2 * QEMU PC System Emulator
4 * Copyright (c) 2003-2004 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
30 #include "audio/audio.h"
36 #include "virtio-blk.h"
37 #include "virtio-balloon.h"
38 #include "virtio-console.h"
39 #include "hpet_emul.h"
41 /* output Bochs bios info messages */
44 #define BIOS_FILENAME "bios.bin"
45 #define VGABIOS_FILENAME "vgabios.bin"
46 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
48 #define PC_MAX_BIOS_SIZE (4 * 1024 * 1024)
50 /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
51 #define ACPI_DATA_SIZE 0x10000
52 #define BIOS_CFG_IOPORT 0x510
53 #define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0)
57 extern uint8_t *acpi_tables
;
58 extern size_t acpi_tables_len
;
60 static fdctrl_t
*floppy_controller
;
61 static RTCState
*rtc_state
;
63 static IOAPICState
*ioapic
;
64 static PCIDevice
*i440fx_state
;
66 typedef struct rom_reset_data
{
68 target_phys_addr_t addr
;
72 static void option_rom_reset(void *_rrd
)
74 RomResetData
*rrd
= _rrd
;
76 cpu_physical_memory_write_rom(rrd
->addr
, rrd
->data
, rrd
->size
);
79 static void option_rom_setup_reset(target_phys_addr_t addr
, unsigned size
)
81 RomResetData
*rrd
= qemu_malloc(sizeof *rrd
);
83 rrd
->data
= qemu_malloc(size
);
84 cpu_physical_memory_read(addr
, rrd
->data
, size
);
87 qemu_register_reset(option_rom_reset
, rrd
);
90 static void ioport80_write(void *opaque
, uint32_t addr
, uint32_t data
)
94 /* MSDOS compatibility mode FPU exception support */
95 static qemu_irq ferr_irq
;
96 /* XXX: add IGNNE support */
97 void cpu_set_ferr(CPUX86State
*s
)
99 qemu_irq_raise(ferr_irq
);
102 static void ioportF0_write(void *opaque
, uint32_t addr
, uint32_t data
)
104 qemu_irq_lower(ferr_irq
);
108 uint64_t cpu_get_tsc(CPUX86State
*env
)
110 /* Note: when using kqemu, it is more logical to return the host TSC
111 because kqemu does not trap the RDTSC instruction for
112 performance reasons */
114 if (env
->kqemu_enabled
) {
115 return cpu_get_real_ticks();
119 return cpu_get_ticks();
124 void cpu_smm_update(CPUState
*env
)
126 if (i440fx_state
&& env
== first_cpu
)
127 i440fx_set_smm(i440fx_state
, (env
->hflags
>> HF_SMM_SHIFT
) & 1);
132 int cpu_get_pic_interrupt(CPUState
*env
)
136 intno
= apic_get_interrupt(env
);
138 /* set irq request if a PIC irq is still pending */
139 /* XXX: improve that */
140 pic_update_irq(isa_pic
);
143 /* read the irq from the PIC */
144 if (!apic_accept_pic_intr(env
))
147 intno
= pic_read_irq(isa_pic
);
151 static void pic_irq_request(void *opaque
, int irq
, int level
)
153 CPUState
*env
= first_cpu
;
155 if (env
->apic_state
) {
157 if (apic_accept_pic_intr(env
))
158 apic_deliver_pic_intr(env
, level
);
163 cpu_interrupt(env
, CPU_INTERRUPT_HARD
);
165 cpu_reset_interrupt(env
, CPU_INTERRUPT_HARD
);
169 /* PC cmos mappings */
171 #define REG_EQUIPMENT_BYTE 0x14
173 static int cmos_get_fd_drive_type(int fd0
)
179 /* 1.44 Mb 3"5 drive */
183 /* 2.88 Mb 3"5 drive */
187 /* 1.2 Mb 5"5 drive */
197 static void cmos_init_hd(int type_ofs
, int info_ofs
, BlockDriverState
*hd
)
199 RTCState
*s
= rtc_state
;
200 int cylinders
, heads
, sectors
;
201 bdrv_get_geometry_hint(hd
, &cylinders
, &heads
, §ors
);
202 rtc_set_memory(s
, type_ofs
, 47);
203 rtc_set_memory(s
