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vmstate: port armv7m nvic
[qemu/agraf.git] / hw / pc.c
blob6939c04560e7e3b840920eb39e15ba0ab9488bf8
1 /*
2 * QEMU PC System Emulator
3 *
4 * Copyright (c) 2003-2004 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "hw.h"
25 #include "pc.h"
26 #include "apic.h"
27 #include "fdc.h"
28 #include "ide.h"
29 #include "pci.h"
30 #include "vmware_vga.h"
31 #include "monitor.h"
32 #include "fw_cfg.h"
33 #include "hpet_emul.h"
34 #include "smbios.h"
35 #include "loader.h"
36 #include "elf.h"
37 #include "multiboot.h"
38 #include "mc146818rtc.h"
39 #include "msix.h"
40 #include "sysbus.h"
41 #include "sysemu.h"
42 #include "blockdev.h"
43 #include "ui/qemu-spice.h"
44
45 /* output Bochs bios info messages */
46 //#define DEBUG_BIOS
47
48 /* debug PC/ISA interrupts */
49 //#define DEBUG_IRQ
50
51 #ifdef DEBUG_IRQ
52 #define DPRINTF(fmt, ...) \
53 do { printf("CPUIRQ: " fmt , ## __VA_ARGS__); } while (0)
54 #else
55 #define DPRINTF(fmt, ...)
56 #endif
57
58 #define BIOS_FILENAME "bios.bin"
59
60 #define PC_MAX_BIOS_SIZE (4 * 1024 * 1024)
61
62 /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
63 #define ACPI_DATA_SIZE 0x10000
64 #define BIOS_CFG_IOPORT 0x510
65 #define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0)
66 #define FW_CFG_SMBIOS_ENTRIES (FW_CFG_ARCH_LOCAL + 1)
67 #define FW_CFG_IRQ0_OVERRIDE (FW_CFG_ARCH_LOCAL + 2)
68 #define FW_CFG_E820_TABLE (FW_CFG_ARCH_LOCAL + 3)
69 #define FW_CFG_HPET (FW_CFG_ARCH_LOCAL + 4)
70
71 #define MSI_ADDR_BASE 0xfee00000
72
73 #define E820_NR_ENTRIES 16
74
75 struct e820_entry {
76 uint64_t address;
77 uint64_t length;
78 uint32_t type;
79 } __attribute((__packed__, __aligned__(4)));
80
81 struct e820_table {
82 uint32_t count;
83 struct e820_entry entry[E820_NR_ENTRIES];
84 } __attribute((__packed__, __aligned__(4)));
85
86 static struct e820_table e820_table;
87 struct hpet_fw_config hpet_cfg = {.count = UINT8_MAX};
88
89 void isa_irq_handler(void *opaque, int n, int level)
90 {
91 IsaIrqState *isa = (IsaIrqState *)opaque;
92
93 DPRINTF("isa_irqs: %s irq %d\n", level? "raise" : "lower", n);
94 if (n < 16) {
95 qemu_set_irq(isa->i8259[n], level);
96 }
97 if (isa->ioapic)
98 qemu_set_irq(isa->ioapic[n], level);
99 };
100
101 static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
102 {
103 }
104
105 /* MSDOS compatibility mode FPU exception support */
106 static qemu_irq ferr_irq;
107
108 void pc_register_ferr_irq(qemu_irq irq)
109 {
110 ferr_irq = irq;
111 }
112
113 /* XXX: add IGNNE support */
114 void cpu_set_ferr(CPUX86State *s)
115 {
116 qemu_irq_raise(ferr_irq);
117 }
118
119 static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
120 {
121 qemu_irq_lower(ferr_irq);
122 }
123
124 /* TSC handling */
125 uint64_t cpu_get_tsc(CPUX86State *env)
126 {
127 return cpu_get_ticks();
128 }
129
130 /* SMM support */
131
132 static cpu_set_smm_t smm_set;
133 static void *smm_arg;
134
135 void cpu_smm_register(cpu_set_smm_t callback, void *arg)
136 {
137 assert(smm_set == NULL);
138 assert(smm_arg == NULL);
139 smm_set = callback;
140 smm_arg = arg;
141 }
142
143 void cpu_smm_update(CPUState *env)
144 {
145 if (smm_set && smm_arg && env == first_cpu)
146 smm_set(!!(env->hflags & HF_SMM_MASK), smm_arg);
147 }
148
149
150 /* IRQ handling */
151 int cpu_get_pic_interrupt(CPUState *env)
152 {
153 int intno;
154
155 intno = apic_get_interrupt(env->apic_state);
156 if (intno >= 0) {
157 /* set irq request if a PIC irq is still pending */
158 /* XXX: improve that */
159 pic_update_irq(isa_pic);
160 return intno;
161 }
162 /* read the irq from the PIC */
163 if (!apic_accept_pic_intr(env->apic_state)) {
164 return -1;
165 }
166
167 intno = pic_read_irq(isa_pic);
168 return intno;
169 }
170
171 static void pic_irq_request(void *opaque, int irq, int level)
172 {
173 CPUState *env = first_cpu;
174
175 DPRINTF("pic_irqs: %s irq %d\n", level? "raise" : "lower", irq);
176 if (env->apic_state) {
177 while (env) {
178 if (apic_accept_pic_intr(env->apic_state)) {
