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"
37 /* output Bochs bios info messages */
40 #define BIOS_FILENAME "bios.bin"
41 #define VGABIOS_FILENAME "vgabios.bin"
42 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
43 #define EXTBOOT_FILENAME "extboot.bin"
45 /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
46 #define ACPI_DATA_SIZE 0x10000
50 static fdctrl_t
*floppy_controller
;
51 static RTCState
*rtc_state
;
53 static IOAPICState
*ioapic
;
54 static PCIDevice
*i440fx_state
;
56 static void ioport80_write(void *opaque
, uint32_t addr
, uint32_t data
)
60 /* MSDOS compatibility mode FPU exception support */
61 static qemu_irq ferr_irq
;
62 /* XXX: add IGNNE support */
63 void cpu_set_ferr(CPUX86State
*s
)
65 qemu_irq_raise(ferr_irq
);
68 static void ioportF0_write(void *opaque
, uint32_t addr
, uint32_t data
)
70 qemu_irq_lower(ferr_irq
);
74 uint64_t cpu_get_tsc(CPUX86State
*env
)
76 /* Note: when using kqemu, it is more logical to return the host TSC
77 because kqemu does not trap the RDTSC instruction for
78 performance reasons */
80 if (env
->kqemu_enabled
) {
81 return cpu_get_real_ticks();
85 return cpu_get_ticks();
90 void cpu_smm_update(CPUState
*env
)
92 if (i440fx_state
&& env
== first_cpu
)
93 i440fx_set_smm(i440fx_state
, (env
->hflags
>> HF_SMM_SHIFT
) & 1);
98 int cpu_get_pic_interrupt(CPUState
*env
)
102 intno
= apic_get_interrupt(env
);
104 /* set irq request if a PIC irq is still pending */
105 /* XXX: improve that */
106 pic_update_irq(isa_pic
);
109 /* read the irq from the PIC */
110 if (!apic_accept_pic_intr(env
))
113 intno
= pic_read_irq(isa_pic
);
117 static void pic_irq_request(void *opaque
, int irq
, int level
)
119 CPUState
*env
= opaque
;
120 if (level
&& apic_accept_pic_intr(env
))
121 cpu_interrupt(env
, CPU_INTERRUPT_HARD
);
124 /* PC cmos mappings */
126 #define REG_EQUIPMENT_BYTE 0x14
128 static int cmos_get_fd_drive_type(int fd0
)
134 /* 1.44 Mb 3"5 drive */
138 /* 2.88 Mb 3"5 drive */
142 /* 1.2 Mb 5"5 drive */
152 static void cmos_init_hd(int type_ofs
, int info_ofs
, BlockDriverState
*hd
)
154 RTCState
*s
= rtc_state
;
155 int cylinders
, heads
, sectors
;
156 bdrv_get_geometry_hint(hd
, &cylinders
, &heads
, §ors
);
157 rtc_set_memory(s
, type_ofs
, 47);
158 rtc_set_memory(s
, info_ofs
, cylinders
);
159 rtc_set_memory(s
, info_ofs
+ 1, cylinders
>> 8);
160 rtc_set_memory(s
, info_ofs
+ 2, heads
);
161 rtc_set_memory(s
, info_ofs
+ 3, 0xff);
162 rtc_set_memory(s
, info_ofs
+ 4, 0xff);
163 rtc_set_memory(s
, info_ofs
+ 5, 0xc0 | ((heads
> 8) << 3));
164 rtc_set_memory(s
, info_ofs
+ 6, cylinders
);
165 rtc_set_memory(s
, info_ofs
+ 7, cylinders
>> 8);
166 rtc_set_memory(s
, info_ofs
+ 8, sectors
);
169 /* convert boot_device letter to something recognizable by the bios */
170 static int boot_device2nibble(char boot_device
)
172 switch(boot_device
) {
175 return 0x01; /* floppy boot */
177 return 0x02; /* hard drive boot */
179 return 0x03; /* CD-ROM boot */
181 return 0x04; /* Network boot */
186 /* hd_table must contain 4 block drivers */
187 static void cmos_init(ram_addr_t ram_size
, ram_addr_t above_4g_mem_size
,
188 const char *boot_device
