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Diffstat (limited to 'hw/s390x/ipl.c')
-rw-r--r--hw/s390x/ipl.c81
1 files changed, 51 insertions, 30 deletions
diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
index fdeaec3..58e33c5 100644
--- a/hw/s390x/ipl.c
+++ b/hw/s390x/ipl.c
@@ -279,44 +279,52 @@ static void s390_ipl_set_boot_menu(S390IPLState *ipl)
*timeout = cpu_to_be32(splash_time);
}
+static CcwDevice *s390_get_ccw_device(DeviceState *dev_st)
+{
+ CcwDevice *ccw_dev = NULL;
+
+ if (dev_st) {
+ VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *)
+ object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent),
+ TYPE_VIRTIO_CCW_DEVICE);
+ if (virtio_ccw_dev) {
+ ccw_dev = CCW_DEVICE(virtio_ccw_dev);
+ } 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);
+ }
+ }
+ }
+ return ccw_dev;
+}
+
static bool s390_gen_initial_iplb(S390IPLState *ipl)
{
DeviceState *dev_st;
+ CcwDevice *ccw_dev = NULL;
dev_st = get_boot_device(0);
if (dev_st) {
- VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *)
- object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent),
- TYPE_VIRTIO_CCW_DEVICE);
+ ccw_dev = s390_get_ccw_device(dev_st);
+ }
+
+ /*
+ * Currently allow IPL only from CCW devices.
+ */
+ if (ccw_dev) {
SCSIDevice *sd = (SCSIDevice *) object_dynamic_cast(OBJECT(dev_st),
TYPE_SCSI_DEVICE);
- VirtIONet *vn = (VirtIONet *) object_dynamic_cast(OBJECT(dev_st),
- TYPE_VIRTIO_NET);
-
- if (vn) {
- ipl->netboot = true;
- }
- if (virtio_ccw_dev) {
- CcwDevice *ccw_dev = CCW_DEVICE(virtio_ccw_dev);
-
- 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;
- } else if (sd) {
- SCSIBus *bus = scsi_bus_from_device(sd);
- VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus);
- VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, vdev);
- CcwDevice *ccw_dev;
-
- ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw),
- TYPE_CCW_DEVICE);
- if (!ccw_dev) { /* It might be a PCI device instead */
- return false;
- }
+ if (sd) {
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);
@@ -327,12 +335,25 @@ static bool s390_gen_initial_iplb(S390IPLState *ipl)
ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno);
ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3;
} else {
- return false; /* unknown device */
+ VirtIONet *vn = (VirtIONet *) object_dynamic_cast(OBJECT(dev_st),
+ TYPE_VIRTIO_NET);
+
+ 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;
+
+ if (vn) {
+ ipl->netboot = true;
+ }
}
if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) {
ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID;
}
+
return true;
}