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1
/*
2
 * QEMU PC System Emulator
3
 *
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 * 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 "fdc.h"
27
#include "pci.h"
28
#include "vmware_vga.h"
29
#include "usb-uhci.h"
30
#include "usb-ohci.h"
31
#include "prep_pci.h"
32
#include "apb_pci.h"
33
#include "block.h"
34
#include "sysemu.h"
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#include "audio/audio.h"
36
#include "net.h"
37
#include "smbus.h"
38
#include "boards.h"
39
#include "monitor.h"
40
#include "fw_cfg.h"
41
#include "hpet_emul.h"
42
#include "watchdog.h"
43
#include "smbios.h"
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#include "ide.h"
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#include "loader.h"
46
#include "elf.h"
47
#include "multiboot.h"
48

    
49
/* output Bochs bios info messages */
50
//#define DEBUG_BIOS
51

    
52
#define BIOS_FILENAME "bios.bin"
53

    
54
#define PC_MAX_BIOS_SIZE (4 * 1024 * 1024)
55

    
56
/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables.  */
57
#define ACPI_DATA_SIZE       0x10000
58
#define BIOS_CFG_IOPORT 0x510
59
#define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0)
60
#define FW_CFG_SMBIOS_ENTRIES (FW_CFG_ARCH_LOCAL + 1)
61
#define FW_CFG_IRQ0_OVERRIDE (FW_CFG_ARCH_LOCAL + 2)
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#define FW_CFG_E820_TABLE (FW_CFG_ARCH_LOCAL + 3)
63

    
64
#define MAX_IDE_BUS 2
65

    
66
static FDCtrl *floppy_controller;
67
static RTCState *rtc_state;
68
static PITState *pit;
69
static PCII440FXState *i440fx_state;
70

    
71
#define E820_NR_ENTRIES                16
72

    
73
struct e820_entry {
74
    uint64_t address;
75
    uint64_t length;
76
    uint32_t type;
77
};
78

    
79
struct e820_table {
80
    uint32_t count;
81
    struct e820_entry entry[E820_NR_ENTRIES];
82
};
83

    
84
static struct e820_table e820_table;
85

    
86
typedef struct isa_irq_state {
87
    qemu_irq *i8259;
88
    qemu_irq *ioapic;
89
} IsaIrqState;
90

    
91
static void isa_irq_handler(void *opaque, int n, int level)
92
{
93
    IsaIrqState *isa = (IsaIrqState *)opaque;
94

    
95
    if (n < 16) {
96
        qemu_set_irq(isa->i8259[n], level);
97
    }
98
    if (isa->ioapic)
99
        qemu_set_irq(isa->ioapic[n], level);
100
};
101

    
102
static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
103
{
104
}
105

    
106
/* MSDOS compatibility mode FPU exception support */
107
static qemu_irq ferr_irq;
108
/* XXX: add IGNNE support */
109
void cpu_set_ferr(CPUX86State *s)
110
{
111
    qemu_irq_raise(ferr_irq);
112
}
113

    
114
static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
115
{
116
    qemu_irq_lower(ferr_irq);
117
}
118

    
119
/* TSC handling */
120
uint64_t cpu_get_tsc(CPUX86State *env)
121
{
122
    return cpu_get_ticks();
123
}
124

    
125
/* SMM support */
126
void cpu_smm_update(CPUState *env)
127
{
128
    if (i440fx_state && env == first_cpu)
129
        i440fx_set_smm(i440fx_state, (env->hflags >> HF_SMM_SHIFT) & 1);
130
}
131

    
132

    
133
/* IRQ handling */
134
int cpu_get_pic_interrupt(CPUState *env)
135
{
136
    int intno;
137

    
138
    intno = apic_get_interrupt(env);
139
    if (intno >= 0) {
140
        /* set irq request if a PIC irq is still pending */
141
        /* XXX: improve that */
142
        pic_update_irq(isa_pic);
143
        return intno;
144
    }
145
    /* read the irq from the PIC */
146
    if (!apic_accept_pic_intr(env))
147
        return -1;
148

    
149
    intno = pic_read_irq(isa_pic);
150
    return intno;
151
}
152

    
153
static void pic_irq_request(void *opaque, int irq, int level)
154
{
155
    CPUState *env = first_cpu;
156

    
157
    if (env->apic_state) {
158
        while (env) {
159
            if (apic_accept_pic_intr(env))
160
                apic_deliver_pic_intr(env, level);
161
            env = env->next_cpu;
162
        }
163
    } else {
164
        if (level)
165
            cpu_interrupt(env, CPU_INTERRUPT_HARD);
166
        else
167
            cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
168
    }
169
}
170

    
171
/* PC cmos mappings */
172

    
173
#define REG_EQUIPMENT_BYTE          0x14
174

    
175
static int cmos_get_fd_drive_type(int fd0)
176
{
177
    int val;
178

    
179
    switch (fd0) {
180
    case 0:
181
        /* 1.44 Mb 3"5 drive */
182
        val = 4;
183
        break;
184
    case 1:
185
        /* 2.88 Mb 3"5 drive */
186
        val = 5;
187
        break;
188
    case 2:
189
        /* 1.2 Mb 5"5 drive */
190
        val = 2;
191
        break;
192
    default:
193
        val = 0;
194
        break;
195
    }
196
    return val;
197
}
198

