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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
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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 * 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,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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 * THE SOFTWARE.
23
 */
24
#include "hw.h"
25
#include "pc.h"
26
#include "apic.h"
27
#include "fdc.h"
28
#include "pci.h"
29
#include "vmware_vga.h"
30
#include "usb-uhci.h"
31
#include "usb-ohci.h"
32
#include "prep_pci.h"
33
#include "apb_pci.h"
34
#include "block.h"
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#include "sysemu.h"
36
#include "audio/audio.h"
37
#include "net.h"
38
#include "smbus.h"
39
#include "boards.h"
40
#include "monitor.h"
41
#include "fw_cfg.h"
42
#include "hpet_emul.h"
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#include "watchdog.h"
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#include "smbios.h"
45
#include "ide.h"
46
#include "loader.h"
47
#include "elf.h"
48
#include "multiboot.h"
49

    
50
/* output Bochs bios info messages */
51
//#define DEBUG_BIOS
52

    
53
#define BIOS_FILENAME "bios.bin"
54

    
55
#define PC_MAX_BIOS_SIZE (4 * 1024 * 1024)
56

    
57
/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables.  */
58
#define ACPI_DATA_SIZE       0x10000
59
#define BIOS_CFG_IOPORT 0x510
60
#define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0)
61
#define FW_CFG_SMBIOS_ENTRIES (FW_CFG_ARCH_LOCAL + 1)
62
#define FW_CFG_IRQ0_OVERRIDE (FW_CFG_ARCH_LOCAL + 2)
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#define FW_CFG_E820_TABLE (FW_CFG_ARCH_LOCAL + 3)
64

    
65
#define MAX_IDE_BUS 2
66

    
67
static FDCtrl *floppy_controller;
68
static RTCState *rtc_state;
69
static PITState *pit;
70
static PCII440FXState *i440fx_state;
71

    
72
#define E820_NR_ENTRIES                16
73

    
74
struct e820_entry {
75
    uint64_t address;
76
    uint64_t length;
77
    uint32_t type;
78
};
79

    
80
struct e820_table {
81
    uint32_t count;
82
    struct e820_entry entry[E820_NR_ENTRIES];
83
};
84

    
85
static struct e820_table e820_table;
86

    
87
typedef struct isa_irq_state {
88
    qemu_irq *i8259;
89
    qemu_irq *ioapic;
90
} IsaIrqState;
91

    
92
static void isa_irq_handler(void *opaque, int n, int level)
93
{
94
    IsaIrqState *isa = (IsaIrqState *)opaque;
95

    
96
    if (n < 16) {
97
        qemu_set_irq(isa->i8259[n], level);
98
    }
99
    if (isa->ioapic)
100
        qemu_set_irq(isa->ioapic[n], level);
101
};
102

    
103
static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
104
{
105
}
106

    
107
/* MSDOS compatibility mode FPU exception support */
108
static qemu_irq ferr_irq;
109
/* XXX: add IGNNE support */
110
void cpu_set_ferr(CPUX86State *s)
111
{
112
    qemu_irq_raise(ferr_irq);
113
}
114

    
115
static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
116
{
117
    qemu_irq_lower(ferr_irq);
118
}
119

    
120
/* TSC handling */
121
uint64_t cpu_get_tsc(CPUX86State *env)
122
{
123
    return cpu_get_ticks();
124
}
125

    
126
/* SMM support */
127
void cpu_smm_update(CPUState *env)
128
{
129
    if (i440fx_state && env == first_cpu)
130
        i440fx_set_smm(i440fx_state, (env->hflags >> HF_SMM_SHIFT) & 1);
131
}
132

    
133

    
134
/* IRQ handling */
135
int cpu_get_pic_interrupt(CPUState *env)
136
{
137
    int intno;
138

    
139
    intno = apic_get_interrupt(env);
140
    if (intno >= 0) {
141
        /* set irq request if a PIC irq is still pending */
142
        /* XXX: improve that */
143
        pic_update_irq(isa_pic);
144
        return intno;
145
    }
146
    /* read the irq from the PIC */
147
    if (!apic_accept_pic_intr(env))
148
        return -1;
149

    
150
    intno = pic_read_irq(isa_pic);
151
    return intno;
152
}
153

    
154
static void pic_irq_request(void *opaque, int irq, int level)
155
{
156
    CPUState *env = first_cpu;
157

    
158
    if (env->apic_state) {
159
        while (env) {
160
            if (apic_accept_pic_intr(env))
161
                apic_deliver_pic_intr(env, level);
162
            env = env->next_cpu;
163
        }
164
    } else {
165
        if (level)
166
            cpu_interrupt(env, CPU_INTERRUPT_HARD);
167
        else
168
            cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
169
    }
170
}
171

    
172
/* PC cmos mappings */
173

    
174
#define REG_EQUIPMENT_BYTE          0x14
175

    
176
static int cmos_get_fd_drive_type(int fd0)
177
{
178
    int val;
179

    
180
    switch (fd0) {
181
    case 0:
182
        /* 1.44 Mb 3"5 drive */
183
        val = 4;
184
        break;
185
    case 1:
186
        /* 2.88 Mb 3"5 drive */
187
        val = 5;
188
        break;
189
    case 2:
190
        /* 1.2 Mb 5"5 drive */
191
        val = 2;
192
        break;
193
    default:
194
        val = 0;
195
        break;
196
    }
197
    return val;
198
}
199