179 apic_deliver_pic_intr(env->apic_state, level);
180 }
181 env = env->next_cpu;
182 }
183 } else {
184 if (level)
185 cpu_interrupt(env, CPU_INTERRUPT_HARD);
186 else
187 cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
188 }
189 }
190
191 /* PC cmos mappings */
192
193 #define REG_EQUIPMENT_BYTE 0x14
194
195 static int cmos_get_fd_drive_type(FDriveType fd0)
196 {
197 int val;
198
199 switch (fd0) {
200 case FDRIVE_DRV_144:
201 /* 1.44 Mb 3"5 drive */
202 val = 4;
203 break;
204 case FDRIVE_DRV_288:
205 /* 2.88 Mb 3"5 drive */
206 val = 5;
207 break;
208 case FDRIVE_DRV_120:
209 /* 1.2 Mb 5"5 drive */
210 val = 2;
211 break;
212 case FDRIVE_DRV_NONE:
213 default:
214 val = 0;
215 break;
216 }
217 return val;
218 }
219
220 static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd,
221 ISADevice *s)
222 {
223 int cylinders, heads, sectors;
224 bdrv_get_geometry_hint(hd, &cylinders, &heads, &sectors);
225 rtc_set_memory(s, type_ofs, 47);
226 rtc_set_memory(s, info_ofs, cylinders);
227 rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
228 rtc_set_memory(s, info_ofs + 2, heads);
229 rtc_set_memory(s, info_ofs + 3, 0xff);
230 rtc_set_memory(s, info_ofs + 4, 0xff);
231 rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
232 rtc_set_memory(s, info_ofs + 6, cylinders);
233 rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
234 rtc_set_memory(s, info_ofs + 8, sectors);
235 }
236
237 /* convert boot_device letter to something recognizable by the bios */
238 static int boot_device2nibble(char boot_device)
239 {
240 switch(boot_device) {
241 case 'a':
242 case 'b':
243 return 0x01; /* floppy boot */
244 case 'c':
245 return 0x02; /* hard drive boot */
246 case 'd':
247 return 0x03; /* CD-ROM boot */
248 case 'n':
249 return 0x04; /* Network boot */
250 }
251 return 0;
252 }
253
254 static int set_boot_dev(ISADevice *s, const char *boot_device, int fd_bootchk)
255 {
256 #define PC_MAX_BOOT_DEVICES 3
257 int nbds, bds[3] = { 0, };
258 int i;
259
260 nbds = strlen(boot_device);
261 if (nbds > PC_MAX_BOOT_DEVICES) {
262 error_report("Too many boot devices for PC");
263 return(1);
264 }
265 for (i = 0; i < nbds; i++) {
266 bds[i] = boot_device2nibble(boot_device[i]);
267 if (bds[i] == 0) {
268 error_report("Invalid boot device for PC: '%c'",
269 boot_device[i]);
270 return(1);
271 }
272 }
273 rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
274 rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1));
275 return(0);
276 }
277
278 static int pc_boot_set(void *opaque, const char *boot_device)
279 {
280 return set_boot_dev(opaque, boot_device, 0);
281 }
282
283 typedef struct pc_cmos_init_late_arg {
284 ISADevice *rtc_state;
285 BusState *idebus0, *idebus1;
286 } pc_cmos_init_late_arg;
287
288 static void pc_cmos_init_late(void *opaque)
289 {
290 pc_cmos_init_late_arg *arg = opaque;
291 ISADevice *s = arg->rtc_state;
292 int val;
293 BlockDriverState *hd_table[4];
294 int i;
295
296 ide_get_bs(hd_table, arg->idebus0);
297 ide_get_bs(hd_table + 2, arg->idebus1);
298
299 rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
300 if (hd_table[0])
301 cmos_init_hd(0x19, 0x1b, hd_table[0], s);
302 if (hd_table[1])
303 cmos_init_hd(0x1a, 0x24, hd_table[1], s);
304
305 val = 0;
306 for (i = 0; i < 4; i++) {
307 if (hd_table[i]) {
308 int cylinders, heads, sectors, translation;
309 /* NOTE: bdrv_get_geometry_hint() returns the physical
310 geometry. It is always such that: 1 <= sects <= 63, 1
311 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
312 geometry can be different if a translation is done. */
313 translation = bdrv_get_translation_hint(hd_table[i]);
314 if (translation == BIOS_ATA_TRANSLATION_AUTO) {
315 bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, &sectors);
316 if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
317 /* No translation. */
318 translation = 0;
319 } else {
320 /* LBA translation. */
321 translation = 1;
322 }
323 } else {
324 translation--;
325 }