    
199
static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd)
200
{
201
    RTCState *s = rtc_state;
202
    int cylinders, heads, sectors;
203
    bdrv_get_geometry_hint(hd, &cylinders, &heads, &sectors);
204
    rtc_set_memory(s, type_ofs, 47);
205
    rtc_set_memory(s, info_ofs, cylinders);
206
    rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
207
    rtc_set_memory(s, info_ofs + 2, heads);
208
    rtc_set_memory(s, info_ofs + 3, 0xff);
209
    rtc_set_memory(s, info_ofs + 4, 0xff);
210
    rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
211
    rtc_set_memory(s, info_ofs + 6, cylinders);
212
    rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
213
    rtc_set_memory(s, info_ofs + 8, sectors);
214
}
215

    
216
/* convert boot_device letter to something recognizable by the bios */
217
static int boot_device2nibble(char boot_device)
218
{
219
    switch(boot_device) {
220
    case 'a':
221
    case 'b':
222
        return 0x01; /* floppy boot */
223
    case 'c':
224
        return 0x02; /* hard drive boot */
225
    case 'd':
226
        return 0x03; /* CD-ROM boot */
227
    case 'n':
228
        return 0x04; /* Network boot */
229
    }
230
    return 0;
231
}
232

    
233
static int set_boot_dev(RTCState *s, const char *boot_device, int fd_bootchk)
234
{
235
#define PC_MAX_BOOT_DEVICES 3
236
    int nbds, bds[3] = { 0, };
237
    int i;
238

    
239
    nbds = strlen(boot_device);
240
    if (nbds > PC_MAX_BOOT_DEVICES) {
241
        qemu_error("Too many boot devices for PC\n");
242
        return(1);
243
    }
244
    for (i = 0; i < nbds; i++) {
245
        bds[i] = boot_device2nibble(boot_device[i]);
246
        if (bds[i] == 0) {
247
            qemu_error("Invalid boot device for PC: '%c'\n",
248
                       boot_device[i]);
249
            return(1);
250
        }
251
    }
252
    rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
253
    rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1));
254
    return(0);
255
}
256

    
257
static int pc_boot_set(void *opaque, const char *boot_device)
258
{
259
    return set_boot_dev(opaque, boot_device, 0);
260
}
261

    
262
/* hd_table must contain 4 block drivers */
263
static void cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
264
                      const char *boot_device, DriveInfo **hd_table)
265
{
266
    RTCState *s = rtc_state;
267
    int val;
268
    int fd0, fd1, nb;
269
    int i;
270

    
271
    /* various important CMOS locations needed by PC/Bochs bios */
272

    
273
    /* memory size */
274
    val = 640; /* base memory in K */
275
    rtc_set_memory(s, 0x15, val);
276
    rtc_set_memory(s, 0x16, val >> 8);
277

    
278
    val = (ram_size / 1024) - 1024;
279
    if (val > 65535)
280
        val = 65535;
281
    rtc_set_memory(s, 0x17, val);
282
    rtc_set_memory(s, 0x18, val >> 8);
283
    rtc_set_memory(s, 0x30, val);
284
    rtc_set_memory(s, 0x31, val >> 8);
285

    
286
    if (above_4g_mem_size) {
287
        rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16);
288
        rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24);
289
        rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32);
290
    }
291

    
292
    if (ram_size > (16 * 1024 * 1024))
293
        val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
294
    else
295
        val = 0;
296
    if (val > 65535)
297
        val = 65535;
298
    rtc_set_memory(s, 0x34, val);
299
    rtc_set_memory(s, 0x35, val >> 8);
300

    
301
    /* set the number of CPU */
302
    rtc_set_memory(s, 0x5f, smp_cpus - 1);
303

    
304
    /* set boot devices, and disable floppy signature check if requested */
305
    if (set_boot_dev(s, boot_device, fd_bootchk)) {
306
        exit(1);
307
    }
308

    
309
    /* floppy type */
310

    
311
    fd0 = fdctrl_get_drive_type(floppy_controller, 0);
312
    fd1 = fdctrl_get_drive_type(floppy_controller, 1);
313

    
314
    val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
315
    rtc_set_memory(s, 0x10, val);
316

    
317
    val = 0;
318
    nb = 0;
319
    if (fd0 < 3)
320
        nb++;
321
    if (fd1 < 3)
322
        nb++;
323
    switch (nb) {
324
    case 0:
325
        break;
326
    case 1:
327
        val |= 0x01; /* 1 drive, ready for boot */
328
        break;
329
    case 2:
330
        val |= 0x41; /* 2 drives, ready for boot */
331
        break;
332
    }
333
    val |= 0x02; /* FPU is there */
334
    val |= 0x04; /* PS/2 mouse installed */
335
    rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
336