    
200
static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd)
201
{
202
    RTCState *s = rtc_state;
203
    int cylinders, heads, sectors;
204
    bdrv_get_geometry_hint(hd, &cylinders, &heads, &sectors);
205
    rtc_set_memory(s, type_ofs, 47);
206
    rtc_set_memory(s, info_ofs, cylinders);
207
    rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
208
    rtc_set_memory(s, info_ofs + 2, heads);
209
    rtc_set_memory(s, info_ofs + 3, 0xff);
210
    rtc_set_memory(s, info_ofs + 4, 0xff);
211
    rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
212
    rtc_set_memory(s, info_ofs + 6, cylinders);
213
    rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
214
    rtc_set_memory(s, info_ofs + 8, sectors);
215
}
216

    
217
/* convert boot_device letter to something recognizable by the bios */
218
static int boot_device2nibble(char boot_device)
219
{
220
    switch(boot_device) {
221
    case 'a':
222
    case 'b':
223
        return 0x01; /* floppy boot */
224
    case 'c':
225
        return 0x02; /* hard drive boot */
226
    case 'd':
227
        return 0x03; /* CD-ROM boot */
228
    case 'n':
229
        return 0x04; /* Network boot */
230
    }
231
    return 0;
232
}
233

    
234
static int set_boot_dev(RTCState *s, const char *boot_device, int fd_bootchk)
235
{
236
#define PC_MAX_BOOT_DEVICES 3
237
    int nbds, bds[3] = { 0, };
238
    int i;
239

    
240
    nbds = strlen(boot_device);
241
    if (nbds > PC_MAX_BOOT_DEVICES) {
242
        error_report("Too many boot devices for PC");
243
        return(1);
244
    }
245
    for (i = 0; i < nbds; i++) {
246
        bds[i] = boot_device2nibble(boot_device[i]);
247
        if (bds[i] == 0) {
248
            error_report("Invalid boot device for PC: '%c'",
249
                         boot_device[i]);
250
            return(1);
251
        }
252
    }
253
    rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
254
    rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1));
255
    return(0);
256
}
257

    
258
static int pc_boot_set(void *opaque, const char *boot_device)
259
{
260
    return set_boot_dev(opaque, boot_device, 0);
261
}
262

    
263
/* hd_table must contain 4 block drivers */
264
static void cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
265
                      const char *boot_device, DriveInfo **hd_table)
266
{
267
    RTCState *s = rtc_state;
268
    int val;
269
    int fd0, fd1, nb;
270
    int i;
271

    
272
    /* various important CMOS locations needed by PC/Bochs bios */
273

    
274
    /* memory size */
275
    val = 640; /* base memory in K */
276
    rtc_set_memory(s, 0x15, val);
277
    rtc_set_memory(s, 0x16, val >> 8);
278

    
279
    val = (ram_size / 1024) - 1024;
280
    if (val > 65535)
281
        val = 65535;
282
    rtc_set_memory(s, 0x17, val);
283
    rtc_set_memory(s, 0x18, val >> 8);
284
    rtc_set_memory(s, 0x30, val);
285
    rtc_set_memory(s, 0x31, val >> 8);
286

    
287
    if (above_4g_mem_size) {
288
        rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16);
289
        rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24);
290
        rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32);
291
    }
292

    
293
    if (ram_size > (16 * 1024 * 1024))
294
        val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
295
    else
296
        val = 0;
297
    if (val > 65535)
298
        val = 65535;
299
    rtc_set_memory(s, 0x34, val);
300
    rtc_set_memory(s, 0x35, val >> 8);
301

    
302
    /* set the number of CPU */
303
    rtc_set_memory(s, 0x5f, smp_cpus - 1);
304

    
305
    /* set boot devices, and disable floppy signature check if requested */
306
    if (set_boot_dev(s, boot_device, fd_bootchk)) {
307
        exit(1);
308
    }
309

    
310
    /* floppy type */
311

    
312
    fd0 = fdctrl_get_drive_type(floppy_controller, 0);
313
    fd1 = fdctrl_get_drive_type(floppy_controller, 1);
314

    
315
    val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
316
    rtc_set_memory(s, 0x10, val);
317

    
318
    val = 0;
319
    nb = 0;
320
    if (fd0 < 3)
321
        nb++;
322
    if (fd1 < 3)
323
        nb++;
324
    switch (nb) {
325
    case 0:
326
        break;
327
    case 1:
328
        val |= 0x01; /* 1 drive, ready for boot */
329
        break;
330
    case 2:
331
        val |= 0x41; /* 2 drives, ready for boot */
332
        break;
333
    }
334
    val |= 0x02; /* FPU is there */
335
    val |= 0x04; /* PS/2 mouse installed */
336
    rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
337