326 val |= translation << (i * 2);
327 }
328 }
329 rtc_set_memory(s, 0x39, val);
330
331 qemu_unregister_reset(pc_cmos_init_late, opaque);
332 }
333
334 void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
335 const char *boot_device,
336 BusState *idebus0, BusState *idebus1,
337 ISADevice *s)
338 {
339 int val, nb, nb_heads, max_track, last_sect, i;
340 FDriveType fd_type[2];
341 DriveInfo *fd[2];
342 static pc_cmos_init_late_arg arg;
343
344 /* various important CMOS locations needed by PC/Bochs bios */
345
346 /* memory size */
347 val = 640; /* base memory in K */
348 rtc_set_memory(s, 0x15, val);
349 rtc_set_memory(s, 0x16, val >> 8);
350
351 val = (ram_size / 1024) - 1024;
352 if (val > 65535)
353 val = 65535;
354 rtc_set_memory(s, 0x17, val);
355 rtc_set_memory(s, 0x18, val >> 8);
356 rtc_set_memory(s, 0x30, val);
357 rtc_set_memory(s, 0x31, val >> 8);
358
359 if (above_4g_mem_size) {
360 rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16);
361 rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24);
362 rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32);
363 }
364
365 if (ram_size > (16 * 1024 * 1024))
366 val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
367 else
368 val = 0;
369 if (val > 65535)
370 val = 65535;
371 rtc_set_memory(s, 0x34, val);
372 rtc_set_memory(s, 0x35, val >> 8);
373
374 /* set the number of CPU */
375 rtc_set_memory(s, 0x5f, smp_cpus - 1);
376
377 /* set boot devices, and disable floppy signature check if requested */
378 if (set_boot_dev(s, boot_device, fd_bootchk)) {
379 exit(1);
380 }
381
382 /* floppy type */
383 for (i = 0; i < 2; i++) {
384 fd[i] = drive_get(IF_FLOPPY, 0, i);
385 if (fd[i] && bdrv_is_inserted(fd[i]->bdrv)) {
386 bdrv_get_floppy_geometry_hint(fd[i]->bdrv, &nb_heads, &max_track,
387 &last_sect, FDRIVE_DRV_NONE,
388 &fd_type[i]);
389 } else {
390 fd_type[i] = FDRIVE_DRV_NONE;
391 }
392 }
393 val = (cmos_get_fd_drive_type(fd_type[0]) << 4) |
394 cmos_get_fd_drive_type(fd_type[1]);
395 rtc_set_memory(s, 0x10, val);
396
397 val = 0;
398 nb = 0;
399 if (fd_type[0] < FDRIVE_DRV_NONE) {
400 nb++;
401 }
402 if (fd_type[1] < FDRIVE_DRV_NONE) {
403 nb++;
404 }
405 switch (nb) {
406 case 0:
407 break;
408 case 1:
409 val |= 0x01; /* 1 drive, ready for boot */
410 break;
411 case 2:
412 val |= 0x41; /* 2 drives, ready for boot */
413 break;
414 }
415 val |= 0x02; /* FPU is there */
416 val |= 0x04; /* PS/2 mouse installed */
417 rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
418
419 /* hard drives */
420 arg.rtc_state = s;
421 arg.idebus0 = idebus0;
422 arg.idebus1 = idebus1;
423 qemu_register_reset(pc_cmos_init_late, &arg);
424 }
425
426 /* port 92 stuff: could be split off */
427 typedef struct Port92State {
428 ISADevice dev;
429 uint8_t outport;
430 qemu_irq *a20_out;
431 } Port92State;
432
433 static void port92_write(void *opaque, uint32_t addr, uint32_t val)
434 {
435 Port92State *s = opaque;
436
437 DPRINTF("port92: write 0x%02x\n", val);
438 s->outport = val;
439 qemu_set_irq(*s->a20_out, (val >> 1) & 1);
440 if (val & 1) {
441 qemu_system_reset_request();
442 }
443 }
444
445 static uint32_t port92_read(void *opaque, uint32_t addr)
446 {
447 Port92State *s = opaque;
448 uint32_t ret;
449
450 ret = s->outport;
451 DPRINTF("port92: read 0x%02x\n", ret);
452 return ret;
453 }
454
455 static void port92_init(ISADevice *dev, qemu_irq *a20_out)
456 {
457 Port92State *s = DO_UPCAST(Port92State, dev, dev);
458
459 s->a20_out = a20_out;
460 }
461
462 static const VMStateDescription vmstate_port92_isa = {
463 .name = "port92",
464 .version_id = 1,
465 .minimum_version_id = 1,
466 .minimum_version_id_old = 1,
467 .fields = (VMStateField []) {
468 VMSTATE_UINT8(outport, Port92State),
469 VMSTATE_END_OF_LIST()
470 }
471 };
472
473 static void port92_reset(DeviceState *d)
474 {
475 Port92State *s = container_of(d, Port92State, dev.qdev);
476
477 s->outport &= ~1;
478 }
479
480 static int port92_initfn(ISADevice *dev)
481 {
482 Port92State *s = DO_UPCAST(Port92State, dev, dev);
