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 "hpet_emul.h"
39 #include "device-assignment.h"
43 /* output Bochs bios info messages */
46 #define BIOS_FILENAME "bios.bin"
47 #define VGABIOS_FILENAME "vgabios.bin"
48 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
49 #define EXTBOOT_FILENAME "extboot.bin"
51 #define PC_MAX_BIOS_SIZE (4 * 1024 * 1024)
53 /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
54 #define ACPI_DATA_SIZE 0x10000
55 #define BIOS_CFG_IOPORT 0x510
56 #define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0)
57 #define FW_CFG_SMBIOS_ENTRIES (FW_CFG_ARCH_LOCAL + 1)
61 static fdctrl_t
*floppy_controller
;
62 static RTCState
*rtc_state
;
64 static IOAPICState
*ioapic
;
65 static PCIDevice
*i440fx_state
;
67 typedef struct rom_reset_data
{
69 target_phys_addr_t addr
;
73 static void option_rom_reset(void *_rrd
)
75 RomResetData
*rrd
= _rrd
;
77 cpu_physical_memory_write_rom(rrd
->addr
, rrd
->data
, rrd
->size
);
80 static void option_rom_setup_reset(target_phys_addr_t addr
, unsigned size
)
82 RomResetData
*rrd
= qemu_malloc(sizeof *rrd
);
84 rrd
->data
= qemu_malloc(size
);
85 cpu_physical_memory_read(addr
, rrd
->data
, size
);
88 qemu_register_reset(option_rom_reset
, 0, rrd
);
91 static void ioport80_write(void *opaque
, uint32_t addr
, uint32_t data
)
95 /* MSDOS compatibility mode FPU exception support */
96 static qemu_irq ferr_irq
;
97 /* XXX: add IGNNE support */
98 void cpu_set_ferr(CPUX86State
*s
)
100 qemu_irq_raise(ferr_irq
);
103 static void ioportF0_write(void *opaque
, uint32_t addr
, uint32_t data
)
105 qemu_irq_lower(ferr_irq
);
109 uint64_t cpu_get_tsc(CPUX86State
*env
)
111 /* Note: when using kqemu, it is more logical to return the host TSC
112 because kqemu does not trap the RDTSC instruction for
113 performance reasons */
115 if (env
->kqemu_enabled
) {
116 return cpu_get_real_ticks();
120 return cpu_get_ticks();
125 void cpu_smm_update(CPUState
*env
)
127 if (i440fx_state
&& env
== first_cpu
)
128 i440fx_set_smm(i440fx_state
, (env
->hflags
>> HF_SMM_SHIFT
) & 1);
133 int cpu_get_pic_interrupt(CPUState
*env
)
137 intno
= apic_get_interrupt(env
);
139 /* set irq request if a PIC irq is still pending */
140 /* XXX: improve that */
141 pic_update_irq(isa_pic
);
144 /* read the irq from the PIC */
145 if (!apic_accept_pic_intr(env
))
148 intno
= pic_read_irq(isa_pic
);
152 static void pic_irq_request(void *opaque
, int irq
, int level
)
154 CPUState
*env
= first_cpu
;
156 if (env
->apic_state
) {
158 if (apic_accept_pic_intr(env
))
159 apic_deliver_pic_intr(env
, level
);
164 cpu_interrupt(env
, CPU_INTERRUPT_HARD
);
166 cpu_reset_interrupt(env
, CPU_INTERRUPT_HARD
);
170 /* PC cmos mappings */
172 #define REG_EQUIPMENT_BYTE 0x14
174 static int cmos_get_fd_drive_type(int fd0
)
180 /* 1.44 Mb 3"5 drive */
184 /* 2.88 Mb 3"5 drive */
188 /* 1.2 Mb 5"5 drive */
198 static void cmos_init_hd(int type_ofs
, int info_ofs
, BlockDriverState
*hd
)
200 RTCState
*s
= rtc_state
;
201 int cylinders
, heads
, sectors
;
202 bdrv_get_geometry_hint(hd
, &cylinders
, &heads
, §ors
);
203 rtc_set_memory(s
, type_ofs
, 47);
204 rtc_set_memory(s
, info_ofs
, cylinders
);
205 rtc_set_memory(s
, info_ofs
+ 1, cylinders
>> 8);
206 rtc_set_memory(s
, info_ofs
+ 2, heads
);
207 rtc_set_memory(s
, info_ofs
+ 3, 0xff);
