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-rw-r--r--hw/s390x/ipl.c777
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diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
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--- /dev/null
+++ b/hw/s390x/ipl.c
@@ -0,0 +1,777 @@
+/*
+ * 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-common.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 "ipl.h"
+#include "qemu/error-report.h"
+#include "qemu/config-file.h"
+#include "qemu/cutils.h"
+#include "qemu/option.h"
+#include "exec/exec-all.h"
+
+#define KERN_IMAGE_START 0x010000UL
+#define LINUX_MAGIC_ADDR 0x010008UL
+#define KERN_PARM_AREA 0x010480UL
+#define 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 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) {
+ if (cmdline_size > KERN_PARM_AREA_SIZE) {
+ error_setg(errp,
+ "kernel command line exceeds maximum size: %zu > %lu",
+ cmdline_size, KERN_PARM_AREA_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)
+{
+ QemuOptsList *plist = qemu_find_opts("boot-opts");
+ QemuOpts *opts = QTAILQ_FIRST(&plist->head);
+ const char *tmp;
+ unsigned long splash_time = 0;
+
+ if (!get_boot_device(0)) {
+ if (boot_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 (!qemu_opt_get(opts, "menu")) {
+ ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL;
+ return;
+ }
+ break;
+ case S390_IPL_TYPE_QEMU_SCSI:
+ break;
+ default:
+ if (boot_menu) {
+ error_report("boot menu is not supported for this device type");
+ }
+ return;
+ }
+
+ if (!boot_menu) {
+ return;
+ }
+
+ ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD;
+
+ tmp = qemu_opt_get(opts, "splash-time");
+
+ if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) {
+ error_report("splash-time is invalid, forcing it to 0");
+ ipl->qipl.boot_menu_timeout = 0;
+ return;
+ }
+
+ 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 *bus = scsi_bus_from_device(sd);
+ VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus);
+ VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw,
+ vdev);
+
+ ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw),
+ TYPE_CCW_DEVICE);
+ 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)