483
484 register_ioport_read(0x92, 1, 1, port92_read, s);
485 register_ioport_write(0x92, 1, 1, port92_write, s);
486 isa_init_ioport(dev, 0x92);
487 s->outport = 0;
488 return 0;
489 }
490
491 static ISADeviceInfo port92_info = {
492 .qdev.name = "port92",
493 .qdev.size = sizeof(Port92State),
494 .qdev.vmsd = &vmstate_port92_isa,
495 .qdev.no_user = 1,
496 .qdev.reset = port92_reset,
497 .init = port92_initfn,
498 };
499
500 static void port92_register(void)
501 {
502 isa_qdev_register(&port92_info);
503 }
504 device_init(port92_register)
505
506 static void handle_a20_line_change(void *opaque, int irq, int level)
507 {
508 CPUState *cpu = opaque;
509
510 /* XXX: send to all CPUs ? */
511 /* XXX: add logic to handle multiple A20 line sources */
512 cpu_x86_set_a20(cpu, level);
513 }
514
515 /***********************************************************/
516 /* Bochs BIOS debug ports */
517
518 static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
519 {
520 static const char shutdown_str[8] = "Shutdown";
521 static int shutdown_index = 0;
522
523 switch(addr) {
524 /* Bochs BIOS messages */
525 case 0x400:
526 case 0x401:
527 /* used to be panic, now unused */
528 break;
529 case 0x402:
530 case 0x403:
531 #ifdef DEBUG_BIOS
532 fprintf(stderr, "%c", val);
533 #endif
534 break;
535 case 0x8900:
536 /* same as Bochs power off */
537 if (val == shutdown_str[shutdown_index]) {
538 shutdown_index++;
539 if (shutdown_index == 8) {
540 shutdown_index = 0;
541 qemu_system_shutdown_request();
542 }
543 } else {
544 shutdown_index = 0;
545 }
546 break;
547
548 /* LGPL'ed VGA BIOS messages */
549 case 0x501:
550 case 0x502:
551 fprintf(stderr, "VGA BIOS panic, line %d\n", val);
552 exit(1);
553 case 0x500:
554 case 0x503:
555 #ifdef DEBUG_BIOS
556 fprintf(stderr, "%c", val);
557 #endif
558 break;
559 }
560 }
561
562 int e820_add_entry(uint64_t address, uint64_t length, uint32_t type)
563 {
564 int index = le32_to_cpu(e820_table.count);
565 struct e820_entry *entry;
566
567 if (index >= E820_NR_ENTRIES)
568 return -EBUSY;
569 entry = &e820_table.entry[index++];
570
571 entry->address = cpu_to_le64(address);
572 entry->length = cpu_to_le64(length);
573 entry->type = cpu_to_le32(type);
574
575 e820_table.count = cpu_to_le32(index);
576 return index;
577 }
578
579 static void *bochs_bios_init(void)
580 {
581 void *fw_cfg;
582 uint8_t *smbios_table;
583 size_t smbios_len;
584 uint64_t *numa_fw_cfg;
585 int i, j;
586
587 register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
588 register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
589 register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
590 register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
591 register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
592
593 register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
594 register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
595 register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
596 register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
597
598 fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0);
599
600 fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
601 fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
602 fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, (uint8_t *)acpi_tables,
603 acpi_tables_len);
604 fw_cfg_add_bytes(fw_cfg, FW_CFG_IRQ0_OVERRIDE, &irq0override, 1);
605
606 smbios_table = smbios_get_table(&smbios_len);
607 if (smbios_table)
608 fw_cfg_add_bytes(fw_cfg, FW_CFG_SMBIOS_ENTRIES,
609 smbios_table, smbios_len);
610 fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE, (uint8_t *)&e820_table,
611 sizeof(struct e820_table));
612
613 fw_cfg_add_bytes(fw_cfg, FW_CFG_HPET, (uint8_t *)&hpet_cfg,
614 sizeof(struct hpet_fw_config));
615 /* allocate memory for the NUMA channel: one (64bit) word for the number
616 * of nodes, one word for each VCPU->node and one word for each node to
617 * hold the amount of memory.