    
338
    /* hard drives */
339

    
340
    rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
341
    if (hd_table[0])
342
        cmos_init_hd(0x19, 0x1b, hd_table[0]->bdrv);
343
    if (hd_table[1])
344
        cmos_init_hd(0x1a, 0x24, hd_table[1]->bdrv);
345

    
346
    val = 0;
347
    for (i = 0; i < 4; i++) {
348
        if (hd_table[i]) {
349
            int cylinders, heads, sectors, translation;
350
            /* NOTE: bdrv_get_geometry_hint() returns the physical
351
                geometry.  It is always such that: 1 <= sects <= 63, 1
352
                <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
353
                geometry can be different if a translation is done. */
354
            translation = bdrv_get_translation_hint(hd_table[i]->bdrv);
355
            if (translation == BIOS_ATA_TRANSLATION_AUTO) {
356
                bdrv_get_geometry_hint(hd_table[i]->bdrv, &cylinders, &heads, &sectors);
357
                if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
358
                    /* No translation. */
359
                    translation = 0;
360
                } else {
361
                    /* LBA translation. */
362
                    translation = 1;
363
                }
364
            } else {
365
                translation--;
366
            }
367
            val |= translation << (i * 2);
368
        }
369
    }
370
    rtc_set_memory(s, 0x39, val);
371
}
372

    
373
void ioport_set_a20(int enable)
374
{
375
    /* XXX: send to all CPUs ? */
376
    cpu_x86_set_a20(first_cpu, enable);
377
}
378

    
379
int ioport_get_a20(void)
380
{
381
    return ((first_cpu->a20_mask >> 20) & 1);
382
}
383

    
384
static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
385
{
386
    ioport_set_a20((val >> 1) & 1);
387
    /* XXX: bit 0 is fast reset */
388
}
389

    
390
static uint32_t ioport92_read(void *opaque, uint32_t addr)
391
{
392
    return ioport_get_a20() << 1;
393
}
394

    
395
/***********************************************************/
396
/* Bochs BIOS debug ports */
397

    
398
static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
399
{
400
    static const char shutdown_str[8] = "Shutdown";
401
    static int shutdown_index = 0;
402

    
403
    switch(addr) {
404
        /* Bochs BIOS messages */
405
    case 0x400:
406
    case 0x401:
407
        fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
408
        exit(1);
409
    case 0x402:
410
    case 0x403:
411
#ifdef DEBUG_BIOS
412
        fprintf(stderr, "%c", val);
413
#endif
414
        break;
415
    case 0x8900:
416
        /* same as Bochs power off */
417
        if (val == shutdown_str[shutdown_index]) {
418
            shutdown_index++;
419
            if (shutdown_index == 8) {
420
                shutdown_index = 0;
421
                qemu_system_shutdown_request();
422
            }
423
        } else {
424
            shutdown_index = 0;
425
        }
426
        break;
427

    
428
        /* LGPL'ed VGA BIOS messages */
429
    case 0x501:
430
    case 0x502:
431
        fprintf(stderr, "VGA BIOS panic, line %d\n", val);
432
        exit(1);
433
    case 0x500:
434
    case 0x503:
435
#ifdef DEBUG_BIOS
436
        fprintf(stderr, "%c", val);
437
#endif
438
        break;
439
    }
440
}
441

    
442
int e820_add_entry(uint64_t address, uint64_t length, uint32_t type)
443
{
444
    int index = e820_table.count;
445
    struct e820_entry *entry;
446

    
447
    if (index >= E820_NR_ENTRIES)
448
        return -EBUSY;
449
    entry = &e820_table.entry[index];
450

    
451
    entry->address = address;
452
    entry->length = length;
453
    entry->type = type;
454

    
455
    e820_table.count++;
456
    return e820_table.count;
457
}
458

    
459
static void *bochs_bios_init(void)
460
{
461
    void *fw_cfg;
462
    uint8_t *smbios_table;
463
    size_t smbios_len;
464
    uint64_t *numa_fw_cfg;
465
    int i, j;
466

    
467
    register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
468
    register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
469
    register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
470
    register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
471
    register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
472

    
473
    register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
474
    register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
475
    register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
476
    register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
477

    
478
    fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0);
479

    
480
    fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
481
    fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
482
    fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, (uint8_t *)acpi_tables,
483
                     acpi_tables_len);
484
    fw_cfg_add_bytes(fw_cfg, FW_CFG_IRQ0_OVERRIDE, &irq0override, 1);
485

    
486
    smbios_table = smbios_get_table(&smbios_len);
487
    if (smbios_table)
488
        fw_cfg_add_bytes(fw_cfg, FW_CFG_SMBIOS_ENTRIES,
489
                         smbios_table, smbios_len);
490
    fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE, (uint8_t *)&e820_table,
491
                     sizeof(struct e820_table));
492

