qemu-e2k/hw/i386/pc_q35.c

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/*
* Q35 chipset based pc system emulator
*
* Copyright (c) 2003-2004 Fabrice Bellard
* Copyright (c) 2009, 2010
* Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
* Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
*
* This is based on pc.c, but heavily modified.
*
* 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/hw.h"
#include "hw/loader.h"
#include "sysemu/arch_init.h"
#include "hw/i2c/smbus.h"
#include "hw/boards.h"
#include "hw/timer/mc146818rtc.h"
#include "hw/xen/xen.h"
#include "sysemu/kvm.h"
#include "hw/kvm/clock.h"
#include "hw/pci-host/q35.h"
#include "exec/address-spaces.h"
#include "hw/i386/ich9.h"
#include "hw/i386/smbios.h"
#include "hw/ide/pci.h"
#include "hw/ide/ahci.h"
#include "hw/usb.h"
#include "hw/cpu/icc_bus.h"
#include "qemu/error-report.h"
/* ICH9 AHCI has 6 ports */
#define MAX_SATA_PORTS 6
i386: ACPI table generation code from seabios This adds C code for generating ACPI tables at runtime, imported from seabios git tree commit 51684b7ced75fb76776e8ee84833fcfb6ecf12dd Although ACPI tables come from a system BIOS on real hw, it makes sense that the ACPI tables are coupled with the virtual machine, since they have to abstract the x86 machine to the OS's. This is widely desired as a way to avoid the churn and proliferation of QEMU-specific interfaces associated with ACPI tables in bios code. Notes: As BIOS can reprogram devices prior to loading ACPI tables, we pre-format ACPI tables but defer loading hardware configuration there until tables are loaded. The code structure was intentionally kept as close to the seabios original as possible, to simplify comparison and making sure we didn't lose anything in translation. Minor code duplication results, to help ensure there are no functional regressions, I think it's better to merge it like this and do more code changes in follow-up patches. Cross-version compatibility concerns have been addressed: ACPI tables are exposed to guest as FW_CFG entries. When running with -M 1.5 and older, this patch disables ACPI table generation, and doesn't expose ACPI tables to guest. As table content is likely to change over time, the following measures are taken to simplify cross-version migration: - All tables besides the RSDP are packed in a single FW CFG entry. This entry size is currently 23K. We round it up to 64K to avoid too much churn there. - Tables are placed in special ROM blob (not mapped into guest memory) which is automatically migrated together with the guest, same as BIOS code. - Offsets where hardware configuration is loaded in ACPI tables are also migrated, this is in case future ACPI changes make us rearrange the tables in memory. This patch reuses some code from SeaBIOS, which was originally under LGPLv2 and then relicensed to GPLv3 or LGPLv3, in QEMU under GPLv2+. This relicensing has been acked by all contributors that had contributed to the code since the v2->v3 relicense. ACKs approving the v2+ relicensing are listed below. The list might include ACKs from people not holding copyright on any parts of the reused code, but it's better to err on the side of caution and include them. Affected SeaBIOS files (GPLv2+ license headers added) <http://thread.gmane.org/gmane.comp.bios.coreboot.seabios/5949>: src/acpi-dsdt-cpu-hotplug.dsl src/acpi-dsdt-dbug.dsl src/acpi-dsdt-hpet.dsl src/acpi-dsdt-isa.dsl src/acpi-dsdt-pci-crs.dsl src/acpi.c src/acpi.h src/ssdt-misc.dsl src/ssdt-pcihp.dsl src/ssdt-proc.dsl tools/acpi_extract.py tools/acpi_extract_preprocess.py Each one of the listed people agreed to the following: > If you allow the use of your contribution in QEMU under the > terms of GPLv2 or later as proposed by this patch, > please respond to this mail including the line: > > Acked-by: Name <email address> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Jason Baron <jbaron@akamai.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Gleb Natapov <gleb@redhat.com> Acked-by: Marcelo Tosatti <mtosatti@redhat.com> Acked-by: Dave Frodin <dave.frodin@se-eng.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Kevin O'Connor <kevin@koconnor.net> Acked-by: Laszlo Ersek <lersek@redhat.com> Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Acked-by: Isaku Yamahata <yamahata@valinux.co.jp> Acked-by: Magnus Christensson <magnus.christensson@intel.com> Acked-by: Hu Tao <hutao@cn.fujitsu.com> Acked-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Tested-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Tested-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-07-24 17:56:14 +02:00
static bool has_acpi_build = true;
static bool rsdp_in_ram = true;
static bool smbios_defaults = true;
static bool smbios_legacy_mode;
static bool smbios_uuid_encoded = true;
/* Make sure that guest addresses aligned at 1Gbyte boundaries get mapped to
* host addresses aligned at 1Gbyte boundaries. This way we can use 1GByte
* pages in the host.