618 */
619 numa_fw_cfg = qemu_mallocz((1 + smp_cpus + nb_numa_nodes) * 8);
620 numa_fw_cfg[0] = cpu_to_le64(nb_numa_nodes);
621 for (i = 0; i < smp_cpus; i++) {
622 for (j = 0; j < nb_numa_nodes; j++) {
623 if (node_cpumask[j] & (1 << i)) {
624 numa_fw_cfg[i + 1] = cpu_to_le64(j);
625 break;
626 }
627 }
628 }
629 for (i = 0; i < nb_numa_nodes; i++) {
630 numa_fw_cfg[smp_cpus + 1 + i] = cpu_to_le64(node_mem[i]);
631 }
632 fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, (uint8_t *)numa_fw_cfg,
633 (1 + smp_cpus + nb_numa_nodes) * 8);
634
635 return fw_cfg;
636 }
637
638 static long get_file_size(FILE *f)
639 {
640 long where, size;
641
642 /* XXX: on Unix systems, using fstat() probably makes more sense */
643
644 where = ftell(f);
645 fseek(f, 0, SEEK_END);
646 size = ftell(f);
647 fseek(f, where, SEEK_SET);
648
649 return size;
650 }
651
652 static void load_linux(void *fw_cfg,
653 const char *kernel_filename,
654 const char *initrd_filename,
655 const char *kernel_cmdline,
656 target_phys_addr_t max_ram_size)
657 {
658 uint16_t protocol;
659 int setup_size, kernel_size, initrd_size = 0, cmdline_size;
660 uint32_t initrd_max;
661 uint8_t header[8192], *setup, *kernel, *initrd_data;
662 target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr = 0;
663 FILE *f;
664 char *vmode;
665
666 /* Align to 16 bytes as a paranoia measure */
667 cmdline_size = (strlen(kernel_cmdline)+16) & ~15;
668
669 /* load the kernel header */
670 f = fopen(kernel_filename, "rb");
671 if (!f || !(kernel_size = get_file_size(f)) ||
672 fread(header, 1, MIN(ARRAY_SIZE(header), kernel_size), f) !=
673 MIN(ARRAY_SIZE(header), kernel_size)) {
674 fprintf(stderr, "qemu: could not load kernel '%s': %s\n",
675 kernel_filename, strerror(errno));
676 exit(1);
677 }
678
679 /* kernel protocol version */
680 #if 0
681 fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
682 #endif
683 if (ldl_p(header+0x202) == 0x53726448)
684 protocol = lduw_p(header+0x206);
685 else {
686 /* This looks like a multiboot kernel. If it is, let's stop
687 treating it like a Linux kernel. */
688 if (load_multiboot(fw_cfg, f, kernel_filename, initrd_filename,
689 kernel_cmdline, kernel_size, header))
690 return;
691 protocol = 0;
692 }
693
694 if (protocol < 0x200 || !(header[0x211] & 0x01)) {
695 /* Low kernel */
696 real_addr = 0x90000;
697 cmdline_addr = 0x9a000 - cmdline_size;
698 prot_addr = 0x10000;
699 } else if (protocol < 0x202) {
700 /* High but ancient kernel */
701 real_addr = 0x90000;
702 cmdline_addr = 0x9a000 - cmdline_size;
703 prot_addr = 0x100000;
704 } else {
705 /* High and recent kernel */
706 real_addr = 0x10000;
707 cmdline_addr = 0x20000;
708 prot_addr = 0x100000;
709 }
710
711 #if 0
712 fprintf(stderr,
713 "qemu: real_addr = 0x" TARGET_FMT_plx "\n"
714 "qemu: cmdline_addr = 0x" TARGET_FMT_plx "\n"
715 "qemu: prot_addr = 0x" TARGET_FMT_plx "\n",
716 real_addr,
717 cmdline_addr,
718 prot_addr);
719 #endif
720
721 /* highest address for loading the initrd */
722 if (protocol >= 0x203)
723 initrd_max = ldl_p(header+0x22c);
724 else
725 initrd_max = 0x37ffffff;
726
727 if (initrd_max >= max_ram_size-ACPI_DATA_SIZE)
728 initrd_max = max_ram_size-ACPI_DATA_SIZE-1;
729
730 fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_ADDR, cmdline_addr);
731 fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(kernel_cmdline)+1);
732 fw_cfg_add_bytes(fw_cfg, FW_CFG_CMDLINE_DATA,
733 (uint8_t*)strdup(kernel_cmdline),
734 strlen(kernel_cmdline)+1);
735
736 if (protocol >= 0x202) {
737 stl_p(header+0x228, cmdline_addr);
738 } else {
739 stw_p(header+0x20, 0xA33F);
740 stw_p(header+0x22, cmdline_addr-real_addr);
741 }
742
743 /* handle vga= parameter */
744 vmode = strstr(kernel_cmdline, "vga=");
745 if (vmode) {
746 unsigned int video_mode;
747 /* skip "vga=" */
748 vmode += 4;
749 if (!strncmp(vmode, "normal", 6)) {
750 video_mode = 0xffff;
751 } else if (!strncmp(vmode, "ext", 3)) {
752 video_mode = 0xfffe;
753 } else if (!strncmp(vmode, "ask", 3)) {
754 video_mode = 0xfffd;
755 } else {
756 video_mode = strtol(vmode, NULL, 0);
757 }
758 stw_p(header+0x1fa, video_mode);
759 }
760
761 /* loader type */
762 /* High nybble = B reserved for Qemu; low nybble is revision number.