    
493
    /* allocate memory for the NUMA channel: one (64bit) word for the number
494
     * of nodes, one word for each VCPU->node and one word for each node to
495
     * hold the amount of memory.
496
     */
497
    numa_fw_cfg = qemu_mallocz((1 + smp_cpus + nb_numa_nodes) * 8);
498
    numa_fw_cfg[0] = cpu_to_le64(nb_numa_nodes);
499
    for (i = 0; i < smp_cpus; i++) {
500
        for (j = 0; j < nb_numa_nodes; j++) {
501
            if (node_cpumask[j] & (1 << i)) {
502
                numa_fw_cfg[i + 1] = cpu_to_le64(j);
503
                break;
504
            }
505
        }
506
    }
507
    for (i = 0; i < nb_numa_nodes; i++) {
508
        numa_fw_cfg[smp_cpus + 1 + i] = cpu_to_le64(node_mem[i]);
509
    }
510
    fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, (uint8_t *)numa_fw_cfg,
511
                     (1 + smp_cpus + nb_numa_nodes) * 8);
512

    
513
    return fw_cfg;
514
}
515

    
516
static long get_file_size(FILE *f)
517
{
518
    long where, size;
519

    
520
    /* XXX: on Unix systems, using fstat() probably makes more sense */
521

    
522
    where = ftell(f);
523
    fseek(f, 0, SEEK_END);
524
    size = ftell(f);
525
    fseek(f, where, SEEK_SET);
526

    
527
    return size;
528
}
529

    
530
static void load_linux(void *fw_cfg,
531
                       const char *kernel_filename,
532
                       const char *initrd_filename,
533
                       const char *kernel_cmdline,
534
                       target_phys_addr_t max_ram_size)
535
{
536
    uint16_t protocol;
537
    int setup_size, kernel_size, initrd_size = 0, cmdline_size;
538
    uint32_t initrd_max;
539
    uint8_t header[8192], *setup, *kernel, *initrd_data;
540
    target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr = 0;
541
    FILE *f;
542
    char *vmode;
543

    
544
    /* Align to 16 bytes as a paranoia measure */
545
    cmdline_size = (strlen(kernel_cmdline)+16) & ~15;
546

    
547
    /* load the kernel header */
548
    f = fopen(kernel_filename, "rb");
549
    if (!f || !(kernel_size = get_file_size(f)) ||
550
        fread(header, 1, MIN(ARRAY_SIZE(header), kernel_size), f) !=
551
        MIN(ARRAY_SIZE(header), kernel_size)) {
552
        fprintf(stderr, "qemu: could not load kernel '%s': %s\n",
553
                kernel_filename, strerror(errno));
554
        exit(1);
555
    }
556

    
557
    /* kernel protocol version */
558
#if 0
559
    fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
560
#endif
561
    if (ldl_p(header+0x202) == 0x53726448)
562
        protocol = lduw_p(header+0x206);
563
    else {
564
        /* This looks like a multiboot kernel. If it is, let's stop
565
           treating it like a Linux kernel. */
566
        if (load_multiboot(fw_cfg, f, kernel_filename, initrd_filename,
567
                           kernel_cmdline, kernel_size, header))
568
            return;
569
        protocol = 0;
570
    }
571

    
572
    if (protocol < 0x200 || !(header[0x211] & 0x01)) {
573
        /* Low kernel */
574
        real_addr    = 0x90000;
575
        cmdline_addr = 0x9a000 - cmdline_size;
576
        prot_addr    = 0x10000;
577
    } else if (protocol < 0x202) {
578
        /* High but ancient kernel */
579
        real_addr    = 0x90000;
580
        cmdline_addr = 0x9a000 - cmdline_size;
581
        prot_addr    = 0x100000;
582
    } else {
583
        /* High and recent kernel */
584
        real_addr    = 0x10000;
585
        cmdline_addr = 0x20000;
586
        prot_addr    = 0x100000;
587
    }
588

    
589
#if 0
590
    fprintf(stderr,
591
            "qemu: real_addr     = 0x" TARGET_FMT_plx "\n"
592
            "qemu: cmdline_addr  = 0x" TARGET_FMT_plx "\n"
593
            "qemu: prot_addr     = 0x" TARGET_FMT_plx "\n",
594
            real_addr,
595
            cmdline_addr,
596
            prot_addr);
597
#endif
598

    
599
    /* highest address for loading the initrd */
600
    if (protocol >= 0x203)
601
        initrd_max = ldl_p(header+0x22c);
602
    else
603
        initrd_max = 0x37ffffff;
604

    
605
    if (initrd_max >= max_ram_size-ACPI_DATA_SIZE)
606
            initrd_max = max_ram_size-ACPI_DATA_SIZE-1;
607

    
608
    fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_ADDR, cmdline_addr);
609
    fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(kernel_cmdline)+1);
610
    fw_cfg_add_bytes(fw_cfg, FW_CFG_CMDLINE_DATA,
611
                     (uint8_t*)strdup(kernel_cmdline),
612
                     strlen(kernel_cmdline)+1);
613

    
614
    if (protocol >= 0x202) {
615
        stl_p(header+0x228, cmdline_addr);
616
    } else {
617
        stw_p(header+0x20, 0xA33F);
618
        stw_p(header+0x22, cmdline_addr-real_addr);
619
    }
620

