/* * 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 "qemu/osdep.h" #include "hw/hw.h" #include "hw/i386/pc.h" #include "hw/char/serial.h" #include "hw/i386/apic.h" #include "hw/i386/topology.h" #include "sysemu/cpus.h" #include "hw/block/fdc.h" #include "hw/ide.h" #include "hw/pci/pci.h" #include "hw/pci/pci_bus.h" #include "hw/nvram/fw_cfg.h" #include "hw/timer/hpet.h" #include "hw/smbios/smbios.h" #include "hw/loader.h" #include "elf.h" #include "multiboot.h" #include "hw/timer/mc146818rtc.h" #include "hw/timer/i8254.h" #include "hw/audio/pcspk.h" #include "hw/pci/msi.h" #include "hw/sysbus.h" #include "sysemu/sysemu.h" #include "sysemu/numa.h" #include "sysemu/kvm.h" #include "sysemu/qtest.h" #include "kvm_i386.h" #include "hw/xen/xen.h" #include "sysemu/block-backend.h" #include "hw/block/block.h" #include "ui/qemu-spice.h" #include "exec/memory.h" #include "exec/address-spaces.h" #include "sysemu/arch_init.h" #include "qemu/bitmap.h" #include "qemu/config-file.h" #include "qemu/error-report.h" #include "hw/acpi/acpi.h" #include "hw/acpi/cpu_hotplug.h" #include "hw/boards.h" #include "hw/pci/pci_host.h" #include "acpi-build.h" #include "hw/mem/pc-dimm.h" #include "qapi/visitor.h" #include "qapi-visit.h" #include "qom/cpu.h" #include "hw/nmi.h" /* 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 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 FW_CFG_HPET (FW_CFG_ARCH_LOCAL + 4) #define E820_NR_ENTRIES 16 struct e820_entry { uint64_t address; uint64_t length; uint32_t type; } QEMU_PACKED __attribute((__aligned__(4))); struct e820_table { uint32_t count; struct e820_entry entry[E820_NR_ENTRIES]; } QEMU_PACKED __attribute((__aligned__(4))); static struct e820_table e820_reserve; static struct e820_entry *e820_table; static unsigned e820_entries; struct hpet_fw_config hpet_cfg = {.count = UINT8_MAX}; void gsi_handler(void *opaque, int n, int level) { GSIState *s = opaque; DPRINTF("pc: %s GSI %d\n", level ? "raising" : "lowering", n); if (n < ISA_NUM_IRQS) { qemu_set_irq(s->i8259_irq[n], level); } qemu_set_irq(s->ioapic_irq[n], level); } static void ioport80_write(void *opaque, hwaddr addr, uint64_t data, unsigned size) { } static uint64_t ioport80_read(void *opaque, hwaddr addr, unsigned size) { return 0xffffffffffffffffULL; } /* 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, hwaddr addr, uint64_t data, unsigned size) { qemu_irq_lower(ferr_irq); } static uint64_t ioportF0_read(void *opaque, hwaddr addr, unsigned size) { return 0xffffffffffffffffULL; } /* TSC handling */ uint64_t cpu_get_tsc(CPUX86State *env) { return cpu_get_ticks(); } /* IRQ handling */ int cpu_get_pic_interrupt(CPUX86State *env) { X86CPU *cpu = x86_env_get_cpu(env); int intno; intno = apic_get_interrupt(cpu->apic_state); if (intno >= 0) { return intno; } /* read the irq from the PIC */ if (!apic_accept_pic_intr(cpu->apic_state)) { return -1; } intno = pic_read_irq(isa_pic); return intno; } static void pic_irq_request(void *opaque, int irq, int level) { CPUState *cs = first_cpu; X86CPU *cpu = X86_CPU(cs); DPRINTF("pic_irqs: %s irq %d\n", level? "raise" : "lower", irq); if (cpu->apic_state) { CPU_FOREACH(cs) { cpu = X86_CPU(cs); if (apic_accept_pic_intr(cpu->apic_state)) { apic_deliver_pic_intr(cpu->apic_state, level); } } } else { if (level) { cpu_interrupt(cs, CPU_INTERRUPT_HARD); } else { cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); } } } /* PC cmos mappings */ #define REG_EQUIPMENT_BYTE 0x14 int cmos_get_fd_drive_type(FloppyDriveType fd0) { int val; switch (fd0) { case FLOPPY_DRIVE_TYPE_144: /* 1.44 Mb 3"5 drive */ val = 4; break; case FLOPPY_DRIVE_TYPE_288: /* 2.88 Mb 3"5 drive */ val = 5; break; case FLOPPY_DRIVE_TYPE_120: /* 1.2 Mb 5"5 drive */ val = 2; break; case FLOPPY_DRIVE_TYPE_NONE: default: val = 0; break; } return val; } static void cmos_init_hd(ISADevice *s, int type_ofs, int info_ofs, int16_t cylinders, int8_t heads, int8_t sectors) { 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 void set_boot_dev(ISADevice *s, const char *boot_device, Error **errp) { #define PC_MAX_BOOT_DEVICES 3 int nbds, bds[3] = { 0, }; int i; nbds = strlen(boot_device); if (nbds > PC_MAX_BOOT_DEVICES) { error_setg(errp, "Too many boot devices for PC"); return; } for (i = 0; i < nbds; i++) { bds[i] = boot_device2nibble(boot_device[i]); if (bds[i] == 0) { error_setg(errp, "Invalid boot device for PC: '%c'", boot_device[i]); return; } } rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]); rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1)); } static void pc_boot_set(void *opaque, const char *boot_device, Error **errp) { set_boot_dev(opaque, boot_device, errp); } static void pc_cmos_init_floppy(ISADevice *rtc_state, ISADevice *floppy) { int val, nb, i; FloppyDriveType fd_type[2] = { FLOPPY_DRIVE_TYPE_NONE, FLOPPY_DRIVE_TYPE_NONE }; /* floppy type */ if (floppy) { for (i = 0; i < 2; i++) { fd_type[i] = isa_fdc_get_drive_type(floppy, i); } } val = (cmos_get_fd_drive_type(fd_type[0]) << 4) | cmos_get_fd_drive_type(fd_type[1]); rtc_set_memory(rtc_state, 0x10, val); val = rtc_get_memory(rtc_state, REG_EQUIPMENT_BYTE); nb = 0; if (fd_type[0] != FLOPPY_DRIVE_TYPE_NONE) { nb++; } if (fd_type[1] != FLOPPY_DRIVE_TYPE_NONE) { 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; } rtc_set_memory(rtc_state, REG_EQUIPMENT_BYTE, val); } typedef struct pc_cmos_init_late_arg { ISADevice *rtc_state; BusState *idebus[2]; } pc_cmos_init_late_arg; typedef struct check_fdc_state { ISADevice *floppy; bool multiple; } CheckFdcState; static int check_fdc(Object *obj, void *opaque) { CheckFdcState *state = opaque; Object *fdc; uint32_t iobase; Error *local_err = NULL; fdc = object_dynamic_cast(obj, TYPE_ISA_FDC); if (!fdc) { return 0; } iobase = object_property_get_int(obj, "iobase", &local_err); if (local_err || iobase != 0x3f0) { error_free(local_err); return 0; } if (state->floppy) { state->multiple = true; } else { state->floppy = ISA_DEVICE(obj); } return 0; } static const char * const fdc_container_path[] = { "/unattached", "/peripheral", "/peripheral-anon" }; /* * Locate the FDC at IO address 0x3f0, in order to configure the CMOS registers * and ACPI objects. */ ISADevice *pc_find_fdc0(void) { int i; Object *container; CheckFdcState state = { 0 }; for (i = 0; i < ARRAY_SIZE(fdc_container_path); i++) { container = container_get(qdev_get_machine(), fdc_container_path[i]); object_child_foreach(container, check_fdc, &state); } if (state.multiple) { error_report("warning: multiple floppy disk controllers with " "iobase=0x3f0 have been found"); error_printf("the one being picked for CMOS setup might not reflect " "your intent"); } return state.floppy; } static void pc_cmos_init_late(void *opaque) { pc_cmos_init_late_arg *arg = opaque; ISADevice *s = arg->rtc_state; int16_t cylinders; int8_t heads, sectors; int val; int i, trans; val = 0; if (ide_get_geometry(arg->idebus[0], 0, &cylinders, &heads, §ors) >= 0) { cmos_init_hd(s, 0x19, 0x1b, cylinders, heads, sectors); val |= 0xf0; } if (ide_get_geometry(arg->idebus[0], 1, &cylinders, &heads, §ors) >= 0) { cmos_init_hd(s, 0x1a, 0x24, cylinders, heads, sectors); val |= 0x0f; } rtc_set_memory(s, 0x12, val); val = 0; for (i = 0; i < 4; i++) { /* NOTE: ide_get_geometry() 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. */ if (ide_get_geometry(arg->idebus[i / 2], i % 2, &cylinders, &heads, §ors) >= 0) { trans = ide_get_bios_chs_trans(arg->idebus[i / 2], i % 2) - 1; assert((trans & ~3) == 0); val |= trans << (i * 2); } } rtc_set_memory(s, 0x39, val); pc_cmos_init_floppy(s, pc_find_fdc0()); qemu_unregister_reset(pc_cmos_init_late, opaque); } void pc_cmos_init(PCMachineState *pcms, BusState *idebus0, BusState *idebus1, ISADevice *s) { int val; static pc_cmos_init_late_arg arg; /* various important CMOS locations needed by PC/Bochs bios */ /* memory size */ /* base memory (first MiB) */ val = MIN(pcms->below_4g_mem_size / 1024, 640); rtc_set_memory(s, 0x15, val); rtc_set_memory(s, 0x16, val >> 8); /* extended memory (next 64MiB) */ if (pcms->below_4g_mem_size > 1024 * 1024) { val = (pcms->below_4g_mem_size - 1024 * 1024) / 1024; } else { val = 0; } 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); /* memory between 16MiB and 4GiB */ if (pcms->below_4g_mem_size > 16 * 1024 * 1024) { val = (pcms->below_4g_mem_size - 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); /* memory above 4GiB */ val = pcms->above_4g_mem_size / 65536; rtc_set_memory(s, 0x5b, val); rtc_set_memory(s, 0x5c, val >> 8); rtc_set_memory(s, 0x5d, val >> 16); /* set the number of CPU */ rtc_set_memory(s, 0x5f, smp_cpus - 1); object_property_add_link(OBJECT(pcms), "rtc_state", TYPE_ISA_DEVICE, (Object **)&pcms->rtc, object_property_allow_set_link, OBJ_PROP_LINK_UNREF_ON_RELEASE, &error_abort); object_property_set_link(OBJECT(pcms), OBJECT(s), "rtc_state", &error_abort); set_boot_dev(s, MACHINE(pcms)->boot_order, &error_fatal); val = 0; val |= 0x02; /* FPU is there */ val |= 0x04; /* PS/2 mouse installed */ rtc_set_memory(s, REG_EQUIPMENT_BYTE, val); /* hard drives and FDC */ arg.rtc_state = s; arg.idebus[0] = idebus0; arg.idebus[1] = idebus1; qemu_register_reset(pc_cmos_init_late, &arg); } #define TYPE_PORT92 "port92" #define PORT92(obj) OBJECT_CHECK(Port92State, (obj), TYPE_PORT92) /* port 92 stuff: could be split off */ typedef struct Port92State { ISADevice parent_obj; MemoryRegion io; uint8_t outport; qemu_irq *a20_out; } Port92State; static void port92_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) { Port92State *s = opaque; int oldval = s->outport; DPRINTF("port92: write 0x%02" PRIx64 "\n", val); s->outport = val; qemu_set_irq(*s->a20_out, (val >> 1) & 1); if ((val & 1) && !(oldval & 1)) { qemu_system_reset_request(); } } static uint64_t port92_read(void *opaque, hwaddr addr, unsigned size) { Port92State *s = opaque; uint32_t ret; ret = s->outport; DPRINTF("port92: read 0x%02x\n", ret); return ret; } static void port92_init(ISADevice *dev, qemu_irq *a20_out) { Port92State *s = PORT92(dev); s->a20_out = a20_out; } static const VMStateDescription vmstate_port92_isa = { .name = "port92", .version_id = 1, .minimum_version_id = 1, .fields = (VMStateField[]) { VMSTATE_UINT8(outport, Port92State), VMSTATE_END_OF_LIST() } }; static void port92_reset(DeviceState *d) { Port92State *s = PORT92(d); s->outport &= ~1; } static const MemoryRegionOps port92_ops = { .read = port92_read, .write = port92_write, .impl = { .min_access_size = 1, .max_access_size = 1, }, .endianness = DEVICE_LITTLE_ENDIAN, }; static void port92_initfn(Object *obj) { Port92State *s = PORT92(obj); memory_region_init_io(&s->io, OBJECT(s), &port92_ops, s, "port92", 1); s->outport = 0; } static void port92_realizefn(DeviceState *dev, Error **errp) { ISADevice *isadev = ISA_DEVICE(dev); Port92State *s = PORT92(dev); isa_register_ioport(isadev, &s->io, 0x92); } static void port92_class_initfn(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); dc->realize = port92_realizefn; dc->reset = port92_reset; dc->vmsd = &vmstate_port92_isa; /* * Reason: unlike ordinary ISA devices, this one needs additional * wiring: its A20 output line needs to be wired up by * port92_init(). */ dc->cannot_instantiate_with_device_add_yet = true; } static const TypeInfo port92_info = { .name = TYPE_PORT92, .parent = TYPE_ISA_DEVICE, .instance_size = sizeof(Port92State), .instance_init = port92_initfn, .class_init = port92_class_initfn, }; static void port92_register_types(void) { type_register_static(&port92_info); } type_init(port92_register_types) static void handle_a20_line_change(void *opaque, int irq, int level) { X86CPU *cpu = opaque; /* XXX: send to all CPUs ? */ /* XXX: add logic to handle multiple A20 line sources */ x86_cpu_set_a20(cpu, level); } int e820_add_entry(uint64_t address, uint64_t length, uint32_t type) { int index = le32_to_cpu(e820_reserve.count); struct e820_entry *entry; if (type != E820_RAM) { /* old FW_CFG_E820_TABLE entry -- reservations only */ if (index >= E820_NR_ENTRIES) { return -EBUSY; } entry = &e820_reserve.entry[index++]; entry->address = cpu_to_le64(address); entry->length = cpu_to_le64(length); entry->type = cpu_to_le32(type); e820_reserve.count = cpu_to_le32(index); } /* new "etc/e820" file -- include ram too */ e820_table = g_renew(struct e820_entry, e820_table, e820_entries + 1); e820_table[e820_entries].address = cpu_to_le64(address); e820_table[e820_entries].length = cpu_to_le64(length); e820_table[e820_entries].type = cpu_to_le32(type); e820_entries++; return e820_entries; } int e820_get_num_entries(void) { return e820_entries; } bool e820_get_entry(int idx, uint32_t type, uint64_t *address, uint64_t *length) { if (idx < e820_entries && e820_table[idx].type == cpu_to_le32(type)) { *address = le64_to_cpu(e820_table[idx].address); *length = le64_to_cpu(e820_table[idx].length); return true; } return false; } /* Enables contiguous-apic-ID mode, for compatibility */ static bool compat_apic_id_mode; void enable_compat_apic_id_mode(void) { compat_apic_id_mode = true; } /* Calculates initial APIC ID for a specific CPU index * * Currently we need to be able to calculate the APIC ID from the CPU index * alone (without requiring a CPU object), as the QEMU<->Seabios interfaces have * no concept of "CPU index", and the NUMA tables on fw_cfg need the APIC ID of * all CPUs up to max_cpus. */ static uint32_t x86_cpu_apic_id_from_index(unsigned int cpu_index) { uint32_t correct_id; static bool warned; correct_id = x86_apicid_from_cpu_idx(smp_cores, smp_threads, cpu_index); if (compat_apic_id_mode) { if (cpu_index != correct_id && !warned && !qtest_enabled()) { error_report("APIC IDs set in compatibility mode, " "CPU topology won't match the configuration"); warned = true; } return cpu_index; } else { return correct_id; } } static void pc_build_smbios(FWCfgState *fw_cfg) { uint8_t *smbios_tables, *smbios_anchor; size_t smbios_tables_len, smbios_anchor_len; struct smbios_phys_mem_area *mem_array; unsigned i, array_count; smbios_tables = smbios_get_table_legacy(&smbios_tables_len); if (smbios_tables) { fw_cfg_add_bytes(fw_cfg, FW_CFG_SMBIOS_ENTRIES, smbios_tables, smbios_tables_len); } /* build the array of physical mem area from e820 table */ mem_array = g_malloc0(sizeof(*mem_array) * e820_get_num_entries()); for (i = 0, array_count = 0; i < e820_get_num_entries(); i++) { uint64_t addr, len; if (e820_get_entry(i, E820_RAM, &addr, &len)) { mem_array[array_count].address = addr; mem_array[array_count].length = len; array_count++; } } smbios_get_tables(mem_array, array_count, &smbios_tables, &smbios_tables_len, &smbios_anchor, &smbios_anchor_len); g_free(mem_array); if (smbios_anchor) { fw_cfg_add_file(fw_cfg, "etc/smbios/smbios-tables", smbios_tables, smbios_tables_len); fw_cfg_add_file(fw_cfg, "etc/smbios/smbios-anchor", smbios_anchor, smbios_anchor_len); } } static FWCfgState *bochs_bios_init(AddressSpace *as, PCMachineState *pcms) { FWCfgState *fw_cfg; uint64_t *numa_fw_cfg; int i, j; fw_cfg = fw_cfg_init_io_dma(FW_CFG_IO_BASE, FW_CFG_IO_BASE + 4, as); /* FW_CFG_MAX_CPUS is a bit confusing/problematic on x86: * * SeaBIOS needs FW_CFG_MAX_CPUS for CPU hotplug, but the CPU hotplug * QEMU<->SeaBIOS interface is not based on the "CPU index", but on the APIC * ID of hotplugged CPUs[1]. This means that FW_CFG_MAX_CPUS is not the * "maximum number of CPUs", but the "limit to the APIC ID values SeaBIOS * may see". * * So, this means we must not use max_cpus, here, but the maximum possible * APIC ID value, plus one. * * [1] The only kind of "CPU identifier" used between SeaBIOS and QEMU is * the APIC ID, not the "CPU index" */ fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)pcms->apic_id_limit); fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size); fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, acpi_tables, acpi_tables_len); fw_cfg_add_i32(fw_cfg, FW_CFG_IRQ0_OVERRIDE, kvm_allows_irq0_override()); fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE, &e820_reserve, sizeof(e820_reserve)); fw_cfg_add_file(fw_cfg, "etc/e820", e820_table, sizeof(struct e820_entry) * e820_entries); fw_cfg_add_bytes(fw_cfg, FW_CFG_HPET, &hpet_cfg, sizeof(hpet_cfg)); /* 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 = g_new0(uint64_t, 1 + pcms->apic_id_limit + nb_numa_nodes); numa_fw_cfg[0] = cpu_to_le64(nb_numa_nodes); for (i = 0; i < max_cpus; i++) { unsigned int apic_id = x86_cpu_apic_id_from_index(i); assert(apic_id < pcms->apic_id_limit); for (j = 0; j < nb_numa_nodes; j++) { if (test_bit(i, numa_info[j].node_cpu)) { numa_fw_cfg[apic_id + 1] = cpu_to_le64(j); break; } } } for (i = 0; i < nb_numa_nodes; i++) { numa_fw_cfg[pcms->apic_id_limit + 1 + i] = cpu_to_le64(numa_info[i].node_mem); } fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, numa_fw_cfg, (1 + pcms->apic_id_limit + nb_numa_nodes) * sizeof(*numa_fw_cfg)); 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(PCMachineState *pcms, FWCfgState *fw_cfg) { 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; hwaddr real_addr, prot_addr, cmdline_addr, initrd_addr = 0; FILE *f; char *vmode; MachineState *machine = MACHINE(pcms); PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); const char *kernel_filename = machine->kernel_filename; const char *initrd_filename = machine->initrd_filename; const char *kernel_cmdline = machine->kernel_cmdline; /* 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 >= pcms->below_4g_mem_size - pcmc->acpi_data_size) { initrd_max = pcms->below_4g_mem_size - pcmc->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_string(fw_cfg, FW_CFG_CMDLINE_DATA, kernel_cmdline); 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: %s\n", initrd_filename, strerror(errno)); exit(1); } initrd_addr = (initrd_max-initrd_size) & ~4095; initrd_data = g_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; if (setup_size > kernel_size) { fprintf(stderr, "qemu: invalid kernel header\n"); exit(1); } kernel_size -= setup_size; setup = g_malloc(setup_size); kernel = g_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].name = "linuxboot.bin"; option_rom[nb_option_roms].bootindex = 0; 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 }; void pc_init_ne2k_isa(ISABus *bus, NICInfo *nd) { static int nb_ne2k = 0; if (nb_ne2k == NE2000_NB_MAX) return; isa_ne2000_init(bus, ne2000_io[nb_ne2k], ne2000_irq[nb_ne2k], nd); nb_ne2k++; } DeviceState *cpu_get_current_apic(void) { if (current_cpu) { X86CPU *cpu = X86_CPU(current_cpu); return cpu->apic_state; } else { return NULL; } } void pc_acpi_smi_interrupt(void *opaque, int irq, int level) { X86CPU *cpu = opaque; if (level) { cpu_interrupt(CPU(cpu), CPU_INTERRUPT_SMI); } } static X86CPU *pc_new_cpu(const char *cpu_model, int64_t apic_id, Error **errp) { X86CPU *cpu = NULL; Error *local_err = NULL; cpu = cpu_x86_create(cpu_model, &local_err); if (local_err != NULL) { goto out; } object_property_set_int(OBJECT(cpu), apic_id, "apic-id", &local_err); object_property_set_bool(OBJECT(cpu), true, "realized", &local_err); out: if (local_err) { error_propagate(errp, local_err); object_unref(OBJECT(cpu)); cpu = NULL; } return cpu; } void pc_hot_add_cpu(const int64_t id, Error **errp) { X86CPU *cpu; MachineState *machine = MACHINE(qdev_get_machine()); int64_t apic_id = x86_cpu_apic_id_from_index(id); Error *local_err = NULL; if (id < 0) { error_setg(errp, "Invalid CPU id: %" PRIi64, id); return; } if (cpu_exists(apic_id)) { error_setg(errp, "Unable to add CPU: %" PRIi64 ", it already exists", id); return; } if (id >= max_cpus) { error_setg(errp, "Unable to add CPU: %" PRIi64 ", max allowed: %d", id, max_cpus - 1); return; } if (apic_id >= ACPI_CPU_HOTPLUG_ID_LIMIT) { error_setg(errp, "Unable to add CPU: %" PRIi64 ", resulting APIC ID (%" PRIi64 ") is too large", id, apic_id); return; } cpu = pc_new_cpu(machine->cpu_model, apic_id, &local_err); if (local_err) { error_propagate(errp, local_err); return; } object_unref(OBJECT(cpu)); } void pc_cpus_init(PCMachineState *pcms) { int i; X86CPU *cpu = NULL; MachineState *machine = MACHINE(pcms); /* init CPUs */ if (machine->cpu_model == NULL) { #ifdef TARGET_X86_64 machine->cpu_model = "qemu64"; #else machine->cpu_model = "qemu32"; #endif } /* Calculates the limit to CPU APIC ID values * * Limit for the APIC ID value, so that all * CPU APIC IDs are < pcms->apic_id_limit. * * This is used for FW_CFG_MAX_CPUS. See comments on bochs_bios_init(). */ pcms->apic_id_limit = x86_cpu_apic_id_from_index(max_cpus - 1) + 1; if (pcms->apic_id_limit > ACPI_CPU_HOTPLUG_ID_LIMIT) { error_report("max_cpus is too large. APIC ID of last CPU is %u", pcms->apic_id_limit - 1); exit(1); } pcms->possible_cpus = g_malloc0(sizeof(CPUArchIdList) + sizeof(CPUArchId) * max_cpus); for (i = 0; i < max_cpus; i++) { pcms->possible_cpus->cpus[i].arch_id = x86_cpu_apic_id_from_index(i); pcms->possible_cpus->len++; if (i < smp_cpus) { cpu = pc_new_cpu(machine->cpu_model, x86_cpu_apic_id_from_index(i), &error_fatal); pcms->possible_cpus->cpus[i].cpu = CPU(cpu); object_unref(OBJECT(cpu)); } } /* tell smbios about cpuid version and features */ smbios_set_cpuid(cpu->env.cpuid_version, cpu->env.features[FEAT_1_EDX]); } static void pc_machine_done(Notifier *notifier, void *data) { PCMachineState *pcms = container_of(notifier, PCMachineState, machine_done); PCIBus *bus = pcms->bus; if (bus) { int extra_hosts = 0; QLIST_FOREACH(bus, &bus->child, sibling) { /* look for expander root buses */ if (pci_bus_is_root(bus)) { extra_hosts++; } } if (extra_hosts && pcms->fw_cfg) { uint64_t *val = g_malloc(sizeof(*val)); *val = cpu_to_le64(extra_hosts); fw_cfg_add_file(pcms->fw_cfg, "etc/extra-pci-roots", val, sizeof(*val)); } } acpi_setup(); if (pcms->fw_cfg) { pc_build_smbios(pcms->fw_cfg); } } void pc_guest_info_init(PCMachineState *pcms) { int i; pcms->apic_xrupt_override = kvm_allows_irq0_override(); pcms->numa_nodes = nb_numa_nodes; pcms->node_mem = g_malloc0(pcms->numa_nodes * sizeof *pcms->node_mem); for (i = 0; i < nb_numa_nodes; i++) { pcms->node_mem[i] = numa_info[i].node_mem; } pcms->machine_done.notify = pc_machine_done; qemu_add_machine_init_done_notifier(&pcms->machine_done); } /* setup pci memory address space mapping into system address space */ void pc_pci_as_mapping_init(Object *owner, MemoryRegion *system_memory, MemoryRegion *pci_address_space) { /* Set to lower priority than RAM */ memory_region_add_subregion_overlap(system_memory, 0x0, pci_address_space, -1); } void pc_acpi_init(const char *default_dsdt) { char *filename; if (acpi_tables != NULL) { /* manually set via -acpitable, leave it alone */ return; } filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, default_dsdt); if (filename == NULL) { fprintf(stderr, "WARNING: failed to find %s\n", default_dsdt); } else { QemuOpts *opts = qemu_opts_create(qemu_find_opts("acpi"), NULL, 0, &error_abort); Error *err = NULL; qemu_opt_set(opts, "file", filename, &error_abort); acpi_table_add_builtin(opts, &err); if (err) { error_reportf_err(err, "WARNING: failed to load %s: ", filename); } g_free(filename); } } void xen_load_linux(PCMachineState *pcms) { int i; FWCfgState *fw_cfg; assert(MACHINE(pcms)->kernel_filename != NULL); fw_cfg = fw_cfg_init_io(FW_CFG_IO_BASE); rom_set_fw(fw_cfg); load_linux(pcms, fw_cfg); for (i = 0; i < nb_option_roms; i++) { assert(!strcmp(option_rom[i].name, "linuxboot.bin") || !strcmp(option_rom[i].name, "multiboot.bin")); rom_add_option(option_rom[i].name, option_rom[i].bootindex); } pcms->fw_cfg = fw_cfg; } void pc_memory_init(PCMachineState *pcms, MemoryRegion *system_memory, MemoryRegion *rom_memory, MemoryRegion **ram_memory) { int linux_boot, i; MemoryRegion *ram, *option_rom_mr; MemoryRegion *ram_below_4g, *ram_above_4g; FWCfgState *fw_cfg; MachineState *machine = MACHINE(pcms); PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); assert(machine->ram_size == pcms->below_4g_mem_size + pcms->above_4g_mem_size); linux_boot = (machine->kernel_filename != NULL); /* Allocate RAM. We allocate it as a single memory region and use * aliases to address portions of it, mostly for backwards compatibility * with older qemus that used qemu_ram_alloc(). */ ram = g_malloc(sizeof(*ram)); memory_region_allocate_system_memory(ram, NULL, "pc.ram", machine->ram_size); *ram_memory = ram; ram_below_4g = g_malloc(sizeof(*ram_below_4g)); memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", ram, 0, pcms->below_4g_mem_size); memory_region_add_subregion(system_memory, 0, ram_below_4g); e820_add_entry(0, pcms->below_4g_mem_size, E820_RAM); if (pcms->above_4g_mem_size > 0) { ram_above_4g = g_malloc(sizeof(*ram_above_4g)); memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g", ram, pcms->below_4g_mem_size, pcms->above_4g_mem_size); memory_region_add_subregion(system_memory, 0x100000000ULL, ram_above_4g); e820_add_entry(0x100000000ULL, pcms->above_4g_mem_size, E820_RAM); } if (!pcmc->has_reserved_memory && (machine->ram_slots || (machine->maxram_size > machine->ram_size))) { MachineClass *mc = MACHINE_GET_CLASS(machine); error_report("\"-memory 'slots|maxmem'\" is not supported by: %s", mc->name); exit(EXIT_FAILURE); } /* initialize hotplug memory address space */ if (pcmc->has_reserved_memory && (machine->ram_size < machine->maxram_size)) { ram_addr_t hotplug_mem_size = machine->maxram_size - machine->ram_size; if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) { error_report("unsupported amount of memory slots: %"PRIu64, machine->ram_slots); exit(EXIT_FAILURE); } if (QEMU_ALIGN_UP(machine->maxram_size, TARGET_PAGE_SIZE) != machine->maxram_size) { error_report("maximum memory size must by aligned to multiple of " "%d bytes", TARGET_PAGE_SIZE); exit(EXIT_FAILURE); } pcms->hotplug_memory.base = ROUND_UP(0x100000000ULL + pcms->above_4g_mem_size, 1ULL << 30); if (pcmc->enforce_aligned_dimm) { /* size hotplug region assuming 1G page max alignment per slot */ hotplug_mem_size += (1ULL << 30) * machine->ram_slots; } if ((pcms->hotplug_memory.base + hotplug_mem_size) < hotplug_mem_size) { error_report("unsupported amount of maximum memory: " RAM_ADDR_FMT, machine->maxram_size); exit(EXIT_FAILURE); } memory_region_init(&pcms->hotplug_memory.mr, OBJECT(pcms), "hotplug-memory", hotplug_mem_size); memory_region_add_subregion(system_memory, pcms->hotplug_memory.base, &pcms->hotplug_memory.mr); } /* Initialize PC system firmware */ pc_system_firmware_init(rom_memory, !pcmc->pci_enabled); option_rom_mr = g_malloc(sizeof(*option_rom_mr)); memory_region_init_ram(option_rom_mr, NULL, "pc.rom", PC_ROM_SIZE, &error_fatal); vmstate_register_ram_global(option_rom_mr); memory_region_add_subregion_overlap(rom_memory, PC_ROM_MIN_VGA, option_rom_mr, 1); fw_cfg = bochs_bios_init(&address_space_memory, pcms); rom_set_fw(fw_cfg); if (pcmc->has_reserved_memory && pcms->hotplug_memory.base) { uint64_t *val = g_malloc(sizeof(*val)); PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); uint64_t res_mem_end = pcms->hotplug_memory.base; if (!pcmc->broken_reserved_end) { res_mem_end += memory_region_size(&pcms->hotplug_memory.mr); } *val = cpu_to_le64(ROUND_UP(res_mem_end, 0x1ULL << 30)); fw_cfg_add_file(fw_cfg, "etc/reserved-memory-end", val, sizeof(*val)); } if (linux_boot) { load_linux(pcms, fw_cfg); } for (i = 0; i < nb_option_roms; i++) { rom_add_option(option_rom[i].name, option_rom[i].bootindex); } pcms->fw_cfg = fw_cfg; } qemu_irq pc_allocate_cpu_irq(void) { return qemu_allocate_irq(pic_irq_request, NULL, 0); } DeviceState *pc_vga_init(ISABus *isa_bus, PCIBus *pci_bus) { DeviceState *dev = NULL; rom_set_order_override(FW_CFG_ORDER_OVERRIDE_VGA); if (pci_bus) { PCIDevice *pcidev = pci_vga_init(pci_bus); dev = pcidev ? &pcidev->qdev : NULL; } else if (isa_bus) { ISADevice *isadev = isa_vga_init(isa_bus); dev = isadev ? DEVICE(isadev) : NULL; } rom_reset_order_override(); return dev; } static const MemoryRegionOps ioport80_io_ops = { .write = ioport80_write, .read = ioport80_read, .endianness = DEVICE_NATIVE_ENDIAN, .impl = { .min_access_size = 1, .max_access_size = 1, }, }; static const MemoryRegionOps ioportF0_io_ops = { .write = ioportF0_write, .read = ioportF0_read, .endianness = DEVICE_NATIVE_ENDIAN, .impl = { .min_access_size = 1, .max_access_size = 1, }, }; void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi, ISADevice **rtc_state, bool create_fdctrl, bool no_vmport, uint32_t hpet_irqs) { int i; DriveInfo *fd[MAX_FD]; DeviceState *hpet = NULL; int pit_isa_irq = 0; qemu_irq pit_alt_irq = NULL; qemu_irq rtc_irq = NULL; qemu_irq *a20_line; ISADevice *i8042, *port92, *vmmouse, *pit = NULL; MemoryRegion *ioport80_io = g_new(MemoryRegion, 1); MemoryRegion *ioportF0_io = g_new(MemoryRegion, 1); memory_region_init_io(ioport80_io, NULL, &ioport80_io_ops, NULL, "ioport80", 1); memory_region_add_subregion(isa_bus->address_space_io, 0x80, ioport80_io); memory_region_init_io(ioportF0_io, NULL, &ioportF0_io_ops, NULL, "ioportF0", 1); memory_region_add_subregion(isa_bus->address_space_io, 0xf0, ioportF0_io); /* * Check if an HPET shall be created. * * Without KVM_CAP_PIT_STATE2, we cannot switch off the in-kernel PIT * when the HPET wants to take over. Thus we have to disable the latter. */ if (!no_hpet && (!kvm_irqchip_in_kernel() || kvm_has_pit_state2())) { /* In order to set property, here not using sysbus_try_create_simple */ hpet = qdev_try_create(NULL, TYPE_HPET); if (hpet) { /* For pc-piix-*, hpet's intcap is always IRQ2. For pc-q35-1.7 * and earlier, use IRQ2 for compat. Otherwise, use IRQ16~23, * IRQ8 and IRQ2. */ uint8_t compat = object_property_get_int(OBJECT(hpet), HPET_INTCAP, NULL); if (!compat) { qdev_prop_set_uint32(hpet, HPET_INTCAP, hpet_irqs); } qdev_init_nofail(hpet); sysbus_mmio_map(SYS_BUS_DEVICE(hpet), 0, HPET_BASE); for (i = 0; i < GSI_NUM_PINS; i++) { sysbus_connect_irq(SYS_BUS_DEVICE(hpet), i, gsi[i]); } pit_isa_irq = -1; pit_alt_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_PIT_INT); rtc_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_RTC_INT); } } *rtc_state = rtc_init(isa_bus, 2000, rtc_irq); qemu_register_boot_set(pc_boot_set, *rtc_state); if (!xen_enabled()) { if (kvm_pit_in_kernel()) { pit = kvm_pit_init(isa_bus, 0x40); } else { pit = pit_init(isa_bus, 0x40, pit_isa_irq, pit_alt_irq); } if (hpet) { /* connect PIT to output control line of the HPET */ qdev_connect_gpio_out(hpet, 0, qdev_get_gpio_in(DEVICE(pit), 0)); } pcspk_init(isa_bus, pit); } serial_hds_isa_init(isa_bus, MAX_SERIAL_PORTS); parallel_hds_isa_init(isa_bus, MAX_PARALLEL_PORTS); a20_line = qemu_allocate_irqs(handle_a20_line_change, first_cpu, 2); i8042 = isa_create_simple(isa_bus, "i8042"); i8042_setup_a20_line(i8042, &a20_line[0]); if (!no_vmport) { vmport_init(isa_bus); vmmouse = isa_try_create(isa_bus, "vmmouse"); } else { vmmouse = NULL; } if (vmmouse) { DeviceState *dev = DEVICE(vmmouse); qdev_prop_set_ptr(dev, "ps2_mouse", i8042); qdev_init_nofail(dev); } port92 = isa_create_simple(isa_bus, "port92"); port92_init(port92, &a20_line[1]); DMA_init(isa_bus, 0); for(i = 0; i < MAX_FD; i++) { fd[i] = drive_get(IF_FLOPPY, 0, i); create_fdctrl |= !!fd[i]; } if (create_fdctrl) { fdctrl_init_isa(isa_bus, fd); } } void pc_nic_init(ISABus *isa_bus, PCIBus *pci_bus) { int i; rom_set_order_override(FW_CFG_ORDER_OVERRIDE_NIC); for (i = 0; i < nb_nics; i++) { NICInfo *nd = &nd_table[i]; if (!pci_bus || (nd->model && strcmp(nd->model, "ne2k_isa") == 0)) { pc_init_ne2k_isa(isa_bus, nd); } else { pci_nic_init_nofail(nd, pci_bus, "e1000", NULL); } } rom_reset_order_override(); } 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"); } } void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name) { DeviceState *dev; SysBusDevice *d; unsigned int i; if (kvm_ioapic_in_kernel()) { dev = qdev_create(NULL, "kvm-ioapic"); } else { dev = qdev_create(NULL, "ioapic"); } if (parent_name) { object_property_add_child(object_resolve_path(parent_name, NULL), "ioapic", OBJECT(dev), NULL); } qdev_init_nofail(dev); d = SYS_BUS_DEVICE(dev); sysbus_mmio_map(d, 0, IO_APIC_DEFAULT_ADDRESS); for (i = 0; i < IOAPIC_NUM_PINS; i++) { gsi_state->ioapic_irq[i] = qdev_get_gpio_in(dev, i); } } static void pc_dimm_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { HotplugHandlerClass *hhc; Error *local_err = NULL; PCMachineState *pcms = PC_MACHINE(hotplug_dev); PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); PCDIMMDevice *dimm = PC_DIMM(dev); PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm); MemoryRegion *mr = ddc->get_memory_region(dimm); uint64_t align = TARGET_PAGE_SIZE; if (memory_region_get_alignment(mr) && pcmc->enforce_aligned_dimm) { align = memory_region_get_alignment(mr); } if (!pcms->acpi_dev) { error_setg(&local_err, "memory hotplug is not enabled: missing acpi device"); goto out; } pc_dimm_memory_plug(dev, &pcms->hotplug_memory, mr, align, &local_err); if (local_err) { goto out; } hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc->plug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &error_abort); out: error_propagate(errp, local_err); } static void pc_dimm_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { HotplugHandlerClass *hhc; Error *local_err = NULL; PCMachineState *pcms = PC_MACHINE(hotplug_dev); if (!pcms->acpi_dev) { error_setg(&local_err, "memory hotplug is not enabled: missing acpi device"); goto out; } hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc->unplug_request(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); out: error_propagate(errp, local_err); } static void pc_dimm_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { PCMachineState *pcms = PC_MACHINE(hotplug_dev); PCDIMMDevice *dimm = PC_DIMM(dev); PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm); MemoryRegion *mr = ddc->get_memory_region(dimm); HotplugHandlerClass *hhc; Error *local_err = NULL; hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc->unplug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); if (local_err) { goto out; } pc_dimm_memory_unplug(dev, &pcms->hotplug_memory, mr); object_unparent(OBJECT(dev)); out: error_propagate(errp, local_err); } static int pc_apic_cmp(const void *a, const void *b) { CPUArchId *apic_a = (CPUArchId *)a; CPUArchId *apic_b = (CPUArchId *)b; return apic_a->arch_id - apic_b->arch_id; } static void pc_cpu_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { CPUClass *cc = CPU_GET_CLASS(dev); CPUArchId apic_id, *found_cpu; HotplugHandlerClass *hhc; Error *local_err = NULL; PCMachineState *pcms = PC_MACHINE(hotplug_dev); if (!dev->hotplugged) { goto out; } if (!pcms->acpi_dev) { error_setg(&local_err, "cpu hotplug is not enabled: missing acpi device"); goto out; } hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc->plug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); if (local_err) { goto out; } /* increment the number of CPUs */ rtc_set_memory(pcms->rtc, 0x5f, rtc_get_memory(pcms->rtc, 0x5f) + 1); apic_id.arch_id = cc->get_arch_id(CPU(dev)); found_cpu = bsearch(&apic_id, pcms->possible_cpus->cpus, pcms->possible_cpus->len, sizeof(*pcms->possible_cpus->cpus), pc_apic_cmp); assert(found_cpu); found_cpu->cpu = CPU(dev); out: error_propagate(errp, local_err); } static void pc_cpu_unplug_request_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { HotplugHandlerClass *hhc; Error *local_err = NULL; PCMachineState *pcms = PC_MACHINE(hotplug_dev); hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc->unplug_request(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); if (local_err) { goto out; } out: error_propagate(errp, local_err); } static void pc_cpu_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { HotplugHandlerClass *hhc; Error *local_err = NULL; PCMachineState *pcms = PC_MACHINE(hotplug_dev); hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc->unplug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); if (local_err) { goto out; } /* * TODO: enable unplug once generic CPU remove bits land * for now guest will be able to eject CPU ACPI wise but * it will come back again on machine reset. */ /* object_unparent(OBJECT(dev)); */ out: error_propagate(errp, local_err); } static void pc_machine_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { pc_dimm_plug(hotplug_dev, dev, errp); } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { pc_cpu_plug(hotplug_dev, dev, errp); } } static void pc_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { pc_dimm_unplug_request(hotplug_dev, dev, errp); } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { pc_cpu_unplug_request_cb(hotplug_dev, dev, errp); } else { error_setg(errp, "acpi: device unplug request for not supported device" " type: %s", object_get_typename(OBJECT(dev))); } } static void pc_machine_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { pc_dimm_unplug(hotplug_dev, dev, errp); } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { pc_cpu_unplug_cb(hotplug_dev, dev, errp); } else { error_setg(errp, "acpi: device unplug for not supported device" " type: %s", object_get_typename(OBJECT(dev))); } } static HotplugHandler *pc_get_hotpug_handler(MachineState *machine, DeviceState *dev) { PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(machine); if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) || object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { return HOTPLUG_HANDLER(machine); } return pcmc->get_hotplug_handler ? pcmc->get_hotplug_handler(machine, dev) : NULL; } static void pc_machine_get_hotplug_memory_region_size(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { PCMachineState *pcms = PC_MACHINE(obj); int64_t value = memory_region_size(&pcms->hotplug_memory.mr); visit_type_int(v, name, &value, errp); } static void pc_machine_get_max_ram_below_4g(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { PCMachineState *pcms = PC_MACHINE(obj); uint64_t value = pcms->max_ram_below_4g; visit_type_size(v, name, &value, errp); } static void pc_machine_set_max_ram_below_4g(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { PCMachineState *pcms = PC_MACHINE(obj); Error *error = NULL; uint64_t value; visit_type_size(v, name, &value, &error); if (error) { error_propagate(errp, error); return; } if (value > (1ULL << 32)) { error_setg(&error, "Machine option 'max-ram-below-4g=%"PRIu64 "' expects size less than or equal to 4G", value); error_propagate(errp, error); return; } if (value < (1ULL << 20)) { error_report("Warning: small max_ram_below_4g(%"PRIu64 ") less than 1M. BIOS may not work..", value); } pcms->max_ram_below_4g = value; } static void pc_machine_get_vmport(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { PCMachineState *pcms = PC_MACHINE(obj); OnOffAuto vmport = pcms->vmport; visit_type_OnOffAuto(v, name, &vmport, errp); } static void pc_machine_set_vmport(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { PCMachineState *pcms = PC_MACHINE(obj); visit_type_OnOffAuto(v, name, &pcms->vmport, errp); } bool pc_machine_is_smm_enabled(PCMachineState *pcms) { bool smm_available = false; if (pcms->smm == ON_OFF_AUTO_OFF) { return false; } if (tcg_enabled() || qtest_enabled()) { smm_available = true; } else if (kvm_enabled()) { smm_available = kvm_has_smm(); } if (smm_available) { return true; } if (pcms->smm == ON_OFF_AUTO_ON) { error_report("System Management Mode not supported by this hypervisor."); exit(1); } return false; } static void pc_machine_get_smm(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { PCMachineState *pcms = PC_MACHINE(obj); OnOffAuto smm = pcms->smm; visit_type_OnOffAuto(v, name, &smm, errp); } static void pc_machine_set_smm(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { PCMachineState *pcms = PC_MACHINE(obj); visit_type_OnOffAuto(v, name, &pcms->smm, errp); } static bool pc_machine_get_nvdimm(Object *obj, Error **errp) { PCMachineState *pcms = PC_MACHINE(obj); return pcms->acpi_nvdimm_state.is_enabled; } static void pc_machine_set_nvdimm(Object *obj, bool value, Error **errp) { PCMachineState *pcms = PC_MACHINE(obj); pcms->acpi_nvdimm_state.is_enabled = value; } static void pc_machine_initfn(Object *obj) { PCMachineState *pcms = PC_MACHINE(obj); object_property_add(obj, PC_MACHINE_MEMHP_REGION_SIZE, "int", pc_machine_get_hotplug_memory_region_size, NULL, NULL, NULL, &error_abort); pcms->max_ram_below_4g = 0xe0000000; /* 3.5G */ object_property_add(obj, PC_MACHINE_MAX_RAM_BELOW_4G, "size", pc_machine_get_max_ram_below_4g, pc_machine_set_max_ram_below_4g, NULL, NULL, &error_abort); object_property_set_description(obj, PC_MACHINE_MAX_RAM_BELOW_4G, "Maximum ram below the 4G boundary (32bit boundary)", &error_abort); pcms->smm = ON_OFF_AUTO_AUTO; object_property_add(obj, PC_MACHINE_SMM, "OnOffAuto", pc_machine_get_smm, pc_machine_set_smm, NULL, NULL, &error_abort); object_property_set_description(obj, PC_MACHINE_SMM, "Enable SMM (pc & q35)", &error_abort); pcms->vmport = ON_OFF_AUTO_AUTO; object_property_add(obj, PC_MACHINE_VMPORT, "OnOffAuto", pc_machine_get_vmport, pc_machine_set_vmport, NULL, NULL, &error_abort); object_property_set_description(obj, PC_MACHINE_VMPORT, "Enable vmport (pc & q35)", &error_abort); /* nvdimm is disabled on default. */ pcms->acpi_nvdimm_state.is_enabled = false; object_property_add_bool(obj, PC_MACHINE_NVDIMM, pc_machine_get_nvdimm, pc_machine_set_nvdimm, &error_abort); } static void pc_machine_reset(void) { CPUState *cs; X86CPU *cpu; qemu_devices_reset(); /* Reset APIC after devices have been reset to cancel * any changes that qemu_devices_reset() might have done. */ CPU_FOREACH(cs) { cpu = X86_CPU(cs); if (cpu->apic_state) { device_reset(cpu->apic_state); } } } static unsigned pc_cpu_index_to_socket_id(unsigned cpu_index) { X86CPUTopoInfo topo; x86_topo_ids_from_idx(smp_cores, smp_threads, cpu_index, &topo); return topo.pkg_id; } static CPUArchIdList *pc_possible_cpu_arch_ids(MachineState *machine) { PCMachineState *pcms = PC_MACHINE(machine); int len = sizeof(CPUArchIdList) + sizeof(CPUArchId) * (pcms->possible_cpus->len); CPUArchIdList *list = g_malloc(len); memcpy(list, pcms->possible_cpus, len); return list; } static void x86_nmi(NMIState *n, int cpu_index, Error **errp) { /* cpu index isn't used */ CPUState *cs; CPU_FOREACH(cs) { X86CPU *cpu = X86_CPU(cs); if (!cpu->apic_state) { cpu_interrupt(cs, CPU_INTERRUPT_NMI); } else { apic_deliver_nmi(cpu->apic_state); } } } static void pc_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc = MACHINE_CLASS(oc); PCMachineClass *pcmc = PC_MACHINE_CLASS(oc); HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); NMIClass *nc = NMI_CLASS(oc); pcmc->get_hotplug_handler = mc->get_hotplug_handler; pcmc->pci_enabled = true; pcmc->has_acpi_build = true; pcmc->rsdp_in_ram = true; pcmc->smbios_defaults = true; pcmc->smbios_uuid_encoded = true; pcmc->gigabyte_align = true; pcmc->has_reserved_memory = true; pcmc->kvmclock_enabled = true; pcmc->enforce_aligned_dimm = true; /* BIOS ACPI tables: 128K. Other BIOS datastructures: less than 4K reported * to be used at the moment, 32K should be enough for a while. */ pcmc->acpi_data_size = 0x20000 + 0x8000; pcmc->save_tsc_khz = true; mc->get_hotplug_handler = pc_get_hotpug_handler; mc->cpu_index_to_socket_id = pc_cpu_index_to_socket_id; mc->possible_cpu_arch_ids = pc_possible_cpu_arch_ids; mc->default_boot_order = "cad"; mc->hot_add_cpu = pc_hot_add_cpu; mc->max_cpus = 255; mc->reset = pc_machine_reset; hc->plug = pc_machine_device_plug_cb; hc->unplug_request = pc_machine_device_unplug_request_cb; hc->unplug = pc_machine_device_unplug_cb; nc->nmi_monitor_handler = x86_nmi; } static const TypeInfo pc_machine_info = { .name = TYPE_PC_MACHINE, .parent = TYPE_MACHINE, .abstract = true, .instance_size = sizeof(PCMachineState), .instance_init = pc_machine_initfn, .class_size = sizeof(PCMachineClass), .class_init = pc_machine_class_init, .interfaces = (InterfaceInfo[]) { { TYPE_HOTPLUG_HANDLER }, { TYPE_NMI }, { } }, }; static void pc_machine_register_types(void) { type_register_static(&pc_machine_info); } type_init(pc_machine_register_types)