208 rtc_set_memory(s
, info_ofs
+ 4, 0xff);
209 rtc_set_memory(s
, info_ofs
+ 5, 0xc0 | ((heads
> 8) << 3));
210 rtc_set_memory(s
, info_ofs
+ 6, cylinders
);
211 rtc_set_memory(s
, info_ofs
+ 7, cylinders
>> 8);
212 rtc_set_memory(s
, info_ofs
+ 8, sectors
);
215 /* convert boot_device letter to something recognizable by the bios */
216 static int boot_device2nibble(char boot_device
)
218 switch(boot_device
) {
221 return 0x01; /* floppy boot */
223 return 0x02; /* hard drive boot */
225 return 0x03; /* CD-ROM boot */
227 return 0x04; /* Network boot */
232 /* copy/pasted from cmos_init, should be made a general function
233 and used there as well */
234 static int pc_boot_set(void *opaque
, const char *boot_device
)
236 Monitor
*mon
= cur_mon
;
237 #define PC_MAX_BOOT_DEVICES 3
238 RTCState
*s
= (RTCState
*)opaque
;
239 int nbds
, bds
[3] = { 0, };
242 nbds
= strlen(boot_device
);
243 if (nbds
> PC_MAX_BOOT_DEVICES
) {
244 monitor_printf(mon
, "Too many boot devices for PC\n");
247 for (i
= 0; i
< nbds
; i
++) {
248 bds
[i
] = boot_device2nibble(boot_device
[i
]);
250 monitor_printf(mon
, "Invalid boot device for PC: '%c'\n",
255 rtc_set_memory(s
, 0x3d, (bds
[1] << 4) | bds
[0]);
256 rtc_set_memory(s
, 0x38, (bds
[2] << 4));
260 /* hd_table must contain 4 block drivers */
261 static void cmos_init(ram_addr_t ram_size
, ram_addr_t above_4g_mem_size
,
262 const char *boot_device
, BlockDriverState
**hd_table
)
264 RTCState
*s
= rtc_state
;
265 int nbds
, bds
[3] = { 0, };
270 /* various important CMOS locations needed by PC/Bochs bios */
273 val
= 640; /* base memory in K */
274 rtc_set_memory(s
, 0x15, val
);
275 rtc_set_memory(s
, 0x16, val
>> 8);
277 val
= (ram_size
/ 1024) - 1024;
280 rtc_set_memory(s
, 0x17, val
);
281 rtc_set_memory(s
, 0x18, val
>> 8);
282 rtc_set_memory(s
, 0x30, val
);
283 rtc_set_memory(s
, 0x31, val
>> 8);
285 if (above_4g_mem_size
) {
286 rtc_set_memory(s
, 0x5b, (unsigned int)above_4g_mem_size
>> 16);
287 rtc_set_memory(s
, 0x5c, (unsigned int)above_4g_mem_size
>> 24);
288 rtc_set_memory(s
, 0x5d, (uint64_t)above_4g_mem_size
>> 32);
291 if (ram_size
> (16 * 1024 * 1024))
292 val
= (ram_size
/ 65536) - ((16 * 1024 * 1024) / 65536);
297 rtc_set_memory(s
, 0x34, val
);
298 rtc_set_memory(s
, 0x35, val
>> 8);
300 /* set the number of CPU */
301 rtc_set_memory(s
, 0x5f, smp_cpus
- 1);
303 /* set boot devices, and disable floppy signature check if requested */
304 #define PC_MAX_BOOT_DEVICES 3
305 nbds
= strlen(boot_device
);
306 if (nbds
> PC_MAX_BOOT_DEVICES
) {
307 fprintf(stderr
, "Too many boot devices for PC\n");
310 for (i
= 0; i
< nbds
; i
++) {
311 bds
[i
] = boot_device2nibble(boot_device
[i
]);
313 fprintf(stderr
, "Invalid boot device for PC: '%c'\n",
318 rtc_set_memory(s
, 0x3d, (bds
[1] << 4) | bds
[0]);
319 rtc_set_memory(s
, 0x38, (bds
[2] << 4) | (fd_bootchk
? 0x0 : 0x1));
323 fd0
= fdctrl_get_drive_type(floppy_controller
, 0);
324 fd1
= fdctrl_get_drive_type(floppy_controller
, 1);
326 val
= (cmos_get_fd_drive_type(fd0
) << 4) | cmos_get_fd_drive_type(fd1
);
327 rtc_set_memory(s
, 0x10, val
);
339 val
|= 0x01; /* 1 drive, ready for boot */
342 val
|= 0x41; /* 2 drives, ready for boot */
345 val
|= 0x02; /* FPU is there */
346 val
|= 0x04; /* PS/2 mouse installed */
347 rtc_set_memory(s
, REG_EQUIPMENT_BYTE