    
621
    /* handle vga= parameter */
622
    vmode = strstr(kernel_cmdline, "vga=");
623
    if (vmode) {
624
        unsigned int video_mode;
625
        /* skip "vga=" */
626
        vmode += 4;
627
        if (!strncmp(vmode, "normal", 6)) {
628
            video_mode = 0xffff;
629
        } else if (!strncmp(vmode, "ext", 3)) {
630
            video_mode = 0xfffe;
631
        } else if (!strncmp(vmode, "ask", 3)) {
632
            video_mode = 0xfffd;
633
        } else {
634
            video_mode = strtol(vmode, NULL, 0);
635
        }
636
        stw_p(header+0x1fa, video_mode);
637
    }
638

    
639
    /* loader type */
640
    /* High nybble = B reserved for Qemu; low nybble is revision number.
641
       If this code is substantially changed, you may want to consider
642
       incrementing the revision. */
643
    if (protocol >= 0x200)
644
        header[0x210] = 0xB0;
645

    
646
    /* heap */
647
    if (protocol >= 0x201) {
648
        header[0x211] |= 0x80;        /* CAN_USE_HEAP */
649
        stw_p(header+0x224, cmdline_addr-real_addr-0x200);
650
    }
651

    
652
    /* load initrd */
653
    if (initrd_filename) {
654
        if (protocol < 0x200) {
655
            fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
656
            exit(1);
657
        }
658

    
659
        initrd_size = get_image_size(initrd_filename);
660
        initrd_addr = (initrd_max-initrd_size) & ~4095;
661

    
662
        initrd_data = qemu_malloc(initrd_size);
663
        load_image(initrd_filename, initrd_data);
664

    
665
        fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr);
666
        fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
667
        fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data, initrd_size);
668

    
669
        stl_p(header+0x218, initrd_addr);
670
        stl_p(header+0x21c, initrd_size);
671
    }
672

    
673
    /* load kernel and setup */
674
    setup_size = header[0x1f1];
675
    if (setup_size == 0)
676
        setup_size = 4;
677
    setup_size = (setup_size+1)*512;
678
    kernel_size -= setup_size;
679

    
680
    setup  = qemu_malloc(setup_size);
681
    kernel = qemu_malloc(kernel_size);
682
    fseek(f, 0, SEEK_SET);
683
    if (fread(setup, 1, setup_size, f) != setup_size) {
684
        fprintf(stderr, "fread() failed\n");
685
        exit(1);
686
    }
687
    if (fread(kernel, 1, kernel_size, f) != kernel_size) {
688
        fprintf(stderr, "fread() failed\n");
689
        exit(1);
690
    }
691
    fclose(f);
692
    memcpy(setup, header, MIN(sizeof(header), setup_size));
693

    
694
    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, prot_addr);
695
    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
696
    fw_cfg_add_bytes(fw_cfg, FW_CFG_KERNEL_DATA, kernel, kernel_size);
697

    
698
    fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_ADDR, real_addr);
699
    fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_SIZE, setup_size);
700
    fw_cfg_add_bytes(fw_cfg, FW_CFG_SETUP_DATA, setup, setup_size);
701

    
702
    option_rom[nb_option_roms] = "linuxboot.bin";
703
    nb_option_roms++;
704
}
705

    
706
static const int ide_iobase[2] = { 0x1f0, 0x170 };
707
static const int ide_iobase2[2] = { 0x3f6, 0x376 };
708
static const int ide_irq[2] = { 14, 15 };
709

    
710
#define NE2000_NB_MAX 6
711

    
712
static const int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360,
713
                                              0x280, 0x380 };
714
static const int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
715

    
716
static const int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
717
static const int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
718

    
719
#ifdef HAS_AUDIO
720
static void audio_init (PCIBus *pci_bus, qemu_irq *pic)
721
{
722
    struct soundhw *c;
723

    
724
    for (c = soundhw; c->name; ++c) {
725
        if (c->enabled) {
726
            if (c->isa) {
727
                c->init.init_isa(pic);
728
            } else {
729
                if (pci_bus) {
730
                    c->init.init_pci(pci_bus);
731
                }
732
            }
733
        }
734
    }
735
}
736
#endif
737

    
738
static void pc_init_ne2k_isa(NICInfo *nd)
739
{
740
    static int nb_ne2k = 0;
741

    
742
    if (nb_ne2k == NE2000_NB_MAX)
743
        return;
744
    isa_ne2000_init(ne2000_io[nb_ne2k],
745
                    ne2000_irq[nb_ne2k], nd);
746
    nb_ne2k++;
747
}
748

    
749
int cpu_is_bsp(CPUState *env)
750
{
751
    /* We hard-wire the BSP to the first CPU. */
752
    return env->cpu_index == 0;
753
}
754

    
755
static CPUState *pc_new_cpu(const char *cpu_model)
756
{
757
    CPUState *env;
758

    
759
    env = cpu_init(cpu_model);
760
    if (!env) {
761
        fprintf(stderr, "Unable to find x86 CPU definition\n");
762
        exit(1);
763
    }
764
    if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) {
765
        env->cpuid_apic_id = env->cpu_index;
766
        /* APIC reset callback resets cpu */
767
        apic_init(env);
768
    } else {
769
        qemu_register_reset((QEMUResetHandler*)cpu_reset, env);
770
    }
771
    return env;
772
}
773