*/
static bool gigabyte_align = true;
static bool has_reserved_memory = true;
/* PC hardware initialisation */
static void pc_q35_init(MachineState *machine)
{
PCMachineState *pc_machine = PC_MACHINE(machine);
ram_addr_t below_4g_mem_size, above_4g_mem_size;
Q35PCIHost *q35_host;
PCIHostState *phb;
PCIBus *host_bus;
PCIDevice *lpc;
BusState *idebus[MAX_SATA_PORTS];
ISADevice *rtc_state;
ISADevice *floppy;
MemoryRegion *pci_memory;
MemoryRegion *rom_memory;
MemoryRegion *ram_memory;
GSIState *gsi_state;
ISABus *isa_bus;
int pci_enabled = 1;
qemu_irq *cpu_irq;
qemu_irq *gsi;
qemu_irq *i8259;
int i;
ICH9LPCState *ich9_lpc;
PCIDevice *ahci;
DeviceState *icc_bridge;
PcGuestInfo *guest_info;
ram_addr_t lowmem;
DriveInfo *hd[MAX_SATA_PORTS];
/* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory
* and 256 Mbytes for PCI Express Enhanced Configuration Access Mapping
* also known as MMCFG).
* If it doesn't, we need to split it in chunks below and above 4G.
* In any case, try to make sure that guest addresses aligned at
* 1G boundaries get mapped to host addresses aligned at 1G boundaries.
* For old machine types, use whatever split we used historically to avoid
* breaking migration.
*/
if (machine->ram_size >= 0xb0000000) {
lowmem = gigabyte_align ? 0x80000000 : 0xb0000000;
} else {
lowmem = 0xb0000000;
}
/* Handle the machine opt max-ram-below-4g. It is basically doing
* min(qemu limit, user limit).
*/
if (lowmem > pc_machine->max_ram_below_4g) {
lowmem = pc_machine->max_ram_below_4g;
if (machine->ram_size - lowmem > lowmem &&
lowmem & ((1ULL << 30) - 1)) {
error_report("Warning: Large machine and max_ram_below_4g(%"PRIu64
") not a multiple of 1G; possible bad performance.",
pc_machine->max_ram_below_4g);
}
}
if (machine->ram_size >= lowmem) {
above_4g_mem_size = machine->ram_size - lowmem;
below_4g_mem_size = lowmem;
} else {
above_4g_mem_size = 0;
below_4g_mem_size = machine->ram_size;
}
if (xen_enabled() && xen_hvm_init(&below_4g_mem_size, &above_4g_mem_size,
&ram_memory) != 0) {
fprintf(stderr, "xen hardware virtual machine initialisation failed\n");
exit(1);
}
icc_bridge = qdev_create(NULL, TYPE_ICC_BRIDGE);
object_property_add_child(qdev_get_machine(), "icc-bridge",
OBJECT(icc_bridge), NULL);
pc_cpus_init(machine->cpu_model, icc_bridge);
pc_acpi_init("q35-acpi-dsdt.aml");
kvmclock_create();
/* pci enabled */
if (pci_enabled) {
pci_memory = g_new(MemoryRegion, 1);
memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
rom_memory = pci_memory;
} else {
pci_memory = NULL;
rom_memory = get_system_memory();
}
guest_info = pc_guest_info_init(below_4g_mem_size, above_4g_mem_size);
guest_info->isapc_ram_fw = false;
i386: ACPI table generation code from seabios This adds C code for generating ACPI tables at runtime, imported from seabios git tree commit 51684b7ced75fb76776e8ee84833fcfb6ecf12dd Although ACPI tables come from a system BIOS on real hw, it makes sense that the ACPI tables are coupled with the virtual machine, since they have to abstract the x86 machine to the OS's. This is widely desired as a way to avoid the churn and proliferation of QEMU-specific interfaces associated with ACPI tables in bios code. Notes: As BIOS can reprogram devices prior to loading ACPI tables, we pre-format ACPI tables but defer loading hardware configuration there until tables are loaded. The code structure was intentionally kept as close to the seabios original as possible, to simplify comparison and making sure we didn't lose anything in translation. Minor code duplication results, to help ensure there are no functional regressions, I think it's better to merge it like this and do more code changes in follow-up patches. Cross-version compatibility concerns have been addressed: ACPI tables are exposed to guest as FW_CFG entries. When running with -M 1.5 and older, this patch disables ACPI table generation, and doesn't expose ACPI tables to guest. As table content is likely to change over time, the following measures are taken to simplify cross-version migration: - All tables besides the RSDP are packed in a single FW CFG entry. This entry size is currently 