    
337
    /* hard drives */
338

    
339
    rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
340
    if (hd_table[0])
341
        cmos_init_hd(0x19, 0x1b, hd_table[0]->bdrv);
342
    if (hd_table[1])
343
        cmos_init_hd(0x1a, 0x24, hd_table[1]->bdrv);
344

    
345
    val = 0;
346
    for (i = 0; i < 4; i++) {
347
        if (hd_table[i]) {
348
            int cylinders, heads, sectors, translation;
349
            /* NOTE: bdrv_get_geometry_hint() returns the physical
350
                geometry.  It is always such that: 1 <= sects <= 63, 1
351
                <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
352
                geometry can be different if a translation is done. */
353
            translation = bdrv_get_translation_hint(hd_table[i]->bdrv);
354
            if (translation == BIOS_ATA_TRANSLATION_AUTO) {
355
                bdrv_get_geometry_hint(hd_table[i]->bdrv, &cylinders, &heads, &sectors);
356
                if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
357
                    /* No translation. */
358
                    translation = 0;
359
                } else {
360
                    /* LBA translation. */
361
                    translation = 1;
362
                }
363
            } else {
364
                translation--;
365
            }
366
            val |= translation << (i * 2);
367
        }
368
    }
369
    rtc_set_memory(s, 0x39, val);
370
}
371

    
372
void ioport_set_a20(int enable)
373
{
374
    /* XXX: send to all CPUs ? */
375
    cpu_x86_set_a20(first_cpu, enable);
376
}
377

    
378
int ioport_get_a20(void)
379
{
380
    return ((first_cpu->a20_mask >> 20) & 1);
381
}
382

    
383
static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
384
{
385
    ioport_set_a20((val >> 1) & 1);
386
    /* XXX: bit 0 is fast reset */
387
}
388

    
389
static uint32_t ioport92_read(void *opaque, uint32_t addr)
390
{
391
    return ioport_get_a20() << 1;
392
}
393

    
394
/***********************************************************/
395
/* Bochs BIOS debug ports */
396

    
397
static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
398
{
399
    static const char shutdown_str[8] = "Shutdown";
400
    static int shutdown_index = 0;
401

    
402
    switch(addr) {
403
        /* Bochs BIOS messages */
404
    case 0x400:
405
    case 0x401:
406
        fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
407
        exit(1);
408
    case 0x402:
409
    case 0x403:
410
#ifdef DEBUG_BIOS
411
        fprintf(stderr, "%c", val);
412
#endif
413
        break;
414
    case 0x8900:
415
        /* same as Bochs power off */
416
        if (val == shutdown_str[shutdown_index]) {
417
            shutdown_index++;
418
            if (shutdown_index == 8) {
419
                shutdown_index = 0;
420
                qemu_system_shutdown_request();
421
            }
422
        } else {
423
            shutdown_index = 0;
424
        }
425
        break;
426

    
427
        /* LGPL'ed VGA BIOS messages */
428
    case 0x501:
429
    case 0x502:
430
        fprintf(stderr, "VGA BIOS panic, line %d\n", val);
431
        exit(1);
432
    case 0x500:
433
    case 0x503:
434
#ifdef DEBUG_BIOS
435
        fprintf(stderr, "%c", val);
436
#endif
437
        break;
438
    }
439
}
440

    
441
int e820_add_entry(uint64_t address, uint64_t length, uint32_t type)
442
{
443
    int index = e820_table.count;
444
    struct e820_entry *entry;
445

    
446
    if (index >= E820_NR_ENTRIES)
447
        return -EBUSY;
448
    entry = &e820_table.entry[index];
449

    
450
    entry->address = address;
451
    entry->length = length;
452
    entry->type = type;
453

    
454
    e820_table.count++;
455
    return e820_table.count;
456
}
457

    
458
static void *bochs_bios_init(void)
459
{
460
    void *fw_cfg;
461
    uint8_t *smbios_table;
462
    size_t smbios_len;
463
    uint64_t *numa_fw_cfg;
464
    int i, j;
465

    
466
    register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
467
    register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
468
    register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
469
    register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
470
    register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
471

    
472
    register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
473
    register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
474
    register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
475
    register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
476

    
477
    fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0);
478

    
479
    fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
480
    fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
481
    fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, (uint8_t *)acpi_tables,
482
                     acpi_tables_len);
483
    fw_cfg_add_bytes(fw_cfg, FW_CFG_IRQ0_OVERRIDE, &irq0override, 1);
484

    
485
    smbios_table = smbios_get_table(&smbios_len);
486
    if (smbios_table)
487
        fw_cfg_add_bytes(fw_cfg, FW_CFG_SMBIOS_ENTRIES,
488
                         smbios_table, smbios_len);
489
    fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE, (uint8_t *)&e820_table,
490
                     sizeof(struct e820_table));
491