    
774
/* PC hardware initialisation */
775
static void pc_init1(ram_addr_t ram_size,
776
                     const char *boot_device,
777
                     const char *kernel_filename,
778
                     const char *kernel_cmdline,
779
                     const char *initrd_filename,
780
                     const char *cpu_model,
781
                     int pci_enabled)
782
{
783
    char *filename;
784
    int ret, linux_boot, i;
785
    ram_addr_t ram_addr, bios_offset, option_rom_offset;
786
    ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
787
    int bios_size, isa_bios_size;
788
    PCIBus *pci_bus;
789
    ISADevice *isa_dev;
790
    int piix3_devfn = -1;
791
    CPUState *env;
792
    qemu_irq *cpu_irq;
793
    qemu_irq *isa_irq;
794
    qemu_irq *i8259;
795
    IsaIrqState *isa_irq_state;
796
    DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
797
    DriveInfo *fd[MAX_FD];
798
    void *fw_cfg;
799

    
800
    if (ram_size >= 0xe0000000 ) {
801
        above_4g_mem_size = ram_size - 0xe0000000;
802
        below_4g_mem_size = 0xe0000000;
803
    } else {
804
        below_4g_mem_size = ram_size;
805
    }
806

    
807
    linux_boot = (kernel_filename != NULL);
808

    
809
    /* init CPUs */
810
    if (cpu_model == NULL) {
811
#ifdef TARGET_X86_64
812
        cpu_model = "qemu64";
813
#else
814
        cpu_model = "qemu32";
815
#endif
816
    }
817

    
818
    for (i = 0; i < smp_cpus; i++) {
819
        env = pc_new_cpu(cpu_model);
820
    }
821

    
822
    vmport_init();
823

    
824
    /* allocate RAM */
825
    ram_addr = qemu_ram_alloc(below_4g_mem_size);
826
    cpu_register_physical_memory(0, 0xa0000, ram_addr);
827
    cpu_register_physical_memory(0x100000,
828
                 below_4g_mem_size - 0x100000,
829
                 ram_addr + 0x100000);
830

    
831
    /* above 4giga memory allocation */
832
    if (above_4g_mem_size > 0) {
833
#if TARGET_PHYS_ADDR_BITS == 32
834
        hw_error("To much RAM for 32-bit physical address");
835
#else
836
        ram_addr = qemu_ram_alloc(above_4g_mem_size);
837
        cpu_register_physical_memory(0x100000000ULL,
838
                                     above_4g_mem_size,
839
                                     ram_addr);
840
#endif
841
    }
842

    
843

    
844
    /* BIOS load */
845
    if (bios_name == NULL)
846
        bios_name = BIOS_FILENAME;
847
    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
848
    if (filename) {
849
        bios_size = get_image_size(filename);
850
    } else {
851
        bios_size = -1;
852
    }
853
    if (bios_size <= 0 ||
854
        (bios_size % 65536) != 0) {
855
        goto bios_error;
856
    }
857
    bios_offset = qemu_ram_alloc(bios_size);
858
    ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size));
859
    if (ret != 0) {
860
    bios_error:
861
        fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", bios_name);
862
        exit(1);
863
    }
864
    if (filename) {
865
        qemu_free(filename);
866
    }
867
    /* map the last 128KB of the BIOS in ISA space */
868
    isa_bios_size = bios_size;
869
    if (isa_bios_size > (128 * 1024))
870
        isa_bios_size = 128 * 1024;
871
    cpu_register_physical_memory(0x100000 - isa_bios_size,
872
                                 isa_bios_size,
873
                                 (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
874

    
875
    option_rom_offset = qemu_ram_alloc(PC_ROM_SIZE);
876
    cpu_register_physical_memory(PC_ROM_MIN_VGA, PC_ROM_SIZE, option_rom_offset);
877

    
878
    /* map all the bios at the top of memory */
879
    cpu_register_physical_memory((uint32_t)(-bios_size),
880
                                 bios_size, bios_offset | IO_MEM_ROM);
881

    
882
    fw_cfg = bochs_bios_init();
883
    rom_set_fw(fw_cfg);
884

    
885
    if (linux_boot) {
886
        load_linux(fw_cfg, kernel_filename, initrd_filename, kernel_cmdline, below_4g_mem_size);
887
    }
888

    
889
    for (i = 0; i < nb_option_roms; i++) {
890
        rom_add_option(option_rom[i]);
891
    }
892

    
893
    cpu_irq = qemu_allocate_irqs(pic_irq_request, NULL, 1);
894
    i8259 = i8259_init(cpu_irq[0]);
895
    isa_irq_state = qemu_mallocz(sizeof(*isa_irq_state));
896
    isa_irq_state->i8259 = i8259;
897
    isa_irq = qemu_allocate_irqs(isa_irq_handler, isa_irq_state, 24);
898