, BlockDriverState
**hd_table
,
191 RTCState
*s
= rtc_state
;
192 int nbds
, bds
[3] = { 0, };
197 /* various important CMOS locations needed by PC/Bochs bios */
200 val
= 640; /* base memory in K */
201 rtc_set_memory(s
, 0x15, val
);
202 rtc_set_memory(s
, 0x16, val
>> 8);
204 val
= (ram_size
/ 1024) - 1024;
207 rtc_set_memory(s
, 0x17, val
);
208 rtc_set_memory(s
, 0x18, val
>> 8);
209 rtc_set_memory(s
, 0x30, val
);
210 rtc_set_memory(s
, 0x31, val
>> 8);
212 if (above_4g_mem_size
) {
213 rtc_set_memory(s
, 0x5b, (unsigned int)above_4g_mem_size
>> 16);
214 rtc_set_memory(s
, 0x5c, (unsigned int)above_4g_mem_size
>> 24);
215 rtc_set_memory(s
, 0x5d, above_4g_mem_size
>> 32);
217 rtc_set_memory(s
, 0x5f, smp_cpus
- 1);
219 if (ram_size
> (16 * 1024 * 1024))
220 val
= (ram_size
/ 65536) - ((16 * 1024 * 1024) / 65536);
225 rtc_set_memory(s
, 0x34, val
);
226 rtc_set_memory(s
, 0x35, val
>> 8);
228 /* set boot devices, and disable floppy signature check if requested */
229 #define PC_MAX_BOOT_DEVICES 3
230 nbds
= strlen(boot_device
);
231 if (nbds
> PC_MAX_BOOT_DEVICES
) {
232 fprintf(stderr
, "Too many boot devices for PC\n");
235 for (i
= 0; i
< nbds
; i
++) {
236 bds
[i
] = boot_device2nibble(boot_device
[i
]);
238 fprintf(stderr
, "Invalid boot device for PC: '%c'\n",
243 rtc_set_memory(s
, 0x3d, (bds
[1] << 4) | bds
[0]);
244 rtc_set_memory(s
, 0x38, (bds
[2] << 4) | (fd_bootchk
? 0x0 : 0x1));
248 fd0
= fdctrl_get_drive_type(floppy_controller
, 0);
249 fd1
= fdctrl_get_drive_type(floppy_controller
, 1);
251 val
= (cmos_get_fd_drive_type(fd0
) << 4) | cmos_get_fd_drive_type(fd1
);
252 rtc_set_memory(s
, 0x10, val
);
264 val
|= 0x01; /* 1 drive, ready for boot */
267 val
|= 0x41; /* 2 drives, ready for boot */
270 val
|= 0x02; /* FPU is there */
271 val
|= 0x04; /* PS/2 mouse installed */
272 rtc_set_memory(s
, REG_EQUIPMENT_BYTE
, val
);
276 rtc_set_memory(s
, 0x12, (hd_table
[0] ? 0xf0 : 0) | (hd_table
[1] ? 0x0f : 0));
278 cmos_init_hd(0x19, 0x1b, hd_table
[0]);
280 cmos_init_hd(0x1a, 0x24, hd_table
[1]);
283 for (i
= 0; i
< 4; i
++) {
285 int cylinders
, heads
, sectors
, translation
;
286 /* NOTE: bdrv_get_geometry_hint() returns the physical
287 geometry. It is always such that: 1 <= sects <= 63, 1
288 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
289 geometry can be different if a translation is done. */
290 translation
= bdrv_get_translation_hint(hd_table
[i
]);
291 if (translation
== BIOS_ATA_TRANSLATION_AUTO
) {
292 bdrv_get_geometry_hint(hd_table
[i
], &cylinders
, &heads
, §ors
);
293 if (cylinders
<= 1024 && heads
<= 16 && sectors
<= 63) {
294 /* No translation. */
297 /* LBA translation. */
303 val
|= translation
<< (i
* 2);
306 rtc_set_memory(s
, 0x39, val
);
309 void ioport_set_a20(int enable
)
311 /* XXX: send to all CPUs ? */
312 cpu_x86_set_a20(first_cpu
, enable
);
315 int ioport_get_a20(void)
317 return ((first_cpu
->a20_mask
>> 20) & 1);
320 static void ioport92_write(void *opaque
, uint32_t addr
, uint32_t val
)
322 ioport_set_a20((val
>> 1) & 1);
323 /* XXX: bit 0 is fast reset */
326 static uint32_t ioport92_read(void *opaque
, uint32_t addr
)
328 return ioport_get_a20() << 1;