, info_ofs
, cylinders
);
204 rtc_set_memory(s
, info_ofs
+ 1, cylinders
>> 8);
205 rtc_set_memory(s
, info_ofs
+ 2, heads
);
206 rtc_set_memory(s
, info_ofs
+ 3, 0xff);
207 rtc_set_memory(s
, info_ofs
+ 4, 0xff);
208 rtc_set_memory(s
, info_ofs
+ 5, 0xc0 | ((heads
> 8) << 3));
209 rtc_set_memory(s
, info_ofs
+ 6, cylinders
);
210 rtc_set_memory(s
, info_ofs
+ 7, cylinders
>> 8);
211 rtc_set_memory(s
, info_ofs
+ 8, sectors
);
214 /* convert boot_device letter to something recognizable by the bios */
215 static int boot_device2nibble(char boot_device
)
217 switch(boot_device
) {
220 return 0x01; /* floppy boot */
222 return 0x02; /* hard drive boot */
224 return 0x03; /* CD-ROM boot */
226 return 0x04; /* Network boot */
231 /* copy/pasted from cmos_init, should be made a general function
232 and used there as well */
233 static int pc_boot_set(void *opaque
, const char *boot_device
)
235 #define PC_MAX_BOOT_DEVICES 3
236 RTCState
*s
= (RTCState
*)opaque
;
237 int nbds
, bds
[3] = { 0, };
240 nbds
= strlen(boot_device
);
241 if (nbds
> PC_MAX_BOOT_DEVICES
) {
242 term_printf("Too many boot devices for PC\n");
245 for (i
= 0; i
< nbds
; i
++) {
246 bds
[i
] = boot_device2nibble(boot_device
[i
]);
248 term_printf("Invalid boot device for PC: '%c'\n",
253 rtc_set_memory(s
, 0x3d, (bds
[1] << 4) | bds
[0]);
254 rtc_set_memory(s
, 0x38, (bds
[2] << 4));
258 /* hd_table must contain 4 block drivers */
259 static void cmos_init(ram_addr_t ram_size
, ram_addr_t above_4g_mem_size
,
260 const char *boot_device
, BlockDriverState
**hd_table
)
262 RTCState
*s
= rtc_state
;
263 int nbds
, bds
[3] = { 0, };
268 /* various important CMOS locations needed by PC/Bochs bios */
271 val
= 640; /* base memory in K */
272 rtc_set_memory(s
, 0x15, val
);
273 rtc_set_memory(s
, 0x16, val
>> 8);
275 val
= (ram_size
/ 1024) - 1024;
278 rtc_set_memory(s
, 0x17, val
);
279 rtc_set_memory(s
, 0x18, val
>> 8);
280 rtc_set_memory(s
, 0x30, val
);
281 rtc_set_memory(s
, 0x31, val
>> 8);
283 if (above_4g_mem_size
) {
284 rtc_set_memory(s
, 0x5b, (unsigned int)above_4g_mem_size
>> 16);
285 rtc_set_memory(s
, 0x5c, (unsigned int)above_4g_mem_size
>> 24);
286 rtc_set_memory(s
, 0x5d, (uint64_t)above_4g_mem_size
>> 32);
289 if (ram_size
> (16 * 1024 * 1024))
290 val
= (ram_size
/ 65536) - ((16 * 1024 * 1024) / 65536);
295 rtc_set_memory(s
, 0x34, val
);
296 rtc_set_memory(s
, 0x35, val
>> 8);
298 /* set the number of CPU */
299 rtc_set_memory(s
, 0x5f, smp_cpus
- 1);
301 /* set boot devices, and disable floppy signature check if requested */
302 #define PC_MAX_BOOT_DEVICES 3
303 nbds
= strlen(boot_device
);
304 if (nbds
> PC_MAX_BOOT_DEVICES
) {
305 fprintf(stderr
, "Too many boot devices for PC\n");
308 for (i
= 0; i
< nbds
; i
++) {
309 bds
[i
] = boot_device2nibble(boot_device
[i
]);
311 fprintf(stderr
, "Invalid boot device for PC: '%c'\n",
316 rtc_set_memory(s
, 0x3d, (bds
[1] << 4) | bds
[0]);
317 rtc_set_memory(s
, 0x38, (bds
[2] << 4) | (fd_bootchk
? 0x0 : 0x1));
321 fd0
= fdctrl_get_drive_type(floppy_controller
, 0);
322 fd1
= fdctrl_get_drive_type(floppy_controller
, 1);
324 val
= (cmos_get_fd_drive_type(fd0
) << 4) | cmos_get_fd_drive_type(fd1
);
325 rtc_set_memory(s
, 0x10, val
);
337 val
|= 0x01; /* 1 drive, ready for boot */