    
899
    if (pci_enabled) {
900
        pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, isa_irq);
901
    } else {
902
        pci_bus = NULL;
903
        isa_bus_new(NULL);
904
    }
905
    isa_bus_irqs(isa_irq);
906

    
907
    ferr_irq = isa_reserve_irq(13);
908

    
909
    /* init basic PC hardware */
910
    register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
911

    
912
    register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
913

    
914
    if (cirrus_vga_enabled) {
915
        if (pci_enabled) {
916
            pci_cirrus_vga_init(pci_bus);
917
        } else {
918
            isa_cirrus_vga_init();
919
        }
920
    } else if (vmsvga_enabled) {
921
        if (pci_enabled)
922
            pci_vmsvga_init(pci_bus);
923
        else
924
            fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
925
    } else if (std_vga_enabled) {
926
        if (pci_enabled) {
927
            pci_vga_init(pci_bus, 0, 0);
928
        } else {
929
            isa_vga_init();
930
        }
931
    }
932

    
933
    rtc_state = rtc_init(2000);
934

    
935
    qemu_register_boot_set(pc_boot_set, rtc_state);
936

    
937
    register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
938
    register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
939

    
940
    if (pci_enabled) {
941
        isa_irq_state->ioapic = ioapic_init();
942
    }
943
    pit = pit_init(0x40, isa_reserve_irq(0));
944
    pcspk_init(pit);
945
    if (!no_hpet) {
946
        hpet_init(isa_irq);
947
    }
948

    
949
    for(i = 0; i < MAX_SERIAL_PORTS; i++) {
950
        if (serial_hds[i]) {
951
            serial_isa_init(i, serial_hds[i]);
952
        }
953
    }
954

    
955
    for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
956
        if (parallel_hds[i]) {
957
            parallel_init(i, parallel_hds[i]);
958
        }
959
    }
960

    
961
    for(i = 0; i < nb_nics; i++) {
962
        NICInfo *nd = &nd_table[i];
963

    
964
        if (!pci_enabled || (nd->model && strcmp(nd->model, "ne2k_isa") == 0))
965
            pc_init_ne2k_isa(nd);
966
        else
967
            pci_nic_init_nofail(nd, "e1000", NULL);
968
    }
969

    
970
    if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
971
        fprintf(stderr, "qemu: too many IDE bus\n");
972
        exit(1);
973
    }
974

    
975
    for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
976
        hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
977
    }
978

    
979
    if (pci_enabled) {
980
        pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
981
    } else {
982
        for(i = 0; i < MAX_IDE_BUS; i++) {
983
            isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
984
                         hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
985
        }
986
    }
987

    
988
    isa_dev = isa_create_simple("i8042");
989
    DMA_init(0);
990
#ifdef HAS_AUDIO
991
    audio_init(pci_enabled ? pci_bus : NULL, isa_irq);
992
#endif
993

    
994
    for(i = 0; i < MAX_FD; i++) {
995
        fd[i] = drive_get(IF_FLOPPY, 0, i);
996
    }
997
    floppy_controller = fdctrl_init_isa(fd);
998

    
999
    cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, hd);
1000

    
1001
    if (pci_enabled && usb_enabled) {
1002
        usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
1003
    }
1004

    
1005
    if (pci_enabled && acpi_enabled) {
1006
        uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
1007
        i2c_bus *smbus;
1008

    
1009
        /* TODO: Populate SPD eeprom data.  */
1010
        smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
1011
                              isa_reserve_irq(9));
1012
        for (i = 0; i < 8; i++) {
1013
            DeviceState *eeprom;
1014
            eeprom = qdev_create((BusState *)smbus, "smbus-eeprom");
1015
            qdev_prop_set_uint8(eeprom, "address", 0x50 + i);
1016
            qdev_prop_set_ptr(eeprom, "data", eeprom_buf + (i * 256));
1017
            qdev_init_nofail(eeprom);
1018
        }
1019
        piix4_acpi_system_hot_add_init(pci_bus);
1020
    }
1021

    
1022
    if (i440fx_state) {
1023
        i440fx_init_memory_mappings(i440fx_state);
1024
    }
1025

    
1026
    if (pci_enabled) {
1027
        int max_bus;
1028
        int bus;
1029

    
1030
        max_bus = drive_get_max_bus(IF_SCSI);
1031
        for (bus = 0; bus <= max_bus; bus++) {
1032
            pci_create_simple(pci_bus, -1, "lsi53c895a");
1033
        }
1034
    }
1035
}
1036

    
1037
static void pc_init_pci(ram_addr_t ram_size,
1038
                        const char *boot_device,
1039
                        const char *kernel_filename,
1040
                        const char *kernel_cmdline,
1041
                        const char *initrd_filename,
1042
                        const char *cpu_model)
1043
{
1044
    pc_init1(ram_size, boot_device,
1045
             kernel_filename, kernel_cmdline,
1046
             initrd_filename, cpu_model, 1);
1047
}
1048

