/* * QEMU PC System Emulator * * Copyright (c) 2003-2004 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "hw.h" #include "pc.h" #include "apic.h" #include "fdc.h" #include "pci.h" #include "vmware_vga.h" #include "monitor.h" #include "fw_cfg.h" #include "hpet_emul.h" #include "smbios.h" #include "loader.h" #include "elf.h" #include "multiboot.h" #include "mc146818rtc.h" #include "sysemu.h" /* output Bochs bios info messages */ //#define DEBUG_BIOS /* debug PC/ISA interrupts */ //#define DEBUG_IRQ #ifdef DEBUG_IRQ #define DPRINTF(fmt, ...) \ do { printf("CPUIRQ: " fmt , ## __VA_ARGS__); } while (0) #else #define DPRINTF(fmt, ...) #endif #define BIOS_FILENAME "bios.bin" #define PC_MAX_BIOS_SIZE (4 * 1024 * 1024) /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */ #define ACPI_DATA_SIZE 0x10000 #define BIOS_CFG_IOPORT 0x510 #define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0) #define FW_CFG_SMBIOS_ENTRIES (FW_CFG_ARCH_LOCAL + 1) #define FW_CFG_IRQ0_OVERRIDE (FW_CFG_ARCH_LOCAL + 2) #define FW_CFG_E820_TABLE (FW_CFG_ARCH_LOCAL + 3) #define E820_NR_ENTRIES 16 struct e820_entry { uint64_t address; uint64_t length; uint32_t type; }; struct e820_table { uint32_t count; struct e820_entry entry[E820_NR_ENTRIES]; }; static struct e820_table e820_table; void isa_irq_handler(void *opaque, int n, int level) { IsaIrqState *isa = (IsaIrqState *)opaque; DPRINTF("isa_irqs: %s irq %d\n", level? "raise" : "lower", n); if (n < 16) { qemu_set_irq(isa->i8259[n], level); } if (isa->ioapic) qemu_set_irq(isa->ioapic[n], level); }; static void ioport80_write(void *opaque, uint32_t addr, uint32_t data) { } /* MSDOS compatibility mode FPU exception support */ static qemu_irq ferr_irq; void pc_register_ferr_irq(qemu_irq irq) { ferr_irq = irq; } /* XXX: add IGNNE support */ void cpu_set_ferr(CPUX86State *s) { qemu_irq_raise(ferr_irq); } static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data) { qemu_irq_lower(ferr_irq); } /* TSC handling */ uint64_t cpu_get_tsc(CPUX86State *env) { return cpu_get_ticks(); } /* SMM support */ static cpu_set_smm_t smm_set; static void *smm_arg; void cpu_smm_register(cpu_set_smm_t callback, void *arg) { assert(smm_set == NULL); assert(smm_arg == NULL); smm_set = callback; smm_arg = arg; } void cpu_smm_update(CPUState *env) { if (smm_set && smm_arg && env == first_cpu) smm_set(!!(env->hflags & HF_SMM_MASK), smm_arg); } /* IRQ handling */ int cpu_get_pic_interrupt(CPUState *env) { int intno; intno = apic_get_interrupt(env); if (intno >= 0) { /* set irq request if a PIC irq is still pending */ /* XXX: improve that */ pic_update_irq(isa_pic); return intno; } /* read the irq from the PIC */ if (!apic_accept_pic_intr(env)) return -1; intno = pic_read_irq(isa_pic); return intno; } static void pic_irq_request(void *opaque, int irq, int level) { CPUState *env = first_cpu; DPRINTF("pic_irqs: %s irq %d\n", level? "raise" : "lower", irq); if (env->apic_state) { while (env) { if (apic_accept_pic_intr(env)) apic_deliver_pic_intr(env, level); env = env->next_cpu; } } else { if (level) cpu_interrupt(env, CPU_INTERRUPT_HARD); else cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); } } /* PC cmos mappings */ #define REG_EQUIPMENT_BYTE 0x14 static int cmos_get_fd_drive_type(int fd0) { int val; switch (fd0) { case 0: /* 1.44 Mb 3"5 drive */ val = 4; break; case 1: /* 2.88 Mb 3"5 drive */ val = 5; break; case 2: /* 1.2 Mb 5"5 drive */ val = 2; break; default: val = 0; break; } return val; } static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd, ISADevice *s) { int cylinders, heads, sectors; bdrv_get_geometry_hint(hd, &cylinders, &heads, §ors); rtc_set_memory(s, type_ofs, 47); rtc_set_memory(s, info_ofs, cylinders); rtc_set_memory(s, info_ofs + 1, cylinders >> 8); rtc_set_memory(s, info_ofs + 2, heads); rtc_set_memory(s, info_ofs + 3, 0xff); rtc_set_memory(s, info_ofs + 4, 0xff); rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3)); rtc_set_memory(s, info_ofs + 6, cylinders); rtc_set_memory(s, info_ofs + 7, cylinders >> 8); rtc_set_memory(s, info_ofs + 8, sectors); } /* convert boot_device letter to something recognizable by the bios */ static int boot_device2nibble(char boot_device) { switch(boot_device) { case 'a': case 'b': return 0x01; /* floppy boot */ case 'c': return 0x02; /* hard drive boot */ case 'd': return 0x03; /* CD-ROM boot */ case 'n': return 0x04; /* Network boot */ } return 0; } static int set_boot_dev(ISADevice *s, const char *boot_device, int fd_bootchk) { #define PC_MAX_BOOT_DEVICES 3 int nbds, bds[3] = { 0, }; int i; nbds = strlen(boot_device); if (nbds > PC_MAX_BOOT_DEVICES) { error_report("Too many boot devices for PC"); return(1); } for (i = 0; i < nbds; i++) { bds[i] = boot_device2nibble(boot_device[i]); if (bds[i] == 0) { error_report("Invalid boot device for PC: '%c'", boot_device[i]); return(1); } } rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]); rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1)); return(0); } static int pc_boot_set(void *opaque, const char *boot_device) { return set_boot_dev(opaque, boot_device, 0); } /* hd_table must contain 4 block drivers */ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size, const char *boot_device, DriveInfo **hd_table, FDCtrl *floppy_controller, ISADevice *s) { int val; int fd0, fd1, nb; int i; /* various important CMOS locations needed by PC/Bochs bios */ /* memory size */ val = 640; /* base memory in K */ rtc_set_memory(s, 0x15, val); rtc_set_memory(s, 0x16, val >> 8); val = (ram_size / 1024) - 1024; if (val > 65535) val = 65535; rtc_set_memory(s, 0x17, val); rtc_set_memory(s, 0x18, val >> 8); rtc_set_memory(s, 0x30, val); rtc_set_memory(s, 0x31, val >> 8); if (above_4g_mem_size) { rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16); rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24); rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32); } if (ram_size > (16 * 1024 * 1024)) val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536); else val = 0; if (val > 65535) val = 65535; rtc_set_memory(s, 0x34, val); rtc_set_memory(s, 0x35, val >> 8); /* set the number of CPU */ rtc_set_memory(s, 0x5f, smp_cpus - 1); /* set boot devices, and disable floppy signature check if requested */ if (set_boot_dev(s, boot_device, fd_bootchk)) { exit(1); } /* floppy type */ fd0 = fdctrl_get_drive_type(floppy_controller, 0); fd1 = fdctrl_get_drive_type(floppy_controller, 1); val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1); rtc_set_memory(s, 0x10, val); val = 0; nb = 0; if (fd0 < 3) nb++; if (fd1 < 3) nb++; switch (nb) { case 0: break; case 1: val |= 0x01; /* 1 drive, ready for boot */ break; case 2: val |= 0x41; /* 2 drives, ready for boot */ break; } val |= 0x02; /* FPU is there */ val |= 0x04; /* PS/2 mouse installed */ rtc_set_memory(s, REG_EQUIPMENT_BYTE, val); /* hard drives */ rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0)); if (hd_table[0]) cmos_init_hd(0x19, 0x1b, hd_table[0]->bdrv, s); if (hd_table[1]) cmos_init_hd(0x1a, 0x24, hd_table[1]->bdrv, s); val = 0; for (i = 0; i < 4; i++) { if (hd_table[i]) { int cylinders, heads, sectors, translation; /* NOTE: bdrv_get_geometry_hint() returns the physical geometry. It is always such that: 1 <= sects <= 63, 1 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS geometry can be different if a translation is done. */ translation = bdrv_get_translation_hint(hd_table[i]->bdrv); if (translation == BIOS_ATA_TRANSLATION_AUTO) { bdrv_get_geometry_hint(hd_table[i]->bdrv, &cylinders, &heads, §ors); if (cylinders <= 1024 && heads <= 16 && sectors <= 63) { /* No translation. */ translation = 0; } else { /* LBA translation. */ translation = 1; } } else { translation--; } val |= translation << (i * 2); } } rtc_set_memory(s, 0x39, val); } static void handle_a20_line_change(void *opaque, int irq, int level) { CPUState *cpu = opaque; /* XXX: send to all CPUs ? */ cpu_x86_set_a20(cpu, level); } /***********************************************************/ /* Bochs BIOS debug ports */ static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val) { static const char shutdown_str[8] = "Shutdown"; static int shutdown_index = 0; switch(addr) { /* Bochs BIOS messages */ case 0x400: case 0x401: fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val); exit(1); case 0x402: case 0x403: #ifdef DEBUG_BIOS fprintf(stderr, "%c", val); #endif break; case 0x8900: /* same as Bochs power off */ if (val == shutdown_str[shutdown_index]) { shutdown_index++; if (shutdown_index == 8) { shutdown_index = 0; qemu_system_shutdown_request(); } } else { shutdown_index = 0; } break; /* LGPL'ed VGA BIOS messages */ case 0x501: case 0x502: fprintf(stderr, "VGA BIOS panic, line %d\n", val); exit(1); case 0x500: case 0x503: #ifdef DEBUG_BIOS fprintf(stderr, "%c", val); #endif break; } } int e820_add_entry(uint64_t address, uint64_t length, uint32_t type) { int index = e820_table.count; struct e820_entry *entry; if (index >= E820_NR_ENTRIES) return -EBUSY; entry = &e820_table.entry[index]; entry->address = address; entry->length = length; entry->type = type; e820_table.count++; return e820_table.count; } static void *bochs_bios_init(void) { void *fw_cfg; uint8_t *smbios_table; size_t smbios_len; uint64_t *numa_fw_cfg; int i, j; register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL); register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL); register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL); register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL); register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL); register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL); register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL); register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL); register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL); fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0); fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1); fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size); fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, (uint8_t *)acpi_tables, acpi_tables_len); fw_cfg_add_bytes(fw_cfg, FW_CFG_IRQ0_OVERRIDE, &irq0override, 1); smbios_table = smbios_get_table(&smbios_len); if (smbios_table) fw_cfg_add_bytes(fw_cfg, FW_CFG_SMBIOS_ENTRIES, smbios_table, smbios_len); fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE, (uint8_t *)&e820_table, sizeof(struct e820_table)); /* allocate memory for the NUMA channel: one (64bit) word for the number * of nodes, one word for each VCPU->node and one word for each node to * hold the amount of memory. */ numa_fw_cfg = qemu_mallocz((1 + smp_cpus + nb_numa_nodes) * 8); numa_fw_cfg[0] = cpu_to_le64(nb_numa_nodes); for (i = 0; i < smp_cpus; i++) { for (j = 0; j < nb_numa_nodes; j++) { if (node_cpumask[j] & (1 << i)) { numa_fw_cfg[i + 1] = cpu_to_le64(j); break; } } } for (i = 0; i < nb_numa_nodes; i++) { numa_fw_cfg[smp_cpus + 1 + i] = cpu_to_le64(node_mem[i]); } fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, (uint8_t *)numa_fw_cfg, (1 + smp_cpus + nb_numa_nodes) * 8); return fw_cfg; } static long get_file_size(FILE *f) { long where, size; /* XXX: on Unix