340 val
|= 0x41; /* 2 drives, ready for boot */
343 val
|= 0x02; /* FPU is there */
344 val
|= 0x04; /* PS/2 mouse installed */
345 rtc_set_memory(s
, REG_EQUIPMENT_BYTE
, val
);
349 rtc_set_memory(s
, 0x12, (hd_table
[0] ? 0xf0 : 0) | (hd_table
[1] ? 0x0f : 0));
351 cmos_init_hd(0x19, 0x1b, hd_table
[0]);
353 cmos_init_hd(0x1a, 0x24, hd_table
[1]);
356 for (i
= 0; i
< 4; i
++) {
358 int cylinders
, heads
, sectors
, translation
;
359 /* NOTE: bdrv_get_geometry_hint() returns the physical
360 geometry. It is always such that: 1 <= sects <= 63, 1
361 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
362 geometry can be different if a translation is done. */
363 translation
= bdrv_get_translation_hint(hd_table
[i
]);
364 if (translation
== BIOS_ATA_TRANSLATION_AUTO
) {
365 bdrv_get_geometry_hint(hd_table
[i
], &cylinders
, &heads
, §ors
);
366 if (cylinders
<= 1024 && heads
<= 16 && sectors
<= 63) {
367 /* No translation. */
370 /* LBA translation. */
376 val
|= translation
<< (i
* 2);
379 rtc_set_memory(s
, 0x39, val
);
382 void ioport_set_a20(int enable
)
384 /* XXX: send to all CPUs ? */
385 cpu_x86_set_a20(first_cpu
, enable
);
388 int ioport_get_a20(void)
390 return ((first_cpu
->a20_mask
>> 20) & 1);
393 static void ioport92_write(void *opaque
, uint32_t addr
, uint32_t val
)
395 ioport_set_a20((val
>> 1) & 1);
396 /* XXX: bit 0 is fast reset */
399 static uint32_t ioport92_read(void *opaque
, uint32_t addr
)
401 return ioport_get_a20() << 1;
404 /***********************************************************/
405 /* Bochs BIOS debug ports */
407 static void bochs_bios_write(void *opaque
, uint32_t addr
, uint32_t val
)
409 static const char shutdown_str
[8] = "Shutdown";
410 static int shutdown_index
= 0;
413 /* Bochs BIOS messages */
416 fprintf(stderr
, "BIOS panic at rombios.c, line %d\n", val
);
421 fprintf(stderr
, "%c", val
);
425 /* same as Bochs power off */
426 if (val
== shutdown_str
[shutdown_index
]) {
428 if (shutdown_index
== 8) {
430 qemu_system_shutdown_request();
437 /* LGPL'ed VGA BIOS messages */
440 fprintf(stderr
, "VGA BIOS panic, line %d\n", val
);
445 fprintf(stderr
, "%c", val
);
451 static void bochs_bios_init(void)
455 register_ioport_write(0x400, 1, 2, bochs_bios_write
, NULL
);
456 register_ioport_write(0x401, 1, 2, bochs_bios_write
, NULL
);
457 register_ioport_write(0x402, 1, 1, bochs_bios_write
, NULL
);
458 register_ioport_write(0x403, 1, 1, bochs_bios_write
, NULL
);
459 register_ioport_write(0x8900, 1, 1, bochs_bios_write
, NULL
);
461 register_ioport_write(0x501, 1, 2, bochs_bios_write
, NULL
);
462 register_ioport_write(0x502, 1, 2, bochs_bios_write
, NULL
);
463 register_ioport_write(0x500, 1, 1, bochs_bios_write
, NULL
);
464 register_ioport_write(0x503, 1, 1, bochs_bios_write
, NULL
);
466 fw_cfg
= fw_cfg_init(BIOS_CFG_IOPORT
, BIOS_CFG_IOPORT
+ 1, 0, 0);
467 fw_cfg_add_i32(fw_cfg
, FW_CFG_ID
, 1);
468 fw_cfg_add_i64(fw_cfg
, FW_CFG_RAM_SIZE
, (uint64_t)ram_size
);
469 fw_cfg_add_bytes(fw_cfg
, FW_CFG_ACPI_TABLES
, acpi_tables
, acpi_tables_len
);
472 /* Generate an initial boot sector which sets state and jump to
473 a specified vector */
474 static void generate_bootsect(target_phys_addr_t option_rom
,
475 uint32_t gpr
[8], uint16_t segs
[6], uint16_t ip
)