    
1049
static void pc_init_isa(ram_addr_t ram_size,
1050
                        const char *boot_device,
1051
                        const char *kernel_filename,
1052
                        const char *kernel_cmdline,
1053
                        const char *initrd_filename,
1054
                        const char *cpu_model)
1055
{
1056
    if (cpu_model == NULL)
1057
        cpu_model = "486";
1058
    pc_init1(ram_size, boot_device,
1059
             kernel_filename, kernel_cmdline,
1060
             initrd_filename, cpu_model, 0);
1061
}
1062

    
1063
/* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
1064
   BIOS will read it and start S3 resume at POST Entry */
1065
void cmos_set_s3_resume(void)
1066
{
1067
    if (rtc_state)
1068
        rtc_set_memory(rtc_state, 0xF, 0xFE);
1069
}
1070

    
1071
static QEMUMachine pc_machine = {
1072
    .name = "pc-0.13",
1073
    .alias = "pc",
1074
    .desc = "Standard PC",
1075
    .init = pc_init_pci,
1076
    .max_cpus = 255,
1077
    .is_default = 1,
1078
};
1079

    
1080
static QEMUMachine pc_machine_v0_12 = {
1081
    .name = "pc-0.12",
1082
    .desc = "Standard PC",
1083
    .init = pc_init_pci,
1084
    .max_cpus = 255,
1085
    .compat_props = (GlobalProperty[]) {
1086
        {
1087
            .driver   = "virtio-serial-pci",
1088
            .property = "max_nr_ports",
1089
            .value    = stringify(1),
1090
        },{
1091
            .driver   = "virtio-serial-pci",
1092
            .property = "vectors",
1093
            .value    = stringify(0),
1094
        },
1095
        { /* end of list */ }
1096
    }
1097
};
1098

    
1099
static QEMUMachine pc_machine_v0_11 = {
1100
    .name = "pc-0.11",
1101
    .desc = "Standard PC, qemu 0.11",
1102
    .init = pc_init_pci,
1103
    .max_cpus = 255,
1104
    .compat_props = (GlobalProperty[]) {
1105
        {
1106
            .driver   = "virtio-blk-pci",
1107
            .property = "vectors",
1108
            .value    = stringify(0),
1109
        },{
1110
            .driver   = "virtio-serial-pci",
1111
            .property = "max_nr_ports",
1112
            .value    = stringify(1),
1113
        },{
1114
            .driver   = "virtio-serial-pci",
1115
            .property = "vectors",
1116
            .value    = stringify(0),
1117
        },{
1118
            .driver   = "ide-drive",
1119
            .property = "ver",
1120
            .value    = "0.11",
1121
        },{
1122
            .driver   = "scsi-disk",
1123
            .property = "ver",
1124
            .value    = "0.11",
1125
        },{
1126
            .driver   = "PCI",
1127
            .property = "rombar",
1128
            .value    = stringify(0),
1129
        },
1130
        { /* end of list */ }
1131
    }
1132
};
1133

    
1134
static QEMUMachine pc_machine_v0_10 = {
1135
    .name = "pc-0.10",
1136
    .desc = "Standard PC, qemu 0.10",
1137
    .init = pc_init_pci,
1138
    .max_cpus = 255,
1139
    .compat_props = (GlobalProperty[]) {
1140
        {
1141
            .driver   = "virtio-blk-pci",
1142
            .property = "class",
1143
            .value    = stringify(PCI_CLASS_STORAGE_OTHER),
1144
        },{
1145
            .driver   = "virtio-serial-pci",
1146
            .property = "class",
1147
            .value    = stringify(PCI_CLASS_DISPLAY_OTHER),
1148
        },{
1149
            .driver   = "virtio-serial-pci",
1150
            .property = "max_nr_ports",
1151
            .value    = stringify(1),
1152
        },{
1153
            .driver   = "virtio-serial-pci",
1154
            .property = "vectors",
1155
            .value    = stringify(0),
1156
        },{
1157
            .driver   = "virtio-net-pci",
1158
            .property = "vectors",
1159
            .value    = stringify(0),
1160
        },{
1161
            .driver   = "virtio-blk-pci",
1162
            .property = "vectors",
1163
            .value    = stringify(0),
1164
        },{
1165
            .driver   = "ide-drive",
1166
            .property = "ver",
1167
            .value    = "0.10",
1168
        },{
1169
            .driver   = "scsi-disk",
1170
            .property = "ver",
1171
            .value    = "0.10",
1172
        },{
1173
            .driver   = "PCI",
1174
            .property = "rombar",
1175
            .value    = stringify(0),
1176
        },
1177
        { /* end of list */ }
1178
    },
1179
};
1180

    
1181
static QEMUMachine isapc_machine = {
1182
    .name = "isapc",
1183
    .desc = "ISA-only PC",
1184
    .init = pc_init_isa,
1185
    .max_cpus = 1,
1186
};
1187

    
1188
static void pc_machine_init(void)
1189
{
1190
    qemu_register_machine(&pc_machine);
1191
    qemu_register_machine(&pc_machine_v0_12);
1192
    qemu_register_machine(&pc_machine_v0_11);
1193
    qemu_register_machine(&pc_machine_v0_10);
1194
    qemu_register_machine(&isapc_machine);
1195
}
1196

    
1197
machine_init(pc_machine_init);