23K. We round it up to 64K to avoid too much churn there. - Tables are placed in special ROM blob (not mapped into guest memory) which is automatically migrated together with the guest, same as BIOS code. - Offsets where hardware configuration is loaded in ACPI tables are also migrated, this is in case future ACPI changes make us rearrange the tables in memory. This patch reuses some code from SeaBIOS, which was originally under LGPLv2 and then relicensed to GPLv3 or LGPLv3, in QEMU under GPLv2+. This relicensing has been acked by all contributors that had contributed to the code since the v2->v3 relicense. ACKs approving the v2+ relicensing are listed below. The list might include ACKs from people not holding copyright on any parts of the reused code, but it's better to err on the side of caution and include them. Affected SeaBIOS files (GPLv2+ license headers added) <http://thread.gmane.org/gmane.comp.bios.coreboot.seabios/5949>: src/acpi-dsdt-cpu-hotplug.dsl src/acpi-dsdt-dbug.dsl src/acpi-dsdt-hpet.dsl src/acpi-dsdt-isa.dsl src/acpi-dsdt-pci-crs.dsl src/acpi.c src/acpi.h src/ssdt-misc.dsl src/ssdt-pcihp.dsl src/ssdt-proc.dsl tools/acpi_extract.py tools/acpi_extract_preprocess.py Each one of the listed people agreed to the following: > If you allow the use of your contribution in QEMU under the > terms of GPLv2 or later as proposed by this patch, > please respond to this mail including the line: > > Acked-by: Name <email address> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Jason Baron <jbaron@akamai.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Gleb Natapov <gleb@redhat.com> Acked-by: Marcelo Tosatti <mtosatti@redhat.com> Acked-by: Dave Frodin <dave.frodin@se-eng.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Kevin O'Connor <kevin@koconnor.net> Acked-by: Laszlo Ersek <lersek@redhat.com> Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Acked-by: Isaku Yamahata <yamahata@valinux.co.jp> Acked-by: Magnus Christensson <magnus.christensson@intel.com> Acked-by: Hu Tao <hutao@cn.fujitsu.com> Acked-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Tested-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Tested-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-07-24 17:56:14 +02:00
guest_info->has_acpi_build = has_acpi_build;
guest_info->has_reserved_memory = has_reserved_memory;
guest_info->rsdp_in_ram = rsdp_in_ram;
pc: hack for migration compatibility from QEMU 2.0 Changing the ACPI table size causes migration to break, and the memory hotplug work opened our eyes on how horribly we were breaking things in 2.0 already. The ACPI table size is rounded to the next 4k, which one would think gives some headroom. In practice this is not the case, because the user can control the ACPI table size (each CPU adds 97 bytes to the SSDT and 8 to the MADT) and so some "-smp" values will break the 4k boundary and fail to migrate. Similarly, PCI bridges add ~1870 bytes to the SSDT. This patch concerns itself with fixing migration from QEMU 2.0. It computes the payload size of QEMU 2.0 and always uses that one. The previous patch shrunk the ACPI tables enough that the QEMU 2.0 size should always be enough; non-AML tables can change depending on the configuration (especially MADT, SRAT, HPET) but they remain the same between QEMU 2.0 and 2.1, so we only compute our padding based on the sizes of the SSDT and DSDT. Migration from QEMU 1.7 should work for guests that have a number of CPUs other than 12, 13, 14, 54, 55, 56, 97, 98, 139, 140. It was already broken from QEMU 1.7 to QEMU 2.0 in the same way, though. Even with this patch, QEMU 1.7 and 2.0 have two different ideas of "-M pc-i440fx-2.0" when there are PCI bridges. Igor sent a patch to adopt the QEMU 1.7 definition. I think distributions should apply it if they move directly from QEMU 1.7 to 2.1+ without ever packaging version 2.0. Reviewed-by: Laszlo Ersek <lersek@redhat.com> Tested-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-07-28 17:34:15 +02:00
/* Migration was not supported in 2.0 for Q35, so do not bother
* with this hack (see hw/i386/acpi-build.c).
