| /* |
| * bootloader support |
| * |
| * Copyright IBM, Corp. 2012, 2020 |
| * |
| * Authors: |
| * Christian Borntraeger <borntraeger@de.ibm.com> |
| * Janosch Frank <frankja@linux.ibm.com> |
| * |
| * This work is licensed under the terms of the GNU GPL, version 2 or (at your |
| * option) any later version. See the COPYING file in the top-level directory. |
| * |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/datadir.h" |
| #include "qapi/error.h" |
| #include "sysemu/reset.h" |
| #include "sysemu/runstate.h" |
| #include "sysemu/tcg.h" |
| #include "elf.h" |
| #include "hw/loader.h" |
| #include "hw/qdev-properties.h" |
| #include "hw/boards.h" |
| #include "hw/s390x/virtio-ccw.h" |
| #include "hw/s390x/vfio-ccw.h" |
| #include "hw/s390x/css.h" |
| #include "hw/s390x/ebcdic.h" |
| #include "hw/s390x/pv.h" |
| #include "hw/scsi/scsi.h" |
| #include "hw/virtio/virtio-net.h" |
| #include "ipl.h" |
| #include "qemu/error-report.h" |
| #include "qemu/config-file.h" |
| #include "qemu/cutils.h" |
| #include "qemu/option.h" |
| #include "standard-headers/linux/virtio_ids.h" |
| #include "exec/exec-all.h" |
| |
| #define KERN_IMAGE_START 0x010000UL |
| #define LINUX_MAGIC_ADDR 0x010008UL |
| #define KERN_PARM_AREA_SIZE_ADDR 0x010430UL |
| #define KERN_PARM_AREA 0x010480UL |
| #define LEGACY_KERN_PARM_AREA_SIZE 0x000380UL |
| #define INITRD_START 0x800000UL |
| #define INITRD_PARM_START 0x010408UL |
| #define PARMFILE_START 0x001000UL |
| #define ZIPL_IMAGE_START 0x009000UL |
| #define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64) |
| |
| static bool iplb_extended_needed(void *opaque) |
| { |
| S390IPLState *ipl = S390_IPL(object_resolve_path(TYPE_S390_IPL, NULL)); |
| |
| return ipl->iplbext_migration; |
| } |
| |
| static const VMStateDescription vmstate_iplb_extended = { |
| .name = "ipl/iplb_extended", |
| .version_id = 0, |
| .minimum_version_id = 0, |
| .needed = iplb_extended_needed, |
| .fields = (VMStateField[]) { |
| VMSTATE_UINT8_ARRAY(reserved_ext, IplParameterBlock, 4096 - 200), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static const VMStateDescription vmstate_iplb = { |
| .name = "ipl/iplb", |
| .version_id = 0, |
| .minimum_version_id = 0, |
| .fields = (VMStateField[]) { |
| VMSTATE_UINT8_ARRAY(reserved1, IplParameterBlock, 110), |
| VMSTATE_UINT16(devno, IplParameterBlock), |
| VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88), |
| VMSTATE_END_OF_LIST() |
| }, |
| .subsections = (const VMStateDescription*[]) { |
| &vmstate_iplb_extended, |
| NULL |
| } |
| }; |
| |
| static const VMStateDescription vmstate_ipl = { |
| .name = "ipl", |
| .version_id = 0, |
| .minimum_version_id = 0, |
| .fields = (VMStateField[]) { |
| VMSTATE_UINT64(compat_start_addr, S390IPLState), |
| VMSTATE_UINT64(compat_bios_start_addr, S390IPLState), |
| VMSTATE_STRUCT(iplb, S390IPLState, 0, vmstate_iplb, IplParameterBlock), |
| VMSTATE_BOOL(iplb_valid, S390IPLState), |
| VMSTATE_UINT8(cssid, S390IPLState), |
| VMSTATE_UINT8(ssid, S390IPLState), |
| VMSTATE_UINT16(devno, S390IPLState), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static S390IPLState *get_ipl_device(void) |
| { |
| return S390_IPL(object_resolve_path_type("", TYPE_S390_IPL, NULL)); |
| } |
| |
