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"
40 /* output Bochs bios info messages */
43 /* Show multiboot debug output */
44 //#define DEBUG_MULTIBOOT
46 #define BIOS_FILENAME "bios.bin"
47 #define VGABIOS_FILENAME "vgabios.bin"
48 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
50 #define PC_MAX_BIOS_SIZE (4 * 1024 * 1024)
52 /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
53 #define ACPI_DATA_SIZE 0x10000
54 #define BIOS_CFG_IOPORT 0x510
55 #define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0)
56 #define FW_CFG_SMBIOS_ENTRIES (FW_CFG_ARCH_LOCAL + 1)
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, 0, 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 Monitor *mon = cur_mon;
236 #define PC_MAX_BOOT_DEVICES 3
237 RTCState *s = (RTCState *)opaque;
238 int nbds, bds[3] = { 0, };
241 nbds = strlen(boot_device);
242 if (nbds > PC_MAX_BOOT_DEVICES) {
243 monitor_printf(mon, "Too many boot devices for PC\n");
246 for (i = 0; i < nbds; i++) {
247 bds[i] = boot_device2nibble(boot_device[i]);
249 monitor_printf(mon, "Invalid boot device for PC: '%c'\n",
254 rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
255 rtc_set_memory(s, 0x38, (bds[2] << 4));
259 /* hd_table must contain 4 block drivers */
260 static void cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
261 const char *boot_device, BlockDriverState **hd_table)
263 RTCState *s = rtc_state;
264 int nbds, bds[3] = { 0, };
269 /* various important CMOS locations needed by PC/Bochs bios */
272 val = 640; /* base memory in K */
273 rtc_set_memory(s, 0x15, val);
274 rtc_set_memory(s, 0x16, val >> 8);
276 val = (ram_size / 1024) - 1024;
279 rtc_set_memory(s, 0x17, val);
280 rtc_set_memory(s, 0x18, val >> 8);
281 rtc_set_memory(s, 0x30, val);
282 rtc_set_memory(s, 0x31, val >> 8);
284 if (above_4g_mem_size) {
285 rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16);
286 rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24);
287 rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32);
290 if (ram_size > (16 * 1024 * 1024))
291 val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
296 rtc_set_memory(s, 0x34, val);
297 rtc_set_memory(s, 0x35, val >> 8);
299 /* set the number of CPU */
300 rtc_set_memory(s, 0x5f, smp_cpus - 1);
302 /* set boot devices, and disable floppy signature check if requested */
303 #define PC_MAX_BOOT_DEVICES 3
304 nbds = strlen(boot_device);
305 if (nbds > PC_MAX_BOOT_DEVICES) {
306 fprintf(stderr, "Too many boot devices for PC\n");
309 for (i = 0; i < nbds; i++) {
310 bds[i] = boot_device2nibble(boot_device[i]);
312 fprintf(stderr, "Invalid boot device for PC: '%c'\n",
317 rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
318 rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1));
322 fd0 = fdctrl_get_drive_type(floppy_controller, 0);
323 fd1 = fdctrl_get_drive_type(floppy_controller, 1);
325 val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
326 rtc_set_memory(s, 0x10, val);
338 val |= 0x01; /* 1 drive, ready for boot */
341 val |= 0x41; /* 2 drives, ready for boot */
344 val |= 0x02; /* FPU is there */
345 val |= 0x04; /* PS/2 mouse installed */
346 rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
350 rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
352 cmos_init_hd(0x19, 0x1b, hd_table[0]);
354 cmos_init_hd(0x1a, 0x24, hd_table[1]);
357 for (i = 0; i < 4; i++) {
359 int cylinders, heads, sectors, translation;
360 /* NOTE: bdrv_get_geometry_hint() returns the physical
361 geometry. It is always such that: 1 <= sects <= 63, 1
362 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
363 geometry can be different if a translation is done. */
364 translation = bdrv_get_translation_hint(hd_table[i]);
365 if (translation == BIOS_ATA_TRANSLATION_AUTO) {
366 bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, §ors);
367 if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
368 /* No translation. */
371 /* LBA translation. */
377 val |= translation << (i * 2);
380 rtc_set_memory(s, 0x39, val);
