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 /* output Bochs bios info messages */
39 #define BIOS_FILENAME "bios.bin"
40 #define VGABIOS_FILENAME "vgabios.bin"
41 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
43 #define PC_MAX_BIOS_SIZE (4 * 1024 * 1024)
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
= first_cpu
;
121 if (env
->apic_state
) {
123 if (apic_accept_pic_intr(env
))
124 apic_deliver_pic_intr(env
, level
);
129 cpu_interrupt(env
, CPU_INTERRUPT_HARD
);
131 cpu_reset_interrupt(env
, CPU_INTERRUPT_HARD
);
135 /* PC cmos mappings */
137 #define REG_EQUIPMENT_BYTE 0x14
139 static int cmos_get_fd_drive_type(int fd0
)
145 /* 1.44 Mb 3"5 drive */
149 /* 2.88 Mb 3"5 drive */
153 /* 1.2 Mb 5"5 drive */
163 static void cmos_init_hd(int type_ofs
, int info_ofs
, BlockDriverState
*hd
)
165 RTCState
*s
= rtc_state
;
166 int cylinders
, heads
, sectors
;
167 bdrv_get_geometry_hint(hd
, &cylinders
, &heads
, §ors
);
168 rtc_set_memory(s
, type_ofs
, 47);
169 rtc_set_memory(s
, info_ofs
, cylinders
);
170 rtc_set_memory(s
, info_ofs
+ 1, cylinders
>> 8);
171 rtc_set_memory(s
, info_ofs
+ 2, heads
);
172 rtc_set_memory(s
, info_ofs
+ 3, 0xff);
173 rtc_set_memory(s
, info_ofs
+ 4, 0xff);
174 rtc_set_memory(s
, info_ofs
+ 5, 0xc0 | ((heads
> 8) << 3));
175 rtc_set_memory(s
, info_ofs
+ 6, cylinders
);
176 rtc_set_memory(s
, info_ofs
+ 7, cylinders
>> 8);
177 rtc_set_memory(s
, info_ofs
+ 8, sectors
);
180 /* convert boot_device letter to something recognizable by the bios */
181 static int boot_device2nibble(char boot_device
)
183 switch(boot_device
) {
186 return 0x01; /* floppy boot */
188 return 0x02; /* hard drive boot */
190 return 0x03; /* CD-ROM boot */
192 return 0x04; /* Network boot */
197 /* copy/pasted from cmos_init, should be made a general function
198 and used there as well */
199 static int pc_boot_set(void *opaque
, const char *boot_device
)
201 #define PC_MAX_BOOT_DEVICES 3
202 RTCState
*s
= (RTCState
*)opaque
;
203 int nbds
, bds
[3] = { 0, };
206 nbds
= strlen(boot_device
);
207 if (nbds
> PC_MAX_BOOT_DEVICES
) {
208 term_printf("Too many boot devices for PC\n");
211 for (i
= 0; i
< nbds
; i
++) {
212 bds
[i
] = boot_device2nibble(boot_device
[i
]);
214 term_printf("Invalid boot device for PC: '%c'\n",
219 rtc_set_memory(s
, 0x3d, (bds
[1] << 4) | bds
[0]);
220 rtc_set_memory(s
, 0x38, (bds
[2] << 4));
224 /* hd_table must contain 4 block drivers */
225 static void cmos_init(ram_addr_t ram_size
, ram_addr_t above_4g_mem_size
,
226 const char *boot_device
, BlockDriverState
**hd_table
)
228 RTCState
*s
= rtc_state
;
229 int nbds
, bds
[3] = { 0, };
234 /* various important CMOS locations needed by PC/Bochs bios */
237 val
= 640; /* base memory in K */
238 rtc_set_memory(s
, 0x15, val
);
239 rtc_set_memory(s
, 0x16, val
>> 8);
241 val
= (ram_size
/ 1024) - 1024;
244 rtc_set_memory(s
, 0x17, val
);
245 rtc_set_memory(s
, 0x18, val
>> 8);
246 rtc_set_memory(s
, 0x30, val
);
247 rtc_set_memory(s
, 0x31, val
>> 8);
249 if (above_4g_mem_size
) {
250 rtc_set_memory(s
, 0x5b, (unsigned int)above_4g_mem_size
>> 16);
251 rtc_set_memory(s
, 0x5c, (unsigned int)above_4g_mem_size
>> 24);
252 rtc_set_memory(s
, 0x5d, (uint64_t)above_4g_mem_size
>> 32);
255 if (ram_size
> (16 * 1024 * 1024))
256 val
= (ram_size
/ 65536) - ((16 * 1024 * 1024) / 65536);
261 rtc_set_memory(s
, 0x34, val
);
262 rtc_set_memory(s
, 0x35, val