| static uint64_t bios_translate_addr(void *opaque, uint64_t srcaddr) |
| { |
| uint64_t dstaddr = *(uint64_t *) opaque; |
| /* |
| * Assuming that our s390-ccw.img was linked for starting at address 0, |
| * we can simply add the destination address for the final location |
| */ |
| return srcaddr + dstaddr; |
| } |
| |
| static uint64_t get_max_kernel_cmdline_size(void) |
| { |
| uint64_t *size_ptr = rom_ptr(KERN_PARM_AREA_SIZE_ADDR, sizeof(*size_ptr)); |
| |
| if (size_ptr) { |
| uint64_t size; |
| |
| size = be64_to_cpu(*size_ptr); |
| if (size) { |
| return size; |
| } |
| } |
| return LEGACY_KERN_PARM_AREA_SIZE; |
| } |
| |
| static void s390_ipl_realize(DeviceState *dev, Error **errp) |
| { |
| MachineState *ms = MACHINE(qdev_get_machine()); |
| S390IPLState *ipl = S390_IPL(dev); |
| uint32_t *ipl_psw; |
| uint64_t pentry; |
| char *magic; |
| int kernel_size; |
| |
| int bios_size; |
| char *bios_filename; |
| |
| /* |
| * Always load the bios if it was enforced, |
| * even if an external kernel has been defined. |
| */ |
| if (!ipl->kernel || ipl->enforce_bios) { |
| uint64_t fwbase = (MIN(ms->ram_size, 0x80000000U) - 0x200000) & ~0xffffUL; |
| |
| bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->firmware); |
| if (bios_filename == NULL) { |
| error_setg(errp, "could not find stage1 bootloader"); |
| return; |
| } |
| |
| bios_size = load_elf(bios_filename, NULL, |
| bios_translate_addr, &fwbase, |
| &ipl->bios_start_addr, NULL, NULL, NULL, 1, |
| EM_S390, 0, 0); |
| if (bios_size > 0) { |
| /* Adjust ELF start address to final location */ |
| ipl->bios_start_addr += fwbase; |
| } else { |
| /* Try to load non-ELF file */ |
| bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, |
| 4096); |
| ipl->bios_start_addr = ZIPL_IMAGE_START; |
| } |
| g_free(bios_filename); |
| |
| if (bios_size == -1) { |
| error_setg(errp, "could not load bootloader '%s'", ipl->firmware); |
| return; |
| } |
| |
| /* default boot target is the bios */ |
| ipl->start_addr = ipl->bios_start_addr; |
| } |
| |
| if (ipl->kernel) { |
| kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, |
| &pentry, NULL, |
| NULL, NULL, 1, EM_S390, 0, 0); |
| if (kernel_size < 0) { |
| kernel_size = load_image_targphys(ipl->kernel, 0, ms->ram_size); |
| if (kernel_size < 0) { |
| error_setg(errp, "could not load kernel '%s'", ipl->kernel); |
| return; |
| } |
| /* if this is Linux use KERN_IMAGE_START */ |
| magic = rom_ptr(LINUX_MAGIC_ADDR, 6); |
| if (magic && !memcmp(magic, "S390EP", 6)) { |
| pentry = KERN_IMAGE_START; |
| } else { |
| /* if not Linux load the address of the (short) IPL PSW */ |
| ipl_psw = rom_ptr(4, 4); |
| if (ipl_psw) { |
| pentry = be32_to_cpu(*ipl_psw) & PSW_MASK_SHORT_ADDR; |
| } else { |
| error_setg(errp, "Could not get IPL PSW"); |
| return; |
| } |
| } |
| } |
| /* |
| * Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the |
| * kernel parameters here as well. Note: For old kernels (up to 3.2) |
| * we can not rely on the ELF entry point - it was 0x800 (the SALIPL |
| * loader) and it won't work. For this case we force it to 0x10000, too. |
| */ |
| if (pentry == KERN_IMAGE_START || pentry == 0x800) { |
| size_t cmdline_size = strlen(ipl->cmdline) + 1; |
| char *parm_area = rom_ptr(KERN_PARM_AREA, cmdline_size); |