383 void ioport_set_a20(int enable)
385 /* XXX: send to all CPUs ? */
386 cpu_x86_set_a20(first_cpu, enable);
389 int ioport_get_a20(void)
391 return ((first_cpu->a20_mask >> 20) & 1);
394 static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
396 ioport_set_a20((val >> 1) & 1);
397 /* XXX: bit 0 is fast reset */
400 static uint32_t ioport92_read(void *opaque, uint32_t addr)
402 return ioport_get_a20() << 1;
405 /***********************************************************/
406 /* Bochs BIOS debug ports */
408 static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
410 static const char shutdown_str[8] = "Shutdown";
411 static int shutdown_index = 0;
414 /* Bochs BIOS messages */
417 fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
422 fprintf(stderr, "%c", val);
426 /* same as Bochs power off */
427 if (val == shutdown_str[shutdown_index]) {
429 if (shutdown_index == 8) {
431 qemu_system_shutdown_request();
438 /* LGPL'ed VGA BIOS messages */
441 fprintf(stderr, "VGA BIOS panic, line %d\n", val);
446 fprintf(stderr, "%c", val);
452 extern uint64_t node_cpumask[MAX_NODES];
454 static void *bochs_bios_init(void)
457 uint8_t *smbios_table;
459 uint64_t *numa_fw_cfg;
462 register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
463 register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
464 register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
465 register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
466 register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
468 register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
469 register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
470 register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
471 register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
473 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);
508 /* Generate an initial boot sector which sets state and jump to
509 a specified vector */
510 static void generate_bootsect(target_phys_addr_t option_rom,
511 uint32_t gpr[8], uint16_t segs[6], uint16_t ip)
513 uint8_t rom[512], *p, *reloc;
517 memset(rom, 0, sizeof(rom));
520 /* Make sure we have an option rom signature */
524 /* ROM size in sectors*/
529 *p++ = 0x50; /* push ax */
530 *p++ = 0x1e; /* push ds */
531 *p++ = 0x31; *p++ = 0xc0; /* xor ax, ax */
532 *p++ = 0x8e; *p++ = 0xd8; /* mov ax, ds */
534 *p++ = 0xc7; *p++ = 0x06; /* movvw _start,0x64 */
535 *p++ = 0x64; *p++ = 0x00;
537 *p++ = 0x00; *p++ = 0x00;
539 *p++ = 0x8c; *p++ = 0x0e; /* mov cs,0x66 */
540 *p++ = 0x66; *p++ = 0x00;
542 *p++ = 0x1f; /* pop ds */
543 *p++ = 0x58; /* pop ax */
544 *p++ = 0xcb; /* lret */
549 *p++ = 0xfa; /* CLI */
550 *p++ = 0xfc; /* CLD */
552 for (i = 0; i < 6; i++) {
553 if (i == 1) /* Skip CS */
556 *p++ = 0xb8; /* MOV AX,imm16 */
559 *p++ = 0x8e; /* MOV <seg>,AX */
560 *p++ = 0xc0 + (i << 3);
563 for (i = 0; i < 8; i++) {
564 *p++ = 0x66; /* 32-bit operand size */
565 *p++ = 0xb8 + i; /* MOV <reg>,imm32 */
572 *p++ = 0xea; /* JMP FAR */
575 *p++ = segs[1]; /* CS */
580 for (i = 0; i < (sizeof(rom) - 1); i++)
582 rom[sizeof(rom) - 1] = -sum;
584 cpu_physical_memory_write_rom(option_rom, rom, sizeof(rom));
585 option_rom_setup_reset(option_rom, sizeof (rom));
588 static long get_file_size(FILE *f)
592 /* XXX: on Unix systems, using fstat() probably makes more sense */
595 fseek(f, 0, SEEK_END);
597 fseek(f, where, SEEK_SET);
602 #define MULTIBOOT_STRUCT_ADDR 0x9000
604 #if MULTIBOOT_STRUCT_ADDR > 0xf0000
605 #error multiboot struct needs to fit in 16 bit real mode
608 static int load_multiboot(void *fw_cfg,
610 const char *kernel_filename,
611 const char *initrd_filename,
612 const char *kernel_cmdline,
615 int i, t, is_multiboot = 0;
617 uint32_t mh_entry_addr;
618 uint32_t mh_load_addr;
619 uint32_t mb_kernel_size;
620 uint32_t mmap_addr = MULTIBOOT_STRUCT_ADDR;
621 uint32_t mb_bootinfo = MULTIBOOT_STRUCT_ADDR + 0x500;
622 uint32_t mb_cmdline = mb_bootinfo + 0x200;
625 /* Ok, let's see if it is a multiboot image.