    
492
    /* allocate memory for the NUMA channel: one (64bit) word for the number
493
     * of nodes, one word for each VCPU->node and one word for each node to
494
     * hold the amount of memory.
495
     */
496
    numa_fw_cfg = qemu_mallocz((1 + smp_cpus + nb_numa_nodes) * 8);
497
    numa_fw_cfg[0] = cpu_to_le64(nb_numa_nodes);
498
    for (i = 0; i < smp_cpus; i++) {
499
        for (j = 0; j < nb_numa_nodes; j++) {
500
            if (node_cpumask[j] & (1 << i)) {
501
                numa_fw_cfg[i + 1] = cpu_to_le64(j);
502
                break;
503
            }
504
        }
505
    }
506
    for (i = 0; i < nb_numa_nodes; i++) {
507
        numa_fw_cfg[smp_cpus + 1 + i] = cpu_to_le64(node_mem[i]);
508
    }
509
    fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, (uint8_t *)numa_fw_cfg,
510
                     (1 + smp_cpus + nb_numa_nodes) * 8);
511

    
512
    return fw_cfg;
513
}
514

    
515
static long get_file_size(FILE *f)
516
{
517
    long where, size;
518

    
519
    /* XXX: on Unix systems, using fstat() probably makes more sense */
520

    
521
    where = ftell(f);
522
    fseek(f, 0, SEEK_END);
523
    size = ftell(f);
524
    fseek(f, where, SEEK_SET);
525

    
526
    return size;
527
}
528

    
529
static void load_linux(void *fw_cfg,
530
                       const char *kernel_filename,
531
                       const char *initrd_filename,
532
                       const char *kernel_cmdline,
533
                       target_phys_addr_t max_ram_size)
534
{
535
    uint16_t protocol;
536
    int setup_size, kernel_size, initrd_size = 0, cmdline_size;
537
    uint32_t initrd_max;
538
    uint8_t header[8192], *setup, *kernel, *initrd_data;
539
    target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr = 0;
540
    FILE *f;
541
    char *vmode;
542

    
543
    /* Align to 16 bytes as a paranoia measure */
544
    cmdline_size = (strlen(kernel_cmdline)+16) & ~15;
545

    
546
    /* load the kernel header */
547
    f = fopen(kernel_filename, "rb");
548
    if (!f || !(kernel_size = get_file_size(f)) ||
549
        fread(header, 1, MIN(ARRAY_SIZE(header), kernel_size), f) !=
550
        MIN(ARRAY_SIZE(header), kernel_size)) {
551
        fprintf(stderr, "qemu: could not load kernel '%s': %s\n",
552
                kernel_filename, strerror(errno));
553
        exit(1);
554
    }
555

    
556
    /* kernel protocol version */
557
#if 0
558
    fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
559
#endif
560
    if (ldl_p(header+0x202) == 0x53726448)
561
        protocol = lduw_p(header+0x206);
562
    else {
563
        /* This looks like a multiboot kernel. If it is, let's stop
564
           treating it like a Linux kernel. */
565
        if (load_multiboot(fw_cfg, f, kernel_filename, initrd_filename,
566
                           kernel_cmdline, kernel_size, header))
567
            return;
568
        protocol = 0;
569
    }
570

    
571
    if (protocol < 0x200 || !(header[0x211] & 0x01)) {
572
        /* Low kernel */
573
        real_addr    = 0x90000;
574
        cmdline_addr = 0x9a000 - cmdline_size;
575
        prot_addr    = 0x10000;
576
    } else if (protocol < 0x202) {
577
        /* High but ancient kernel */
578
        real_addr    = 0x90000;
579
        cmdline_addr = 0x9a000 - cmdline_size;
580
        prot_addr    = 0x100000;
581
    } else {
582
        /* High and recent kernel */
583
        real_addr    = 0x10000;
584
        cmdline_addr = 0x20000;
585
        prot_addr    = 0x100000;
586
    }
587

    
588
#if 0
589
    fprintf(stderr,
590
            "qemu: real_addr     = 0x" TARGET_FMT_plx "\n"
591
            "qemu: cmdline_addr  = 0x" TARGET_FMT_plx "\n"
592
            "qemu: prot_addr     = 0x" TARGET_FMT_plx "\n",
593
            real_addr,
594
            cmdline_addr,
595
            prot_addr);
596
#endif
597

    
598
    /* highest address for loading the initrd */
599
    if (protocol >= 0x203)
600
        initrd_max = ldl_p(header+0x22c);
601
    else
602
        initrd_max = 0x37ffffff;
603

    
604
    if (initrd_max >= max_ram_size-ACPI_DATA_SIZE)
605
            initrd_max = max_ram_size-ACPI_DATA_SIZE-1;
606

    
607
    fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_ADDR, cmdline_addr);
608
    fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(kernel_cmdline)+1);
609
    fw_cfg_add_bytes(fw_cfg, FW_CFG_CMDLINE_DATA,
610
                     (uint8_t*)strdup(kernel_cmdline),
611
                     strlen(kernel_cmdline)+1);
612

    
613
    if (protocol >= 0x202) {
614
        stl_p(header+0x228, cmdline_addr);
615
    } else {
616
        stw_p(header+0x20, 0xA33F);
617
        stw_p(header+0x22, cmdline_addr-real_addr);
618
    }
619