331 /***********************************************************/
332 /* Bochs BIOS debug ports */
334 static void bochs_bios_write(void *opaque
, uint32_t addr
, uint32_t val
)
336 static const char shutdown_str
[8] = "Shutdown";
337 static int shutdown_index
= 0;
340 /* Bochs BIOS messages */
343 fprintf(stderr
, "BIOS panic at rombios.c, line %d\n", val
);
348 fprintf(stderr
, "%c", val
);
352 /* same as Bochs power off */
353 if (val
== shutdown_str
[shutdown_index
]) {
355 if (shutdown_index
== 8) {
357 qemu_system_shutdown_request();
364 /* LGPL'ed VGA BIOS messages */
367 fprintf(stderr
, "VGA BIOS panic, line %d\n", val
);
372 fprintf(stderr
, "%c", val
);
378 static void bochs_bios_init(void)
380 register_ioport_write(0x400, 1, 2, bochs_bios_write
, NULL
);
381 register_ioport_write(0x401, 1, 2, bochs_bios_write
, NULL
);
382 register_ioport_write(0x402, 1, 1, bochs_bios_write
, NULL
);
383 register_ioport_write(0x403, 1, 1, bochs_bios_write
, NULL
);
384 register_ioport_write(0x8900, 1, 1, bochs_bios_write
, NULL
);
386 register_ioport_write(0x501, 1, 2, bochs_bios_write
, NULL
);
387 register_ioport_write(0x502, 1, 2, bochs_bios_write
, NULL
);
388 register_ioport_write(0x500, 1, 1, bochs_bios_write
, NULL
);
389 register_ioport_write(0x503, 1, 1, bochs_bios_write
, NULL
);
392 /* Generate an initial boot sector which sets state and jump to
393 a specified vector */
394 static void generate_bootsect(uint32_t gpr
[8], uint16_t segs
[6], uint16_t ip
)
396 uint8_t bootsect
[512], *p
;
400 hda
= drive_get_index(IF_IDE
, 0, 0);
402 fprintf(stderr
, "A disk image must be given for 'hda' when booting "
407 memset(bootsect
, 0, sizeof(bootsect
));
409 /* Copy the MSDOS partition table if possible */
410 bdrv_read(drives_table
[hda
].bdrv
, 0, bootsect
, 1);
412 /* Make sure we have a partition signature */
413 bootsect
[510] = 0x55;
414 bootsect
[511] = 0xaa;
418 *p
++ = 0xfa; /* CLI */
419 *p
++ = 0xfc; /* CLD */
421 for (i
= 0; i
< 6; i
++) {
422 if (i
== 1) /* Skip CS */
425 *p
++ = 0xb8; /* MOV AX,imm16 */
428 *p
++ = 0x8e; /* MOV <seg>,AX */
429 *p
++ = 0xc0 + (i
<< 3);
432 for (i
= 0; i
< 8; i
++) {
433 *p
++ = 0x66; /* 32-bit operand size */
434 *p
++ = 0xb8 + i
; /* MOV <reg>,imm32 */
441 *p
++ = 0xea; /* JMP FAR */
444 *p
++ = segs
[1]; /* CS */
447 bdrv_set_boot_sector(drives_table
[hda
].bdrv
, bootsect
, sizeof(bootsect
));
450 static int load_kernel(const char *filename
, uint8_t *addr
,
456 fd
= open(filename
, O_RDONLY
| O_BINARY
);
460 /* load 16 bit code */
461 if (read(fd
, real_addr
, 512) != 512)
463 setup_sects
= real_addr
[0x1F1];
466 if (read(fd
, real_addr
+ 512, setup_sects
* 512) !=
470 /* load 32 bit code */
471 size
= read(fd
, addr
, 16 * 1024 * 1024);
481 static long get_file_size(FILE *f
)
485 /* XXX: on Unix systems, using fstat() probably makes more sense */
488 fseek(f
, 0, SEEK_END
);
490 fseek(f
, where
, SEEK_SET
);
495 static void load_linux(const char *kernel_filename
,
496 const char *initrd_filename
,
497 const char *kernel_cmdline
)
503 int setup_size
, kernel_size
, initrd_size
, cmdline_size
;
505 uint8_t header
[1024];
506 uint8_t *real_addr
, *prot_addr
, *cmdline_addr
, *initrd_addr