626 The header is 12x32bit long, so the latest entry may be 8192 - 48. */
627 for (i = 0; i < (8192 - 48); i += 4) {
628 if (ldl_p(header+i) == 0x1BADB002) {
629 uint32_t checksum = ldl_p(header+i+8);
630 flags = ldl_p(header+i+4);
632 checksum += (uint32_t)0x1BADB002;
641 return 0; /* no multiboot */
643 #ifdef DEBUG_MULTIBOOT
644 fprintf(stderr, "qemu: I believe we found a multiboot image!\n");
647 if (flags & 0x00000004) { /* MULTIBOOT_HEADER_HAS_VBE */
648 fprintf(stderr, "qemu: multiboot knows VBE. we don't.\n");
650 if (!(flags & 0x00010000)) { /* MULTIBOOT_HEADER_HAS_ADDR */
654 kernel_size = load_elf(kernel_filename, 0, &elf_entry, NULL, NULL);
655 if (kernel_size < 0) {
656 fprintf(stderr, "Error while loading elf kernel\n");
659 mh_load_addr = mh_entry_addr = elf_entry;
660 mb_kernel_size = kernel_size;
662 #ifdef DEBUG_MULTIBOOT
663 fprintf(stderr, "qemu: loading multiboot-elf kernel (%#x bytes) with entry %#zx\n",
664 mb_kernel_size, (size_t)mh_entry_addr);
667 /* Valid if mh_flags sets MULTIBOOT_HEADER_HAS_ADDR. */
668 uint32_t mh_header_addr = ldl_p(header+i+12);
669 mh_load_addr = ldl_p(header+i+16);
670 #ifdef DEBUG_MULTIBOOT
671 uint32_t mh_load_end_addr = ldl_p(header+i+20);
672 uint32_t mh_bss_end_addr = ldl_p(header+i+24);
674 uint32_t mb_kernel_text_offset = i - (mh_header_addr - mh_load_addr);
676 mh_entry_addr = ldl_p(header+i+28);
677 mb_kernel_size = get_file_size(f) - mb_kernel_text_offset;
679 /* Valid if mh_flags sets MULTIBOOT_HEADER_HAS_VBE.
680 uint32_t mh_mode_type = ldl_p(header+i+32);
681 uint32_t mh_width = ldl_p(header+i+36);
682 uint32_t mh_height = ldl_p(header+i+40);
683 uint32_t mh_depth = ldl_p(header+i+44); */
685 #ifdef DEBUG_MULTIBOOT
686 fprintf(stderr, "multiboot: mh_header_addr = %#x\n", mh_header_addr);
687 fprintf(stderr, "multiboot: mh_load_addr = %#x\n", mh_load_addr);
688 fprintf(stderr, "multiboot: mh_load_end_addr = %#x\n", mh_load_end_addr);
689 fprintf(stderr, "multiboot: mh_bss_end_addr = %#x\n", mh_bss_end_addr);
692 fseek(f, mb_kernel_text_offset, SEEK_SET);
694 #ifdef DEBUG_MULTIBOOT
695 fprintf(stderr, "qemu: loading multiboot kernel (%#x bytes) at %#x\n",
696 mb_kernel_size, mh_load_addr);
699 if (!fread_targphys_ok(mh_load_addr, mb_kernel_size, f)) {
700 fprintf(stderr, "qemu: read error on multiboot kernel '%s' (%#x)\n",
701 kernel_filename, mb_kernel_size);
707 /* blob size is only the kernel for now */
708 mb_mod_end = mh_load_addr + mb_kernel_size;
711 stl_phys(mb_bootinfo + 20, 0x0); /* mods_count */
712 if (initrd_filename) {
713 uint32_t mb_mod_info = mb_bootinfo + 0x100;
714 uint32_t mb_mod_cmdline = mb_bootinfo + 0x300;
715 uint32_t mb_mod_start = mh_load_addr;
716 uint32_t mb_mod_length = mb_kernel_size;
719 int mb_mod_count = 0;
722 next_initrd = strchr(initrd_filename, ',');
725 /* if a space comes after the module filename, treat everything
726 after that as parameters */
727 cpu_physical_memory_write(mb_mod_cmdline, (uint8_t*)initrd_filename,
728 strlen(initrd_filename) + 1);
729 stl_phys(mb_mod_info + 8, mb_mod_cmdline); /* string */
730 mb_mod_cmdline += strlen(initrd_filename) + 1;
731 if ((next_space = strchr(initrd_filename, ' ')))
733 #ifdef DEBUG_MULTIBOOT
734 printf("multiboot loading module: %s\n", initrd_filename);
736 f = fopen(initrd_filename, "rb");
738 mb_mod_start = (mb_mod_start + mb_mod_length + (TARGET_PAGE_SIZE - 1))
739 & (TARGET_PAGE_MASK);
740 mb_mod_length = get_file_size(f);
741 mb_mod_end = mb_mod_start + mb_mod_length;
