diff options
Diffstat (limited to 'hw/i386/pc_piix.c')
| -rw-r--r-- | hw/i386/pc_piix.c | 52 |
1 files changed, 46 insertions, 6 deletions
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index ab562853b8..a327d71fb1 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -28,6 +28,7 @@ #include "hw/loader.h" #include "hw/i386/pc.h" #include "hw/i386/apic.h" +#include "hw/i386/smbios.h" #include "hw/pci/pci.h" #include "hw/pci/pci_ids.h" #include "hw/usb.h" @@ -59,6 +60,12 @@ static const int ide_irq[MAX_IDE_BUS] = { 14, 15 }; static bool has_pci_info; static bool has_acpi_build = true; +static bool smbios_type1_defaults = 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; /* PC hardware initialisation */ static void pc_init1(QEMUMachineInitArgs *args, @@ -104,9 +111,17 @@ static void pc_init1(QEMUMachineInitArgs *args, kvmclock_create(); } + /* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory). + * 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 (args->ram_size >= 0xe0000000) { - above_4g_mem_size = args->ram_size - 0xe0000000; - below_4g_mem_size = 0xe0000000; + ram_addr_t lowmem = gigabyte_align ? 0xc0000000 : 0xe0000000; + above_4g_mem_size = args->ram_size - lowmem; + below_4g_mem_size = lowmem; } else { above_4g_mem_size = 0; below_4g_mem_size = args->ram_size; @@ -114,7 +129,7 @@ static void pc_init1(QEMUMachineInitArgs *args, if (pci_enabled) { pci_memory = g_new(MemoryRegion, 1); - memory_region_init(pci_memory, NULL, "pci", INT64_MAX); + memory_region_init(pci_memory, NULL, "pci", UINT64_MAX); rom_memory = pci_memory; } else { pci_memory = NULL; @@ -128,6 +143,12 @@ static void pc_init1(QEMUMachineInitArgs *args, guest_info->has_pci_info = has_pci_info; guest_info->isapc_ram_fw = !pci_enabled; + if (smbios_type1_defaults) { + /* These values are guest ABI, do not change */ + smbios_set_type1_defaults("QEMU", "Standard PC (i440FX + PIIX, 1996)", + args->machine->name); + } + /* allocate ram and load rom/bios */ if (!xen_enabled()) { fw_cfg = pc_memory_init(system_memory, @@ -150,7 +171,6 @@ static void pc_init1(QEMUMachineInitArgs *args, pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, &isa_bus, gsi, system_memory, system_io, args->ram_size, below_4g_mem_size, - 0x100000000ULL - below_4g_mem_size, above_4g_mem_size, pci_memory, ram_memory); } else { @@ -183,7 +203,8 @@ static void pc_init1(QEMUMachineInitArgs *args, pc_vga_init(isa_bus, pci_enabled ? pci_bus : NULL); /* init basic PC hardware */ - pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, xen_enabled()); + pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, xen_enabled(), + 0x4); pc_nic_init(isa_bus, pci_bus); @@ -235,8 +256,15 @@ static void pc_init_pci(QEMUMachineInitArgs *args) pc_init1(args, 1, 1); } +static void pc_compat_1_7(QEMUMachineInitArgs *args) +{ + smbios_type1_defaults = false; + gigabyte_align = false; +} + static void pc_compat_1_6(QEMUMachineInitArgs *args) { + pc_compat_1_7(args); has_pci_info = false; rom_file_in_ram = false; has_acpi_build = false; @@ -267,6 +295,12 @@ static void pc_compat_1_2(QEMUMachineInitArgs *args) disable_kvm_pv_eoi(); } +static void pc_init_pci_1_7(QEMUMachineInitArgs *args) +{ + pc_compat_1_7(args); + pc_init_pci(args); +} + static void pc_init_pci_1_6(QEMUMachineInitArgs *args) { pc_compat_1_6(args); @@ -303,6 +337,7 @@ static void pc_init_pci_no_kvmclock(QEMUMachineInitArgs *args) { has_pci_info = false; has_acpi_build = false; + smbios_type1_defaults = false; disable_kvm_pv_eoi(); enable_compat_apic_id_mode(); pc_init1(args, 1, 0); @@ -312,6 +347,7 @@ static void pc_init_isa(QEMUMachineInitArgs *args) { has_pci_info = false; has_acpi_build = false; + smbios_type1_defaults = false; if (!args->cpu_model) { args->cpu_model = "486"; } @@ -356,7 +392,11 @@ static QEMUMachine pc_i440fx_machine_v2_0 = { static QEMUMachine pc_i440fx_machine_v1_7 = { PC_I440FX_1_7_MACHINE_OPTIONS, .name = "pc-i440fx-1.7", - .init = pc_init_pci, + .init = pc_init_pci_1_7, + .compat_props = (GlobalProperty[]) { + PC_COMPAT_1_7, + { /* end of list */ } + }, }; #define PC_I440FX_1_6_MACHINE_OPTIONS PC_I440FX_MACHINE_OPTIONS |