systems, using fstat() probably makes more sense */ where = ftell(f); fseek(f, 0, SEEK_END); size = ftell(f); fseek(f, where, SEEK_SET); return size; } static void load_linux(void *fw_cfg, const char *kernel_filename, const char *initrd_filename, const char *kernel_cmdline, target_phys_addr_t max_ram_size) { uint16_t protocol; int setup_size, kernel_size, initrd_size = 0, cmdline_size; uint32_t initrd_max; uint8_t header[8192], *setup, *kernel, *initrd_data; target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr = 0; FILE *f; char *vmode; /* Align to 16 bytes as a paranoia measure */ cmdline_size = (strlen(kernel_cmdline)+16) & ~15; /* load the kernel header */ f = fopen(kernel_filename, "rb"); if (!f || !(kernel_size = get_file_size(f)) || fread(header, 1, MIN(ARRAY_SIZE(header), kernel_size), f) != MIN(ARRAY_SIZE(header), kernel_size)) { fprintf(stderr, "qemu: could not load kernel '%s': %s\n", kernel_filename, strerror(errno)); exit(1); } /* kernel protocol version */ #if 0 fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202)); #endif if (ldl_p(header+0x202) == 0x53726448) protocol = lduw_p(header+0x206); else { /* This looks like a multiboot kernel. If it is, let's stop treating it like a Linux kernel. */ if (load_multiboot(fw_cfg, f, kernel_filename, initrd_filename, kernel_cmdline, kernel_size, header)) return; protocol = 0; } if (protocol < 0x200 || !(header[0x211] & 0x01)) { /* Low kernel */ real_addr = 0x90000; cmdline_addr = 0x9a000 - cmdline_size; prot_addr = 0x10000; } else if (protocol < 0x202) { /* High but ancient kernel */ real_addr = 0x90000; cmdline_addr = 0x9a000 - cmdline_size; prot_addr = 0x100000; } else { /* High and recent kernel */ real_addr = 0x10000; cmdline_addr = 0x20000; prot_addr = 0x100000; } #if 0 fprintf(stderr, "qemu: real_addr = 0x" TARGET_FMT_plx "\n" "qemu: cmdline_addr = 0x" TARGET_FMT_plx "\n" "qemu: prot_addr = 0x" TARGET_FMT_plx "\n", real_addr, cmdline_addr, prot_addr); #endif /* highest address for loading the initrd */ if (protocol >= 0x203) initrd_max = ldl_p(header+0x22c); else initrd_max = 0x37ffffff; if (initrd_max >= max_ram_size-ACPI_DATA_SIZE) initrd_max = max_ram_size-ACPI_DATA_SIZE-1; fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_ADDR, cmdline_addr); fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(kernel_cmdline)+1); fw_cfg_add_bytes(fw_cfg, FW_CFG_CMDLINE_DATA, (uint8_t*)strdup(kernel_cmdline), strlen(kernel_cmdline)+1); if (protocol >= 0x202) { stl_p(header+0x228, cmdline_addr); } else { stw_p(header+0x20, 0xA33F); stw_p(header+0x22, cmdline_addr-real_addr); } /* handle vga= parameter */ vmode = strstr(kernel_cmdline, "vga="); if (vmode) { unsigned int video_mode; /* skip "vga=" */ vmode += 4; if (!strncmp(vmode, "normal", 6)) { video_mode = 0xffff; } else if (!strncmp(vmode, "ext", 3)) { video_mode = 0xfffe; } else if (!strncmp(vmode, "ask", 3)) { video_mode = 0xfffd; } else { video_mode = strtol(vmode, NULL, 0); } stw_p(header+0x1fa, video_mode); } /* loader type */ /* High nybble = B reserved for Qemu; low nybble is revision number. If this code is substantially changed, you may want to consider incrementing the revision. */ if (protocol >= 0x200) header[0x210] = 0xB0; /* heap */ if (protocol >= 0x201) { header[0x211] |= 0x80; /* CAN_USE_HEAP */ stw_p(header+0x224, cmdline_addr-real_addr-0x200); } /* load initrd */ if (initrd_filename) { if (protocol < 0x200) { fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n"); exit(1); } initrd_size = get_image_size(initrd_filename); if (initrd_size < 0) { fprintf(stderr, "qemu: error reading initrd %s\n", initrd_filename); exit(1); } initrd_addr = (initrd_max-initrd_size) & ~4095; initrd_data = qemu_malloc(initrd_size); load_image(initrd_filename, initrd_data); fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr); fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size); fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data, initrd_size); stl_p(header+0x218, initrd_addr); stl_p(header+0x21c, initrd_size); } /* load kernel and setup */ setup_size = header[0x1f1]; if (setup_size == 0) setup_size = 4; setup_size = (setup_size+1)*512; kernel_size -= setup_size; setup = qemu_malloc(setup_size); kernel = qemu_malloc(kernel_size); fseek(f, 0, SEEK_SET); if (fread(setup, 1, setup_size, f) != setup_size) { fprintf(stderr, "fread() failed\n"); exit(1); } if (fread(kernel, 1, kernel_size, f) != kernel_size) { fprintf(stderr, "fread() failed\n"); exit(1); } fclose(f); memcpy(setup, header, MIN(sizeof(header), setup_size)); fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, prot_addr); fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size); fw_cfg_add_bytes(fw_cfg, FW_CFG_KERNEL_DATA, kernel, kernel_size); fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_ADDR, real_addr); fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_SIZE, setup_size); fw_cfg_add_bytes(fw_cfg, FW_CFG_SETUP_DATA, setup, setup_size); option_rom[nb_option_roms] = "linuxboot.bin"; nb_option_roms++; } #define NE2000_NB_MAX 6 static const int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 }; static const int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; static const int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc }; static const int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 }; #ifdef HAS_AUDIO void pc_audio_init (PCIBus *pci_bus, qemu_irq *pic) { struct soundhw *c; for (c = soundhw; c->name; ++c) { if (c->enabled) { if (c->isa) { c->init.init_isa(pic); } else { if (pci_bus) { c->init.init_pci(pci_bus); } } } } } #endif void pc_init_ne2k_isa(NICInfo *nd) { static int nb_ne2k = 0; if (nb_ne2k == NE2000_NB_MAX) return; isa_ne2000_init(ne2000_io[nb_ne2k], ne2000_irq[nb_ne2k], nd); nb_ne2k++; } int cpu_is_bsp(CPUState *env) { /* We hard-wire the BSP to the first CPU. */ return env->cpu_index == 0; } /* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE) BIOS will read it and start S3 resume at POST Entry */ void pc_cmos_set_s3_resume(void *opaque, int irq, int level) { ISADevice *s = opaque; if (level) { rtc_set_memory(s, 0xF, 0xFE); } } void pc_acpi_smi_interrupt(void *opaque, int irq, int level) { CPUState *s = opaque; if (level) { cpu_interrupt(s, CPU_INTERRUPT_SMI); } } static CPUState *pc_new_cpu(const char *cpu_model) { CPUState *env; env = cpu_init(cpu_model); if (!env) { fprintf(stderr, "Unable to find x86 CPU definition\n"); exit(1); } if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) { env->cpuid_apic_id = env->cpu_index; /* APIC reset callback resets cpu */ apic_init(env); } else { qemu_register_reset((QEMUResetHandler*)cpu_reset, env); } return env; } void pc_cpus_init(const char *cpu_model) { int i; /* init CPUs */ if (cpu_model == NULL) { #ifdef TARGET_X86_64 cpu_model = "qemu64"; #else cpu_model = "qemu32"; #endif } for(i = 0; i < smp_cpus; i++) { pc_new_cpu(cpu_model); } } void pc_memory_init(ram_addr_t ram_size, const char *kernel_filename, const char *kernel_cmdline, const char *initrd_filename, ram_addr_t *below_4g_mem_size_p, ram_addr_t *above_4g_mem_size_p) { char *filename; int ret, linux_boot, i; ram_addr_t ram_addr, bios_offset, option_rom_offset; ram_addr_t below_4g_mem_size, above_4g_mem_size = 0; int bios_size, isa_bios_size; void *fw_cfg; if (ram_size >= 0xe0000000 ) { above_4g_mem_size = ram_size - 0xe0000000; below_4g_mem_size = 0xe0000000; } else { below_4g_mem_size = ram_size; } *above_4g_mem_size_p = above_4g_mem_size; *below_4g_mem_size_p = below_4g_mem_size; linux_boot = (kernel_filename != NULL); /* allocate RAM */ ram_addr = qemu_ram_alloc(below_4g_mem_size); cpu_register_physical_memory(0, 0xa0000, ram_addr); cpu_register_physical_memory(0x100000, below_4g_mem_size - 0x100000, ram_addr + 0x100000); /* above 4giga memory allocation */ if (above_4g_mem_size > 0) { #if TARGET_PHYS_ADDR_BITS == 32 hw_error("To much RAM for 32-bit physical address"); #else ram_addr = qemu_ram_alloc(above_4g_mem_size); cpu_register_physical_memory(0x100000000ULL, above_4g_mem_size, ram_addr); #endif } /* BIOS load */ if (bios_name == NULL) bios_name = BIOS_FILENAME; filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); if (filename) { bios_size = get_image_size(filename); } else { bios_size = -1; } if (bios_size <= 0 || (bios_size % 65536) != 0) { goto bios_error; } bios_offset = qemu_ram_alloc(bios_size); ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size)); if (ret != 0) { bios_error: fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", bios_name); exit(1); } if (filename) { qemu_free(filename); } /* map the last 128KB of the BIOS in ISA space */ isa_bios_size = bios_size; if (isa_bios_size > (128 * 1024)) isa_bios_size = 128 * 1024; cpu_register_physical_memory(0x100000 - isa_bios_size, isa_bios_size, (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM); option_rom_offset = qemu_ram_alloc(PC_ROM_SIZE); cpu_register_physical_memory(PC_ROM_MIN_VGA, PC_ROM_SIZE, option_rom_offset); /* map all the bios at the top of memory */ cpu_register_physical_memory((uint32_t)(-bios_size), bios_size, bios_offset | IO_MEM_ROM); fw_cfg = bochs_bios_init(); rom_set_fw(fw_cfg); if (linux_boot) { load_linux(fw_cfg, kernel_filename, initrd_filename, kernel_cmdline, below_4g_mem_size); } for (i = 0; i < nb_option_roms; i++) { rom_add_option(option_rom[i]); } } qemu_irq *pc_allocate_cpu_irq(void) { return qemu_allocate_irqs(pic_irq_request, NULL, 1); } void pc_vga_init(PCIBus *pci_bus) { if (cirrus_vga_enabled) { if (pci_bus) { pci_cirrus_vga_init(pci_bus); } else { isa_cirrus_vga_init(); } } else if (vmsvga_enabled) { if (pci_bus) pci_vmsvga_init(pci_bus); else fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__); } else if (std_vga_enabled) { if (pci_bus) { pci_vga_init(pci_bus, 0, 0); } else { isa_vga_init(); } } } static void cpu_request_exit(void *opaque, int irq, int level) { CPUState *env = cpu_single_env; if (env && level) { cpu_exit(env); } } void pc_basic_device_init(qemu_irq *isa_irq, FDCtrl **floppy_controller, ISADevice **rtc_state) { int i; DriveInfo *fd[MAX_FD]; PITState *pit; qemu_irq *a20_line; ISADevice *i8042; qemu_irq *cpu_exit_irq; register_ioport_write(0x80, 1, 1, ioport80_write, NULL); register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL); *rtc_state = rtc_init(2000); qemu_register_boot_set(pc_boot_set, *rtc_state); pit = pit_init(0x40, isa_reserve_irq(0)); pcspk_init(pit); if (!no_hpet) { hpet_init(isa_irq); } for(i = 0; i < MAX_SERIAL_PORTS; i++) { if (serial_hds[i]) { serial_isa_init(i, serial_hds[i]); } } for(i = 0; i < MAX_PARALLEL_PORTS; i++) { if (parallel_hds[i]) { parallel_init(i, parallel_hds[i]); } } a20_line = qemu_allocate_irqs(handle_a20_line_change, first_cpu, 1); i8042 = isa_create_simple("i8042"); i8042_setup_a20_line(i8042, a20_line); vmmouse_init(i8042); cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); DMA_init(0, cpu_exit_irq); for(i = 0; i < MAX_FD; i++) { fd[i] = drive_get(IF_FLOPPY, 0, i); } *floppy_controller = fdctrl_init_isa(fd); } void pc_pci_device_init(PCIBus *pci_bus) { int max_bus; int bus; max_bus = drive_get_max_bus(IF_SCSI); for (bus = 0; bus <= max_bus; bus++) { pci_create_simple(pci_bus, -1, "lsi53c895a"); } }