743 if (!fread_targphys_ok(mb_mod_start, mb_mod_length, f)) {
744 fprintf(stderr, "qemu: read error on multiboot module '%s' (%#x)\n",
745 initrd_filename, mb_mod_length);
750 stl_phys(mb_mod_info + 0, mb_mod_start);
751 stl_phys(mb_mod_info + 4, mb_mod_start + mb_mod_length);
752 #ifdef DEBUG_MULTIBOOT
753 printf("mod_start: %#x\nmod_end: %#x\n", mb_mod_start,
754 mb_mod_start + mb_mod_length);
756 stl_phys(mb_mod_info + 12, 0x0); /* reserved */
758 initrd_filename = next_initrd+1;
760 } while (next_initrd);
761 stl_phys(mb_bootinfo + 20, mb_mod_count); /* mods_count */
762 stl_phys(mb_bootinfo + 24, mb_bootinfo + 0x100); /* mods_addr */
765 /* Make sure we're getting kernel + modules back after reset */
766 option_rom_setup_reset(mh_load_addr, mb_mod_end - mh_load_addr);
768 /* Commandline support */
769 stl_phys(mb_bootinfo + 16, mb_cmdline);
770 t = strlen(kernel_filename);
771 cpu_physical_memory_write(mb_cmdline, (uint8_t*)kernel_filename, t);
773 stb_phys(mb_cmdline++, ' ');
774 t = strlen(kernel_cmdline) + 1;
775 cpu_physical_memory_write(mb_cmdline, (uint8_t*)kernel_cmdline, t);
777 /* the kernel is where we want it to be now */
779 #define MULTIBOOT_FLAGS_MEMORY (1 << 0)
780 #define MULTIBOOT_FLAGS_BOOT_DEVICE (1 << 1)
781 #define MULTIBOOT_FLAGS_CMDLINE (1 << 2)
782 #define MULTIBOOT_FLAGS_MODULES (1 << 3)
783 #define MULTIBOOT_FLAGS_MMAP (1 << 6)
784 stl_phys(mb_bootinfo, MULTIBOOT_FLAGS_MEMORY
785 | MULTIBOOT_FLAGS_BOOT_DEVICE
786 | MULTIBOOT_FLAGS_CMDLINE
787 | MULTIBOOT_FLAGS_MODULES
788 | MULTIBOOT_FLAGS_MMAP);
789 stl_phys(mb_bootinfo + 4, 640); /* mem_lower */
790 stl_phys(mb_bootinfo + 8, ram_size / 1024); /* mem_upper */
791 stl_phys(mb_bootinfo + 12, 0x8001ffff); /* XXX: use the -boot switch? */
792 stl_phys(mb_bootinfo + 48, mmap_addr); /* mmap_addr */
794 #ifdef DEBUG_MULTIBOOT
795 fprintf(stderr, "multiboot: mh_entry_addr = %#x\n", mh_entry_addr);
798 /* Pass variables to option rom */
799 fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, mh_entry_addr);
800 fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, mb_bootinfo);
801 fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, mmap_addr);
803 /* Make sure we're getting the config space back after reset */
804 option_rom_setup_reset(mb_bootinfo, 0x500);
806 option_rom[nb_option_roms] = "multiboot.bin";
809 return 1; /* yes, we are multiboot */
812 static void load_linux(void *fw_cfg,
813 target_phys_addr_t option_rom,
814 const char *kernel_filename,
815 const char *initrd_filename,
816 const char *kernel_cmdline,
817 target_phys_addr_t max_ram_size)
823 int setup_size, kernel_size, initrd_size = 0, cmdline_size;
825 uint8_t header[8192];
826 target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr = 0;
829 /* Align to 16 bytes as a paranoia measure */
830 cmdline_size = (strlen(kernel_cmdline)+16) & ~15;
832 /* load the kernel header */
833 f = fopen(kernel_filename, "rb");
834 if (!f || !(kernel_size = get_file_size(f)) ||
835 fread(header, 1, MIN(ARRAY_SIZE(header), kernel_size), f) !=
836 MIN(ARRAY_SIZE(header), kernel_size)) {
837 fprintf(stderr, "qemu: could not load kernel '%s'\n",
842 /* kernel protocol version */
844 fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
846 if (ldl_p(header+0x202) == 0x53726448)
847 protocol = lduw_p(header+0x206);
849 /* This looks like a multiboot kernel. If it is, let's stop
850 treating it like a Linux kernel. */
851 if (load_multiboot(fw_cfg, f, kernel_filename,
852 initrd_filename, kernel_cmdline, header))