, val
);
351 rtc_set_memory(s
, 0x12, (hd_table
[0] ? 0xf0 : 0) | (hd_table
[1] ? 0x0f : 0));
353 cmos_init_hd(0x19, 0x1b, hd_table
[0]);
355 cmos_init_hd(0x1a, 0x24, hd_table
[1]);
358 for (i
= 0; i
< 4; i
++) {
360 int cylinders
, heads
, sectors
, translation
;
361 /* NOTE: bdrv_get_geometry_hint() returns the physical
362 geometry. It is always such that: 1 <= sects <= 63, 1
363 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
364 geometry can be different if a translation is done. */
365 translation
= bdrv_get_translation_hint(hd_table
[i
]);
366 if (translation
== BIOS_ATA_TRANSLATION_AUTO
) {
367 bdrv_get_geometry_hint(hd_table
[i
], &cylinders
, &heads
, §ors
);
368 if (cylinders
<= 1024 && heads
<= 16 && sectors
<= 63) {
369 /* No translation. */
372 /* LBA translation. */
378 val
|= translation
<< (i
* 2);
381 rtc_set_memory(s
, 0x39, val
);
384 void ioport_set_a20(int enable
)
386 /* XXX: send to all CPUs ? */
387 cpu_x86_set_a20(first_cpu
, enable
);
390 int ioport_get_a20(void)
392 return ((first_cpu
->a20_mask
>> 20) & 1);
395 static void ioport92_write(void *opaque
, uint32_t addr
, uint32_t val
)
397 ioport_set_a20((val
>> 1) & 1);
398 /* XXX: bit 0 is fast reset */
401 static uint32_t ioport92_read(void *opaque
, uint32_t addr
)
403 return ioport_get_a20() << 1;
406 /***********************************************************/
407 /* Bochs BIOS debug ports */
409 static void bochs_bios_write(void *opaque
, uint32_t addr
, uint32_t val
)
411 static const char shutdown_str
[8] = "Shutdown";
412 static int shutdown_index
= 0;
415 /* Bochs BIOS messages */
418 fprintf(stderr
, "BIOS panic at rombios.c, line %d\n", val
);
423 fprintf(stderr
, "%c", val
);
427 /* same as Bochs power off */
428 if (val
== shutdown_str
[shutdown_index
]) {
430 if (shutdown_index
== 8) {
432 qemu_system_shutdown_request();
439 /* LGPL'ed VGA BIOS messages */
442 fprintf(stderr
, "VGA BIOS panic, line %d\n", val
);
447 fprintf(stderr
, "%c", val
);
453 extern uint64_t node_cpumask
[MAX_NODES
];
455 static void bochs_bios_init(void)
458 uint8_t *smbios_table
;
460 uint64_t *numa_fw_cfg
;
463 register_ioport_write(0x400, 1, 2, bochs_bios_write
, NULL
);
464 register_ioport_write(0x401, 1, 2, bochs_bios_write
, NULL
);
465 register_ioport_write(0x402, 1, 1, bochs_bios_write
, NULL
);
466 register_ioport_write(0x403, 1, 1, bochs_bios_write
, NULL
);
467 register_ioport_write(0x8900, 1, 1, bochs_bios_write
, NULL
);
469 register_ioport_write(0x501, 1, 2, bochs_bios_write
, NULL
);
470 register_ioport_write(0x502, 1, 2, bochs_bios_write
, NULL
);
471 register_ioport_write(0x500, 1, 1, bochs_bios_write
, NULL
);
472 register_ioport_write(0x503, 1, 1, bochs_bios_write
, NULL
);
474 fw_cfg
= fw_cfg_init(BIOS_CFG_IOPORT
, BIOS_CFG_IOPORT
+ 1, 0, 0);
475 fw_cfg_add_i32(fw_cfg
, FW_CFG_ID
, 1);
476 fw_cfg_add_i64(fw_cfg
, FW_CFG_RAM_SIZE
, (uint64_t)ram_size
);
477 fw_cfg_add_bytes(fw_cfg
, FW_CFG_ACPI_TABLES
, (uint8_t *)acpi_tables
,
480 smbios_table
= smbios_get_table(&smbios_len
);
482 fw_cfg_add_bytes(fw_cfg
, FW_CFG_SMBIOS_ENTRIES
,
483 smbios_table
, smbios_len
);
485 /* allocate memory for the NUMA channel: one (64bit) word for the number
486 * of nodes, one word for each VCPU->node and one word for each node to
487 * hold the amount of memory.