;
509 /* Align to 16 bytes as a paranoia measure */
510 cmdline_size
= (strlen(kernel_cmdline
)+16) & ~15;
512 /* load the kernel header */
513 f
= fopen(kernel_filename
, "rb");
514 if (!f
|| !(kernel_size
= get_file_size(f
)) ||
515 fread(header
, 1, 1024, f
) != 1024) {
516 fprintf(stderr
, "qemu: could not load kernel '%s'\n",
521 /* kernel protocol version */
523 fprintf(stderr
, "header magic: %#x\n", ldl_p(header
+0x202));
525 if (ldl_p(header
+0x202) == 0x53726448)
526 protocol
= lduw_p(header
+0x206);
530 if (protocol
< 0x200 || !(header
[0x211] & 0x01)) {
532 real_addr
= phys_ram_base
+ 0x90000;
533 cmdline_addr
= phys_ram_base
+ 0x9a000 - cmdline_size
;
534 prot_addr
= phys_ram_base
+ 0x10000;
535 } else if (protocol
< 0x202) {
536 /* High but ancient kernel */
537 real_addr
= phys_ram_base
+ 0x90000;
538 cmdline_addr
= phys_ram_base
+ 0x9a000 - cmdline_size
;
539 prot_addr
= phys_ram_base
+ 0x100000;
541 /* High and recent kernel */
542 real_addr
= phys_ram_base
+ 0x10000;
543 cmdline_addr
= phys_ram_base
+ 0x20000;
544 prot_addr
= phys_ram_base
+ 0x100000;
549 "qemu: real_addr = %#zx\n"
550 "qemu: cmdline_addr = %#zx\n"
551 "qemu: prot_addr = %#zx\n",
552 real_addr
-phys_ram_base
,
553 cmdline_addr
-phys_ram_base
,
554 prot_addr
-phys_ram_base
);
557 /* highest address for loading the initrd */
558 if (protocol
>= 0x203)
559 initrd_max
= ldl_p(header
+0x22c);
561 initrd_max
= 0x37ffffff;
563 if (initrd_max
>= ram_size
-ACPI_DATA_SIZE
)
564 initrd_max
= ram_size
-ACPI_DATA_SIZE
-1;
566 /* kernel command line */
567 pstrcpy((char*)cmdline_addr
, 4096, kernel_cmdline
);
569 if (protocol
>= 0x202) {
570 stl_p(header
+0x228, cmdline_addr
-phys_ram_base
);
572 stw_p(header
+0x20, 0xA33F);
573 stw_p(header
+0x22, cmdline_addr
-real_addr
);
577 /* High nybble = B reserved for Qemu; low nybble is revision number.
578 If this code is substantially changed, you may want to consider
579 incrementing the revision. */
580 if (protocol
>= 0x200)
581 header
[0x210] = 0xB0;
584 if (protocol
>= 0x201) {
585 header
[0x211] |= 0x80; /* CAN_USE_HEAP */
586 stw_p(header
+0x224, cmdline_addr
-real_addr
-0x200);
590 if (initrd_filename
) {
591 if (protocol
< 0x200) {
592 fprintf(stderr
, "qemu: linux kernel too old to load a ram disk\n");
596 fi
= fopen(initrd_filename
, "rb");
598 fprintf(stderr
, "qemu: could not load initial ram disk '%s'\n",
603 initrd_size
= get_file_size(fi
);
604 initrd_addr
= phys_ram_base
+ ((initrd_max
-initrd_size
) & ~4095);
606 fprintf(stderr
, "qemu: loading initrd (%#x bytes) at %#zx\n",
607 initrd_size
, initrd_addr
-phys_ram_base
);
609 if (fread(initrd_addr
, 1, initrd_size
, fi
) != initrd_size
) {
610 fprintf(stderr
, "qemu: read error on initial ram disk '%s'\n",
616 stl_p(header
+0x218, initrd_addr
-phys_ram_base
);
617 stl_p(header
+0x21c, initrd_size
);
620 /* store the finalized header and load the rest of the kernel */
621 memcpy(real_addr
, header
, 1024);
623 setup_size
= header
[0x1f1];
627 setup_size
= (setup_size
+1)*512;
628 kernel_size
-= setup_size
; /* Size of protected-mode code */
630 if (fread(real_addr
+1024, 1, setup_size
-1024, f
) != setup_size
-1024 ||