477 uint8_t rom
[512], *p
, *reloc
;
481 memset(rom
, 0, sizeof(rom
));
484 /* Make sure we have an option rom signature */
488 /* ROM size in sectors*/
493 *p
++ = 0x50; /* push ax */
494 *p
++ = 0x1e; /* push ds */
495 *p
++ = 0x31; *p
++ = 0xc0; /* xor ax, ax */
496 *p
++ = 0x8e; *p
++ = 0xd8; /* mov ax, ds */
498 *p
++ = 0xc7; *p
++ = 0x06; /* movvw _start,0x64 */
499 *p
++ = 0x64; *p
++ = 0x00;
501 *p
++ = 0x00; *p
++ = 0x00;
503 *p
++ = 0x8c; *p
++ = 0x0e; /* mov cs,0x66 */
504 *p
++ = 0x66; *p
++ = 0x00;
506 *p
++ = 0x1f; /* pop ds */
507 *p
++ = 0x58; /* pop ax */
508 *p
++ = 0xcb; /* lret */
513 *p
++ = 0xfa; /* CLI */
514 *p
++ = 0xfc; /* CLD */
516 for (i
= 0; i
< 6; i
++) {
517 if (i
== 1) /* Skip CS */
520 *p
++ = 0xb8; /* MOV AX,imm16 */
523 *p
++ = 0x8e; /* MOV <seg>,AX */
524 *p
++ = 0xc0 + (i
<< 3);
527 for (i
= 0; i
< 8; i
++) {
528 *p
++ = 0x66; /* 32-bit operand size */
529 *p
++ = 0xb8 + i
; /* MOV <reg>,imm32 */
536 *p
++ = 0xea; /* JMP FAR */
539 *p
++ = segs
[1]; /* CS */
544 for (i
= 0; i
< (sizeof(rom
) - 1); i
++)
546 rom
[sizeof(rom
) - 1] = -sum
;
548 cpu_physical_memory_write_rom(option_rom
, rom
, sizeof(rom
));
549 option_rom_setup_reset(option_rom
, sizeof (rom
));
552 static long get_file_size(FILE *f
)
556 /* XXX: on Unix systems, using fstat() probably makes more sense */
559 fseek(f
, 0, SEEK_END
);
561 fseek(f
, where
, SEEK_SET
);
566 static void load_linux(target_phys_addr_t option_rom
,
567 const char *kernel_filename
,
568 const char *initrd_filename
,
569 const char *kernel_cmdline
)
575 int setup_size
, kernel_size
, initrd_size
, cmdline_size
;
577 uint8_t header
[1024];
578 target_phys_addr_t real_addr
, prot_addr
, cmdline_addr
, initrd_addr
;
581 /* Align to 16 bytes as a paranoia measure */
582 cmdline_size
= (strlen(kernel_cmdline
)+16) & ~15;
584 /* load the kernel header */
585 f
= fopen(kernel_filename
, "rb");
586 if (!f
|| !(kernel_size
= get_file_size(f
)) ||
587 fread(header
, 1, 1024, f
) != 1024) {
588 fprintf(stderr
, "qemu: could not load kernel '%s'\n",
593 /* kernel protocol version */
595 fprintf(stderr
, "header magic: %#x\n", ldl_p(header
+0x202));
597 if (ldl_p(header
+0x202) == 0x53726448)
598 protocol
= lduw_p(header
+0x206);
602 if (protocol
< 0x200 || !(header
[0x211] & 0x01)) {
605 cmdline_addr
= 0x9a000 - cmdline_size
;
607 } else if (protocol
< 0x202) {
608 /* High but ancient kernel */
610 cmdline_addr
= 0x9a000 - cmdline_size
;
611 prot_addr
= 0x100000;
613 /* High and recent kernel */
615 cmdline_addr
= 0x20000;
616 prot_addr
= 0x100000;
621 "qemu: real_addr = 0x" TARGET_FMT_plx
"\n"
622 "qemu: cmdline_addr = 0x" TARGET_FMT_plx
"\n"
623 "qemu: prot_addr = 0x" TARGET_FMT_plx
"\n",
629 /* highest address for loading the initrd */
630 if (protocol
>= 0x203)
631 initrd_max
= ldl_p(header
+0x22c);
633 initrd_max
= 0x37ffffff;
635 if (initrd_max
>= ram_size
-ACPI_DATA_SIZE
)
636 initrd_max
= ram_size
-ACPI_DATA_SIZE
-1;
638 /* kernel command line */
639 pstrcpy_targphys(cmdline_addr
, 4096, kernel_cmdline
);
641 if (protocol
>= 0x202) {
642 stl_p(header
+0x228, cmdline_addr
);
644 stw_p(header
+0x20, 0xA33F);
645 stw_p(header
+0x22, cmdline_addr
-real_addr
);
649 /* High nybble = B reserved for Qemu; low nybble is revision number.
