static void s390_ipl_reset(DeviceState *dev) { S390IPLState *ipl = S390_IPL(dev); S390CPU *cpu = S390_CPU(qemu_get_cpu(0)); CPUS390XState *env = &cpu->env; env->psw.addr = ipl->start_addr; env->psw.mask = IPL_PSW_MASK; if (!ipl->kernel) { /* Tell firmware, if there is a preferred boot device */ env->regs[7] = -1; DeviceState *dev_st = get_boot_device(0); if (dev_st) { VirtioCcwDevice *ccw_dev = (VirtioCcwDevice *) object_dynamic_cast( OBJECT(qdev_get_parent_bus(dev_st)->parent), TYPE_VIRTIO_CCW_DEVICE); if (ccw_dev) { env->regs[7] = ccw_dev->sch->cssid << 24 | ccw_dev->sch->ssid << 16 | ccw_dev->sch->devno; } } } s390_add_running_cpu(cpu); }
/* S390CPUClass::load_normal() */ static void s390_cpu_load_normal(CPUState *s) { S390CPU *cpu = S390_CPU(s); cpu->env.psw.addr = ldl_phys(s->as, 4) & PSW_MASK_ESA_ADDR; cpu->env.psw.mask = PSW_MASK_32 | PSW_MASK_64; s390_add_running_cpu(cpu); }
static void s390_ipl_cpu(uint64_t pswaddr) { S390CPU *cpu = S390_CPU(qemu_get_cpu(0)); CPUS390XState *env = &cpu->env; env->psw.addr = pswaddr; env->psw.mask = IPL_PSW_MASK; s390_add_running_cpu(cpu); }
/* CPUClass::reset() */ static void s390_cpu_reset(CPUState *s) { S390CPU *cpu = S390_CPU(s); S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); CPUS390XState *env = &cpu->env; if (qemu_loglevel_mask(CPU_LOG_RESET)) { qemu_log("CPU Reset (CPU %d)\n", env->cpu_index); log_cpu_state(env, 0); } scc->parent_reset(s); memset(env, 0, offsetof(CPUS390XState, breakpoints)); /* FIXME: reset vector? */ tlb_flush(env, 1); s390_add_running_cpu(env); }
/* PC hardware initialisation */ static void s390_init(ram_addr_t my_ram_size, const char *boot_device, const char *kernel_filename, const char *kernel_cmdline, const char *initrd_filename, const char *cpu_model) { CPUState *env = NULL; MemoryRegion *sysmem = get_system_memory(); MemoryRegion *ram = g_new(MemoryRegion, 1); ram_addr_t kernel_size = 0; ram_addr_t initrd_offset; ram_addr_t initrd_size = 0; int shift = 0; uint8_t *storage_keys; void *virtio_region; target_phys_addr_t virtio_region_len; target_phys_addr_t virtio_region_start; int i; /* s390x ram size detection needs a 16bit multiplier + an increment. So guests > 64GB can be specified in 2MB steps etc. */ while ((my_ram_size >> (20 + shift)) > 65535) { shift++; } my_ram_size = my_ram_size >> (20 + shift) << (20 + shift); /* lets 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); /* allocate RAM */ memory_region_init_ram(ram, "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 */ if (cpu_model == NULL) { cpu_model = "host"; } ipi_states = g_malloc(sizeof(CPUState *) * smp_cpus); for (i = 0; i < smp_cpus; i++) { CPUState *tmp_env; tmp_env = cpu_init(cpu_model); if (!env) { env = tmp_env; } ipi_states[i] = tmp_env; tmp_env->halted = 1; tmp_env->exception_index = EXCP_HLT; tmp_env->storage_keys = storage_keys; } /* One CPU has to run */ s390_add_running_cpu(env); if (kernel_filename) { kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, NULL, NULL, 1, ELF_MACHINE, 0); if (kernel_size == -1UL) { kernel_size = load_image_targphys(kernel_filename, 0, ram_size); } /* * we can not rely on the ELF entry point, since up to 3.2 this * value was 0x800 (the SALIPL loader) and it wont work. For * all (Linux) cases 0x10000 (KERN_IMAGE_START) should be fine. */ env->psw.addr = KERN_IMAGE_START; env->psw.mask = 0x0000000180000000ULL; } else { ram_addr_t bios_size = 0; char *bios_filename; /* Load zipl bootloader */ if (bios_name == NULL) { bios_name = ZIPL_FILENAME; } bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); bios_size = load_image_targphys(bios_filename, ZIPL_LOAD_ADDR, 4096); g_free(bios_filename); if ((long)bios_size < 0) { hw_error("could not load bootloader '%s'\n", bios_name); } if (bios_size > 4096) { hw_error("stage1 bootloader is > 4k\n"); } env->psw.addr = ZIPL_START; env->psw.mask = 0x0000000180000000ULL; } if (initrd_filename) { initrd_offset = INITRD_START; while (kernel_size + 0x100000 > initrd_offset) { initrd_offset += 0x100000; } initrd_size = load_image_targphys(initrd_filename, initrd_offset, ram_size - initrd_offset); /* we have to overwrite values in the kernel image, which are "rom" */ memcpy(rom_ptr(INITRD_PARM_START), &initrd_offset, 8); memcpy(rom_ptr(INITRD_PARM_SIZE), &initrd_size, 8); } if (kernel_cmdline) { /* we have to overwrite values in the kernel image, which are "rom" */ memcpy(rom_ptr(KERN_PARM_AREA), kernel_cmdline, strlen(kernel_cmdline) + 1); } /* Create VirtIO network adapters */ for(i = 0; i < nb_nics; i++) { NICInfo *nd = &nd_table[i]; DeviceState *dev; if (!nd->model) { nd->model = g_strdup("virtio"); } if (strcmp(nd->model, "virtio")) { fprintf(stderr, "S390 only supports VirtIO nics\n"); exit(1); } dev = qdev_create((BusState *)s390_bus, "virtio-net-s390"); qdev_set_nic_properties(dev, nd); qdev_init_nofail(dev); } /* Create VirtIO disk drives */ for(i = 0; i < MAX_BLK_DEVS; i++) { DriveInfo *dinfo; DeviceState *dev; dinfo = drive_get(IF_IDE, 0, i); if (!dinfo) { continue; } dev = qdev_create((BusState *)s390_bus, "virtio-blk-s390"); qdev_prop_set_drive_nofail(dev, "drive", dinfo->bdrv); qdev_init_nofail(dev); } }