    
620
    /* handle vga= parameter */
621
    vmode = strstr(kernel_cmdline, "vga=");
622
    if (vmode) {
623
        unsigned int video_mode;
624
        /* skip "vga=" */
625
        vmode += 4;
626
        if (!strncmp(vmode, "normal", 6)) {
627
            video_mode = 0xffff;
628
        } else if (!strncmp(vmode, "ext", 3)) {
629
            video_mode = 0xfffe;
630
        } else if (!strncmp(vmode, "ask", 3)) {
631
            video_mode = 0xfffd;
632
        } else {
633
            video_mode = strtol(vmode, NULL, 0);
634
        }
635
        stw_p(header+0x1fa, video_mode);
636
    }
637

    
638
    /* loader type */
639
    /* High nybble = B reserved for Qemu; low nybble is revision number.
640
       If this code is substantially changed, you may want to consider
641
       incrementing the revision. */
642
    if (protocol >= 0x200)
643
        header[0x210] = 0xB0;
644

    
645
    /* heap */
646
    if (protocol >= 0x201) {
647
        header[0x211] |= 0x80;        /* CAN_USE_HEAP */
648
        stw_p(header+0x224, cmdline_addr-real_addr-0x200);
649
    }
650

    
651
    /* load initrd */
652
    if (initrd_filename) {
653
        if (protocol < 0x200) {
654
            fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
655
            exit(1);
656
        }
657

    
658
        initrd_size = get_image_size(initrd_filename);
659
        initrd_addr = (initrd_max-initrd_size) & ~4095;
660

    
661
        initrd_data = qemu_malloc(initrd_size);
662
        load_image(initrd_filename, initrd_data);
663

    
664
        fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr);
665
        fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
666
        fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data, initrd_size);
667

    
668
        stl_p(header+0x218, initrd_addr);
669
        stl_p(header+0x21c, initrd_size);
670
    }
671

    
672
    /* load kernel and setup */
673
    setup_size = header[0x1f1];
674
    if (setup_size == 0)
675
        setup_size = 4;
676
    setup_size = (setup_size+1)*512;
677
    kernel_size -= setup_size;
678

    
679
    setup  = qemu_malloc(setup_size);
680
    kernel = qemu_malloc(kernel_size);
681
    fseek(f, 0, SEEK_SET);
682
    if (fread(setup, 1, setup_size, f) != setup_size) {
683
        fprintf(stderr, "fread() failed\n");
684
        exit(1);
685
    }
686
    if (fread(kernel, 1, kernel_size, f) != kernel_size) {
687
        fprintf(stderr, "fread() failed\n");
688
        exit(1);
689
    }
690
    fclose(f);
691
    memcpy(setup, header, MIN(sizeof(header), setup_size));
692

    
693
    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, prot_addr);
694
    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
695
    fw_cfg_add_bytes(fw_cfg, FW_CFG_KERNEL_DATA, kernel, kernel_size);
696

    
697
    fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_ADDR, real_addr);
698
    fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_SIZE, setup_size);
699
    fw_cfg_add_bytes(fw_cfg, FW_CFG_SETUP_DATA, setup, setup_size);
700

    
701
    option_rom[nb_option_roms] = "linuxboot.bin";
702
    nb_option_roms++;
703
}
704

    
705
static const int ide_iobase[2] = { 0x1f0, 0x170 };
706
static const int ide_iobase2[2] = { 0x3f6, 0x376 };
707
static const int ide_irq[2] = { 14, 15 };
708

    
709
#define NE2000_NB_MAX 6
710

    
711
static const int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360,
712
                                              0x280, 0x380 };
713
static const int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
714

    
715
static const int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
716
static const int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
717

    
718
#ifdef HAS_AUDIO
719
static void audio_init (PCIBus *pci_bus, qemu_irq *pic)
720
{
721
    struct soundhw *c;
722

    
723
    for (c = soundhw; c->name; ++c) {
724
        if (c->enabled) {
725
            if (c->isa) {
726
                c->init.init_isa(pic);
727
            } else {
728
                if (pci_bus) {
729
                    c->init.init_pci(pci_bus);
730
                }
731
            }
732
        }
733
    }
734
}
735
#endif
736

    
737
static void pc_init_ne2k_isa(NICInfo *nd)
738
{
739
    static int nb_ne2k = 0;
740

    
741
    if (nb_ne2k == NE2000_NB_MAX)
742
        return;
743
    isa_ne2000_init(ne2000_io[nb_ne2k],
744
                    ne2000_irq[nb_ne2k], nd);
745
    nb_ne2k++;
746
}
747

    
748
int cpu_is_bsp(CPUState *env)
749
{
750
    /* We hard-wire the BSP to the first CPU. */
751
    return env->cpu_index == 0;
752
}
753

    
754
static CPUState *pc_new_cpu(const char *cpu_model)
755
{
756
    CPUState *env;
757

    
758
    env = cpu_init(cpu_model);
759
    if (!env) {
760
        fprintf(stderr, "Unable to find x86 CPU definition\n");
761
        exit(1);
762
    }
763
    if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) {
764
        env->cpuid_apic_id = env->cpu_index;
765
        /* APIC reset callback resets cpu */
766
        apic_init(env);
767
    } else {
768
        qemu_register_reset((QEMUResetHandler*)cpu_reset, env);
769
    }
770
    return env;
771
}
772