650 If this code is substantially changed, you may want to consider
651 incrementing the revision. */
652 if (protocol
>= 0x200)
653 header
[0x210] = 0xB0;
656 if (protocol
>= 0x201) {
657 header
[0x211] |= 0x80; /* CAN_USE_HEAP */
658 stw_p(header
+0x224, cmdline_addr
-real_addr
-0x200);
662 if (initrd_filename
) {
663 if (protocol
< 0x200) {
664 fprintf(stderr
, "qemu: linux kernel too old to load a ram disk\n");
668 fi
= fopen(initrd_filename
, "rb");
670 fprintf(stderr
, "qemu: could not load initial ram disk '%s'\n",
675 initrd_size
= get_file_size(fi
);
676 initrd_addr
= (initrd_max
-initrd_size
) & ~4095;
678 fprintf(stderr
, "qemu: loading initrd (%#x bytes) at 0x" TARGET_FMT_plx
679 "\n", initrd_size
, initrd_addr
);
681 if (!fread_targphys_ok(initrd_addr
, initrd_size
, fi
)) {
682 fprintf(stderr
, "qemu: read error on initial ram disk '%s'\n",
688 stl_p(header
+0x218, initrd_addr
);
689 stl_p(header
+0x21c, initrd_size
);
692 /* store the finalized header and load the rest of the kernel */
693 cpu_physical_memory_write(real_addr
, header
, 1024);
695 setup_size
= header
[0x1f1];
699 setup_size
= (setup_size
+1)*512;
700 kernel_size
-= setup_size
; /* Size of protected-mode code */
702 if (!fread_targphys_ok(real_addr
+1024, setup_size
-1024, f
) ||
703 !fread_targphys_ok(prot_addr
, kernel_size
, f
)) {
704 fprintf(stderr
, "qemu: read error on kernel '%s'\n",
710 /* generate bootsector to set up the initial register state */
711 real_seg
= real_addr
>> 4;
712 seg
[0] = seg
[2] = seg
[3] = seg
[4] = seg
[4] = real_seg
;
713 seg
[1] = real_seg
+0x20; /* CS */
714 memset(gpr
, 0, sizeof gpr
);
715 gpr
[4] = cmdline_addr
-real_addr
-16; /* SP (-16 is paranoia) */
717 option_rom_setup_reset(real_addr
, setup_size
);
718 option_rom_setup_reset(prot_addr
, kernel_size
);
719 option_rom_setup_reset(cmdline_addr
, cmdline_size
);
721 option_rom_setup_reset(initrd_addr
, initrd_size
);
723 generate_bootsect(option_rom
, gpr
, seg
, 0);
726 static void main_cpu_reset(void *opaque
)
728 CPUState
*env
= opaque
;
732 static const int ide_iobase
[2] = { 0x1f0, 0x170 };
733 static const int ide_iobase2
[2] = { 0x3f6, 0x376 };
734 static const int ide_irq
[2] = { 14, 15 };
736 #define NE2000_NB_MAX 6
738 static int ne2000_io
[NE2000_NB_MAX
] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
739 static int ne2000_irq
[NE2000_NB_MAX
] = { 9, 10, 11, 3, 4, 5 };
741 static int serial_io
[MAX_SERIAL_PORTS
] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
742 static int serial_irq
[MAX_SERIAL_PORTS
] = { 4, 3, 4, 3 };
744 static int parallel_io
[MAX_PARALLEL_PORTS
] = { 0x378, 0x278, 0x3bc };
745 static int parallel_irq
[MAX_PARALLEL_PORTS
] = { 7, 7, 7 };
748 static void audio_init (PCIBus
*pci_bus
, qemu_irq
*pic
)
751 int audio_enabled
= 0;
753 for (c
= soundhw
; !audio_enabled
&& c
->name
; ++c
) {
754 audio_enabled
= c
->enabled
;
762 for (c
= soundhw
; c
->name
; ++c
) {
765 c
->init
.init_isa (s
, pic
);
769 c
->init
.init_pci (pci_bus
, s
);
779 static void pc_init_ne2k_isa(NICInfo
*nd
, qemu_irq
*pic
)
781 static int nb_ne2k
= 0;
783 if (nb_ne2k
== NE2000_NB_MAX
)
785 isa_ne2000_init(ne2000_io
