Beispiel #1
0
/* PC hardware initialisation */
static void s390_init(MachineState *machine)
{
    ram_addr_t my_ram_size = machine->ram_size;
    MemoryRegion *sysmem = get_system_memory();
    MemoryRegion *ram = g_new(MemoryRegion, 1);
    int increment_size = 20;
    uint8_t *storage_keys;
    void *virtio_region;
    hwaddr virtio_region_len;
    hwaddr virtio_region_start;

    /*
     * The storage increment size is a multiple of 1M and is a power of 2.
     * The number of storage increments must be MAX_STORAGE_INCREMENTS or
     * fewer.
     */
    while ((my_ram_size >> increment_size) > MAX_STORAGE_INCREMENTS) {
        increment_size++;
    }
    my_ram_size = my_ram_size >> increment_size << increment_size;

    /* let's propagate the changed ram size into the global variable. */
    ram_size = my_ram_size;

    /* get a BUS */
    s390_bus = s390_virtio_bus_init(&my_ram_size);
    s390_sclp_init();
    s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline,
                      machine->initrd_filename, ZIPL_FILENAME);
    s390_flic_init();

    /* register hypercalls */
    s390_virtio_register_hcalls();

    /* allocate RAM */
    memory_region_init_ram(ram, NULL, "s390.ram", my_ram_size);
    vmstate_register_ram_global(ram);
    memory_region_add_subregion(sysmem, 0, ram);

    /* clear virtio region */
    virtio_region_len = my_ram_size - ram_size;
    virtio_region_start = ram_size;
    virtio_region = cpu_physical_memory_map(virtio_region_start,
                                            &virtio_region_len, true);
    memset(virtio_region, 0, virtio_region_len);
    cpu_physical_memory_unmap(virtio_region, virtio_region_len, 1,
                              virtio_region_len);

    /* allocate storage keys */
    storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE);

    /* init CPUs */
    s390_init_cpus(machine->cpu_model, storage_keys);

    /* Create VirtIO network adapters */
    s390_create_virtio_net((BusState *)s390_bus, "virtio-net-s390");
}
/* PC hardware initialisation */
static void s390_init(MachineState *machine)
{
    ram_addr_t my_ram_size;
    void *virtio_region;
    hwaddr virtio_region_len;
    hwaddr virtio_region_start;

    if (machine->ram_slots) {
        error_report("Memory hotplug not supported by the selected machine.");
        exit(EXIT_FAILURE);
    }
    s390_sclp_init();
    my_ram_size = machine->ram_size;

    /* get a BUS */
    s390_bus = s390_virtio_bus_init(&my_ram_size);
    s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline,
                      machine->initrd_filename, ZIPL_FILENAME, false);
    s390_flic_init();

    /* register hypercalls */
    s390_virtio_register_hcalls();

    /* allocate RAM */
    s390_memory_init(my_ram_size);

    /* clear virtio region */
    virtio_region_len = my_ram_size - ram_size;
    virtio_region_start = ram_size;
    virtio_region = cpu_physical_memory_map(virtio_region_start,
                                            &virtio_region_len, true);
    memset(virtio_region, 0, virtio_region_len);
    cpu_physical_memory_unmap(virtio_region, virtio_region_len, 1,
                              virtio_region_len);

    /* init CPUs */
    s390_init_cpus(machine->cpu_model);

    /* Create VirtIO network adapters */
    s390_create_virtio_net((BusState *)s390_bus, "virtio-net-s390");

    /* Register savevm handler for guest TOD clock */
    register_savevm(NULL, "todclock", 0, 1, gtod_save, gtod_load, NULL);
}
Beispiel #3
0
static void ccw_init(MachineState *machine)
{
    int ret;
    VirtualCssBus *css_bus;
    DeviceState *dev;

    s390_sclp_init();
    s390_memory_init(machine->ram_size);

    /* get a BUS */
    css_bus = virtual_css_bus_init();
    s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline,
                      machine->initrd_filename, "s390-ccw.img", true);
    s390_flic_init();

    dev = qdev_create(NULL, TYPE_S390_PCI_HOST_BRIDGE);
    object_property_add_child(qdev_get_machine(), TYPE_S390_PCI_HOST_BRIDGE,
                              OBJECT(dev), NULL);
    qdev_init_nofail(dev);

    /* register hypercalls */
    virtio_ccw_register_hcalls();