857 if (protocol < 0x200 || !(header[0x211] & 0x01)) {
860 cmdline_addr = 0x9a000 - cmdline_size;
862 } else if (protocol < 0x202) {
863 /* High but ancient kernel */
865 cmdline_addr = 0x9a000 - cmdline_size;
866 prot_addr = 0x100000;
868 /* High and recent kernel */
870 cmdline_addr = 0x20000;
871 prot_addr = 0x100000;
876 "qemu: real_addr = 0x" TARGET_FMT_plx "\n"
877 "qemu: cmdline_addr = 0x" TARGET_FMT_plx "\n"
878 "qemu: prot_addr = 0x" TARGET_FMT_plx "\n",
884 /* highest address for loading the initrd */
885 if (protocol >= 0x203)
886 initrd_max = ldl_p(header+0x22c);
888 initrd_max = 0x37ffffff;
890 if (initrd_max >= max_ram_size-ACPI_DATA_SIZE)
891 initrd_max = max_ram_size-ACPI_DATA_SIZE-1;
893 /* kernel command line */
894 pstrcpy_targphys(cmdline_addr, 4096, kernel_cmdline);
896 if (protocol >= 0x202) {
897 stl_p(header+0x228, cmdline_addr);
899 stw_p(header+0x20, 0xA33F);
900 stw_p(header+0x22, cmdline_addr-real_addr);
904 /* High nybble = B reserved for Qemu; low nybble is revision number.
905 If this code is substantially changed, you may want to consider
906 incrementing the revision. */
907 if (protocol >= 0x200)
908 header[0x210] = 0xB0;
911 if (protocol >= 0x201) {
912 header[0x211] |= 0x80; /* CAN_USE_HEAP */
913 stw_p(header+0x224, cmdline_addr-real_addr-0x200);
917 if (initrd_filename) {
918 if (protocol < 0x200) {
919 fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
923 fi = fopen(initrd_filename, "rb");
925 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
930 initrd_size = get_file_size(fi);
931 initrd_addr = (initrd_max-initrd_size) & ~4095;
933 if (!fread_targphys_ok(initrd_addr, initrd_size, fi)) {
934 fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
940 stl_p(header+0x218, initrd_addr);
941 stl_p(header+0x21c, initrd_size);
944 /* store the finalized header and load the rest of the kernel */
945 cpu_physical_memory_write(real_addr, header, ARRAY_SIZE(header));
947 setup_size = header[0x1f1];
951 setup_size = (setup_size+1)*512;
952 /* Size of protected-mode code */
953 kernel_size -= (setup_size > ARRAY_SIZE(header)) ? setup_size : ARRAY_SIZE(header);
955 /* In case we have read too much already, copy that over */
956 if (setup_size < ARRAY_SIZE(header)) {
957 cpu_physical_memory_write(prot_addr, header + setup_size, ARRAY_SIZE(header) - setup_size);
958 prot_addr += (ARRAY_SIZE(header) - setup_size);
959 setup_size = ARRAY_SIZE(header);
962 if (!fread_targphys_ok(real_addr + ARRAY_SIZE(header),
963 setup_size - ARRAY_SIZE(header), f) ||
964 !fread_targphys_ok(prot_addr, kernel_size, f)) {
965 fprintf(stderr, "qemu: read error on kernel '%s'\n",
971 /* generate bootsector to set up the initial register state */
972 real_seg = real_addr >> 4;
973 seg[0] = seg[2] = seg[3] = seg[4] = seg[4] = real_seg;
974 seg[1] = real_seg+0x20; /* CS */
975 memset(gpr, 0, sizeof gpr);
976 gpr[4] = cmdline_addr-real_addr-16; /* SP (-16 is paranoia) */
978 option_rom_setup_reset(real_addr, setup_size);
979 option_rom_setup_reset(prot_addr, kernel_size);
980 option_rom_setup_reset(cmdline_addr, cmdline_size);
982 option_rom_setup_reset(initrd_addr, initrd_size);
984 generate_bootsect(option_rom, gpr, seg, 0);
987 static const int ide_iobase[2] = { 0x1f0, 0x170 };
988 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
989 static const int ide_irq[2] = { 14, 15 };
991 #define NE2000_NB_MAX 6
993 static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
994 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