    
773
/* PC hardware initialisation */
774
static void pc_init1(ram_addr_t ram_size,
775
                     const char *boot_device,
776
                     const char *kernel_filename,
777
                     const char *kernel_cmdline,
778
                     const char *initrd_filename,
779
                     const char *cpu_model,
780
                     int pci_enabled)
781
{
782
    char *filename;
783
    int ret, linux_boot, i;
784
    ram_addr_t ram_addr, bios_offset, option_rom_offset;
785
    ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
786
    int bios_size, isa_bios_size;
787
    PCIBus *pci_bus;
788
    ISADevice *isa_dev;
789
    int piix3_devfn = -1;
790
    CPUState *env;
791
    qemu_irq *cpu_irq;
792
    qemu_irq *isa_irq;
793
    qemu_irq *i8259;
794
    IsaIrqState *isa_irq_state;
795
    DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
796
    DriveInfo *fd[MAX_FD];
797
    void *fw_cfg;
798

    
799
    if (ram_size >= 0xe0000000 ) {
800
        above_4g_mem_size = ram_size - 0xe0000000;
801
        below_4g_mem_size = 0xe0000000;
802
    } else {
803
        below_4g_mem_size = ram_size;
804
    }
805

    
806
    linux_boot = (kernel_filename != NULL);
807

    
808
    /* init CPUs */
809
    if (cpu_model == NULL) {
810
#ifdef TARGET_X86_64
811
        cpu_model = "qemu64";
812
#else
813
        cpu_model = "qemu32";
814
#endif
815
    }
816

    
817
    for (i = 0; i < smp_cpus; i++) {
818
        env = pc_new_cpu(cpu_model);
819
    }
820

    
821
    vmport_init();
822

    
823
    /* allocate RAM */
824
    ram_addr = qemu_ram_alloc(below_4g_mem_size);
825
    cpu_register_physical_memory(0, 0xa0000, ram_addr);
826
    cpu_register_physical_memory(0x100000,
827
                 below_4g_mem_size - 0x100000,
828
                 ram_addr + 0x100000);
829

    
830
    /* above 4giga memory allocation */
831
    if (above_4g_mem_size > 0) {
832
#if TARGET_PHYS_ADDR_BITS == 32
833
        hw_error("To much RAM for 32-bit physical address");
834
#else
835
        ram_addr = qemu_ram_alloc(above_4g_mem_size);
836
        cpu_register_physical_memory(0x100000000ULL,
837
                                     above_4g_mem_size,
838
                                     ram_addr);
839
#endif
840
    }
841

    
842

    
843
    /* BIOS load */
844
    if (bios_name == NULL)
845
        bios_name = BIOS_FILENAME;
846
    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
847
    if (filename) {
848
        bios_size = get_image_size(filename);
849
    } else {
850
        bios_size = -1;
851
    }
852
    if (bios_size <= 0 ||
853
        (bios_size % 65536) != 0) {
854
        goto bios_error;
855
    }
856
    bios_offset = qemu_ram_alloc(bios_size);
857
    ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size));
858
    if (ret != 0) {
859
    bios_error:
860
        fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", bios_name);
861
        exit(1);
862
    }
863
    if (filename) {
864
        qemu_free(filename);
865
    }
866
    /* map the last 128KB of the BIOS in ISA space */
867
    isa_bios_size = bios_size;
868
    if (isa_bios_size > (128 * 1024))
869
        isa_bios_size = 128 * 1024;
870
    cpu_register_physical_memory(0x100000 - isa_bios_size,
871
                                 isa_bios_size,
872
                                 (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
873

    
874
    option_rom_offset = qemu_ram_alloc(PC_ROM_SIZE);
875
    cpu_register_physical_memory(PC_ROM_MIN_VGA, PC_ROM_SIZE, option_rom_offset);
876

    
877
    /* map all the bios at the top of memory */
878
    cpu_register_physical_memory((uint32_t)(-bios_size),
879
                                 bios_size, bios_offset | IO_MEM_ROM);
880

    
881
    fw_cfg = bochs_bios_init();
882
    rom_set_fw(fw_cfg);
883

    
884
    if (linux_boot) {
885
        load_linux(fw_cfg, kernel_filename, initrd_filename, kernel_cmdline, below_4g_mem_size);
886
    }
887

    
888
    for (i = 0; i < nb_option_roms; i++) {
889
        rom_add_option(option_rom[i]);
890
    }
891

    
892
    cpu_irq = qemu_allocate_irqs(pic_irq_request, NULL, 1);
893
    i8259 = i8259_init(cpu_irq[0]);
894
    isa_irq_state = qemu_mallocz(sizeof(*isa_irq_state));
895
    isa_irq_state->i8259 = i8259;
896
    isa_irq = qemu_allocate_irqs(isa_irq_handler, isa_irq_state, 24);
897