489 numa_fw_cfg
= qemu_mallocz((1 + smp_cpus
+ nb_numa_nodes
) * 8);
490 numa_fw_cfg
[0] = cpu_to_le64(nb_numa_nodes
);
491 for (i
= 0; i
< smp_cpus
; i
++) {
492 for (j
= 0; j
< nb_numa_nodes
; j
++) {
493 if (node_cpumask
[j
] & (1 << i
)) {
494 numa_fw_cfg
[i
+ 1] = cpu_to_le64(j
);
499 for (i
= 0; i
< nb_numa_nodes
; i
++) {
500 numa_fw_cfg
[smp_cpus
+ 1 + i
] = cpu_to_le64(node_mem
[i
]);
502 fw_cfg_add_bytes(fw_cfg
, FW_CFG_NUMA
, (uint8_t *)numa_fw_cfg
,
503 (1 + smp_cpus
+ nb_numa_nodes
) * 8);
506 /* Generate an initial boot sector which sets state and jump to
507 a specified vector */
508 static void generate_bootsect(target_phys_addr_t option_rom
,
509 uint32_t gpr
[8], uint16_t segs
[6], uint16_t ip
)
511 uint8_t rom
[512], *p
, *reloc
;
515 memset(rom
, 0, sizeof(rom
));
518 /* Make sure we have an option rom signature */
522 /* ROM size in sectors*/
527 *p
++ = 0x50; /* push ax */
528 *p
++ = 0x1e; /* push ds */
529 *p
++ = 0x31; *p
++ = 0xc0; /* xor ax, ax */
530 *p
++ = 0x8e; *p
++ = 0xd8; /* mov ax, ds */
532 *p
++ = 0xc7; *p
++ = 0x06; /* movvw _start,0x64 */
533 *p
++ = 0x64; *p
++ = 0x00;
535 *p
++ = 0x00; *p
++ = 0x00;
537 *p
++ = 0x8c; *p
++ = 0x0e; /* mov cs,0x66 */
538 *p
++ = 0x66; *p
++ = 0x00;
540 *p
++ = 0x1f; /* pop ds */
541 *p
++ = 0x58; /* pop ax */
542 *p
++ = 0xcb; /* lret */
547 *p
++ = 0xfa; /* CLI */
548 *p
++ = 0xfc; /* CLD */
550 for (i
= 0; i
< 6; i
++) {
551 if (i
== 1) /* Skip CS */
554 *p
++ = 0xb8; /* MOV AX,imm16 */
557 *p
++ = 0x8e; /* MOV <seg>,AX */
558 *p
++ = 0xc0 + (i
<< 3);
561 for (i
= 0; i
< 8; i
++) {
562 *p
++ = 0x66; /* 32-bit operand size */
563 *p
++ = 0xb8 + i
; /* MOV <reg>,imm32 */
570 *p
++ = 0xea; /* JMP FAR */
573 *p
++ = segs
[1]; /* CS */
578 for (i
= 0; i
< (sizeof(rom
) - 1); i
++)
580 rom
[sizeof(rom
) - 1] = -sum
;
582 cpu_physical_memory_write_rom(option_rom
, rom
, sizeof(rom
));
583 option_rom_setup_reset(option_rom
, sizeof (rom
));
586 static long get_file_size(FILE *f
)
590 /* XXX: on Unix systems, using fstat() probably makes more sense */
593 fseek(f
, 0, SEEK_END
);
595 fseek(f
, where
, SEEK_SET
);
600 static void load_linux(target_phys_addr_t option_rom
,
601 const char *kernel_filename
,
602 const char *initrd_filename
,
603 const char *kernel_cmdline
,
604 target_phys_addr_t max_ram_size
)
610 int setup_size
, kernel_size
, initrd_size
, cmdline_size
;
612 uint8_t header
[1024];
613 target_phys_addr_t real_addr
, prot_addr
, cmdline_addr
, initrd_addr
;
616 /* Align to 16 bytes as a paranoia measure */
617 cmdline_size
= (strlen(kernel_cmdline
)+16) & ~15;
619 /* load the kernel header */
620 f
= fopen(kernel_filename
, "rb");
621 if (!f
|| !(kernel_size
= get_file_size(f
)) ||
622 fread(header
, 1, 1024, f
) != 1024) {
623 fprintf(stderr
, "qemu: could not load kernel '%s'\n",
628 /* kernel protocol version */
630 fprintf(stderr
, "header magic: %#x\n", ldl_p(header
+0x202));
632 if (ldl_p(header
+0x202) == 0x53726448)
633 protocol
= lduw_p(header
+0x206);
637 if (protocol
< 0x200 || !(header
[0x211] & 0x01)) {
640 cmdline_addr
= 0x9a000 - cmdline_size
;
642 } else if (protocol
< 0x202) {
643 /* High but ancient kernel */
645 cmdline_addr
= 0x9a000 - cmdline_size
;
646 prot_addr
= 0x100000;
648 /* High and recent kernel */
650 cmdline_addr
= 0x20000;
651 prot_addr
= 0x100000;
656 "qemu: real_addr = 0x" TARGET_FMT_plx
"\n"
657 "qemu: cmdline_addr = 0x" TARGET_FMT_plx
"\n"
658 "qemu: prot_addr = 0x" TARGET_FMT_plx
"\n",
664 /* highest address for loading the initrd */
665 if (protocol
>= 0x203)
666 initrd_max
= ldl_p(header
+0x22c);
668 initrd_max
= 0x37ffffff;
670 if (initrd_max
>= max_ram_size
-ACPI_DATA_SIZE
)
671 initrd_max
= max_ram_size
-ACPI_DATA_SIZE
-1;
673 /* kernel command line */
674 pstrcpy_targphys(cmdline_addr
, 4096, kernel_cmdline
);
676 if (protocol
>= 0x202) {
677 stl_p(header
+0x228, cmdline_addr
);
679 stw_p(header
+0x20, 0xA33F);
680 stw_p(header
+0x22, cmdline_addr
-real_addr
);
684 /* High nybble = B reserved for Qemu; low nybble is revision number.