996 static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
997 static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
999 static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
1000 static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
1003 static void audio_init (PCIBus *pci_bus, qemu_irq *pic)
1007 for (c = soundhw; c->name; ++c) {
1010 c->init.init_isa(pic);
1013 c->init.init_pci(pci_bus);
1021 static void pc_init_ne2k_isa(NICInfo *nd, qemu_irq *pic)
1023 static int nb_ne2k = 0;
1025 if (nb_ne2k == NE2000_NB_MAX)
1027 isa_ne2000_init(ne2000_io[nb_ne2k], pic[ne2000_irq[nb_ne2k]], nd);
1031 static int load_option_rom(const char *oprom, target_phys_addr_t start,
1032 target_phys_addr_t end)
1037 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, oprom);
1039 size = get_image_size(filename);
1040 if (size > 0 && start + size > end) {
1041 fprintf(stderr, "Not enough space to load option rom '%s'\n",
1045 size = load_image_targphys(filename, start, end - start);
1046 qemu_free(filename);
1051 fprintf(stderr, "Could not load option rom '%s'\n", oprom);
1054 /* Round up optiom rom size to the next 2k boundary */
1055 size = (size + 2047) & ~2047;
1056 option_rom_setup_reset(start, size);
1060 int cpu_is_bsp(CPUState *env)
1062 return env->cpuid_apic_id == 0;
1065 /* PC hardware initialisation */
1066 static void pc_init1(ram_addr_t ram_size,
1067 const char *boot_device,
1068 const char *kernel_filename, const char *kernel_cmdline,
1069 const char *initrd_filename,
1070 int pci_enabled, const char *cpu_model)
1073 int ret, linux_boot, i;
1074 ram_addr_t ram_addr, bios_offset, option_rom_offset;
1075 ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
1076 int bios_size, isa_bios_size, oprom_area_size;
1079 int piix3_devfn = -1;
1084 BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
1085 BlockDriverState *fd[MAX_FD];
1086 int using_vga = cirrus_vga_enabled || std_vga_enabled || vmsvga_enabled;
1089 if (ram_size >= 0xe0000000 ) {
1090 above_4g_mem_size = ram_size - 0xe0000000;
1091 below_4g_mem_size = 0xe0000000;
1093 below_4g_mem_size = ram_size;
1096 linux_boot = (kernel_filename != NULL);
1099 if (cpu_model == NULL) {
1100 #ifdef TARGET_X86_64
1101 cpu_model = "qemu64";
1103 cpu_model = "qemu32";
1107 for(i = 0; i < smp_cpus; i++) {
1108 env = cpu_init(cpu_model);
1110 fprintf(stderr, "Unable to find x86 CPU definition\n");
1113 if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) {
1114 env->cpuid_apic_id = env->cpu_index;
1115 /* APIC reset callback resets cpu */
1118 qemu_register_reset((QEMUResetHandler*)cpu_reset, 0, env);
1125 ram_addr = qemu_ram_alloc(0xa0000);
1126 cpu_register_physical_memory(0, 0xa0000, ram_addr);
1128 /* Allocate, even though we won't register, so we don't break the
1129 * phys_ram_base + PA assumption. This range includes vga (0xa0000 - 0xc0000),
1130 * and some bios areas, which will be registered later
1132 ram_addr = qemu_ram_alloc(0x100000 - 0xa0000);
1133 ram_addr = qemu_ram_alloc(below_4g_mem_size - 0x100000);
1134 cpu_register_physical_memory(0x100000,
1135 below_4g_mem_size - 0x100000,
1138 /* above 4giga memory allocation */
1139 if (above_4g_mem_size > 0) {
1140 #if TARGET_PHYS_ADDR_BITS == 32
1141 hw_error("To much RAM for 32-bit physical address");
1143 ram_addr = qemu_ram_alloc(above_4g_mem_size);
1144 cpu_register_physical_memory(0x100000000ULL,
1152 if (bios_name == NULL)
1153 bios_name = BIOS_FILENAME;
1154 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