>> 8);
264 /* set the number of CPU */
265 rtc_set_memory(s
, 0x5f, smp_cpus
- 1);
267 /* set boot devices, and disable floppy signature check if requested */
268 #define PC_MAX_BOOT_DEVICES 3
269 nbds
= strlen(boot_device
);
270 if (nbds
> PC_MAX_BOOT_DEVICES
) {
271 fprintf(stderr
, "Too many boot devices for PC\n");
274 for (i
= 0; i
< nbds
; i
++) {
275 bds
[i
] = boot_device2nibble(boot_device
[i
]);
277 fprintf(stderr
, "Invalid boot device for PC: '%c'\n",
282 rtc_set_memory(s
, 0x3d, (bds
[1] << 4) | bds
[0]);
283 rtc_set_memory(s
, 0x38, (bds
[2] << 4) | (fd_bootchk
? 0x0 : 0x1));
287 fd0
= fdctrl_get_drive_type(floppy_controller
, 0);
288 fd1
= fdctrl_get_drive_type(floppy_controller
, 1);
290 val
= (cmos_get_fd_drive_type(fd0
) << 4) | cmos_get_fd_drive_type(fd1
);
291 rtc_set_memory(s
, 0x10, val
);
303 val
|= 0x01; /* 1 drive, ready for boot */
306 val
|= 0x41; /* 2 drives, ready for boot */
309 val
|= 0x02; /* FPU is there */
310 val
|= 0x04; /* PS/2 mouse installed */
311 rtc_set_memory(s
, REG_EQUIPMENT_BYTE
, val
);
315 rtc_set_memory(s
, 0x12, (hd_table
[0] ? 0xf0 : 0) | (hd_table
[1] ? 0x0f : 0));
317 cmos_init_hd(0x19, 0x1b, hd_table
[0]);
319 cmos_init_hd(0x1a, 0x24, hd_table
[1]);
322 for (i
= 0; i
< 4; i
++) {
324 int cylinders
, heads
, sectors
, translation
;
325 /* NOTE: bdrv_get_geometry_hint() returns the physical
326 geometry. It is always such that: 1 <= sects <= 63, 1
327 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
328 geometry can be different if a translation is done. */
329 translation
= bdrv_get_translation_hint(hd_table
[i
]);
330 if (translation
== BIOS_ATA_TRANSLATION_AUTO
) {
331 bdrv_get_geometry_hint(hd_table
[i
], &cylinders
, &heads
, §ors
);
332 if (cylinders
<= 1024 && heads
<= 16 && sectors
<= 63) {
333 /* No translation. */
336 /* LBA translation. */
342 val
|= translation
<< (i
* 2);
345 rtc_set_memory(s
, 0x39, val
);
348 void ioport_set_a20(int enable
)
350 /* XXX: send to all CPUs ? */
351 cpu_x86_set_a20(first_cpu
, enable
);
354 int ioport_get_a20(void)
356 return ((first_cpu
->a20_mask
>> 20) & 1);
359 static void ioport92_write(void *opaque
, uint32_t addr
, uint32_t val
)
361 ioport_set_a20((val
>> 1) & 1);
362 /* XXX: bit 0 is fast reset */
365 static uint32_t ioport92_read(void *opaque
, uint32_t addr
)
367 return ioport_get_a20() << 1;
370 /***********************************************************/
371 /* Bochs BIOS debug ports */
373 static void bochs_bios_write(void *opaque
, uint32_t addr
, uint32_t val
)
375 static const char shutdown_str
[8] = "Shutdown";
376 static int shutdown_index
= 0;
379 /* Bochs BIOS messages */
382 fprintf(stderr
, "BIOS panic at rombios.c, line %d\n", val
);
387 fprintf(stderr
, "%c", val
);
391 /* same as Bochs power off */
392 if (val
== shutdown_str
[shutdown_index
]) {
394 if (shutdown_index
== 8) {
396 qemu_system_shutdown_request();
403 /* LGPL'ed VGA BIOS messages */
406 fprintf(stderr
, "VGA BIOS panic, line %d\n", val
);
411 fprintf(stderr
, "%c", val
);
417 static void bochs_bios_init(void)
419 register_ioport_write(0x400, 1, 2, bochs_bios_write
, NULL
);
420 register_ioport_write(0x401, 1, 2, bochs_bios_write
, NULL
);
421 register_ioport_write(0x402, 1, 1, bochs_bios_write
, NULL
);
422 register_ioport_write(0x403, 1, 1, bochs_bios_write
, NULL
);
423 register_ioport_write(0x8900, 1, 1, bochs_bios_write
, NULL
);
