 0x402, &IO_Read, &IO_BOCHS_debug);
283 hook_io_port(&(vm_info.io_map), 0x403, &IO_Read, &IO_Write_to_Serial);
285 vm_info.rip = 0xfff0;
286 vm_info.vm_regs.rsp = 0x0;
289 PrintBoth("Initializing Guest (eip=0x%.8x) (esp=0x%.8x)\n", (uint_t)vm_info.rip,(uint_t)vm_info.vm_regs.rsp);
290 (vmm_ops).init_guest(&vm_info);
291 PrintBoth("Starting Guest\n");
293 (vmm_ops).start_guest(&vm_info);