763 If this code is substantially changed, you may want to consider
764 incrementing the revision. */
765 if (protocol >= 0x200)
766 header[0x210] = 0xB0;
767
768 /* heap */
769 if (protocol >= 0x201) {
770 header[0x211] |= 0x80; /* CAN_USE_HEAP */
771 stw_p(header+0x224, cmdline_addr-real_addr-0x200);
772 }
773
774 /* load initrd */
775 if (initrd_filename) {
776 if (protocol < 0x200) {
777 fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
778 exit(1);
779 }
780
781 initrd_size = get_image_size(initrd_filename);
782 if (initrd_size < 0) {
783 fprintf(stderr, "qemu: error reading initrd %s\n",
784 initrd_filename);
785 exit(1);
786 }
787
788 initrd_addr = (initrd_max-initrd_size) & ~4095;
789
790 initrd_data = qemu_malloc(initrd_size);
791 load_image(initrd_filename, initrd_data);
792
793 fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr);
794 fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
795 fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data, initrd_size);
796
797 stl_p(header+0x218, initrd_addr);
798 stl_p(header+0x21c, initrd_size);
799 }
800
801 /* load kernel and setup */
802 setup_size = header[0x1f1];
803 if (setup_size == 0)
804 setup_size = 4;
805 setup_size = (setup_size+1)*512;
806 kernel_size -= setup_size;
807
808 setup = qemu_malloc(setup_size);
809 kernel = qemu_malloc(kernel_size);
810 fseek(f, 0, SEEK_SET);
811 if (fread(setup, 1, setup_size, f) != setup_size) {
812 fprintf(stderr, "fread() failed\n");
813 exit(1);
814 }
815 if (fread(kernel, 1, kernel_size, f) != kernel_size) {
816 fprintf(stderr, "fread() failed\n");
817 exit(1);
818 }
819 fclose(f);
820 memcpy(setup, header, MIN(sizeof(header), setup_size));
821
822 fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, prot_addr);
823 fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
824 fw_cfg_add_bytes(fw_cfg, FW_CFG_KERNEL_DATA, kernel, kernel_size);
825
826 fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_ADDR, real_addr);
827 fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_SIZE, setup_size);
828 fw_cfg_add_bytes(fw_cfg, FW_CFG_SETUP_DATA, setup, setup_size);
829
830 option_rom[nb_option_roms].name = "linuxboot.bin";
831 option_rom[nb_option_roms].bootindex = 0;
832 nb_option_roms++;
833 }
834
835 #define NE2000_NB_MAX 6
836
837 static const int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360,
838 0x280, 0x380 };
839 static const int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
840
841 static const int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
842 static const int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
843
844 void pc_init_ne2k_isa(NICInfo *nd)
845 {
846 static int nb_ne2k = 0;
847
848 if (nb_ne2k == NE2000_NB_MAX)
849 return;
850 isa_ne2000_init(ne2000_io[nb_ne2k],
851 ne2000_irq[nb_ne2k], nd);
852 nb_ne2k++;
853 }
854
855 int cpu_is_bsp(CPUState *env)
856 {
857 /* We hard-wire the BSP to the first CPU. */
858 return env->cpu_index == 0;
859 }
860
861 DeviceState *cpu_get_current_apic(void)
862 {
863 if (cpu_single_env) {
864 return cpu_single_env->apic_state;
865 } else {
866 return NULL;
867 }
868 }
869
870 static DeviceState *apic_init(void *env, uint8_t apic_id)
871 {
872 DeviceState *dev;
873 SysBusDevice *d;
874 static int apic_mapped;
875
876 dev = qdev_create(NULL, "apic");
877 qdev_prop_set_uint8(dev, "id", apic_id);
878 qdev_prop_set_ptr(dev, "cpu_env", env);
879 qdev_init_nofail(dev);
880 d = sysbus_from_qdev(dev);
881
882 /* XXX: mapping more APICs at the same memory location */
883 if (apic_mapped == 0) {
884 /* NOTE: the APIC is directly connected to the CPU - it is not
885 on the global memory bus. */
886 /* XXX: what if the base changes? */
887 sysbus_mmio_map(d, 0, MSI_ADDR_BASE);