    /* init CPUs */
    s390_init_cpus(machine->cpu_model);

    if (kvm_enabled()) {
        kvm_s390_enable_css_support(s390_cpu_addr2state(0));
    }
    /*
     * Create virtual css and set it as default so that non mcss-e
     * enabled guests only see virtio devices.
     */
    ret = css_create_css_image(VIRTUAL_CSSID, true);
    assert(ret == 0);

    /* Create VirtIO network adapters */
    s390_create_virtio_net(BUS(css_bus), "virtio-net-ccw");

    /* Register savevm handler for guest TOD clock */
    register_savevm(NULL, "todclock", 0, 1,
                    gtod_save, gtod_load, kvm_state);
}
static void ccw_init(MachineState *machine)
{
    ram_addr_t my_ram_size = machine->ram_size;
    MemoryRegion *sysmem = get_system_memory();
    MemoryRegion *ram = g_new(MemoryRegion, 1);
    sclpMemoryHotplugDev *mhd = init_sclp_memory_hotplug_dev();
    uint8_t *storage_keys;
    int ret;
    VirtualCssBus *css_bus;
    DeviceState *dev;
    QemuOpts *opts = qemu_opts_find(qemu_find_opts("memory"), NULL);
    ram_addr_t pad_size = 0;
    ram_addr_t maxmem = qemu_opt_get_size(opts, "maxmem", my_ram_size);
    ram_addr_t standby_mem_size = maxmem - my_ram_size;

    /* The storage increment size is a multiple of 1M and is a power of 2.
     * The number of storage increments must be MAX_STORAGE_INCREMENTS or fewer.
     * The variable 'mhd->increment_size' is an exponent of 2 that can be
     * used to calculate the size (in bytes) of an increment. */
    mhd->increment_size = 20;
    while ((my_ram_size >> mhd->increment_size) > MAX_STORAGE_INCREMENTS) {
        mhd->increment_size++;
    }
    while ((standby_mem_size >> mhd->increment_size) > MAX_STORAGE_INCREMENTS) {
        mhd->increment_size++;
    }

    /* The core and standby memory areas need to be aligned with
     * the increment size.  In effect, this can cause the
     * user-specified memory size to be rounded down to align
     * with the nearest increment boundary. */
    standby_mem_size = standby_mem_size >> mhd->increment_size
                                        << mhd->increment_size;
    my_ram_size = my_ram_size >> mhd->increment_size
                              << mhd->increment_size;

    /* let's propagate the changed ram size into the global variable. */
    ram_size = my_ram_size;

    /* get a BUS */
    css_bus = virtual_css_bus_init();
    s390_sclp_init();
    s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline,
                      machine->initrd_filename, "s390-ccw.img");
    s390_flic_init();

    dev = qdev_create(NULL, TYPE_S390_PCI_HOST_BRIDGE);
    object_property_add_child(qdev_get_machine(), TYPE_S390_PCI_HOST_BRIDGE,
                              OBJECT(dev), NULL);
    qdev_init_nofail(dev);

    /* register hypercalls */
    virtio_ccw_register_hcalls();

    /* allocate RAM for core */
    memory_region_init_ram(ram, NULL, "s390.ram", my_ram_size, &error_abort);
    vmstate_register_ram_global(ram);
    memory_region_add_subregion(sysmem, 0, ram);

    /* If the size of ram is not on a MEM_SECTION_SIZE boundary,
       calculate the pad size necessary to force this boundary. */
    if (standby_mem_size) {
        if (my_ram_size % MEM_SECTION_SIZE) {
            pad_size = MEM_SECTION_SIZE - my_ram_size % MEM_SECTION_SIZE;
        }
        my_ram_size += standby_mem_size + pad_size;
        mhd->pad_size = pad_size;
        mhd->standby_mem_size = standby_mem_size;
    }

    /* allocate storage keys */
    storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE);

    /* init CPUs */
    s390_init_cpus(machine->cpu_model, storage_keys);

    if (kvm_enabled()) {
        kvm_s390_enable_css_support(s390_cpu_addr2state(0));
    }
    /*
     * Create virtual css and set it as default so that non mcss-e
     * enabled guests only see virtio devices.
     */
    ret = css_create_css_image(VIRTUAL_CSSID, true);
    assert(ret == 0);

    /* Create VirtIO network adapters */
    s390_create_virtio_net(BUS(css_bus), "virtio-net-ccw");
}