425 register_ioport_write(0x501, 1, 2, bochs_bios_write
, NULL
);
426 register_ioport_write(0x502, 1, 2, bochs_bios_write
, NULL
);
427 register_ioport_write(0x500, 1, 1, bochs_bios_write
, NULL
);
428 register_ioport_write(0x503, 1, 1, bochs_bios_write
, NULL
);
431 /* Generate an initial boot sector which sets state and jump to
432 a specified vector */
433 static void generate_bootsect(uint32_t gpr
[8], uint16_t segs
[6], uint16_t ip
)
435 uint8_t bootsect
[512], *p
;
439 hda
= drive_get_index(IF_IDE
, 0, 0);
441 fprintf(stderr
, "A disk image must be given for 'hda' when booting "
442 "a Linux kernel\n(if you really don't want it, use /dev/zero)\n");
446 memset(bootsect
, 0, sizeof(bootsect
));
448 /* Copy the MSDOS partition table if possible */
449 bdrv_read(drives_table
[hda
].bdrv
, 0, bootsect
, 1);
451 /* Make sure we have a partition signature */
452 bootsect
[510] = 0x55;
453 bootsect
[511] = 0xaa;
457 *p
++ = 0xfa; /* CLI */
458 *p
++ = 0xfc; /* CLD */
460 for (i
= 0; i
< 6; i
++) {
461 if (i
== 1) /* Skip CS */
464 *p
++ = 0xb8; /* MOV AX,imm16 */
467 *p
++ = 0x8e; /* MOV <seg>,AX */
468 *p
++ = 0xc0 + (i
<< 3);
471 for (i
= 0; i
< 8; i
++) {
472 *p
++ = 0x66; /* 32-bit operand size */
473 *p
++ = 0xb8 + i
; /* MOV <reg>,imm32 */
480 *p
++ = 0xea; /* JMP FAR */
483 *p
++ = segs
[1]; /* CS */
486 bdrv_set_boot_sector(drives_table
[hda
].bdrv
, bootsect
, sizeof(bootsect
));
489 static long get_file_size(FILE *f
)
493 /* XXX: on Unix systems, using fstat() probably makes more sense */
496 fseek(f
, 0, SEEK_END
);
498 fseek(f
, where
, SEEK_SET
);
503 static void load_linux(const char *kernel_filename
,
504 const char *initrd_filename
,
505 const char *kernel_cmdline
)
511 int setup_size
, kernel_size
, initrd_size
, cmdline_size
;
513 uint8_t header
[1024];
514 target_phys_addr_t real_addr
, prot_addr
, cmdline_addr
, initrd_addr
;
517 /* Align to 16 bytes as a paranoia measure */
518 cmdline_size
= (strlen(kernel_cmdline
)+16) & ~15;
520 /* load the kernel header */
521 f
= fopen(kernel_filename
, "rb");
522 if (!f
|| !(kernel_size
= get_file_size(f
)) ||
523 fread(header
, 1, 1024, f
) != 1024) {
524 fprintf(stderr
, "qemu: could not load kernel '%s'\n",
529 /* kernel protocol version */
531 fprintf(stderr
, "header magic: %#x\n", ldl_p(header
+0x202));
533 if (ldl_p(header
+0x202) == 0x53726448)
534 protocol
= lduw_p(header
+0x206);
538 if (protocol
< 0x200 || !(header
[0x211] & 0x01)) {
541 cmdline_addr
= 0x9a000 - cmdline_size
;
543 } else if (protocol
< 0x202) {
544 /* High but ancient kernel */
546 cmdline_addr
= 0x9a000 - cmdline_size
;
547 prot_addr
= 0x100000;
549 /* High and recent kernel */
551 cmdline_addr
= 0x20000;
552 prot_addr
= 0x100000;
557 "qemu: real_addr = 0x" TARGET_FMT_plx
"\n"
558 "qemu: cmdline_addr = 0x" TARGET_FMT_plx
"\n"
559 "qemu: prot_addr = 0x" TARGET_FMT_plx
"\n",
565 /* highest address for loading the initrd */
566 if (protocol
>= 0x203)
567 initrd_max
= ldl_p(header
+0x22c);
569 initrd_max
= 0x37ffffff;
571 if (initrd_max
>= ram_size
-ACPI_DATA_SIZE
)
572 initrd_max
= ram_size
-ACPI_DATA_SIZE
-1;
574 /* kernel command line */
575 pstrcpy_targphys(cmdline_addr
, 4096, kernel_cmdline
);
577 if (protocol
>= 0x202) {
578 stl_p(header
+0x228, cmdline_addr
);
580 stw_p(header
+0x20, 0xA33F);
581 stw_p(header
+0x22, cmdline_addr
-real_addr
);
585 /* High nybble = B reserved for Qemu; low nybble is revision number.