*/
guest_info->legacy_acpi_table_size = 0;
if (smbios_defaults) {
MachineClass *mc = MACHINE_GET_CLASS(machine);
/* These values are guest ABI, do not change */
smbios_set_defaults("QEMU", "Standard PC (Q35 + ICH9, 2009)",
mc->name, smbios_legacy_mode, smbios_uuid_encoded);
}
/* allocate ram and load rom/bios */
if (!xen_enabled()) {
pc_memory_init(machine, get_system_memory(),
below_4g_mem_size, above_4g_mem_size,
rom_memory, &ram_memory, guest_info);
}
/* irq lines */
gsi_state = g_malloc0(sizeof(*gsi_state));
if (kvm_irqchip_in_kernel()) {
kvm_pc_setup_irq_routing(pci_enabled);
gsi = qemu_allocate_irqs(kvm_pc_gsi_handler, gsi_state,
GSI_NUM_PINS);
} else {
gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
}
/* create pci host bus */
q35_host = Q35_HOST_DEVICE(qdev_create(NULL, TYPE_Q35_HOST_DEVICE));
object_property_add_child(qdev_get_machine(), "q35", OBJECT(q35_host), NULL);
q35_host->mch.ram_memory = ram_memory;
q35_host->mch.pci_address_space = pci_memory;
q35_host->mch.system_memory = get_system_memory();
q35_host->mch.address_space_io = get_system_io();
q35_host->mch.below_4g_mem_size = below_4g_mem_size;
q35_host->mch.above_4g_mem_size = above_4g_mem_size;
q35_host->mch.guest_info = guest_info;
/* pci */
qdev_init_nofail(DEVICE(q35_host));
phb = PCI_HOST_BRIDGE(q35_host);
host_bus = phb->bus;
/* create ISA bus */
lpc = pci_create_simple_multifunction(host_bus, PCI_DEVFN(ICH9_LPC_DEV,
ICH9_LPC_FUNC), true,
TYPE_ICH9_LPC_DEVICE);
object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
TYPE_HOTPLUG_HANDLER,
(Object **)&pc_machine->acpi_dev,
object_property_allow_set_link,
OBJ_PROP_LINK_UNREF_ON_RELEASE, &error_abort);
object_property_set_link(OBJECT(machine), OBJECT(lpc),
PC_MACHINE_ACPI_DEVICE_PROP, &error_abort);
ich9_lpc = ICH9_LPC_DEVICE(lpc);
ich9_lpc->pic = gsi;
ich9_lpc->ioapic = gsi_state->ioapic_irq;
pci_bus_irqs(host_bus, ich9_lpc_set_irq, ich9_lpc_map_irq, ich9_lpc,
ICH9_LPC_NB_PIRQS);
pci_bus_set_route_irq_fn(host_bus, ich9_route_intx_pin_to_irq);
isa_bus = ich9_lpc->isa_bus;
/*end early*/
isa_bus_irqs(isa_bus, gsi);
if (kvm_irqchip_in_kernel()) {
i8259 = kvm_i8259_init(isa_bus);
} else if (xen_enabled()) {
i8259 = xen_interrupt_controller_init();
} else {
cpu_irq = pc_allocate_cpu_irq();
i8259 = i8259_init(isa_bus, cpu_irq[0]);
}
for (i = 0; i < ISA_NUM_IRQS; i++) {
gsi_state->i8259_irq[i] = i8259[i];
}
if (pci_enabled) {
ioapic_init_gsi(gsi_state, "q35");
}
qdev_init_nofail(icc_bridge);
pc_register_ferr_irq(gsi[13]);
assert(pc_machine->vmport != ON_OFF_AUTO_MAX);
if (pc_machine->vmport == ON_OFF_AUTO_AUTO) {
pc_machine->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
}
/* init basic PC hardware */
pc_basic_device_init(isa_bus, gsi, &rtc_state, true, &floppy,
(pc_machine->vmport != ON_OFF_AUTO_ON), 0xff0104);
/* connect pm stuff to lpc */
ich9_lpc_pm_init(lpc);
/* ahci and SATA device, for q35 1 ahci controller is built-in */
ahci = pci_create_simple_multifunction(host_bus,
PCI_DEVFN(ICH9_SATA1_DEV,
ICH9_SATA1_FUNC),
true, "ich9-ahci");
idebus[0] = qdev_get_child_bus(&ahci->qdev, "ide.0");
idebus[1] = qdev_get_child_bus(&ahci->qdev, "ide.1");
g_assert(MAX_SATA_PORTS == ICH_AHCI(ahci)->ahci.ports);
ide_drive_get(hd, ICH_AHCI(ahci)->ahci.ports);
ahci_ide_create_devs(ahci, hd);
if (usb_enabled()) {
/* Should we create 6 UHCI according to ich9 spec? */
ehci_create_ich9_with_companions(host_bus, 0x1d);
}
/* TODO: Populate SPD eeprom data. */
smbus_eeprom_init(ich9_smb_init(host_bus,
PCI_DEVFN(ICH9_SMB_DEV, ICH9_SMB_FUNC),
0xb100),
8, NULL, 0);
pc_cmos_init(below_4g_mem_size, above_4g_mem_size, machine->boot_order,
machine, floppy, idebus[0], idebus[1], rtc_state);
/* the rest devices to which pci devfn is automatically assigned */
pc_vga_init(isa_bus, host_bus);
pc_nic_init(isa_bus, host_bus);
if (pci_enabled) {
pc_pci_device_init(host_bus);
}
}
static void pc_compat_2_3(MachineState *machine)