| |
| ipl->start_addr = KERN_IMAGE_START; |
| /* Overwrite parameters in the kernel image, which are "rom" */ |
| if (parm_area) { |
| uint64_t max_cmdline_size = get_max_kernel_cmdline_size(); |
| |
| if (cmdline_size > max_cmdline_size) { |
| error_setg(errp, |
| "kernel command line exceeds maximum size:" |
| " %zu > %" PRIu64, |
| cmdline_size, max_cmdline_size); |
| return; |
| } |
| |
| strcpy(parm_area, ipl->cmdline); |
| } |
| } else { |
| ipl->start_addr = pentry; |
| } |
| |
| if (ipl->initrd) { |
| ram_addr_t initrd_offset; |
| int initrd_size; |
| uint64_t *romptr; |
| |
| initrd_offset = INITRD_START; |
| while (kernel_size + 0x100000 > initrd_offset) { |
| initrd_offset += 0x100000; |
| } |
| initrd_size = load_image_targphys(ipl->initrd, initrd_offset, |
| ms->ram_size - initrd_offset); |
| if (initrd_size == -1) { |
| error_setg(errp, "could not load initrd '%s'", ipl->initrd); |
| return; |
| } |
| |
| /* |
| * we have to overwrite values in the kernel image, |
| * which are "rom" |
| */ |
| romptr = rom_ptr(INITRD_PARM_START, 16); |
| if (romptr) { |
| stq_p(romptr, initrd_offset); |
| stq_p(romptr + 1, initrd_size); |
| } |
| } |
| } |
| /* |
| * Don't ever use the migrated values, they could come from a different |
| * BIOS and therefore don't work. But still migrate the values, so |
| * QEMUs relying on it don't break. |
| */ |
| ipl->compat_start_addr = ipl->start_addr; |
| ipl->compat_bios_start_addr = ipl->bios_start_addr; |
| /* |
| * Because this Device is not on any bus in the qbus tree (it is |
| * not a sysbus device and it's not on some other bus like a PCI |
| * bus) it will not be automatically reset by the 'reset the |
| * sysbus' hook registered by vl.c like most devices. So we must |
| * manually register a reset hook for it. |
| * TODO: there should be a better way to do this. |
| */ |
| qemu_register_reset(resettable_cold_reset_fn, dev); |
| } |
| |
| static Property s390_ipl_properties[] = { |
| DEFINE_PROP_STRING("kernel", S390IPLState, kernel), |
| DEFINE_PROP_STRING("initrd", S390IPLState, initrd), |
| DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline), |
| DEFINE_PROP_STRING("firmware", S390IPLState, firmware), |
| DEFINE_PROP_STRING("netboot_fw", S390IPLState, netboot_fw), |
| DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false), |
| DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration, |
| true), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static void s390_ipl_set_boot_menu(S390IPLState *ipl) |
| { |
| unsigned long splash_time = 0; |
| |
| if (!get_boot_device(0)) { |
| if (current_machine->boot_config.has_menu && current_machine->boot_config.menu) { |
| error_report("boot menu requires a bootindex to be specified for " |
| "the IPL device"); |
| } |
| return; |
| } |
| |
| switch (ipl->iplb.pbt) { |
| case S390_IPL_TYPE_CCW: |
| /* In the absence of -boot menu, use zipl parameters */ |
| if (!current_machine->boot_config.has_menu) { |
| ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL; |
| return; |
| } |
| break; |
| case S390_IPL_TYPE_QEMU_SCSI: |
| break; |
| default: |
| if (current_machine->boot_config.has_menu && current_machine->boot_config.menu) { |
| error_report("boot menu is not supported for this device type"); |