586 If this code is substantially changed, you may want to consider
587 incrementing the revision. */
588 if (protocol
>= 0x200)
589 header
[0x210] = 0xB0;
592 if (protocol
>= 0x201) {
593 header
[0x211] |= 0x80; /* CAN_USE_HEAP */
594 stw_p(header
+0x224, cmdline_addr
-real_addr
-0x200);
598 if (initrd_filename
) {
599 if (protocol
< 0x200) {
600 fprintf(stderr
, "qemu: linux kernel too old to load a ram disk\n");
604 fi
= fopen(initrd_filename
, "rb");
606 fprintf(stderr
, "qemu: could not load initial ram disk '%s'\n",
611 initrd_size
= get_file_size(fi
);
612 initrd_addr
= (initrd_max
-initrd_size
) & ~4095;
614 fprintf(stderr
, "qemu: loading initrd (%#x bytes) at 0x" TARGET_FMT_plx
615 "\n", initrd_size
, initrd_addr
);
617 if (!fread_targphys_ok(initrd_addr
, initrd_size
, fi
)) {
618 fprintf(stderr
, "qemu: read error on initial ram disk '%s'\n",
624 stl_p(header
+0x218, initrd_addr
);
625 stl_p(header
+0x21c, initrd_size
);
628 /* store the finalized header and load the rest of the kernel */
629 cpu_physical_memory_write(real_addr
, header
, 1024);
631 setup_size
= header
[0x1f1];
635 setup_size
= (setup_size
+1)*512;
636 kernel_size
-= setup_size
; /* Size of protected-mode code */
638 if (!fread_targphys_ok(real_addr
+1024, setup_size
-1024, f
) ||
639 !fread_targphys_ok(prot_addr
, kernel_size
, f
)) {
640 fprintf(stderr
, "qemu: read error on kernel '%s'\n",
646 /* generate bootsector to set up the initial register state */
647 real_seg
= real_addr
>> 4;
648 seg
[0] = seg
[2] = seg
[3] = seg
[4] = seg
[4] = real_seg
;
649 seg
[1] = real_seg
+0x20; /* CS */
650 memset(gpr
, 0, sizeof gpr
);
651 gpr
[4] = cmdline_addr
-real_addr
-16; /* SP (-16 is paranoia) */
653 generate_bootsect(gpr
, seg
, 0);
656 static void main_cpu_reset(void *opaque
)
658 CPUState
*env
= opaque
;
662 static const int ide_iobase
[2] = { 0x1f0, 0x170 };
663 static const int ide_iobase2
[2] = { 0x3f6, 0x376 };
664 static const int ide_irq
[2] = { 14, 15 };
666 #define NE2000_NB_MAX 6
668 static int ne2000_io
[NE2000_NB_MAX
] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
669 static int ne2000_irq
[NE2000_NB_MAX
] = { 9, 10, 11, 3, 4, 5 };
671 static int serial_io
[MAX_SERIAL_PORTS
] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
672 static int serial_irq
[MAX_SERIAL_PORTS
] = { 4, 3, 4, 3 };
674 static int parallel_io
[MAX_PARALLEL_PORTS
] = { 0x378, 0x278, 0x3bc };
675 static int parallel_irq
[MAX_PARALLEL_PORTS
] = { 7, 7, 7 };
678 static void audio_init (PCIBus
*pci_bus
, qemu_irq
*pic
)
681 int audio_enabled
= 0;
683 for (c
= soundhw
; !audio_enabled
&& c
->name
; ++c
) {
684 audio_enabled
= c
->enabled
;
692 for (c
= soundhw
; c
->name
; ++c
) {
695 c
->init
.init_isa (s
, pic
);
699 c
->init
.init_pci (pci_bus
, s
);
709 static void pc_init_ne2k_isa(NICInfo
*nd
, qemu_irq
*pic
)
711 static int nb_ne2k
= 0;
713 if (nb_ne2k
== NE2000_NB_MAX