1156 bios_size = get_image_size(filename);
1160 if (bios_size <= 0 ||
1161 (bios_size % 65536) != 0) {
1164 bios_offset = qemu_ram_alloc(bios_size);
1165 ret = load_image(filename, qemu_get_ram_ptr(bios_offset));
1166 if (ret != bios_size) {
1168 fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", bios_name);
1172 qemu_free(filename);
1174 /* map the last 128KB of the BIOS in ISA space */
1175 isa_bios_size = bios_size;
1176 if (isa_bios_size > (128 * 1024))
1177 isa_bios_size = 128 * 1024;
1178 cpu_register_physical_memory(0x100000 - isa_bios_size,
1180 (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
1184 option_rom_offset = qemu_ram_alloc(0x20000);
1185 oprom_area_size = 0;
1186 cpu_register_physical_memory(0xc0000, 0x20000, option_rom_offset);
1189 const char *vgabios_filename;
1191 if (cirrus_vga_enabled) {
1192 vgabios_filename = VGABIOS_CIRRUS_FILENAME;
1194 vgabios_filename = VGABIOS_FILENAME;
1196 oprom_area_size = load_option_rom(vgabios_filename, 0xc0000, 0xe0000);
1198 /* Although video roms can grow larger than 0x8000, the area between
1199 * 0xc0000 - 0xc8000 is reserved for them. It means we won't be looking
1200 * for any other kind of option rom inside this area */
1201 if (oprom_area_size < 0x8000)
1202 oprom_area_size = 0x8000;
1204 /* map all the bios at the top of memory */
1205 cpu_register_physical_memory((uint32_t)(-bios_size),
1206 bios_size, bios_offset | IO_MEM_ROM);
1208 fw_cfg = bochs_bios_init();
1211 load_linux(fw_cfg, 0xc0000 + oprom_area_size,
1212 kernel_filename, initrd_filename, kernel_cmdline, below_4g_mem_size);
1213 oprom_area_size += 2048;
1216 for (i = 0; i < nb_option_roms; i++) {
1217 oprom_area_size += load_option_rom(option_rom[i], 0xc0000 + oprom_area_size,
1221 for (i = 0; i < nb_nics; i++) {
1222 char nic_oprom[1024];
1223 const char *model = nd_table[i].model;
1225 if (!nd_table[i].bootable)
1230 snprintf(nic_oprom, sizeof(nic_oprom), "pxe-%s.bin", model);
1232 oprom_area_size += load_option_rom(nic_oprom, 0xc0000 + oprom_area_size,
1236 cpu_irq = qemu_allocate_irqs(pic_irq_request, NULL, 1);
1237 i8259 = i8259_init(cpu_irq[0]);
1238 ferr_irq = i8259[13];
1241 pci_bus = i440fx_init(&i440fx_state, i8259);
1242 piix3_devfn = piix3_init(pci_bus, -1);
1247 /* init basic PC hardware */
1248 register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
1250 register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
1252 if (cirrus_vga_enabled) {
1254 pci_cirrus_vga_init(pci_bus);
1256 isa_cirrus_vga_init();
1258 } else if (vmsvga_enabled) {
1260 pci_vmsvga_init(pci_bus);
1262 fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
1263 } else if (std_vga_enabled) {
1265 pci_vga_init(pci_bus, 0, 0);
1271 rtc_state = rtc_init(0x70, i8259[8], 2000);
1273 qemu_register_boot_set(pc_boot_set, rtc_state);
1275 register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
1276 register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
1279 ioapic = ioapic_init();
1281 pit = pit_init(0x40, i8259[0]);
1287 pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic);
1290 for(i = 0; i < MAX_SERIAL_PORTS; i++) {
1291 if (serial_hds[i]) {
1292 serial_init(serial_io[i], i8259[serial_irq[i]], 115200,
1297 for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
1298 if (parallel_hds[i]) {
1299 parallel_init(parallel_io[i], i8259[parallel_irq[i]],
1304 watchdog_pc_init(pci_bus);
1306 for(i = 0; i < nb_nics; i++) {
1307 NICInfo *nd = &nd_table[i];
1309 if (!pci_enabled || (nd->model && strcmp(nd->model, "ne2k_isa") == 0))