685 If this code is substantially changed, you may want to consider
686 incrementing the revision. */
687 if (protocol
>= 0x200)
688 header
[0x210] = 0xB0;
691 if (protocol
>= 0x201) {
692 header
[0x211] |= 0x80; /* CAN_USE_HEAP */
693 stw_p(header
+0x224, cmdline_addr
-real_addr
-0x200);
697 if (initrd_filename
) {
698 if (protocol
< 0x200) {
699 fprintf(stderr
, "qemu: linux kernel too old to load a ram disk\n");
703 fi
= fopen(initrd_filename
, "rb");
705 fprintf(stderr
, "qemu: could not load initial ram disk '%s'\n",
710 initrd_size
= get_file_size(fi
);
711 initrd_addr
= (initrd_max
-initrd_size
) & ~4095;
713 if (!fread_targphys_ok(initrd_addr
, initrd_size
, fi
)) {
714 fprintf(stderr
, "qemu: read error on initial ram disk '%s'\n",
720 stl_p(header
+0x218, initrd_addr
);
721 stl_p(header
+0x21c, initrd_size
);
724 /* store the finalized header and load the rest of the kernel */
725 cpu_physical_memory_write(real_addr
, header
, 1024);
727 setup_size
= header
[0x1f1];
731 setup_size
= (setup_size
+1)*512;
732 kernel_size
-= setup_size
; /* Size of protected-mode code */
734 if (!fread_targphys_ok(real_addr
+1024, setup_size
-1024, f
) ||
735 !fread_targphys_ok(prot_addr
, kernel_size
, f
)) {
736 fprintf(stderr
, "qemu: read error on kernel '%s'\n",
742 /* generate bootsector to set up the initial register state */
743 real_seg
= real_addr
>> 4;
744 seg
[0] = seg
[2] = seg
[3] = seg
[4] = seg
[4] = real_seg
;
745 seg
[1] = real_seg
+0x20; /* CS */
746 memset(gpr
, 0, sizeof gpr
);
747 gpr
[4] = cmdline_addr
-real_addr
-16; /* SP (-16 is paranoia) */
749 option_rom_setup_reset(real_addr
, setup_size
);
750 option_rom_setup_reset(prot_addr
, kernel_size
);
751 option_rom_setup_reset(cmdline_addr
, cmdline_size
);
753 option_rom_setup_reset(initrd_addr
, initrd_size
);
755 generate_bootsect(option_rom
, gpr
, seg
, 0);
758 static void main_cpu_reset(void *opaque
)
760 CPUState
*env
= opaque
;
764 static const int ide_iobase
[2] = { 0x1f0, 0x170 };
765 static const int ide_iobase2
[2] = { 0x3f6, 0x376 };
766 static const int ide_irq
[2] = { 14, 15 };
768 #define NE2000_NB_MAX 6
770 static int ne2000_io
[NE2000_NB_MAX
] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
771 static int ne2000_irq
[NE2000_NB_MAX
] = { 9, 10, 11, 3, 4, 5 };
773 static int serial_io
[MAX_SERIAL_PORTS
] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
774 static int serial_irq
[MAX_SERIAL_PORTS
] = { 4, 3, 4, 3 };
776 static int parallel_io
[MAX_PARALLEL_PORTS
] = { 0x378, 0x278, 0x3bc };
777 static int parallel_irq
[MAX_PARALLEL_PORTS
] = { 7, 7, 7 };
780 static void audio_init (PCIBus
*pci_bus
, qemu_irq
*pic
)
784 for (c
= soundhw
; c
->name
; ++c
) {
787 c
->init
.init_isa(pic
);
790 c
->init
.init_pci(pci_bus
);
798 static void pc_init_ne2k_isa(NICInfo
*nd
, qemu_irq
*pic
)
800 static int nb_ne2k
= 0;
802 if (nb_ne2k
== NE2000_NB_MAX
)
804 isa_ne2000_init(ne2000_io
[nb_ne2k
], pic
[ne2000_irq
[nb_ne2k
]], nd
);
808 static int load_option_rom(const char *oprom
, target_phys_addr_t start
,
809 target_phys_addr_t end
)
813 size
= get_image_size(oprom
);
814 if (size
> 0 && start
+ size
> end
) {
815 fprintf(stderr
, "Not enough space to load option rom '%s'\n",
819 size
= load_image_targphys(oprom
, start
, end
- start
);
821 fprintf(stderr
, "Could not load option rom '%s'\n", oprom
);
824 /* Round up optiom rom size to the next 2k boundary */
825 size
= (size
+ 2047) & ~2047;
826 option_rom_setup_reset(start
, size
);
830 CPUState
*pc_new_cpu(int cpu
, const char *cpu_model
, int pci_enabled
)
832 CPUState
*env
= cpu_init(cpu_model
);
834 fprintf(stderr
, "Unable to find x86 CPU definition\n");
840 /* XXX: enable it in all cases */
841 env
->cpuid_features
|= CPUID_APIC
;
843 qemu_register_reset(main_cpu_reset
, 0, env
);
848 /* kvm needs this to run after the apic is initialized. Otherwise,
849 * it can access invalid state and crash.