)
715 isa_ne2000_init(ne2000_io
[nb_ne2k
], pic
[ne2000_irq
[nb_ne2k
]], nd
);
719 /* PC hardware initialisation */
720 static void pc_init1(ram_addr_t ram_size
, int vga_ram_size
,
721 const char *boot_device
, DisplayState
*ds
,
722 const char *kernel_filename
, const char *kernel_cmdline
,
723 const char *initrd_filename
,
724 int pci_enabled
, const char *cpu_model
)
727 int ret
, linux_boot
, i
;
728 ram_addr_t ram_addr
, vga_ram_addr
, bios_offset
, vga_bios_offset
;
729 ram_addr_t below_4g_mem_size
, above_4g_mem_size
= 0;
730 int bios_size
, isa_bios_size
, vga_bios_size
;
732 int piix3_devfn
= -1;
738 BlockDriverState
*hd
[MAX_IDE_BUS
* MAX_IDE_DEVS
];
739 BlockDriverState
*fd
[MAX_FD
];
741 if (ram_size
>= 0xe0000000 ) {
742 above_4g_mem_size
= ram_size
- 0xe0000000;
743 below_4g_mem_size
= 0xe0000000;
745 below_4g_mem_size
= ram_size
;
748 linux_boot
= (kernel_filename
!= NULL
);
751 if (cpu_model
== NULL
) {
753 cpu_model
= "qemu64";
755 cpu_model
= "qemu32";
759 for(i
= 0; i
< smp_cpus
; i
++) {
760 env
= cpu_init(cpu_model
);
762 fprintf(stderr
, "Unable to find x86 CPU definition\n");
768 /* XXX: enable it in all cases */
769 env
->cpuid_features
|= CPUID_APIC
;
771 qemu_register_reset(main_cpu_reset
, env
);
780 ram_addr
= qemu_ram_alloc(ram_size
);
781 cpu_register_physical_memory(0, below_4g_mem_size
, ram_addr
);
783 /* above 4giga memory allocation */
784 if (above_4g_mem_size
> 0) {
785 cpu_register_physical_memory((target_phys_addr_t
) 0x100000000ULL
,
787 ram_addr
+ below_4g_mem_size
);
790 /* allocate VGA RAM */
791 vga_ram_addr
= qemu_ram_alloc(vga_ram_size
);
794 if (bios_name
== NULL
)
795 bios_name
= BIOS_FILENAME
;
796 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, bios_name
);
797 bios_size
= get_image_size(buf
);
798 if (bios_size
<= 0 ||
799 (bios_size
% 65536) != 0) {
802 bios_offset
= qemu_ram_alloc(bios_size
);
803 ret
= load_image(buf
, phys_ram_base
+ bios_offset
);
804 if (ret
!= bios_size
) {
806 fprintf(stderr
, "qemu: could not load PC BIOS '%s'\n", buf
);
811 if (cirrus_vga_enabled
) {
812 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, VGABIOS_CIRRUS_FILENAME
);
814 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, VGABIOS_FILENAME
);
816 vga_bios_size
= get_image_size(buf
);
817 if (vga_bios_size
<= 0 || vga_bios_size
> 65536)
819 vga_bios_offset
= qemu_ram_alloc(65536);
821 ret
= load_image(buf
, phys_ram_base
+ vga_bios_offset
);
822 if (ret
!= vga_bios_size
) {
824 fprintf(stderr
, "qemu: could not load VGA BIOS '%s'\n", buf
);
828 /* setup basic memory access */
829 cpu_register_physical_memory(0xc0000, 0x10000,
830 vga_bios_offset
| IO_MEM_ROM
);
832 /* map the last 128KB of the BIOS in ISA space */
833 isa_bios_size
= bios_size
;
834 if (isa_bios_size
> (128 * 1024))
835 isa_bios_size
= 128 * 1024;
836 cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size
