*/
#include "qemu/osdep.h"
+#include "qapi/error.h"
#include "sysemu/sysemu.h"
#include "cpu.h"
#include "elf.h"
#include "hw/loader.h"
+#include "hw/boards.h"
#include "hw/s390x/virtio-ccw.h"
#include "hw/s390x/css.h"
+#include "hw/s390x/ebcdic.h"
#include "ipl.h"
+#include "qemu/error-report.h"
#define KERN_IMAGE_START 0x010000UL
#define KERN_PARM_AREA 0x010480UL
#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,
VMSTATE_UINT16(devno, IplParameterBlock),
VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88),
VMSTATE_END_OF_LIST()
+ },
+ .subsections = (const VMStateDescription*[]) {
+ &vmstate_iplb_extended,
+ NULL
}
};
.version_id = 0,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
- VMSTATE_UINT64(start_addr, S390IPLState),
- VMSTATE_UINT64(bios_start_addr, S390IPLState),
+ 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),
/* Adjust ELF start address to final location */
ipl->bios_start_addr += fwbase;
} else {
- /* Try to load non-ELF file (e.g. s390-ccw.img) */
+ /* Try to load non-ELF file */
bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START,
4096);
ipl->bios_start_addr = ZIPL_IMAGE_START;
stq_p(rom_ptr(INITRD_PARM_SIZE), 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;
qemu_register_reset(qdev_reset_all_fn, dev);
error:
error_propagate(errp, err);
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(),
};
-/*
- * In addition to updating the iplstate, this function returns:
- * - 0 if system was ipled with external kernel
- * - -1 if no valid boot device was found
- * - ccw id of the boot device otherwise
- */
-static uint64_t s390_update_iplstate(S390IPLState *ipl)
+static bool s390_gen_initial_iplb(S390IPLState *ipl)
{
DeviceState *dev_st;
- if (ipl->iplb_valid) {
- ipl->cssid = 0;
- ipl->ssid = 0;
- ipl->devno = ipl->iplb.devno;
- goto out;
- }
-
- if (ipl->kernel) {
- return 0;
- }
-
dev_st = get_boot_device(0);
if (dev_st) {
- VirtioCcwDevice *ccw_dev = (VirtioCcwDevice *) object_dynamic_cast(
- OBJECT(qdev_get_parent_bus(dev_st)->parent),
+ VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *)
+ object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent),
TYPE_VIRTIO_CCW_DEVICE);
- if (ccw_dev) {
- ipl->cssid = ccw_dev->sch->cssid;
- ipl->ssid = ccw_dev->sch->ssid;
- ipl->devno = ccw_dev->sch->devno;
- goto out;
+ 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;
+ }
+
+ 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;
+ } else {
+ return false; /* unknown device */
+ }
+
+ 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]];
}
+
+ g_free(lp);
+ return 0;
}
return -1;
-out:
- return (uint32_t) (ipl->cssid << 24 | ipl->ssid << 16 | ipl->devno);
+}
+
+static int load_netboot_image(Error **errp)
+{
+ 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");
+ goto unref_mr;
+ }
+
+ img_size = load_elf_ram(netboot_filename, NULL, NULL, &ipl->start_addr,
+ NULL, NULL, 1, EM_S390, 0, 0, NULL, false);
+
+ if (img_size < 0) {
+ img_size = load_image_size(netboot_filename, ram_ptr, 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_net_device(IplParameterBlock *iplb)
+{
+ 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_NET;
+ }
+ }
+ }
+ return false;
}
void s390_ipl_update_diag308(IplParameterBlock *iplb)
ipl->iplb = *iplb;
ipl->iplb_valid = true;
+ ipl->netboot = is_virtio_net_device(iplb);
}
IplParameterBlock *s390_ipl_get_iplb(void)
S390IPLState *ipl = get_ipl_device();
ipl->reipl_requested = true;
- qemu_system_reset_request();
+ qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
}
void s390_ipl_prepare_cpu(S390CPU *cpu)
{
S390IPLState *ipl = get_ipl_device();
+ Error *err = NULL;
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;
- cpu->env.regs[7] = s390_update_iplstate(ipl);
+ if (!ipl->iplb_valid) {
+ ipl->iplb_valid = s390_gen_initial_iplb(ipl);
+ }
+ }
+ if (ipl->netboot) {
+ if (load_netboot_image(&err) < 0) {
+ error_report_err(err);
+ vm_stop(RUN_STATE_INTERNAL_ERROR);
+ }
+ ipl->iplb.ccw.netboot_start_addr = ipl->start_addr;
}
}
if (!ipl->reipl_requested) {
ipl->iplb_valid = false;
+ memset(&ipl->iplb, 0, sizeof(IplParameterBlock));
}
ipl->reipl_requested = false;
}
projects / qemu.git / blobdiff