X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=hw%2Fs390x%2Fipl.c;h=f1042002731139a10348339d5db977713c8deaa9;hb=fbd3a489df9953e2a5d017c922f3c103b2426952;hp=b91fcc6e7971805ae0aa316ccd8ac7f39b45c252;hpb=8f04e88e2cd792e348eb54983ce1a485d5db4f27;p=mirror_qemu.git

diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
index b91fcc6e79..04245b5258 100644
--- a/hw/s390x/ipl.c
+++ b/hw/s390x/ipl.c
@@ -11,13 +11,22 @@
  *
  */
 
+#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"
+#include "qemu/config-file.h"
+#include "qemu/cutils.h"
+#include "qemu/option.h"
+#include "exec/exec-all.h"
 
 #define KERN_IMAGE_START                0x010000UL
 #define KERN_PARM_AREA                  0x010480UL
@@ -28,6 +37,24 @@
 #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,
@@ -37,6 +64,10 @@ static const VMStateDescription vmstate_iplb = {
         VMSTATE_UINT16(devno, IplParameterBlock),
         VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88),
         VMSTATE_END_OF_LIST()
+    },
+    .subsections = (const VMStateDescription*[]) {
+        &vmstate_iplb_extended,
+        NULL
     }
 };
 
@@ -45,8 +76,8 @@ static const VMStateDescription vmstate_ipl = {
     .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),
@@ -76,7 +107,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
     S390IPLState *ipl = S390_IPL(dev);
     uint64_t pentry = KERN_IMAGE_START;
     int kernel_size;
-    Error *l_err = NULL;
+    Error *err = NULL;
 
     int bios_size;
     char *bios_filename;
@@ -94,18 +125,18 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
 
         bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
         if (bios_filename == NULL) {
-            error_setg(&l_err, "could not find stage1 bootloader\n");
+            error_setg(&err, "could not find stage1 bootloader");
             goto error;
         }
 
         bios_size = load_elf(bios_filename, bios_translate_addr, &fwbase,
                              &ipl->bios_start_addr, NULL, NULL, 1,
-                             EM_S390, 0);
+                             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 (e.g. s390-zipl.rom) */
+            /* Try to load non-ELF file */
             bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START,
                                             4096);
             ipl->bios_start_addr = ZIPL_IMAGE_START;
@@ -113,7 +144,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
         g_free(bios_filename);
 
         if (bios_size == -1) {
-            error_setg(&l_err, "could not load bootloader '%s'\n", bios_name);
+            error_setg(&err, "could not load bootloader '%s'", bios_name);
             goto error;
         }
 
@@ -123,12 +154,12 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
 
     if (ipl->kernel) {
         kernel_size = load_elf(ipl->kernel, NULL, NULL, &pentry, NULL,
-                               NULL, 1, EM_S390, 0);
+                               NULL, 1, EM_S390, 0, 0);
         if (kernel_size < 0) {
             kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
         }
         if (kernel_size < 0) {
-            error_setg(&l_err, "could not load kernel '%s'\n", ipl->kernel);
+            error_setg(&err, "could not load kernel '%s'", ipl->kernel);
             goto error;
         }
         /*
@@ -156,7 +187,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
             initrd_size = load_image_targphys(ipl->initrd, initrd_offset,
                                               ram_size - initrd_offset);
             if (initrd_size == -1) {
-                error_setg(&l_err, "could not load initrd '%s'\n", ipl->initrd);
+                error_setg(&err, "could not load initrd '%s'", ipl->initrd);
                 goto error;
             }
 
@@ -168,9 +199,16 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
             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, l_err);
+    error_propagate(errp, err);
 }
 
 static Property s390_ipl_properties[] = {
@@ -178,47 +216,258 @@ static Property s390_ipl_properties[] = {
     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 void s390_ipl_set_boot_menu(S390IPLState *ipl)
 {
-    DeviceState *dev_st;
+    QemuOptsList *plist = qemu_find_opts("boot-opts");
+    QemuOpts *opts = QTAILQ_FIRST(&plist->head);
+    uint8_t *flags = &ipl->qipl.qipl_flags;
+    uint32_t *timeout = &ipl->qipl.boot_menu_timeout;
+    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;
+    }
 
-    if (ipl->iplb_valid) {
-        ipl->cssid = 0;
-        ipl->ssid = 0;
-        ipl->devno = ipl->iplb.devno;
-        goto out;
+    switch (ipl->iplb.pbt) {
+    case S390_IPL_TYPE_CCW:
+        /* In the absence of -boot menu, use zipl parameters */
+        if (!qemu_opt_get(opts, "menu")) {
+            *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 (ipl->kernel) {
-        return 0;
+    if (!boot_menu) {
+        return;
     }
 
+    *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");
+        *timeout = 0;
+        return;
+    }
+
+    if (splash_time > 0xffffffff) {
+        error_report("splash-time is too large, forcing it to max value");
+        *timeout = 0xffffffff;
+        return;
+    }
+
+    *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 *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;
+        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);
+
+        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);
+            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 {
+            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;
+    }
+
+    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;
-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 '%s'",
+                   ipl->netboot_fw);
+        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_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);
 }
 
 void s390_ipl_update_diag308(IplParameterBlock *iplb)
@@ -227,6 +476,7 @@ 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)
@@ -239,35 +489,111 @@ IplParameterBlock *s390_ipl_get_iplb(void)
     return &ipl->iplb;
 }
 
-void s390_reipl_request(void)
+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));
+
+        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);
+        }
+    }
+    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();
 
-    ipl->reipl_requested = true;
-    qemu_system_reset_request();
+    *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, 1);
+    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);
 }
 
 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);
+            exit(1);
+        }
+        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->reipl_requested) {
+    if (ipl->reset_type != S390_RESET_REIPL) {
         ipl->iplb_valid = false;
+        memset(&ipl->iplb, 0, sizeof(IplParameterBlock));
     }
-    ipl->reipl_requested = false;
 }
 
 static void s390_ipl_class_init(ObjectClass *klass, void *data)
@@ -279,6 +605,8 @@ static void s390_ipl_class_init(ObjectClass *klass, void *data)
     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 = {