| } |
| return; |
| } |
| |
| if (!current_machine->boot_config.has_menu || !current_machine->boot_config.menu) { |
| return; |
| } |
| |
| ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD; |
| |
| if (current_machine->boot_config.has_splash_time) { |
| splash_time = current_machine->boot_config.splash_time; |
| } |
| if (splash_time > 0xffffffff) { |
| error_report("splash-time is too large, forcing it to max value"); |
| ipl->qipl.boot_menu_timeout = 0xffffffff; |
| return; |
| } |
| |
| ipl->qipl.boot_menu_timeout = cpu_to_be32(splash_time); |
| } |
| |
| #define CCW_DEVTYPE_NONE 0x00 |
| #define CCW_DEVTYPE_VIRTIO 0x01 |
| #define CCW_DEVTYPE_VIRTIO_NET 0x02 |
| #define CCW_DEVTYPE_SCSI 0x03 |
| #define CCW_DEVTYPE_VFIO 0x04 |
| |
| static CcwDevice *s390_get_ccw_device(DeviceState *dev_st, int *devtype) |
| { |
| CcwDevice *ccw_dev = NULL; |
| int tmp_dt = CCW_DEVTYPE_NONE; |
| |
| if (dev_st) { |
| VirtIONet *virtio_net_dev = (VirtIONet *) |
| object_dynamic_cast(OBJECT(dev_st), TYPE_VIRTIO_NET); |
| VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *) |
| object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent), |
| TYPE_VIRTIO_CCW_DEVICE); |
| VFIOCCWDevice *vfio_ccw_dev = (VFIOCCWDevice *) |
| object_dynamic_cast(OBJECT(dev_st), TYPE_VFIO_CCW); |
| |
| if (virtio_ccw_dev) { |
| ccw_dev = CCW_DEVICE(virtio_ccw_dev); |
| if (virtio_net_dev) { |
| tmp_dt = CCW_DEVTYPE_VIRTIO_NET; |
| } else { |
| tmp_dt = CCW_DEVTYPE_VIRTIO; |
| } |
| } else if (vfio_ccw_dev) { |
| ccw_dev = CCW_DEVICE(vfio_ccw_dev); |
| tmp_dt = CCW_DEVTYPE_VFIO; |
| } else { |
| SCSIDevice *sd = (SCSIDevice *) |
| object_dynamic_cast(OBJECT(dev_st), |
| TYPE_SCSI_DEVICE); |
| if (sd) { |
| SCSIBus *sbus = scsi_bus_from_device(sd); |
| VirtIODevice *vdev = (VirtIODevice *) |
| object_dynamic_cast(OBJECT(sbus->qbus.parent), |
| TYPE_VIRTIO_DEVICE); |
| if (vdev) { |
| ccw_dev = (CcwDevice *) |
| object_dynamic_cast(OBJECT(qdev_get_parent_bus(DEVICE(vdev))->parent), |
| TYPE_CCW_DEVICE); |
| if (ccw_dev) { |
| tmp_dt = CCW_DEVTYPE_SCSI; |
| } |
| } |
| } |
| } |
| } |
| if (devtype) { |
| *devtype = tmp_dt; |
| } |
| return ccw_dev; |
| } |
| |
| static bool s390_gen_initial_iplb(S390IPLState *ipl) |
| { |
| DeviceState *dev_st; |
| CcwDevice *ccw_dev = NULL; |
| SCSIDevice *sd; |
| int devtype; |
| |
| dev_st = get_boot_device(0); |
| if (dev_st) { |
| ccw_dev = s390_get_ccw_device(dev_st, &devtype); |
| } |
| |
| /* |
| * Currently allow IPL only from CCW devices. |
| */ |
| if (ccw_dev) { |
| switch (devtype) { |
| case CCW_DEVTYPE_SCSI: |
| sd = SCSI_DEVICE(dev_st); |
| ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN); |
| ipl->iplb.blk0_len = |
| cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN); |
| ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI; |
| ipl->iplb.scsi.lun = cpu_to_be32(sd->lun); |
| ipl->iplb.scsi.target = cpu_to_be16(sd->id); |
| ipl->iplb.scsi.channel = cpu_to_be16(sd->channel); |
| ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno); |
| ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3; |
| break; |
| case CCW_DEVTYPE_VFIO: |
| ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); |
| ipl->iplb.pbt = S390_IPL_TYPE_CCW; |
| ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); |
| ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; |
| break; |
| case CCW_DEVTYPE_VIRTIO_NET: |
| ipl->netboot = true; |
| /* Fall through to CCW_DEVTYPE_VIRTIO case */ |
| case CCW_DEVTYPE_VIRTIO: |
| ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); |
| ipl->iplb.blk0_len = |
| cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN); |
| ipl->iplb.pbt = S390_IPL_TYPE_CCW; |
| ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); |
| ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; |
| break; |
| } |
| |
| if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) { |
| ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID; |
| } |
| |
| return true; |
| } |
| |
| return false; |
| } |
| |
| int s390_ipl_set_loadparm(uint8_t *loadparm) |
| { |
| MachineState *machine = MACHINE(qdev_get_machine()); |
| char *lp = object_property_get_str(OBJECT(machine), "loadparm", NULL); |
| |
| if (lp) { |
| int i; |
| |
| /* lp is an uppercase string without leading/embedded spaces */ |
| for (i = 0; i < 8 && lp[i]; i++) { |
| loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]]; |
| } |
| |
| if (i < 8) { |
| memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */ |
| } |
| |
| g_free(lp); |
| return 0; |
| } |
| |
| return -1; |
| } |
| |
| static int load_netboot_image(Error **errp) |
| { |
| MachineState *ms = MACHINE(qdev_get_machine()); |
| S390IPLState *ipl = get_ipl_device(); |
| char *netboot_filename; |
| MemoryRegion *sysmem = get_system_memory(); |
| MemoryRegion *mr = NULL; |
| void *ram_ptr = NULL; |
| int img_size = -1; |
| |
| mr = memory_region_find(sysmem, 0, 1).mr; |
| if (!mr) { |
| error_setg(errp, "Failed to find memory region at address 0"); |
| return -1; |
| } |
| |
| ram_ptr = memory_region_get_ram_ptr(mr); |
| if (!ram_ptr) { |
| error_setg(errp, "No RAM found"); |
| goto unref_mr; |
| } |
| |
| netboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->netboot_fw); |
| if (netboot_filename == NULL) { |
| error_setg(errp, "Could not find network bootloader '%s'", |
| ipl->netboot_fw); |
| goto unref_mr; |
| } |
| |
| img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL, |
| &ipl->start_addr, |
| NULL, NULL, NULL, 1, EM_S390, 0, 0, NULL, |
| false); |
| |
| if (img_size < 0) { |
| img_size = load_image_size(netboot_filename, ram_ptr, ms->ram_size); |
| ipl->start_addr = KERN_IMAGE_START; |
| } |
| |
| if (img_size < 0) { |
| error_setg(errp, "Failed to load network bootloader"); |
| } |
| |
| g_free(netboot_filename); |
| |
| unref_mr: |
| memory_region_unref(mr); |
| return img_size; |
| } |
| |
| static bool is_virtio_ccw_device_of_type(IplParameterBlock *iplb, |
| int virtio_id) |
| { |
| uint8_t cssid; |
| uint8_t ssid; |
| uint16_t devno; |
| uint16_t schid; |
| SubchDev *sch = NULL; |
| |
| if (iplb->pbt != S390_IPL_TYPE_CCW) { |
| return false; |
| } |
| |
| devno = be16_to_cpu(iplb->ccw.devno); |
| ssid = iplb->ccw.ssid & 3; |
| |
| for (schid = 0; schid < MAX_SCHID; schid++) { |
| for (cssid = 0; cssid < MAX_CSSID; cssid++) { |
| sch = css_find_subch(1, cssid, ssid, schid); |
| |
| if (sch && sch->devno == devno) { |
| return sch->id.cu_model == virtio_id; |
| } |
| } |
| } |
| return false; |