{
}
static void pc_compat_2_2(MachineState *machine)
{
pc_compat_2_3(machine);
rsdp_in_ram = false;
x86_cpu_compat_set_features("kvm64", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("kvm32", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Conroe", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Penryn", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Nehalem", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Westmere", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("SandyBridge", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Haswell", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Broadwell", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Opteron_G1", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Opteron_G2", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Opteron_G3", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Opteron_G4", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Opteron_G5", FEAT_1_EDX, 0, CPUID_VME);
x86_cpu_compat_set_features("Haswell", FEAT_1_ECX, 0, CPUID_EXT_F16C);
x86_cpu_compat_set_features("Haswell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND);
x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_F16C);
x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND);
machine->suppress_vmdesc = true;
}
static void pc_compat_2_1(MachineState *machine)
{
PCMachineState *pcms = PC_MACHINE(machine);
pc_compat_2_2(machine);
pcms->enforce_aligned_dimm = false;
smbios_uuid_encoded = false;
x86_cpu_compat_set_features("coreduo", FEAT_1_ECX, CPUID_EXT_VMX, 0);
x86_cpu_compat_set_features("core2duo", FEAT_1_ECX, CPUID_EXT_VMX, 0);
x86_cpu_compat_kvm_no_autodisable(FEAT_8000_0001_ECX, CPUID_EXT3_SVM);
}
static void pc_compat_2_0(MachineState *machine)
{
pc_compat_2_1(machine);
smbios_legacy_mode = true;
has_reserved_memory = false;
pc_set_legacy_acpi_data_size();
}
static void pc_compat_1_7(MachineState *machine)
{
pc_compat_2_0(machine);
smbios_defaults = false;
gigabyte_align = false;
option_rom_has_mr = true;
x86_cpu_compat_kvm_no_autoenable(FEAT_1_ECX, CPUID_EXT_X2APIC);
}
static void pc_compat_1_6(MachineState *machine)
{
pc_compat_1_7(machine);
rom_file_has_mr = false;
i386: ACPI table generation code from seabios This adds C code for generating ACPI tables at runtime, imported from seabios git tree commit 51684b7ced75fb76776e8ee84833fcfb6ecf12dd Although ACPI tables come from a system BIOS on real hw, it makes sense that the ACPI tables are coupled with the virtual machine, since they have to abstract the x86 machine to the OS's. This is widely desired as a way to avoid the churn and proliferation of QEMU-specific interfaces associated with ACPI tables in bios code. Notes: As BIOS can reprogram devices prior to loading ACPI tables, we pre-format ACPI tables but defer loading hardware configuration there until tables are loaded. The code structure was intentionally kept as close to the seabios original as possible, to simplify comparison and making sure we didn't lose anything in translation. Minor code duplication results, to help ensure there are no functional regressions, I think it's better to merge it like this and do more code changes in follow-up patches. Cross-version compatibility concerns have been addressed: ACPI tables are exposed to guest as FW_CFG entries. When running with -M 1.5 and older, this patch disables ACPI table generation, and doesn't expose ACPI tables to guest. As table content is likely to change over time, the following measures are taken to simplify cross-version migration: - All tables besides the RSDP are packed in a single FW CFG entry. This entry size is currently 23K. We round it up to 64K to avoid too much churn there. - Tables are placed in special ROM blob (not mapped into guest memory) which is automatically migrated together with the guest, same as BIOS code. - Offsets where hardware configuration