[nb_ne2k
], pic
[ne2000_irq
[nb_ne2k
]], nd
);
789 /* PC hardware initialisation */
790 static void pc_init1(ram_addr_t ram_size
, int vga_ram_size
,
791 const char *boot_device
,
792 const char *kernel_filename
, const char *kernel_cmdline
,
793 const char *initrd_filename
,
794 int pci_enabled
, const char *cpu_model
)
797 int ret
, linux_boot
, i
;
798 ram_addr_t ram_addr
, vga_ram_addr
, bios_offset
, vga_bios_offset
;
799 ram_addr_t below_4g_mem_size
, above_4g_mem_size
= 0;
800 int bios_size
, isa_bios_size
, vga_bios_size
;
802 int piix3_devfn
= -1;
807 BlockDriverState
*hd
[MAX_IDE_BUS
* MAX_IDE_DEVS
];
808 BlockDriverState
*fd
[MAX_FD
];
810 if (ram_size
>= 0xe0000000 ) {
811 above_4g_mem_size
= ram_size
- 0xe0000000;
812 below_4g_mem_size
= 0xe0000000;
814 below_4g_mem_size
= ram_size
;
817 linux_boot
= (kernel_filename
!= NULL
);
820 if (cpu_model
== NULL
) {
822 cpu_model
= "qemu64";
824 cpu_model
= "qemu32";
828 for(i
= 0; i
< smp_cpus
; i
++) {
829 env
= cpu_init(cpu_model
);
831 fprintf(stderr
, "Unable to find x86 CPU definition\n");
837 /* XXX: enable it in all cases */
838 env
->cpuid_features
|= CPUID_APIC
;
840 qemu_register_reset(main_cpu_reset
, env
);
849 ram_addr
= qemu_ram_alloc(0xa0000);
850 cpu_register_physical_memory(0, 0xa0000, ram_addr
);
852 /* Allocate, even though we won't register, so we don't break the
853 * phys_ram_base + PA assumption. This range includes vga (0xa0000 - 0xc0000),
854 * and some bios areas, which will be registered later
856 ram_addr
= qemu_ram_alloc(0x100000 - 0xa0000);
857 ram_addr
= qemu_ram_alloc(below_4g_mem_size
- 0x100000);
858 cpu_register_physical_memory(0x100000,
859 below_4g_mem_size
- 0x100000,
862 /* above 4giga memory allocation */
863 if (above_4g_mem_size
> 0) {
864 ram_addr
= qemu_ram_alloc(above_4g_mem_size
);
865 cpu_register_physical_memory(0x100000000ULL
,
871 /* allocate VGA RAM */
872 vga_ram_addr
= qemu_ram_alloc(vga_ram_size
);
875 if (bios_name
== NULL
)
876 bios_name
= BIOS_FILENAME
;
877 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, bios_name
);
878 bios_size
= get_image_size(buf
);
879 if (bios_size
<= 0 ||
880 (bios_size
% 65536) != 0) {
883 bios_offset
= qemu_ram_alloc(bios_size
);
884 ret
= load_image(buf
, phys_ram_base
+ bios_offset
);
885 if (ret
!= bios_size
) {
887 fprintf(stderr
, "qemu: could not load PC BIOS '%s'\n", buf
);
891 if (cirrus_vga_enabled
|| std_vga_enabled
|| vmsvga_enabled
) {
893 if (cirrus_vga_enabled
) {
894 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, VGABIOS_CIRRUS_FILENAME
);
896 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, VGABIOS_FILENAME
);
898 vga_bios_size
= get_image_size(buf
);
899 if (vga_bios_size
<= 0 || vga_bios_size
> 65536)
901 vga_bios_offset
= qemu_ram_alloc(65536);
903 ret
= load_image(buf
, phys_ram_base
+ vga_bios_offset
);
904 if (ret
!= vga_bios_size
) {
906 fprintf(stderr
, "qemu: could not load VGA BIOS '%s'\n", buf
);
910 /* setup basic memory access */
911 cpu_register_physical_memory(0xc0000, 0x10000,
912 vga_bios_offset
| IO_MEM_ROM
);
915 /* map the last 128KB of the BIOS in ISA space */
916 isa_bios_size
= bios_size
;
917 if (isa_bios_size