,
838 cpu_register_physical_memory(0x100000 - isa_bios_size
,
840 (bios_offset
+ bios_size
- isa_bios_size
) | IO_MEM_ROM
);
843 ram_addr_t option_rom_offset
;
847 for (i
= 0; i
< nb_option_roms
; i
++) {
848 size
= get_image_size(option_rom
[i
]);
850 fprintf(stderr
, "Could not load option rom '%s'\n",
854 if (size
> (0x10000 - offset
))
855 goto option_rom_error
;
856 option_rom_offset
= qemu_ram_alloc(size
);
857 ret
= load_image(option_rom
[i
], phys_ram_base
+ option_rom_offset
);
860 fprintf(stderr
, "Too many option ROMS\n");
863 size
= (size
+ 4095) & ~4095;
864 cpu_register_physical_memory(0xd0000 + offset
,
865 size
, option_rom_offset
| IO_MEM_ROM
);
870 /* map all the bios at the top of memory */
871 cpu_register_physical_memory((uint32_t)(-bios_size
),
872 bios_size
, bios_offset
| IO_MEM_ROM
);
877 load_linux(kernel_filename
, initrd_filename
, kernel_cmdline
);
879 cpu_irq
= qemu_allocate_irqs(pic_irq_request
, NULL
, 1);
880 i8259
= i8259_init(cpu_irq
[0]);
881 ferr_irq
= i8259
[13];
884 pci_bus
= i440fx_init(&i440fx_state
, i8259
);
885 piix3_devfn
= piix3_init(pci_bus
, -1);
890 /* init basic PC hardware */
891 register_ioport_write(0x80, 1, 1, ioport80_write
, NULL
);
893 register_ioport_write(0xf0, 1, 1, ioportF0_write
, NULL
);
895 if (cirrus_vga_enabled
) {
897 pci_cirrus_vga_init(pci_bus
,
898 ds
, phys_ram_base
+ vga_ram_addr
,
899 vga_ram_addr
, vga_ram_size
);
901 isa_cirrus_vga_init(ds
, phys_ram_base
+ vga_ram_addr
,
902 vga_ram_addr
, vga_ram_size
);
904 } else if (vmsvga_enabled
) {
906 pci_vmsvga_init(pci_bus
, ds
, phys_ram_base
+ vga_ram_addr
,
907 vga_ram_addr
, vga_ram_size
);
909 fprintf(stderr
, "%s: vmware_vga: no PCI bus\n", __FUNCTION__
);
912 pci_vga_init(pci_bus
, ds
, phys_ram_base
+ vga_ram_addr
,
913 vga_ram_addr
, vga_ram_size
, 0, 0);
915 isa_vga_init(ds
, phys_ram_base
+ vga_ram_addr
,
916 vga_ram_addr
, vga_ram_size
);
920 rtc_state
= rtc_init(0x70, i8259
[8]);
922 qemu_register_boot_set(pc_boot_set
, rtc_state
);
924 register_ioport_read(0x92, 1, 1, ioport92_read
, NULL
);
925 register_ioport_write(0x92, 1, 1, ioport92_write
, NULL
);
928 ioapic
= ioapic_init();
930 pit
= pit_init(0x40, i8259
[0]);
933 pic_set_alt_irq_func(isa_pic
, ioapic_set_irq
, ioapic
);
936 for(i
= 0; i
< MAX_SERIAL_PORTS
; i
++) {
938 serial_init(serial_io
[i
], i8259
[serial_irq
[i
]], 115200,
943 for(i
= 0; i
< MAX_PARALLEL_PORTS
; i
++) {
944 if (parallel_hds
[i
]) {
945 parallel_init(parallel_io
[i
], i8259
[parallel_irq
[i
]],
950 for(i
= 0; i
< nb_nics
; i
++) {
954 nd
->model
= "ne2k_pci";
956 nd
->model
= "ne2k_isa";
959 if (strcmp(nd
->model
, "ne2k_isa") == 0) {
960 pc_init_ne2k_isa(nd
, i8259
);
961 } else if (pci_enabled
) {
962 if (strcmp(nd
->model
, "?") == 0)
963 fprintf(stderr
, "qemu: Supported ISA NICs: ne2k_isa\n");
964 pci_nic_init(pci_bus
, nd
, -1);
965 } else if (strcmp(nd
->model