1310 pc_init_ne2k_isa(nd, i8259);
1312 pci_nic_init(nd, "ne2k_pci", NULL);
1315 piix4_acpi_system_hot_add_init();
1317 if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
1318 fprintf(stderr, "qemu: too many IDE bus\n");
1322 for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
1323 index = drive_get_index(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
1325 hd[i] = drives_table[index].bdrv;
1331 pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1, i8259);
1333 for(i = 0; i < MAX_IDE_BUS; i++) {
1334 isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
1335 hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
1339 i8042_init(i8259[1], i8259[12], 0x60);
1342 audio_init(pci_enabled ? pci_bus : NULL, i8259);
1345 for(i = 0; i < MAX_FD; i++) {
1346 index = drive_get_index(IF_FLOPPY, 0, i);
1348 fd[i] = drives_table[index].bdrv;
1352 floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd);
1354 cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, hd);
1356 if (pci_enabled && usb_enabled) {
1357 usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
1360 if (pci_enabled && acpi_enabled) {
1361 uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
1364 /* TODO: Populate SPD eeprom data. */
1365 smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, i8259[9]);
1366 for (i = 0; i < 8; i++) {
1367 DeviceState *eeprom;
1368 eeprom = qdev_create((BusState *)smbus, "smbus-eeprom");
1369 qdev_set_prop_int(eeprom, "address", 0x50 + i);
1370 qdev_set_prop_ptr(eeprom, "data", eeprom_buf + (i * 256));
1376 i440fx_init_memory_mappings(i440fx_state);
1383 max_bus = drive_get_max_bus(IF_SCSI);
1384 for (bus = 0; bus <= max_bus; bus++) {
1385 pci_create_simple(pci_bus, -1, "lsi53c895a");
1389 /* Add virtio block devices */
1394 while ((index = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) {
1395 pci_dev = pci_create("virtio-blk-pci",
1396 drives_table[index].devaddr);
1397 qdev_init(&pci_dev->qdev);
1402 /* Add virtio balloon device */
1403 if (pci_enabled && !no_virtio_balloon) {
1404 pci_create_simple(pci_bus, -1, "virtio-balloon-pci");
1407 /* Add virtio console devices */
1409 for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
1410 if (virtcon_hds[i]) {
1411 pci_create_simple(pci_bus, -1, "virtio-console-pci");
1417 static void pc_init_pci(ram_addr_t ram_size,
1418 const char *boot_device,
1419 const char *kernel_filename,
1420 const char *kernel_cmdline,
1421 const char *initrd_filename,
1422 const char *cpu_model)
1424 pc_init1(ram_size, boot_device,
1425 kernel_filename, kernel_cmdline,
1426 initrd_filename, 1, cpu_model);
1429 static void pc_init_isa(ram_addr_t ram_size,
1430 const char *boot_device,
1431 const char *kernel_filename,
1432 const char *kernel_cmdline,
1433 const char *initrd_filename,
1434 const char *cpu_model)
1436 pc_init1(ram_size, boot_device,
1437 kernel_filename, kernel_cmdline,
1438 initrd_filename, 0, cpu_model);
1441 /* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
1442 BIOS will read it and start S3 resume at POST Entry */
1443 void cmos_set_s3_resume(void)
1446 rtc_set_memory(rtc_state, 0xF, 0xFE);
1449 static QEMUMachine pc_machine = {
1451 .desc = "Standard PC",
1452 .init = pc_init_pci,
1457 static QEMUMachine isapc_machine = {
1459 .desc = "ISA-only PC",
1460 .init = pc_init_isa,
1464 static void pc_machine_init(void)
1466 qemu_register_machine(&pc_machine);
1467 qemu_register_machine(&isapc_machine);
1470 machine_init(pc_machine_init);