855 /* PC hardware initialisation */
856 static void pc_init1(ram_addr_t ram_size
,
857 const char *boot_device
,
858 const char *kernel_filename
, const char *kernel_cmdline
,
859 const char *initrd_filename
,
860 int pci_enabled
, const char *cpu_model
)
863 int ret
, linux_boot
, i
;
864 ram_addr_t ram_addr
, bios_offset
, option_rom_offset
;
865 ram_addr_t below_4g_mem_size
, above_4g_mem_size
= 0;
866 int bios_size
, isa_bios_size
, oprom_area_size
;
867 int pci_option_rom_offset
= 0;
869 int piix3_devfn
= -1;
874 BlockDriverState
*hd
[MAX_IDE_BUS
* MAX_IDE_DEVS
];
875 BlockDriverState
*fd
[MAX_FD
];
876 int using_vga
= cirrus_vga_enabled
|| std_vga_enabled
|| vmsvga_enabled
;
878 if (ram_size
>= 0xe0000000 ) {
879 above_4g_mem_size
= ram_size
- 0xe0000000;
880 below_4g_mem_size
= 0xe0000000;
882 below_4g_mem_size
= ram_size
;
885 linux_boot
= (kernel_filename
!= NULL
);
888 if (cpu_model
== NULL
) {
890 cpu_model
= "qemu64";
892 cpu_model
= "qemu32";
896 for(i
= 0; i
< smp_cpus
; i
++) {
897 env
= pc_new_cpu(i
, cpu_model
, pci_enabled
);
903 ram_addr
= qemu_ram_alloc(below_4g_mem_size
);
904 cpu_register_physical_memory(0, 0xa0000, ram_addr
);
905 cpu_register_physical_memory(0x100000,
906 below_4g_mem_size
- 0x100000,
907 ram_addr
+ 0x100000);
909 /* above 4giga memory allocation */
910 if (above_4g_mem_size
> 0) {
911 #if TARGET_PHYS_ADDR_BITS == 32
912 hw_error("To much RAM for 32-bit physical address");
914 ram_addr
= qemu_ram_alloc(above_4g_mem_size
);
915 cpu_register_physical_memory(0x100000000ULL
,
923 if (bios_name
== NULL
)
924 bios_name
= BIOS_FILENAME
;
925 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, bios_name
);
926 bios_size
= get_image_size(buf
);
927 if (bios_size
<= 0 ||
928 (bios_size
% 65536) != 0) {
931 bios_offset
= qemu_ram_alloc(bios_size
);
932 ret
= load_image(buf
, qemu_get_ram_ptr(bios_offset
));
933 if (ret
!= bios_size
) {
935 fprintf(stderr
, "qemu: could not load PC BIOS '%s'\n", buf
);
938 /* map the last 128KB of the BIOS in ISA space */
939 isa_bios_size
= bios_size
;
940 if (isa_bios_size
> (128 * 1024))
941 isa_bios_size
= 128 * 1024;
942 cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size
,
944 /* kvm tpr optimization needs the bios accessible for write, at least to qemu itself */
945 cpu_register_physical_memory(0x100000 - isa_bios_size
,
947 (bios_offset
+ bios_size
- isa_bios_size
) /* | IO_MEM_ROM */);
949 if (extboot_drive
!= -1) {
950 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, EXTBOOT_FILENAME
);
951 option_rom
[nb_option_roms
++] = strdup(buf
);
954 option_rom_offset
= qemu_ram_alloc(0x20000);
956 cpu_register_physical_memory(0xc0000, 0x20000, option_rom_offset
);
960 if (cirrus_vga_enabled
) {
961 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
,
962 VGABIOS_CIRRUS_FILENAME
);
964 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, VGABIOS_FILENAME
);
966 oprom_area_size
= load_option_rom(buf
, 0xc0000, 0xe0000);
967 pci_option_rom_offset
= oprom_area_size
;
969 /* Although video roms can grow larger than 0x8000, the area between
970 * 0xc0000 - 0xc8000 is reserved for them. It means we won't be looking