888 apic_mapped = 1;
889 }
890
891 msix_supported = 1;
892
893 return dev;
894 }
895
896 /* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
897 BIOS will read it and start S3 resume at POST Entry */
898 void pc_cmos_set_s3_resume(void *opaque, int irq, int level)
899 {
900 ISADevice *s = opaque;
901
902 if (level) {
903 rtc_set_memory(s, 0xF, 0xFE);
904 }
905 }
906
907 void pc_acpi_smi_interrupt(void *opaque, int irq, int level)
908 {
909 CPUState *s = opaque;
910
911 if (level) {
912 cpu_interrupt(s, CPU_INTERRUPT_SMI);
913 }
914 }
915
916 static void pc_cpu_reset(void *opaque)
917 {
918 CPUState *env = opaque;
919
920 cpu_reset(env);
921 env->halted = !cpu_is_bsp(env);
922 }
923
924 static CPUState *pc_new_cpu(const char *cpu_model)
925 {
926 CPUState *env;
927
928 env = cpu_init(cpu_model);
929 if (!env) {
930 fprintf(stderr, "Unable to find x86 CPU definition\n");
931 exit(1);
932 }
933 if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) {
934 env->cpuid_apic_id = env->cpu_index;
935 env->apic_state = apic_init(env, env->cpuid_apic_id);
936 }
937 qemu_register_reset(pc_cpu_reset, env);
938 pc_cpu_reset(env);
939 return env;
940 }
941
942 void pc_cpus_init(const char *cpu_model)
943 {
944 int i;
945
946 /* init CPUs */
947 if (cpu_model == NULL) {
948 #ifdef TARGET_X86_64
949 cpu_model = "qemu64";
950 #else
951 cpu_model = "qemu32";
952 #endif
953 }
954
955 for(i = 0; i < smp_cpus; i++) {
956 pc_new_cpu(cpu_model);
957 }
958 }
959
960 void pc_memory_init(ram_addr_t ram_size,
961 const char *kernel_filename,
962 const char *kernel_cmdline,
963 const char *initrd_filename,
964 ram_addr_t *below_4g_mem_size_p,
965 ram_addr_t *above_4g_mem_size_p)
966 {
967 char *filename;
968 int ret, linux_boot, i;
969 ram_addr_t ram_addr, bios_offset, option_rom_offset;
970 ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
971 int bios_size, isa_bios_size;
972 void *fw_cfg;
973
974 if (ram_size >= 0xe0000000 ) {
975 above_4g_mem_size = ram_size - 0xe0000000;
976 below_4g_mem_size = 0xe0000000;
977 } else {
978 below_4g_mem_size = ram_size;
979 }
980 *above_4g_mem_size_p = above_4g_mem_size;
981 *below_4g_mem_size_p = below_4g_mem_size;
982
983 linux_boot = (kernel_filename != NULL);
984
985 /* allocate RAM */
986 ram_addr = qemu_ram_alloc(NULL, "pc.ram",
987 below_4g_mem_size + above_4g_mem_size);
988 cpu_register_physical_memory(0, 0xa0000, ram_addr);
989 cpu_register_physical_memory(0x100000,
990 below_4g_mem_size - 0x100000,
991 ram_addr + 0x100000);
992 if (above_4g_mem_size > 0) {
993 cpu_register_physical_memory(0x100000000ULL, above_4g_mem_size,
994 ram_addr + below_4g_mem_size);
995 }
996
997 /* BIOS load */
998 if (bios_name == NULL)
999 bios_name = BIOS_FILENAME;
1000 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
1001 if (filename) {
1002 bios_size = get_image_size(filename);
1003 } else {
1004 bios_size = -1;
1005 }
1006 if (bios_size <= 0 ||
1007 (bios_size % 65536) != 0) {
1008 goto bios_error;
1009 }
1010 bios_offset = qemu_ram_alloc(NULL, "pc.bios", bios_size);
1011 ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size), -1);
1012 if (ret != 0) {
1013 bios_error:
1014 fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", bios_name);
1015 exit(1);
1016 }
1017 if (filename) {
1018 qemu_free(filename);
1019 }
1020 /* map the last 128KB of the BIOS in ISA space */
1021 isa_bios_size = bios_size;
1022 if (isa_bios_size > (128 * 1024))
1023 isa_bios_size = 128 * 1024;
1024 cpu_register_physical_memory(0x100000 - isa_bios_size,
1025 isa_bios_size,
1026 (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
1027
1028 option_rom_offset = qemu_ram_alloc(NULL, "pc.rom", PC_ROM_SIZE);