631 fread(prot_addr
, 1, kernel_size
, f
) != kernel_size
) {
632 fprintf(stderr
, "qemu: read error on kernel '%s'\n",
638 /* generate bootsector to set up the initial register state */
639 real_seg
= (real_addr
-phys_ram_base
) >> 4;
640 seg
[0] = seg
[2] = seg
[3] = seg
[4] = seg
[4] = real_seg
;
641 seg
[1] = real_seg
+0x20; /* CS */
642 memset(gpr
, 0, sizeof gpr
);
643 gpr
[4] = cmdline_addr
-real_addr
-16; /* SP (-16 is paranoia) */
645 generate_bootsect(gpr
, seg
, 0);
648 static void main_cpu_reset(void *opaque
)
650 CPUState
*env
= opaque
;
654 static const int ide_iobase
[2] = { 0x1f0, 0x170 };
655 static const int ide_iobase2
[2] = { 0x3f6, 0x376 };
656 static const int ide_irq
[2] = { 14, 15 };
658 #define NE2000_NB_MAX 6
660 static int ne2000_io
[NE2000_NB_MAX
] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
661 static int ne2000_irq
[NE2000_NB_MAX
] = { 9, 10, 11, 3, 4, 5 };
663 static int serial_io
[MAX_SERIAL_PORTS
] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
664 static int serial_irq
[MAX_SERIAL_PORTS
] = { 4, 3, 4, 3 };
666 static int parallel_io
[MAX_PARALLEL_PORTS
] = { 0x378, 0x278, 0x3bc };
667 static int parallel_irq
[MAX_PARALLEL_PORTS
] = { 7, 7, 7 };
670 static void audio_init (PCIBus
*pci_bus
, qemu_irq
*pic
)
673 int audio_enabled
= 0;
675 for (c
= soundhw
; !audio_enabled
&& c
->name
; ++c
) {
676 audio_enabled
= c
->enabled
;
684 for (c
= soundhw
; c
->name
; ++c
) {
687 c
->init
.init_isa (s
, pic
);
691 c
->init
.init_pci (pci_bus
, s
);
701 static void pc_init_ne2k_isa(NICInfo
*nd
, qemu_irq
*pic
)
703 static int nb_ne2k
= 0;
705 if (nb_ne2k
== NE2000_NB_MAX
)
707 isa_ne2000_init(ne2000_io
[nb_ne2k
], pic
[ne2000_irq
[nb_ne2k
]], nd
);
711 static int load_option_rom(const char *filename
, int offset
)
713 ram_addr_t option_rom_offset
;
716 size
= get_image_size(filename
);
718 fprintf(stderr
, "Could not load option rom '%s'\n", filename
);
721 if (size
> (0x10000 - offset
))
722 goto option_rom_error
;
723 option_rom_offset
= qemu_ram_alloc(size
);
724 ret
= load_image(filename
, phys_ram_base
+ option_rom_offset
);
727 fprintf(stderr
, "Too many option ROMS\n");
730 size
= (size
+ 4095) & ~4095;
731 cpu_register_physical_memory(0xd0000 + offset
,
732 size
, option_rom_offset
| IO_MEM_ROM
);
734 kvm_cpu_register_physical_memory(0xd0000 + offset
,
735 size
, option_rom_offset
|
740 CPUState
*pc_new_cpu(int cpu
, const char *cpu_model
, int pci_enabled
)
742 CPUState
*env
= cpu_init(cpu_model
);
744 fprintf(stderr
, "Unable to find x86 CPU definition\n");
748 env
->hflags
|= HF_HALTED_MASK
;
750 /* XXX: enable it in all cases */
751 env
->cpuid_features
|= CPUID_APIC
;
753 register_savevm("cpu", cpu
, 4, cpu_save
, cpu_load
, env
);
754 qemu_register_reset(main_cpu_reset
, env
);
762 /* PC hardware initialisation */
763 static void pc_init1(ram_addr_t ram_size
, int vga_ram_size
,
764 const char *boot_device
, DisplayState
*ds
,
765 const char *kernel_filename
, const char *kernel_cmdline
,
766 const char *initrd_filename
,
767 int pci_enabled
, const char *cpu_model
)
770 int ret
, linux_boot
, i
;
771 ram_addr_t ram_addr
, vga_ram_addr
, bios_offset
, vga_bios_offset
;