971 * for any other kind of option rom inside this area */
972 if (oprom_area_size
< 0x8000)
973 oprom_area_size
= 0x8000;
976 load_linux(0xc0000 + oprom_area_size
,
977 kernel_filename
, initrd_filename
, kernel_cmdline
, below_4g_mem_size
);
978 oprom_area_size
+= 2048;
981 for (i
= 0; i
< nb_option_roms
; i
++) {
982 oprom_area_size
+= load_option_rom(option_rom
[i
],
983 0xc0000 + oprom_area_size
, 0xe0000);
986 /* map all the bios at the top of memory */
987 cpu_register_physical_memory((uint32_t)(-bios_size
),
988 bios_size
, bios_offset
| IO_MEM_ROM
);
992 cpu_irq
= qemu_allocate_irqs(pic_irq_request
, NULL
, 1);
993 #ifdef KVM_CAP_IRQCHIP
994 if (kvm_enabled() && qemu_kvm_irqchip_in_kernel()) {
995 i8259
= kvm_i8259_init(cpu_irq
[0]);
998 i8259
= i8259_init(cpu_irq
[0]);
999 ferr_irq
= i8259
[13];
1002 pci_bus
= i440fx_init(&i440fx_state
, i8259
);
1003 piix3_devfn
= piix3_init(pci_bus
, -1);
1008 /* init basic PC hardware */
1009 register_ioport_write(0x80, 1, 1, ioport80_write
, NULL
);
1011 register_ioport_write(0xf0, 1, 1, ioportF0_write
, NULL
);
1013 if (cirrus_vga_enabled
) {
1015 pci_cirrus_vga_init(pci_bus
);
1017 isa_cirrus_vga_init();
1019 } else if (vmsvga_enabled
) {
1021 pci_vmsvga_init(pci_bus
);
1023 fprintf(stderr
, "%s: vmware_vga: no PCI bus\n", __FUNCTION__
);
1024 } else if (std_vga_enabled
) {
1026 pci_vga_init(pci_bus
, 0, 0);
1032 rtc_state
= rtc_init(0x70, i8259
[8], 2000);
1034 qemu_register_boot_set(pc_boot_set
, rtc_state
);
1036 register_ioport_read(0x92, 1, 1, ioport92_read
, NULL
);
1037 register_ioport_write(0x92, 1, 1, ioport92_write
, NULL
);
1040 ioapic
= ioapic_init();
1043 if (kvm_enabled() && qemu_kvm_pit_in_kernel())
1044 pit
= kvm_pit_init(0x40, i8259
[0]);
1047 pit
= pit_init(0x40, i8259
[0]);
1053 pic_set_alt_irq_func(isa_pic
, ioapic_set_irq
, ioapic
);
1056 for(i
= 0; i
< MAX_SERIAL_PORTS
; i
++) {
1057 if (serial_hds
[i
]) {
1058 serial_init(serial_io
[i
], i8259
[serial_irq
[i
]], 115200,
1063 for(i
= 0; i
< MAX_PARALLEL_PORTS
; i
++) {
1064 if (parallel_hds
[i
]) {
1065 parallel_init(parallel_io
[i
], i8259
[parallel_irq
[i
]],
1070 watchdog_pc_init(pci_bus
);
1072 for(i
= 0; i
< nb_nics
; i
++) {
1073 NICInfo
*nd
= &nd_table
[i
];
1075 if (!pci_enabled
|| (nd
->model
&& strcmp(nd
->model
, "ne2k_isa") == 0))
1076 pc_init_ne2k_isa(nd
, i8259
);
1078 pci_nic_init(pci_bus
, nd
, -1, "rtl8139");
1081 qemu_system_hot_add_init(cpu_model
);
1083 if (drive_get_max_bus(IF_IDE
) >= MAX_IDE_BUS
) {
1084 fprintf(stderr
, "qemu: too many IDE bus\n");
1088 for(i
= 0; i
< MAX_IDE_BUS
* MAX_IDE_DEVS
; i
++) {
1089 index
= drive_get_index(IF_IDE
, i
/ MAX_IDE_DEVS
, i
% MAX_IDE_DEVS
);
1091 hd
[i
] = drives_table
[index
].bdrv
;
1097 pci_piix3_ide_init(pci_bus
, hd
, piix3_devfn
+ 1, i8259
);
1099 for(i
= 0; i
< MAX_IDE_BUS
; i
++) {
1100 isa_ide_init(ide_iobase
[i
], ide_iobase2
[i
], i8259
[ide_irq
[i
]],
1101 hd
[MAX_IDE_DEVS
* i
], hd
[MAX_IDE_DEVS
* i
+ 1]);
1105 i8042_init(i8259
[1], i8259
[12], 0x60);
1108 audio_init(pci_enabled
? pci_bus
: NULL
, i8259
);
1111 for(i
= 0; i
< MAX_FD
; i
++) {
1112 index
= drive_get_index(IF_FLOPPY
, 0, i
);
1114 fd
[i
] = drives_table
[index
].bdrv