, "?") == 0) {
966 fprintf(stderr
, "qemu: Supported ISA NICs: ne2k_isa\n");
969 fprintf(stderr
, "qemu: Unsupported NIC: %s\n", nd
->model
);
974 if (drive_get_max_bus(IF_IDE
) >= MAX_IDE_BUS
) {
975 fprintf(stderr
, "qemu: too many IDE bus\n");
979 for(i
= 0; i
< MAX_IDE_BUS
* MAX_IDE_DEVS
; i
++) {
980 index
= drive_get_index(IF_IDE
, i
/ MAX_IDE_DEVS
, i
% MAX_IDE_DEVS
);
982 hd
[i
] = drives_table
[index
].bdrv
;
988 pci_piix3_ide_init(pci_bus
, hd
, piix3_devfn
+ 1, i8259
);
990 for(i
= 0; i
< MAX_IDE_BUS
; i
++) {
991 isa_ide_init(ide_iobase
[i
], ide_iobase2
[i
], i8259
[ide_irq
[i
]],
992 hd
[MAX_IDE_DEVS
* i
], hd
[MAX_IDE_DEVS
* i
+ 1]);
996 i8042_init(i8259
[1], i8259
[12], 0x60);
999 audio_init(pci_enabled
? pci_bus
: NULL
, i8259
);
1002 for(i
= 0; i
< MAX_FD
; i
++) {
1003 index
= drive_get_index(IF_FLOPPY
, 0, i
);
1005 fd
[i
] = drives_table
[index
].bdrv
;
1009 floppy_controller
= fdctrl_init(i8259
[6], 2, 0, 0x3f0, fd
);
1011 cmos_init(below_4g_mem_size
, above_4g_mem_size
, boot_device
, hd
);
1013 if (pci_enabled
&& usb_enabled
) {
1014 usb_uhci_piix3_init(pci_bus
, piix3_devfn
+ 2);
1017 if (pci_enabled
&& acpi_enabled
) {
1018 uint8_t *eeprom_buf
= qemu_mallocz(8 * 256); /* XXX: make this persistent */
1021 /* TODO: Populate SPD eeprom data. */
1022 smbus
= piix4_pm_init(pci_bus
, piix3_devfn
+ 3, 0xb100, i8259
[9]);
1023 for (i
= 0; i
< 8; i
++) {
1024 smbus_eeprom_device_init(smbus
, 0x50 + i
, eeprom_buf
+ (i
* 256));
1029 i440fx_init_memory_mappings(i440fx_state
);
1037 max_bus
= drive_get_max_bus(IF_SCSI
);
1039 for (bus
= 0; bus
<= max_bus
; bus
++) {
1040 scsi
= lsi_scsi_init(pci_bus
, -1);
1041 for (unit
= 0; unit
< LSI_MAX_DEVS
; unit
++) {
1042 index
= drive_get_index(IF_SCSI
, bus
, unit
);
1045 lsi_scsi_attach(scsi
, drives_table
[index
].bdrv
, unit
);
1051 static void pc_init_pci(ram_addr_t ram_size
, int vga_ram_size
,
1052 const char *boot_device
, DisplayState
*ds
,
1053 const char *kernel_filename
,
1054 const char *kernel_cmdline
,
1055 const char *initrd_filename
,
1056 const char *cpu_model
)
1058 pc_init1(ram_size
, vga_ram_size
, boot_device
, ds
,
1059 kernel_filename
, kernel_cmdline
,
1060 initrd_filename
, 1, cpu_model
);
1063 static void pc_init_isa(ram_addr_t ram_size
, int vga_ram_size
,
1064 const char *boot_device
, DisplayState
*ds
,
1065 const char *kernel_filename
,
1066 const char *kernel_cmdline
,
1067 const char *initrd_filename
,
1068 const char *cpu_model
)
1070 pc_init1(ram_size
, vga_ram_size
, boot_device
, ds
,
1071 kernel_filename
, kernel_cmdline
,
1072 initrd_filename
, 0, cpu_model
);
1075 QEMUMachine pc_machine
= {
1077 .desc
= "Standard PC",
1078 .init
= pc_init_pci
,
1079 .ram_require
= VGA_RAM_SIZE
+ PC_MAX_BIOS_SIZE
,
1082 QEMUMachine isapc_machine
= {
1084 .desc
= "ISA-only PC",
1085 .init
= pc_init_isa
,
1086 .ram_require
= VGA_RAM_SIZE
+ PC_MAX_BIOS_SIZE
,