772 ram_addr_t above_4g_mem_size
= 0;
773 int bios_size
, isa_bios_size
, vga_bios_size
, opt_rom_offset
;
775 int piix3_devfn
= -1;
781 BlockDriverState
*hd
[MAX_IDE_BUS
* MAX_IDE_DEVS
];
782 BlockDriverState
*fd
[MAX_FD
];
784 if (ram_size
>= 0xe0000000 ) {
785 above_4g_mem_size
= ram_size
- 0xe0000000;
786 ram_size
= 0xe0000000;
789 linux_boot
= (kernel_filename
!= NULL
);
792 if (cpu_model
== NULL
) {
794 cpu_model
= "qemu64";
796 cpu_model
= "qemu32";
800 for(i
= 0; i
< smp_cpus
; i
++) {
801 env
= pc_new_cpu(i
, cpu_model
, pci_enabled
);
805 #ifdef KVM_CAP_USER_MEMORY
806 if (kvm_enabled() && kvm_qemu_check_extension(KVM_CAP_USER_MEMORY
)) {
807 ram_addr
= qemu_ram_alloc(0xa0000);
808 cpu_register_physical_memory(0, 0xa0000, ram_addr
);
809 kvm_cpu_register_physical_memory(0, 0xa0000, ram_addr
);
811 ram_addr
= qemu_ram_alloc(0x100000 - 0xa0000); // hole
812 ram_addr
= qemu_ram_alloc(ram_size
- 0x100000);
813 cpu_register_physical_memory(0x100000, ram_size
- 0x100000, ram_addr
);
814 kvm_cpu_register_physical_memory(0x100000, ram_size
- 0x100000,
819 ram_addr
= qemu_ram_alloc(ram_size
);
820 cpu_register_physical_memory(0, ram_size
, ram_addr
);
822 /* allocate VGA RAM */
823 vga_ram_addr
= qemu_ram_alloc(vga_ram_size
);
826 if (bios_name
== NULL
)
827 bios_name
= BIOS_FILENAME
;
828 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, bios_name
);
829 bios_size
= get_image_size(buf
);
830 if (bios_size
<= 0 ||
831 (bios_size
% 65536) != 0) {
834 bios_offset
= qemu_ram_alloc(bios_size
);
835 ret
= load_image(buf
, phys_ram_base
+ bios_offset
);
836 if (ret
!= bios_size
) {
838 fprintf(stderr
, "qemu: could not load PC BIOS '%s'\n", buf
);
843 if (cirrus_vga_enabled
) {
844 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, VGABIOS_CIRRUS_FILENAME
);
846 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, VGABIOS_FILENAME
);
848 vga_bios_size
= get_image_size(buf
);
849 if (vga_bios_size
<= 0 || vga_bios_size
> 65536)
851 vga_bios_offset
= qemu_ram_alloc(65536);
853 ret
= load_image(buf
, phys_ram_base
+ vga_bios_offset
);
854 if (ret
!= vga_bios_size
) {
856 fprintf(stderr
, "qemu: could not load VGA BIOS '%s'\n", buf
);
860 /* above 4giga memory allocation */
861 if (above_4g_mem_size
> 0) {
862 ram_addr
= qemu_ram_alloc(above_4g_mem_size
);
864 if (ram_addr
& (hpagesize
-1)) {
865 unsigned long aligned_addr
;
866 aligned_addr
= (ram_addr
+ hpagesize
- 1) &
868 qemu_ram_alloc(aligned_addr
- ram_addr
);
869 ram_addr
= aligned_addr
;
872 cpu_register_physical_memory(0x100000000, above_4g_mem_size
, ram_addr
);
875 kvm_cpu_register_physical_memory(0x100000000,
880 /* setup basic memory access */
881 cpu_register_physical_memory(0xc0000, 0x10000,
882 vga_bios_offset
| IO_MEM_ROM
);
884 kvm_cpu_register_physical_memory(0xc0000, 0x10000,
885 vga_bios_offset
| IO_MEM_ROM
);
887 /* map the last 128KB of the BIOS in ISA space */
888 isa_bios_size
= bios_size
;
889 if (isa_bios_size
> (128 * 1024))
890 isa_bios_size
= 128 * 1024;
891 cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size
,
893 /* kvm tpr optimization needs the bios accessible for write, at least to qemu itself */