is loaded in ACPI tables are also migrated, this is in case future ACPI changes make us rearrange the tables in memory. This patch reuses some code from SeaBIOS, which was originally under LGPLv2 and then relicensed to GPLv3 or LGPLv3, in QEMU under GPLv2+. This relicensing has been acked by all contributors that had contributed to the code since the v2->v3 relicense. ACKs approving the v2+ relicensing are listed below. The list might include ACKs from people not holding copyright on any parts of the reused code, but it's better to err on the side of caution and include them. Affected SeaBIOS files (GPLv2+ license headers added) <http://thread.gmane.org/gmane.comp.bios.coreboot.seabios/5949>: src/acpi-dsdt-cpu-hotplug.dsl src/acpi-dsdt-dbug.dsl src/acpi-dsdt-hpet.dsl src/acpi-dsdt-isa.dsl src/acpi-dsdt-pci-crs.dsl src/acpi.c src/acpi.h src/ssdt-misc.dsl src/ssdt-pcihp.dsl src/ssdt-proc.dsl tools/acpi_extract.py tools/acpi_extract_preprocess.py Each one of the listed people agreed to the following: > If you allow the use of your contribution in QEMU under the > terms of GPLv2 or later as proposed by this patch, > please respond to this mail including the line: > > Acked-by: Name <email address> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Jason Baron <jbaron@akamai.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Gleb Natapov <gleb@redhat.com> Acked-by: Marcelo Tosatti <mtosatti@redhat.com> Acked-by: Dave Frodin <dave.frodin@se-eng.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Kevin O'Connor <kevin@koconnor.net> Acked-by: Laszlo Ersek <lersek@redhat.com> Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Acked-by: Isaku Yamahata <yamahata@valinux.co.jp> Acked-by: Magnus Christensson <magnus.christensson@intel.com> Acked-by: Hu Tao <hutao@cn.fujitsu.com> Acked-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Tested-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Tested-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-07-24 17:56:14 +02:00
has_acpi_build = false;
}
static void pc_compat_1_5(MachineState *machine)
{
pc_compat_1_6(machine);
}
static void pc_compat_1_4(MachineState *machine)
pc: Kill the "use flash device for BIOS unless KVM" misfeature Use of a flash memory device for the BIOS was added in series "[PATCH v10 0/8] PC system flash support", commit 4732dca..1b89faf, v1.1. Flash vs. ROM is a guest-visible difference. Thus, flash use had to be suppressed for machine types pc-1.0 and older. This was accomplished by adding a dummy device "pc-sysfw" with property "rom_only": * Non-zero rom_only means "use ROM". Default for pc-1.0 and older. * Zero rom_only means "maybe use flash". Default for newer machines. Not only is the dummy device ugly, it was also retroactively added to the older machine types! Fortunately, it's not guest-visible (thus no immediate guest ABI breakage), and has no vmstate (thus no immediate migration breakage). Breakage occurs only if the user unwisely enables flash by setting rom_only to zero. Patch review FAIL #1. Why "maybe use flash"? Flash didn't (and still doesn't) work with KVM. Therefore, rom_only=0 really means "use flash, except when KVM is enabled, use ROM". This is a Bad Idea, because it makes enabling/ disabling KVM guest-visible. Patch review FAIL #2. Aside: it also precludes migrating between KVM on and off, but that's not possible for other reasons anyway. Fix as follows: 1. Change the meaning of rom_only=0 to mean "use flash, no ifs, buts, or maybes" for pc-i440fx-1.5 and pc-q35-1.5. Don't change anything for older machines (to remain bug-compatible). 2. Change the default value from 0 to 1 for these machines. Necessary, because 0 doesn't work with KVM. Once it does, we can flip the default back to 0. 3. Don't revert the retroactive addition of device "pc-sysfw" to older machine types. Seems not worth the trouble. 4. Add a TODO comment asking for device "pc-sysfw" to be dropped once flash works with KVM. Net effect is that you get a BIOS ROM again even when KVM is disabled, just like for machines predating the introduction of flash. To get flash instead, use "--global pc-sysfw.rom_only=0". Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-id: 1365780303-26398-4-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-12 17:25:03 +02:00