| } |
| |
| static bool is_virtio_net_device(IplParameterBlock *iplb) |
| { |
| return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_NET); |
| } |
| |
| static bool is_virtio_scsi_device(IplParameterBlock *iplb) |
| { |
| return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI); |
| } |
| |
| static void update_machine_ipl_properties(IplParameterBlock *iplb) |
| { |
| Object *machine = qdev_get_machine(); |
| Error *err = NULL; |
| |
| /* Sync loadparm */ |
| if (iplb->flags & DIAG308_FLAGS_LP_VALID) { |
| uint8_t *ebcdic_loadparm = iplb->loadparm; |
| char ascii_loadparm[9]; |
| int i; |
| |
| for (i = 0; i < 8 && ebcdic_loadparm[i]; i++) { |
| ascii_loadparm[i] = ebcdic2ascii[(uint8_t) ebcdic_loadparm[i]]; |
| } |
| ascii_loadparm[i] = 0; |
| object_property_set_str(machine, "loadparm", ascii_loadparm, &err); |
| } else { |
| object_property_set_str(machine, "loadparm", "", &err); |
| } |
| if (err) { |
| warn_report_err(err); |
| } |
| } |
| |
| void s390_ipl_update_diag308(IplParameterBlock *iplb) |
| { |
| S390IPLState *ipl = get_ipl_device(); |
| |
| /* |
| * The IPLB set and retrieved by subcodes 8/9 is completely |
| * separate from the one managed via subcodes 5/6. |
| */ |
| if (iplb->pbt == S390_IPL_TYPE_PV) { |
| ipl->iplb_pv = *iplb; |
| ipl->iplb_valid_pv = true; |
| } else { |
| ipl->iplb = *iplb; |
| ipl->iplb_valid = true; |
| } |
| ipl->netboot = is_virtio_net_device(iplb); |
| update_machine_ipl_properties(iplb); |
| } |
| |
| IplParameterBlock *s390_ipl_get_iplb_pv(void) |
| { |
| S390IPLState *ipl = get_ipl_device(); |
| |
| if (!ipl->iplb_valid_pv) { |
| return NULL; |
| } |
| return &ipl->iplb_pv; |
| } |
| |
| IplParameterBlock *s390_ipl_get_iplb(void) |
| { |
| S390IPLState *ipl = get_ipl_device(); |
| |
| if (!ipl->iplb_valid) { |
| return NULL; |
| } |
| return &ipl->iplb; |
| } |
| |
| void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type) |
| { |
| S390IPLState *ipl = get_ipl_device(); |
| |
| if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) { |
| /* use CPU 0 for full resets */ |
| ipl->reset_cpu_index = 0; |
| } else { |
| ipl->reset_cpu_index = cs->cpu_index; |
| } |
| ipl->reset_type = reset_type; |
| |
| if (reset_type == S390_RESET_REIPL && |
| ipl->iplb_valid && |
| !ipl->netboot && |
| ipl->iplb.pbt == S390_IPL_TYPE_CCW && |
| is_virtio_scsi_device(&ipl->iplb)) { |
| CcwDevice *ccw_dev = s390_get_ccw_device(get_boot_device(0), NULL); |
| |
| if (ccw_dev && |
| cpu_to_be16(ccw_dev->sch->devno) == ipl->iplb.ccw.devno && |
| (ccw_dev->sch->ssid & 3) == ipl->iplb.ccw.ssid) { |
| /* |
| * this is the original boot device's SCSI |
| * so restore IPL parameter info from it |
| */ |
| ipl->iplb_valid = s390_gen_initial_iplb(ipl); |
| } |
| } |
| if (reset_type == S390_RESET_MODIFIED_CLEAR || |
| reset_type == S390_RESET_LOAD_NORMAL || |
| reset_type == S390_RESET_PV) { |
| /* ignore -no-reboot, send no event */ |
| qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET); |
| } else { |
| qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); |
| } |
| /* as this is triggered by a CPU, make sure to exit the loop */ |
| if (tcg_enabled()) { |
| cpu_loop_exit(cs); |
| } |
| } |
| |
| void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type) |