894 cpu_register_physical_memory(0x100000 - isa_bios_size
,
896 (bios_offset
+ bios_size
- isa_bios_size
) /* | IO_MEM_ROM */);
898 kvm_cpu_register_physical_memory(0x100000 - isa_bios_size
,
900 (bios_offset
+ bios_size
- isa_bios_size
) | IO_MEM_ROM
);
903 for (i
= 0; i
< nb_option_roms
; i
++)
904 opt_rom_offset
+= load_option_rom(option_rom
[i
], opt_rom_offset
);
906 if (extboot_drive
!= -1) {
907 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, EXTBOOT_FILENAME
);
908 opt_rom_offset
+= load_option_rom(buf
, opt_rom_offset
);
911 /* map all the bios at the top of memory */
912 cpu_register_physical_memory((uint32_t)(-bios_size
),
913 bios_size
, bios_offset
| IO_MEM_ROM
);
916 #ifdef KVM_CAP_USER_MEMORY
917 r
= kvm_qemu_check_extension(KVM_CAP_USER_MEMORY
);
919 kvm_cpu_register_physical_memory((uint32_t)(-bios_size
),
920 bios_size
, bios_offset
| IO_MEM_ROM
);
924 bios_mem
= kvm_cpu_create_phys_mem((uint32_t)(-bios_size
),
928 memcpy(bios_mem
, phys_ram_base
+ bios_offset
, bios_size
);
935 load_linux(kernel_filename
, initrd_filename
, kernel_cmdline
);
937 cpu_irq
= qemu_allocate_irqs(pic_irq_request
, first_cpu
, 1);
938 i8259
= i8259_init(cpu_irq
[0]);
939 ferr_irq
= i8259
[13];
942 pci_bus
= i440fx_init(&i440fx_state
, i8259
);
943 piix3_devfn
= piix3_init(pci_bus
, -1);
948 /* init basic PC hardware */
949 register_ioport_write(0x80, 1, 1, ioport80_write
, NULL
);
951 register_ioport_write(0xf0, 1, 1, ioportF0_write
, NULL
);
953 if (cirrus_vga_enabled
) {
955 pci_cirrus_vga_init(pci_bus
,
956 ds
, phys_ram_base
+ vga_ram_addr
,
957 vga_ram_addr
, vga_ram_size
);
959 isa_cirrus_vga_init(ds
, phys_ram_base
+ vga_ram_addr
,
960 vga_ram_addr
, vga_ram_size
);
962 } else if (vmsvga_enabled
) {
964 pci_vmsvga_init(pci_bus
, ds
, phys_ram_base
+ vga_ram_addr
,
965 vga_ram_addr
, vga_ram_size
);
967 fprintf(stderr
, "%s: vmware_vga: no PCI bus\n", __FUNCTION__
);
970 pci_vga_init(pci_bus
, ds
, phys_ram_base
+ vga_ram_addr
,
971 vga_ram_addr
, vga_ram_size
, 0, 0);
973 isa_vga_init(ds
, phys_ram_base
+ vga_ram_addr
,
974 vga_ram_addr
, vga_ram_size
);
978 rtc_state
= rtc_init(0x70, i8259
[8]);
980 register_ioport_read(0x92, 1, 1, ioport92_read
, NULL
);
981 register_ioport_write(0x92, 1, 1, ioport92_write
, NULL
);
984 ioapic
= ioapic_init();
986 pit
= pit_init(0x40, i8259
[0]);
989 pic_set_alt_irq_func(isa_pic
, ioapic_set_irq
, ioapic
);
992 for(i
= 0; i
< MAX_SERIAL_PORTS
; i
++) {
994 serial_init(serial_io
[i
], i8259
[serial_irq
[i
]], serial_hds
[i
]);
998 for(i
= 0; i
< MAX_PARALLEL_PORTS
; i
++) {
999 if (parallel_hds
[i
]) {
1000 parallel_init(parallel_io
[i
], i8259
[parallel_irq
[i
]],
1005 for(i
= 0; i
< nb_nics
; i
++) {
1009 nd
->model
= "rtl8139";
1011 nd
->model
= "ne2k_isa";
1014 if (strcmp(nd
->model
, "ne2k_isa") == 0) {
1015 pc_init_ne2k_isa(nd
, i8259
);
1016 } else if (pci_enabled
) {
1017 if (strcmp(nd
->model
, "?") == 0)
1018 fprintf(stderr
, "qemu: Supported ISA NICs: ne2k_isa\n");
1019 pci_nic_init(pci_bus
, nd
, -1);
1020 } else if (strcmp(nd
->model
, "?") == 0) {
1021 fprintf(stderr
, "qemu: Supported ISA NICs: ne2k_isa\n");
1024 fprintf(stderr
, "qemu: Unsupported NIC: %s\n", nd
->model
);