1029 cpu_register_physical_memory(PC_ROM_MIN_VGA, PC_ROM_SIZE, option_rom_offset);
1030
1031 /* map all the bios at the top of memory */
1032 cpu_register_physical_memory((uint32_t)(-bios_size),
1033 bios_size, bios_offset | IO_MEM_ROM);
1034
1035 fw_cfg = bochs_bios_init();
1036 rom_set_fw(fw_cfg);
1037
1038 if (linux_boot) {
1039 load_linux(fw_cfg, kernel_filename, initrd_filename, kernel_cmdline, below_4g_mem_size);
1040 }
1041
1042 for (i = 0; i < nb_option_roms; i++) {
1043 rom_add_option(option_rom[i].name, option_rom[i].bootindex);
1044 }
1045 }
1046
1047 qemu_irq *pc_allocate_cpu_irq(void)
1048 {
1049 return qemu_allocate_irqs(pic_irq_request, NULL, 1);
1050 }
1051
1052 void pc_vga_init(PCIBus *pci_bus)
1053 {
1054 if (cirrus_vga_enabled) {
1055 if (pci_bus) {
1056 pci_cirrus_vga_init(pci_bus);
1057 } else {
1058 isa_cirrus_vga_init();
1059 }
1060 } else if (vmsvga_enabled) {
1061 if (pci_bus) {
1062 if (!pci_vmsvga_init(pci_bus)) {
1063 fprintf(stderr, "Warning: vmware_vga not available,"
1064 " using standard VGA instead\n");
1065 pci_vga_init(pci_bus);
1066 }
1067 } else {
1068 fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
1069 }
1070 #ifdef CONFIG_SPICE
1071 } else if (qxl_enabled) {
1072 if (pci_bus)
1073 pci_create_simple(pci_bus, -1, "qxl-vga");
1074 else
1075 fprintf(stderr, "%s: qxl: no PCI bus\n", __FUNCTION__);
1076 #endif
1077 } else if (std_vga_enabled) {
1078 if (pci_bus) {
1079 pci_vga_init(pci_bus);
1080 } else {
1081 isa_vga_init();
1082 }
1083 }
1084 }
1085
1086 static void cpu_request_exit(void *opaque, int irq, int level)
1087 {
1088 CPUState *env = cpu_single_env;
1089
1090 if (env && level) {
1091 cpu_exit(env);
1092 }
1093 }
1094
1095 void pc_basic_device_init(qemu_irq *isa_irq,
1096 ISADevice **rtc_state)
1097 {
1098 int i;
1099 DriveInfo *fd[MAX_FD];
1100 qemu_irq rtc_irq = NULL;
1101 qemu_irq *a20_line;
1102 ISADevice *i8042, *port92, *vmmouse, *pit;
1103 qemu_irq *cpu_exit_irq;
1104
1105 register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
1106
1107 register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
1108
1109 if (!no_hpet) {
1110 DeviceState *hpet = sysbus_try_create_simple("hpet", HPET_BASE, NULL);
1111
1112 if (hpet) {
1113 for (i = 0; i < 24; i++) {
1114 sysbus_connect_irq(sysbus_from_qdev(hpet), i, isa_irq[i]);
1115 }
1116 rtc_irq = qdev_get_gpio_in(hpet, 0);
1117 }
1118 }
1119 *rtc_state = rtc_init(2000, rtc_irq);
1120
1121 qemu_register_boot_set(pc_boot_set, *rtc_state);
1122
1123 pit = pit_init(0x40, 0);
1124 pcspk_init(pit);
1125
1126 for(i = 0; i < MAX_SERIAL_PORTS; i++) {
1127 if (serial_hds[i]) {
1128 serial_isa_init(i, serial_hds[i]);
1129 }
1130 }
1131
1132 for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
1133 if (parallel_hds[i]) {
1134 parallel_init(i, parallel_hds[i]);
1135 }
1136 }
1137
1138 a20_line = qemu_allocate_irqs(handle_a20_line_change, first_cpu, 2);
1139 i8042 = isa_create_simple("i8042");
1140 i8042_setup_a20_line(i8042, &a20_line[0]);
1141 vmport_init();
1142 vmmouse = isa_try_create("vmmouse");
1143 if (vmmouse) {
1144 qdev_prop_set_ptr(&vmmouse->qdev, "ps2_mouse", i8042);
1145 qdev_init_nofail(&vmmouse->qdev);
1146 }
1147 port92 = isa_create_simple("port92");
1148 port92_init(port92, &a20_line[1]);
1149
1150 cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
1151 DMA_init(0, cpu_exit_irq);
1152
1153 for(i = 0; i < MAX_FD; i++) {
1154 fd[i] = drive_get(IF_FLOPPY, 0, i);
1155 }
1156 fdctrl_init_isa(fd);
1157 }
1158
1159 void pc_pci_device_init(PCIBus *pci_bus)
1160 {
1161 int max_bus;
1162 int bus;
1163
1164 max_bus = drive_get_max_bus(IF_SCSI);
1165 for (bus = 0; bus <= max_bus; bus++) {
1166 pci_create_simple(pci_bus, -1, "lsi53c895a");
1167 }
1168 }
Qemu with PowerPC KVM improvements