{
pc_compat_1_5(machine);
x86_cpu_compat_set_features("n270", FEAT_1_ECX, 0, CPUID_EXT_MOVBE);
x86_cpu_compat_set_features("Westmere", FEAT_1_ECX, 0, CPUID_EXT_PCLMULQDQ);
}
#define DEFINE_Q35_MACHINE(suffix, name, compatfn, optionfn) \
static void pc_init_##suffix(MachineState *machine) \
{ \
void (*compat)(MachineState *m) = (compatfn); \
if (compat) { \
compat(machine); \
} \
pc_q35_init(machine); \
} \
DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)
pc: Kill the "use flash device for BIOS unless KVM" misfeature Use of a flash memory device for the BIOS was added in series "[PATCH v10 0/8] PC system flash support", commit 4732dca..1b89faf, v1.1. Flash vs. ROM is a guest-visible difference. Thus, flash use had to be suppressed for machine types pc-1.0 and older. This was accomplished by adding a dummy device "pc-sysfw" with property "rom_only": * Non-zero rom_only means "use ROM". Default for pc-1.0 and older. * Zero rom_only means "maybe use flash". Default for newer machines. Not only is the dummy device ugly, it was also retroactively added to the older machine types! Fortunately, it's not guest-visible (thus no immediate guest ABI breakage), and has no vmstate (thus no immediate migration breakage). Breakage occurs only if the user unwisely enables flash by setting rom_only to zero. Patch review FAIL #1. Why "maybe use flash"? Flash didn't (and still doesn't) work with KVM. Therefore, rom_only=0 really means "use flash, except when KVM is enabled, use ROM". This is a Bad Idea, because it makes enabling/ disabling KVM guest-visible. Patch review FAIL #2. Aside: it also precludes migrating between KVM on and off, but that's not possible for other reasons anyway. Fix as follows: 1. Change the meaning of rom_only=0 to mean "use flash, no ifs, buts, or maybes" for pc-i440fx-1.5 and pc-q35-1.5. Don't change anything for older machines (to remain bug-compatible). 2. Change the default value from 0 to 1 for these machines. Necessary, because 0 doesn't work with KVM. Once it does, we can flip the default back to 0. 3. Don't revert the retroactive addition of device "pc-sysfw" to older machine types. Seems not worth the trouble. 4. Add a TODO comment asking for device "pc-sysfw" to be dropped once flash works with KVM. Net effect is that you get a BIOS ROM again even when KVM is disabled, just like for machines predating the introduction of flash. To get flash instead, use "--global pc-sysfw.rom_only=0". Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-id: 1365780303-26398-4-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-12 17:25:03 +02:00
static void pc_q35_machine_options(MachineClass *m)
{
pc_default_machine_options(m);
m->family = "pc_q35";
m->desc = "Standard PC (Q35 + ICH9, 2009)";
m->hot_add_cpu = pc_hot_add_cpu;
m->units_per_default_bus = 1;
}
static void pc_q35_2_4_machine_options(MachineClass *m)
{
pc_q35_machine_options(m);
m->default_machine_opts = "firmware=bios-256k.bin";
m->default_display = "std";
m->alias = "q35";
}
DEFINE_Q35_MACHINE(v2_4, "pc-q35-2.4", NULL,
pc_q35_2_4_machine_options);
static void pc_q35_2_3_machine_options(MachineClass *m)
{
pc_q35_2_4_machine_options(m);
m->alias = NULL;
SET_MACHINE_COMPAT(m, PC_COMPAT_2_3);
}
DEFINE_Q35_MACHINE(v2_3, "pc-q35-2.3", pc_compat_2_3,
pc_q35_2_3_machine_options);
static void pc_q35_2_2_machine_options(MachineClass *m)
{
pc_q35_2_3_machine_options(m);
SET_MACHINE_COMPAT(m, PC_COMPAT_2_2);
}
DEFINE_Q35_MACHINE(v2_2, "pc-q35-2.2", pc_compat_2_2,