1029 qemu_system_hot_add_init(cpu_model
);
1030 #define USE_HYPERCALL
1031 #ifdef USE_HYPERCALL
1032 pci_hypercall_init(pci_bus
);
1035 if (drive_get_max_bus(IF_IDE
) >= MAX_IDE_BUS
) {
1036 fprintf(stderr
, "qemu: too many IDE bus\n");
1040 for(i
= 0; i
< MAX_IDE_BUS
* MAX_IDE_DEVS
; i
++) {
1041 index
= drive_get_index(IF_IDE
, i
/ MAX_IDE_DEVS
, i
% MAX_IDE_DEVS
);
1043 hd
[i
] = drives_table
[index
].bdrv
;
1049 pci_piix3_ide_init(pci_bus
, hd
, piix3_devfn
+ 1, i8259
);
1051 for(i
= 0; i
< MAX_IDE_BUS
; i
++) {
1052 isa_ide_init(ide_iobase
[i
], ide_iobase2
[i
], i8259
[ide_irq
[i
]],
1053 hd
[MAX_IDE_DEVS
* i
], hd
[MAX_IDE_DEVS
* i
+ 1]);
1057 i8042_init(i8259
[1], i8259
[12], 0x60);
1060 audio_init(pci_enabled
? pci_bus
: NULL
, i8259
);
1063 for(i
= 0; i
< MAX_FD
; i
++) {
1064 index
= drive_get_index(IF_FLOPPY
, 0, i
);
1066 fd
[i
] = drives_table
[index
].bdrv
;
1070 floppy_controller
= fdctrl_init(i8259
[6], 2, 0, 0x3f0, fd
);
1072 cmos_init(ram_size
, above_4g_mem_size
, boot_device
, hd
, smp_cpus
);
1074 if (pci_enabled
&& usb_enabled
) {
1075 usb_uhci_piix3_init(pci_bus
, piix3_devfn
+ 2);
1078 if (pci_enabled
&& acpi_enabled
) {
1079 uint8_t *eeprom_buf
= qemu_mallocz(8 * 256); /* XXX: make this persistent */
1082 /* TODO: Populate SPD eeprom data. */
1083 smbus
= piix4_pm_init(pci_bus
, piix3_devfn
+ 3, 0xb100, i8259
[9]);
1084 for (i
= 0; i
< 8; i
++) {
1085 smbus_eeprom_device_init(smbus
, 0x50 + i
, eeprom_buf
+ (i
* 256));
1090 i440fx_init_memory_mappings(i440fx_state
);
1098 max_bus
= drive_get_max_bus(IF_SCSI
);
1100 for (bus
= 0; bus
<= max_bus
; bus
++) {
1101 scsi
= lsi_scsi_init(pci_bus
, -1);
1102 for (unit
= 0; unit
< LSI_MAX_DEVS
; unit
++) {
1103 index
= drive_get_index(IF_SCSI
, bus
, unit
);
1106 lsi_scsi_attach(scsi
, drives_table
[index
].bdrv
, unit
);
1111 /* Add virtio block devices */
1116 while ((index
= drive_get_index(IF_VIRTIO
, 0, unit_id
)) != -1) {
1117 virtio_blk_init(pci_bus
, 0x1AF4, 0x1001,
1118 drives_table
[index
].bdrv
);
1123 if (extboot_drive
!= -1) {
1124 DriveInfo
*info
= &drives_table
[extboot_drive
];
1125 int cyls
, heads
, secs
;
1127 if (info
->type
!= IF_IDE
) {
1128 bdrv_guess_geometry(info
->bdrv
, &cyls
, &heads
, &secs
);
1129 bdrv_set_geometry_hint(info
->bdrv
, cyls
, heads
, secs
);
1132 extboot_init(info
->bdrv
, 1);
1136 static void pc_init_pci(ram_addr_t ram_size
, int vga_ram_size
,
1137 const char *boot_device
, DisplayState
*ds
,
1138 const char *kernel_filename
,
1139 const char *kernel_cmdline
,
1140 const char *initrd_filename
,
1141 const char *cpu_model
)
1143 pc_init1(ram_size
, vga_ram_size
, boot_device
, ds
,
1144 kernel_filename
, kernel_cmdline
,
1145 initrd_filename
, 1, cpu_model
);
1148 static void pc_init_isa(ram_addr_t ram_size
, int vga_ram_size
,
1149 const char *boot_device
, DisplayState
*ds
,
1150 const char *kernel_filename
,
1151 const char *kernel_cmdline
,
1152 const char *initrd_filename
,
1153 const char *cpu_model
)
1155 pc_init1(ram_size
, vga_ram_size
, boot_device
, ds
,
1156 kernel_filename
, kernel_cmdline
,
1157 initrd_filename
, 0, cpu_model
);
1160 QEMUMachine pc_machine
= {
1166 QEMUMachine isapc_machine
= {