diff options
Diffstat (limited to 'hw/s390x/ipl.c')
| -rw-r--r-- | hw/s390x/ipl.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c index 2e2664f22e..7978c7d52a 100644 --- a/hw/s390x/ipl.c +++ b/hw/s390x/ipl.c @@ -20,6 +20,7 @@ #include "hw/s390x/virtio-ccw.h" #include "hw/s390x/css.h" #include "ipl.h" +#include "qemu/error-report.h" #define KERN_IMAGE_START 0x010000UL #define KERN_PARM_AREA 0x010480UL @@ -209,6 +210,7 @@ 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), @@ -226,6 +228,12 @@ static bool s390_gen_initial_iplb(S390IPLState *ipl) TYPE_VIRTIO_CCW_DEVICE); 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); @@ -258,12 +266,86 @@ static bool s390_gen_initial_iplb(S390IPLState *ipl) return false; } +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) { S390IPLState *ipl = get_ipl_device(); ipl->iplb = *iplb; ipl->iplb_valid = true; + ipl->netboot = is_virtio_net_device(iplb); } IplParameterBlock *s390_ipl_get_iplb(void) @@ -287,6 +369,7 @@ void s390_reipl_request(void) 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; @@ -297,6 +380,13 @@ void s390_ipl_prepare_cpu(S390CPU *cpu) 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; + } } static void s390_ipl_reset(DeviceState *dev) |