| { |
| S390IPLState *ipl = get_ipl_device(); |
| |
| *cs = qemu_get_cpu(ipl->reset_cpu_index); |
| if (!*cs) { |
| /* use any CPU */ |
| *cs = first_cpu; |
| } |
| *reset_type = ipl->reset_type; |
| } |
| |
| void s390_ipl_clear_reset_request(void) |
| { |
| S390IPLState *ipl = get_ipl_device(); |
| |
| ipl->reset_type = S390_RESET_EXTERNAL; |
| /* use CPU 0 for full resets */ |
| ipl->reset_cpu_index = 0; |
| } |
| |
| static void s390_ipl_prepare_qipl(S390CPU *cpu) |
| { |
| S390IPLState *ipl = get_ipl_device(); |
| uint8_t *addr; |
| uint64_t len = 4096; |
| |
| addr = cpu_physical_memory_map(cpu->env.psa, &len, true); |
| if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) { |
| error_report("Cannot set QEMU IPL parameters"); |
| return; |
| } |
| memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters)); |
| cpu_physical_memory_unmap(addr, len, 1, len); |
| } |
| |
| int s390_ipl_prepare_pv_header(void) |
| { |
| IplParameterBlock *ipib = s390_ipl_get_iplb_pv(); |
| IPLBlockPV *ipib_pv = &ipib->pv; |
| void *hdr = g_malloc(ipib_pv->pv_header_len); |
| int rc; |
| |
| cpu_physical_memory_read(ipib_pv->pv_header_addr, hdr, |
| ipib_pv->pv_header_len); |
| rc = s390_pv_set_sec_parms((uintptr_t)hdr, |
| ipib_pv->pv_header_len); |
| g_free(hdr); |
| return rc; |
| } |
| |
| int s390_ipl_pv_unpack(void) |
| { |
| IplParameterBlock *ipib = s390_ipl_get_iplb_pv(); |
| IPLBlockPV *ipib_pv = &ipib->pv; |
| int i, rc = 0; |
| |
| for (i = 0; i < ipib_pv->num_comp; i++) { |
| rc = s390_pv_unpack(ipib_pv->components[i].addr, |
| TARGET_PAGE_ALIGN(ipib_pv->components[i].size), |
| ipib_pv->components[i].tweak_pref); |
| if (rc) { |
| break; |
| } |
| } |
| return rc; |
| } |
| |
| void s390_ipl_prepare_cpu(S390CPU *cpu) |
| { |
| S390IPLState *ipl = get_ipl_device(); |
| |
| cpu->env.psw.addr = ipl->start_addr; |
| cpu->env.psw.mask = IPL_PSW_MASK; |
| |
| if (!ipl->kernel || ipl->iplb_valid) { |
| cpu->env.psw.addr = ipl->bios_start_addr; |
| if (!ipl->iplb_valid) { |
| ipl->iplb_valid = s390_gen_initial_iplb(ipl); |
| } |
| } |
| if (ipl->netboot) { |
| load_netboot_image(&error_fatal); |
| ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr); |
| } |
| s390_ipl_set_boot_menu(ipl); |
| s390_ipl_prepare_qipl(cpu); |
| } |
| |
| static void s390_ipl_reset(DeviceState *dev) |
| { |
| S390IPLState *ipl = S390_IPL(dev); |
| |
| if (ipl->reset_type != S390_RESET_REIPL) { |
| ipl->iplb_valid = false; |
| memset(&ipl->iplb, 0, sizeof(IplParameterBlock)); |
| } |
| } |
| |
| static void s390_ipl_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| |
| dc->realize = s390_ipl_realize; |
| device_class_set_props(dc, s390_ipl_properties); |
| dc->reset = s390_ipl_reset; |
| dc->vmsd = &vmstate_ipl; |
| set_bit(DEVICE_CATEGORY_MISC, dc->categories); |
| /* Reason: Loads the ROMs and thus can only be used one time - internally */ |
| dc->user_creatable = false; |
| } |
| |
| static const TypeInfo s390_ipl_info = { |
| .class_init = s390_ipl_class_init, |
| .parent = TYPE_DEVICE, |
| .name = TYPE_S390_IPL, |
| .instance_size = sizeof(S390IPLState), |
| }; |
| |
| static void s390_ipl_register_types(void) |
| { |
| type_register_static(&s390_ipl_info); |
| } |
| |
| type_init(s390_ipl_register_types) |