    
898
    if (pci_enabled) {
899
        pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, isa_irq);
900
    } else {
901
        pci_bus = NULL;
902
        isa_bus_new(NULL);
903
    }
904
    isa_bus_irqs(isa_irq);
905

    
906
    ferr_irq = isa_reserve_irq(13);
907

    
908
    /* init basic PC hardware */
909
    register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
910

    
911
    register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
912

    
913
    if (cirrus_vga_enabled) {
914
        if (pci_enabled) {
915
            pci_cirrus_vga_init(pci_bus);
916
        } else {
917
            isa_cirrus_vga_init();
918
        }
919
    } else if (vmsvga_enabled) {
920
        if (pci_enabled)
921
            pci_vmsvga_init(pci_bus);
922
        else
923
            fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
924
    } else if (std_vga_enabled) {
925
        if (pci_enabled) {
926
            pci_vga_init(pci_bus, 0, 0);
927
        } else {
928
            isa_vga_init();
929
        }
930
    }
931

    
932
    rtc_state = rtc_init(2000);
933

    
934
    qemu_register_boot_set(pc_boot_set, rtc_state);
935

    
936
    register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
937
    register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
938

    
939
    if (pci_enabled) {
940
        isa_irq_state->ioapic = ioapic_init();
941
    }
942
    pit = pit_init(0x40, isa_reserve_irq(0));
943
    pcspk_init(pit);
944
    if (!no_hpet) {
945
        hpet_init(isa_irq);
946
    }
947

    
948
    for(i = 0; i < MAX_SERIAL_PORTS; i++) {
949
        if (serial_hds[i]) {
950
            serial_isa_init(i, serial_hds[i]);
951
        }
952
    }
953

    
954
    for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
955
        if (parallel_hds[i]) {
956
            parallel_init(i, parallel_hds[i]);
957
        }
958
    }
959

    
960
    for(i = 0; i < nb_nics; i++) {
961
        NICInfo *nd = &nd_table[i];
962

    
963
        if (!pci_enabled || (nd->model && strcmp(nd->model, "ne2k_isa") == 0))
964
            pc_init_ne2k_isa(nd);
965
        else
966
            pci_nic_init_nofail(nd, "e1000", NULL);
967
    }
968

    
969
    if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
970
        fprintf(stderr, "qemu: too many IDE bus\n");
971
        exit(1);
972
    }
973

    
974
    for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
975
        hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
976
    }
977

    
978
    if (pci_enabled) {
979
        pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
980
    } else {
981
        for(i = 0; i < MAX_IDE_BUS; i++) {
982
            isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
983
                         hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
984
        }
985
    }
986

    
987
    isa_dev = isa_create_simple("i8042");
988
    DMA_init(0);
989
#ifdef HAS_AUDIO
990
    audio_init(pci_enabled ? pci_bus : NULL, isa_irq);
991
#endif
992

    
993
    for(i = 0; i < MAX_FD; i++) {
994
        fd[i] = drive_get(IF_FLOPPY, 0, i);
995
    }
996
    floppy_controller = fdctrl_init_isa(fd);
997

    
998
    cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, hd);
999

    
1000
    if (pci_enabled && usb_enabled) {
1001
        usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
1002
    }
1003

    
1004
    if (pci_enabled && acpi_enabled) {
1005
        uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
1006
        i2c_bus *smbus;
1007

    
1008
        /* TODO: Populate SPD eeprom data.  */
1009
        smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
1010
                              isa_reserve_irq(9));
1011
        for (i = 0; i < 8; i++) {
1012
            DeviceState *eeprom;
1013
            eeprom = qdev_create((BusState *)smbus, "smbus-eeprom");
1014
            qdev_prop_set_uint8(eeprom, "address", 0x50 + i);
1015
            qdev_prop_set_ptr(eeprom, "data", eeprom_buf + (i * 256));
1016
            qdev_init_nofail(eeprom);
1017
        }
1018
        piix4_acpi_system_hot_add_init(pci_bus);
1019
    }
1020

    
1021
    if (i440fx_state) {
1022
        i440fx_init_memory_mappings(i440fx_state);
1023
    }
1024

    
1025
    if (pci_enabled) {
1026
        int max_bus;
1027
        int bus;
1028

    
1029
        max_bus = drive_get_max_bus(IF_SCSI);
1030
        for (bus = 0; bus <= max_bus; bus++) {
1031
            pci_create_simple(pci_bus, -1, "lsi53c895a");
1032
        }
1033
    }
1034
}
1035

    
1036
static void pc_init_pci(ram_addr_t ram_size,
1037
                        const char *boot_device,
1038
                        const char *kernel_filename,
1039
                        const char *kernel_cmdline,
1040
                        const char *initrd_filename,
1041
                        const char *cpu_model)
1042
{
1043
    pc_init1(ram_size, boot_device,
1044
             kernel_filename, kernel_cmdline,
1045
             initrd_filename, cpu_model, 1);
1046
}
1047