> (128 * 1024))
918 isa_bios_size
= 128 * 1024;
919 cpu_register_physical_memory(0x100000 - isa_bios_size
,
921 (bios_offset
+ bios_size
- isa_bios_size
) | IO_MEM_ROM
);
924 ram_addr_t option_rom_offset
;
929 option_rom_offset
= qemu_ram_alloc(TARGET_PAGE_SIZE
);
930 cpu_register_physical_memory(0xd0000, TARGET_PAGE_SIZE
,
933 kernel_filename
, initrd_filename
, kernel_cmdline
);
934 offset
= TARGET_PAGE_SIZE
;
937 for (i
= 0; i
< nb_option_roms
; i
++) {
938 size
= get_image_size(option_rom
[i
]);
940 fprintf(stderr
, "Could not load option rom '%s'\n",
944 if (size
> (0x10000 - offset
))
945 goto option_rom_error
;
946 option_rom_offset
= qemu_ram_alloc(size
);
947 ret
= load_image(option_rom
[i
], phys_ram_base
+ option_rom_offset
);
950 fprintf(stderr
, "Too many option ROMS\n");
953 size
= (size
+ 4095) & ~4095;
954 cpu_register_physical_memory(0xd0000 + offset
,
955 size
, option_rom_offset
| IO_MEM_ROM
);
960 /* map all the bios at the top of memory */
961 cpu_register_physical_memory((uint32_t)(-bios_size
),
962 bios_size
, bios_offset
| IO_MEM_ROM
);
966 cpu_irq
= qemu_allocate_irqs(pic_irq_request
, NULL
, 1);
967 i8259
= i8259_init(cpu_irq
[0]);
968 ferr_irq
= i8259
[13];
971 pci_bus
= i440fx_init(&i440fx_state
, i8259
);
972 piix3_devfn
= piix3_init(pci_bus
, -1);
977 /* init basic PC hardware */
978 register_ioport_write(0x80, 1, 1, ioport80_write
, NULL
);
980 register_ioport_write(0xf0, 1, 1, ioportF0_write
, NULL
);
982 if (cirrus_vga_enabled
) {
984 pci_cirrus_vga_init(pci_bus
,
985 phys_ram_base
+ vga_ram_addr
,
986 vga_ram_addr
, vga_ram_size
);
988 isa_cirrus_vga_init(phys_ram_base
+ vga_ram_addr
,
989 vga_ram_addr
, vga_ram_size
);
991 } else if (vmsvga_enabled
) {
993 pci_vmsvga_init(pci_bus
, phys_ram_base
+ vga_ram_addr
,
994 vga_ram_addr
, vga_ram_size
);
996 fprintf(stderr
, "%s: vmware_vga: no PCI bus\n", __FUNCTION__
);
997 } else if (std_vga_enabled
) {
999 pci_vga_init(pci_bus
, phys_ram_base
+ vga_ram_addr
,
1000 vga_ram_addr
, vga_ram_size
, 0, 0);
1002 isa_vga_init(phys_ram_base
+ vga_ram_addr
,
1003 vga_ram_addr
, vga_ram_size
);
1007 rtc_state
= rtc_init(0x70, i8259
[8], 2000);
1009 qemu_register_boot_set(pc_boot_set
, rtc_state
);
1011 register_ioport_read(0x92, 1, 1, ioport92_read
, NULL
);
1012 register_ioport_write(0x92, 1, 1, ioport92_write
, NULL
);
1015 ioapic
= ioapic_init();
1017 pit
= pit_init(0x40, i8259
[0]);
1023 pic_set_alt_irq_func(isa_pic
, ioapic_set_irq
, ioapic
);
1026 for(i
= 0; i
< MAX_SERIAL_PORTS
; i
++) {
1027 if (serial_hds
[i
]) {
1028 serial_init(serial_io
[i
], i8259
[serial_irq
[i
]], 115200,
1033 for(i
= 0; i
< MAX_PARALLEL_PORTS
; i
++) {
1034 if (parallel_hds
[i
]) {
1035 parallel_init(parallel_io
[i
], i8259
[parallel_irq
[i
]],
1040 for(i
= 0; i
< nb_nics
; i
++) {
1041 NICInfo
*nd
= &nd_table
[i
];
1043 if (!pci_enabled
|| (nd
->model
&& strcmp(nd
->model
, "ne2k_isa") == 0))
1044 pc_init_ne2k_isa(nd
, i8259
);
1046 pci_nic_init(pci_bus
, nd
, -1, "ne2k_pci");
1049 qemu_system_hot_add_init();
1051 if (drive_get_max_bus(IF_IDE
) >= MAX_IDE_BUS
) {
1052 fprintf(stderr
, "qemu: too many IDE bus\n");
1056 for(i
= 0; i
< MAX_IDE_BUS