;
1118 floppy_controller
= fdctrl_init(i8259
[6], 2, 0, 0x3f0, fd
);
1120 cmos_init(below_4g_mem_size
, above_4g_mem_size
, boot_device
, hd
);
1122 if (pci_enabled
&& usb_enabled
) {
1123 usb_uhci_piix3_init(pci_bus
, piix3_devfn
+ 2);
1126 if (pci_enabled
&& acpi_enabled
) {
1127 uint8_t *eeprom_buf
= qemu_mallocz(8 * 256); /* XXX: make this persistent */
1130 /* TODO: Populate SPD eeprom data. */
1131 smbus
= piix4_pm_init(pci_bus
, piix3_devfn
+ 3, 0xb100, i8259
[9]);
1132 for (i
= 0; i
< 8; i
++) {
1133 DeviceState
*eeprom
;
1134 eeprom
= qdev_create((BusState
*)smbus
, "smbus-eeprom");
1135 qdev_set_prop_int(eeprom
, "address", 0x50 + i
);
1136 qdev_set_prop_ptr(eeprom
, "data", eeprom_buf
+ (i
* 256));
1142 i440fx_init_memory_mappings(i440fx_state
);
1149 max_bus
= drive_get_max_bus(IF_SCSI
);
1150 for (bus
= 0; bus
<= max_bus
; bus
++) {
1151 pci_create_simple(pci_bus
, -1, "lsi53c895a");
1155 /* Add virtio block devices */
1160 while ((index
= drive_get_index(IF_VIRTIO
, 0, unit_id
)) != -1) {
1161 pci_create_simple(pci_bus
, -1, "virtio-blk-pci");
1166 if (extboot_drive
!= -1) {
1167 DriveInfo
*info
= &drives_table
[extboot_drive
];
1168 int cyls
, heads
, secs
;
1170 if (info
->type
!= IF_IDE
&& info
->type
!= IF_VIRTIO
) {
1171 bdrv_guess_geometry(info
->bdrv
, &cyls
, &heads
, &secs
);
1172 bdrv_set_geometry_hint(info
->bdrv
, cyls
, heads
, secs
);
1175 extboot_init(info
->bdrv
, 1);
1178 /* Add virtio balloon device */
1180 pci_create_simple(pci_bus
, -1, "virtio-balloon-pci");
1183 /* Add virtio console devices */
1185 for(i
= 0; i
< MAX_VIRTIO_CONSOLES
; i
++) {
1186 if (virtcon_hds
[i
]) {
1187 pci_create_simple(pci_bus
, -1, "virtio-console-pci");
1192 #ifdef USE_KVM_DEVICE_ASSIGNMENT
1193 if (kvm_enabled()) {
1194 add_assigned_devices(pci_bus
, assigned_devices
, assigned_devices_index
);
1195 assigned_dev_load_option_roms(pci_option_rom_offset
);
1197 #endif /* USE_KVM_DEVICE_ASSIGNMENT */
1200 static void pc_init_pci(ram_addr_t ram_size
,
1201 const char *boot_device
,
1202 const char *kernel_filename
,
1203 const char *kernel_cmdline
,
1204 const char *initrd_filename
,
1205 const char *cpu_model
)
1207 pc_init1(ram_size
, boot_device
,
1208 kernel_filename
, kernel_cmdline
,
1209 initrd_filename
, 1, cpu_model
);
1212 static void pc_init_isa(ram_addr_t ram_size
,
1213 const char *boot_device
,
1214 const char *kernel_filename
,
1215 const char *kernel_cmdline
,
1216 const char *initrd_filename
,
1217 const char *cpu_model
)
1219 pc_init1(ram_size
, boot_device
,
1220 kernel_filename
, kernel_cmdline
,
1221 initrd_filename
, 0, cpu_model
);
1224 /* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
1225 BIOS will read it and start S3 resume at POST Entry */
1226 void cmos_set_s3_resume(void)
1229 rtc_set_memory(rtc_state
, 0xF, 0xFE);
1232 static QEMUMachine pc_machine
= {
1234 .desc
= "Standard PC",
1235 .init
= pc_init_pci
,
1240 static QEMUMachine isapc_machine
= {
1242 .desc
= "ISA-only PC",
1243 .init
= pc_init_isa
,
1247 static void pc_machine_init(void)
1249 qemu_register_machine(&pc_machine
);
1250 qemu_register_machine(&isapc_machine
);
1253 machine_init(pc_machine_init
);