pc_q35_2_2_machine_options);
static void pc_q35_2_1_machine_options(MachineClass *m)
{
pc_q35_2_2_machine_options(m);
m->default_display = NULL;
SET_MACHINE_COMPAT(m, PC_COMPAT_2_1);
}
DEFINE_Q35_MACHINE(v2_1, "pc-q35-2.1", pc_compat_2_1,
pc_q35_2_1_machine_options);
static void pc_q35_2_0_machine_options(MachineClass *m)
{
pc_q35_2_1_machine_options(m);
SET_MACHINE_COMPAT(m, PC_COMPAT_2_0);
}
DEFINE_Q35_MACHINE(v2_0, "pc-q35-2.0", pc_compat_2_0,
pc_q35_2_0_machine_options);
static void pc_q35_1_7_machine_options(MachineClass *m)
{
pc_q35_2_0_machine_options(m);
m->default_machine_opts = NULL;
SET_MACHINE_COMPAT(m, PC_COMPAT_1_7);
}
DEFINE_Q35_MACHINE(v1_7, "pc-q35-1.7", pc_compat_1_7,
pc_q35_1_7_machine_options);
static void pc_q35_1_6_machine_options(MachineClass *m)
{
pc_q35_machine_options(m);
SET_MACHINE_COMPAT(m, PC_COMPAT_1_6);
}
DEFINE_Q35_MACHINE(v1_6, "pc-q35-1.6", pc_compat_1_6,
pc_q35_1_6_machine_options);
static void pc_q35_1_5_machine_options(MachineClass *m)
{
pc_q35_1_6_machine_options(m);
SET_MACHINE_COMPAT(m, PC_COMPAT_1_5);
}
pc: Define MACHINE_OPTIONS macros consistently for all machines Define a MACHINE_OPTIONS macro for each PC machine, and move every field inside the QEMUMachine structs to the macros, except for name, init, and compat_props. This also ensures that all MACHINE_OPTIONS inherit the fields from the next version, so their definitions carry only the changes that exist between one version and the next one. Comments about specific cases: pc-*-2.1: Existing PC_*_2_1_MACHINE_OPTIONS macros were defined as: PC_*_MACHINE_OPTIONS, .default_machine_opts = "firmware=bios-256k.bin" PC_*_2_2_MACHINE_OPTIONS is: PC_*_2_3_MACHINE_OPTIONS which is expanded to: PC_*_MACHINE_OPTIONS, .default_machine_opts = "firmware=bios-256k.bin", .default_display = "std" The only difference between 2_1 and 2_2 is .default_display, that's why we didn't reuse PC_*_2_2_MACHINE_OPTIONS. The good news is that having multiple initializers for a field is allowed by C99, and the last initializer overrides the previous ones. So we can reuse the 2_2 macro in 2_1 and define PC_*_2_1_MACHINE_OPTIONS as: PC_*_2_2_MACHINE_OPTIONS, .default_display = NULL pc-*-1.7: PC_*_1_7_MACHINE_OPTIONS was defined as: PC_*_MACHINE_OPTIONS PC_*_2_0_MACHINE_OPTIONS is defined as: PC_*_2_1_MACHINE_OPTIONS which is expanded to: PC_*_2_2_MACHINE_OPTIONS, .default_display = NULL which is expanded to: PC_*_2_3_MACHINE_OPTIONS, .default_display = NULL which is expanded to: PC_*_MACHINE_OPTIONS, .default_machine_opts = "firmware=bios-256k.bin", .default_display = "std", .default_display = NULL /* overrides the previous line */ So, the only difference between PC_*_1_7_MACHINE_OPTIONS and PC_*_2_0_MACHINE_OPTIONS is .default_machine_opts (as .default_display is not explicitly set by PC_*_MACHINE_OPTIONS so it is NULL). So we can keep the macro reuse pattern and define PC_*_2_0_MACHINE_OPTIONS as: PC_*_2_0_MACHINE_OPTIONS, .default_machine_opts = NULL pc-*-2.4 (alias and is_default fields): Set alias and is_default fields inside the 2.4 MACHINE_OPTIONS macro, and clear it in the 2.3 macro (that reuses the 2.4 macro). hw_machine: As all the machines older than v1.0 set hw_version explicitly, we can safely move the field to the MACHINE_OPTIONS macros without affecting the other versions that reuse them. init function: Some machines had the init function set inside the MACHINE_OPTIONS macro. Move it to the QEMUMachine declaration, to keep it consistent with the other machines. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-05-15 19:18:52 +02:00
DEFINE_Q35_MACHINE(v1_5, "pc-q35-1.5", pc_compat_1_5,
pc_q35_1_5_machine_options);
static void pc_q35_1_4_machine_options(MachineClass *m)
{
pc_q35_1_5_machine_options(m);
m->hot_add_cpu = NULL;
SET_MACHINE_COMPAT(m, PC_COMPAT_1_4);
}
DEFINE_Q35_MACHINE(v1_4, "pc-q35-1.4", pc_compat_1_4,
pc_q35_1_4_machine_options);