* MAX_IDE_DEVS
; i
++) {
1057 index
= drive_get_index(IF_IDE
, i
/ MAX_IDE_DEVS
, i
% MAX_IDE_DEVS
);
1059 hd
[i
] = drives_table
[index
].bdrv
;
1065 pci_piix3_ide_init(pci_bus
, hd
, piix3_devfn
+ 1, i8259
);
1067 for(i
= 0; i
< MAX_IDE_BUS
; i
++) {
1068 isa_ide_init(ide_iobase
[i
], ide_iobase2
[i
], i8259
[ide_irq
[i
]],
1069 hd
[MAX_IDE_DEVS
* i
], hd
[MAX_IDE_DEVS
* i
+ 1]);
1073 i8042_init(i8259
[1], i8259
[12], 0x60);
1076 audio_init(pci_enabled
? pci_bus
: NULL
, i8259
);
1079 for(i
= 0; i
< MAX_FD
; i
++) {
1080 index
= drive_get_index(IF_FLOPPY
, 0, i
);
1082 fd
[i
] = drives_table
[index
].bdrv
;
1086 floppy_controller
= fdctrl_init(i8259
[6], 2, 0, 0x3f0, fd
);
1088 cmos_init(below_4g_mem_size
, above_4g_mem_size
, boot_device
, hd
);
1090 if (pci_enabled
&& usb_enabled
) {
1091 usb_uhci_piix3_init(pci_bus
, piix3_devfn
+ 2);
1094 if (pci_enabled
&& acpi_enabled
) {
1095 uint8_t *eeprom_buf
= qemu_mallocz(8 * 256); /* XXX: make this persistent */
1098 /* TODO: Populate SPD eeprom data. */
1099 smbus
= piix4_pm_init(pci_bus
, piix3_devfn
+ 3, 0xb100, i8259
[9]);
1100 for (i
= 0; i
< 8; i
++) {
1101 smbus_eeprom_device_init(smbus
, 0x50 + i
, eeprom_buf
+ (i
* 256));
1106 i440fx_init_memory_mappings(i440fx_state
);
1114 max_bus
= drive_get_max_bus(IF_SCSI
);
1116 for (bus
= 0; bus
<= max_bus
; bus
++) {
1117 scsi
= lsi_scsi_init(pci_bus
, -1);
1118 for (unit
= 0; unit
< LSI_MAX_DEVS
; unit
++) {
1119 index
= drive_get_index(IF_SCSI
, bus
, unit
);
1122 lsi_scsi_attach(scsi
, drives_table
[index
].bdrv
, unit
);
1127 /* Add virtio block devices */
1132 while ((index
= drive_get_index(IF_VIRTIO
, 0, unit_id
)) != -1) {
1133 virtio_blk_init(pci_bus
, drives_table
[index
].bdrv
);
1138 /* Add virtio balloon device */
1140 virtio_balloon_init(pci_bus
);
1142 /* Add virtio console devices */
1144 for(i
= 0; i
< MAX_VIRTIO_CONSOLES
; i
++) {
1146 virtio_console_init(pci_bus
, virtcon_hds
[i
]);
1151 static void pc_init_pci(ram_addr_t ram_size
, int vga_ram_size
,
1152 const char *boot_device
,
1153 const char *kernel_filename
,
1154 const char *kernel_cmdline
,
1155 const char *initrd_filename
,
1156 const char *cpu_model
)
1158 pc_init1(ram_size
, vga_ram_size
, boot_device
,
1159 kernel_filename
, kernel_cmdline
,
1160 initrd_filename
, 1, cpu_model
);
1163 static void pc_init_isa(ram_addr_t ram_size
, int vga_ram_size
,
1164 const char *boot_device
,
1165 const char *kernel_filename
,
1166 const char *kernel_cmdline
,
1167 const char *initrd_filename
,
1168 const char *cpu_model
)
1170 pc_init1(ram_size
, vga_ram_size
, boot_device
,
1171 kernel_filename
, kernel_cmdline
,
1172 initrd_filename
, 0, cpu_model
);
1175 /* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
1176 BIOS will read it and start S3 resume at POST Entry */
1177 void cmos_set_s3_resume(void)
1180 rtc_set_memory(rtc_state
, 0xF, 0xFE);
1183 QEMUMachine pc_machine
= {
1185 .desc
= "Standard PC",
1186 .init
= pc_init_pci
,
1187 .ram_require
= VGA_RAM_SIZE
+ PC_MAX_BIOS_SIZE
,
1191 QEMUMachine isapc_machine
= {
1193 .desc
= "ISA-only PC",
1194 .init
= pc_init_isa
,
1195 .ram_require
= VGA_RAM_SIZE
+ PC_MAX_BIOS_SIZE
,