    
1048
static void pc_init_isa(ram_addr_t ram_size,
1049
                        const char *boot_device,
1050
                        const char *kernel_filename,
1051
                        const char *kernel_cmdline,
1052
                        const char *initrd_filename,
1053
                        const char *cpu_model)
1054
{
1055
    if (cpu_model == NULL)
1056
        cpu_model = "486";
1057
    pc_init1(ram_size, boot_device,
1058
             kernel_filename, kernel_cmdline,
1059
             initrd_filename, cpu_model, 0);
1060
}
1061

    
1062
/* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
1063
   BIOS will read it and start S3 resume at POST Entry */
1064
void cmos_set_s3_resume(void)
1065
{
1066
    if (rtc_state)
1067
        rtc_set_memory(rtc_state, 0xF, 0xFE);
1068
}
1069

    
1070
static QEMUMachine pc_machine = {
1071
    .name = "pc-0.13",
1072
    .alias = "pc",
1073
    .desc = "Standard PC",
1074
    .init = pc_init_pci,
1075
    .max_cpus = 255,
1076
    .is_default = 1,
1077
};
1078

    
1079
static QEMUMachine pc_machine_v0_12 = {
1080
    .name = "pc-0.12",
1081
    .desc = "Standard PC",
1082
    .init = pc_init_pci,
1083
    .max_cpus = 255,
1084
    .compat_props = (GlobalProperty[]) {
1085
        {
1086
            .driver   = "virtio-serial-pci",
1087
            .property = "max_nr_ports",
1088
            .value    = stringify(1),
1089
        },{
1090
            .driver   = "virtio-serial-pci",
1091
            .property = "vectors",
1092
            .value    = stringify(0),
1093
        },
1094
        { /* end of list */ }
1095
    }
1096
};
1097

    
1098
static QEMUMachine pc_machine_v0_11 = {
1099
    .name = "pc-0.11",
1100
    .desc = "Standard PC, qemu 0.11",
1101
    .init = pc_init_pci,
1102
    .max_cpus = 255,
1103
    .compat_props = (GlobalProperty[]) {
1104
        {
1105
            .driver   = "virtio-blk-pci",
1106
            .property = "vectors",
1107
            .value    = stringify(0),
1108
        },{
1109
            .driver   = "virtio-serial-pci",
1110
            .property = "max_nr_ports",
1111
            .value    = stringify(1),
1112
        },{
1113
            .driver   = "virtio-serial-pci",
1114
            .property = "vectors",
1115
            .value    = stringify(0),
1116
        },{
1117
            .driver   = "ide-drive",
1118
            .property = "ver",
1119
            .value    = "0.11",
1120
        },{
1121
            .driver   = "scsi-disk",
1122
            .property = "ver",
1123
            .value    = "0.11",
1124
        },{
1125
            .driver   = "PCI",
1126
            .property = "rombar",
1127
            .value    = stringify(0),
1128
        },
1129
        { /* end of list */ }
1130
    }
1131
};
1132

    
1133
static QEMUMachine pc_machine_v0_10 = {
1134
    .name = "pc-0.10",
1135
    .desc = "Standard PC, qemu 0.10",
1136
    .init = pc_init_pci,
1137
    .max_cpus = 255,
1138
    .compat_props = (GlobalProperty[]) {
1139
        {
1140
            .driver   = "virtio-blk-pci",
1141
            .property = "class",
1142
            .value    = stringify(PCI_CLASS_STORAGE_OTHER),
1143
        },{
1144
            .driver   = "virtio-serial-pci",
1145
            .property = "class",
1146
            .value    = stringify(PCI_CLASS_DISPLAY_OTHER),
1147
        },{
1148
            .driver   = "virtio-serial-pci",
1149
            .property = "max_nr_ports",
1150
            .value    = stringify(1),
1151
        },{
1152
            .driver   = "virtio-serial-pci",
1153
            .property = "vectors",
1154
            .value    = stringify(0),
1155
        },{
1156
            .driver   = "virtio-net-pci",
1157
            .property = "vectors",
1158
            .value    = stringify(0),
1159
        },{
1160
            .driver   = "virtio-blk-pci",
1161
            .property = "vectors",
1162
            .value    = stringify(0),
1163
        },{
1164
            .driver   = "ide-drive",
1165
            .property = "ver",
1166
            .value    = "0.10",
1167
        },{
1168
            .driver   = "scsi-disk",
1169
            .property = "ver",
1170
            .value    = "0.10",
1171
        },{
1172
            .driver   = "PCI",
1173
            .property = "rombar",
1174
            .value    = stringify(0),
1175
        },
1176
        { /* end of list */ }
1177
    },
1178
};
1179

    
1180
static QEMUMachine isapc_machine = {
1181
    .name = "isapc",
1182
    .desc = "ISA-only PC",
1183
    .init = pc_init_isa,
1184
    .max_cpus = 1,
1185
};
1186

    
1187
static void pc_machine_init(void)
1188
{
1189
    qemu_register_machine(&pc_machine);
1190
    qemu_register_machine(&pc_machine_v0_12);
1191
    qemu_register_machine(&pc_machine_v0_11);
1192
    qemu_register_machine(&pc_machine_v0_10);
1193
    qemu_register_machine(&isapc_machine);
1194
}
1195

    
1196
machine_init(pc_machine_init);