Commit ba1509c0 authored by Dominik Dingel's avatar Dominik Dingel Committed by Alexander Graf
Browse files

S390: Add virtio-blk boot 



If no kernel IPL entry is specified, boot the bios and pass if available
device information for the first boot device (as given by the boot index).

The provided information will be used in the next commit from the BIOS.

Signed-off-by: default avatarDominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
parent 2c4c71ee

hw/s390x/ipl.c

+18 −0
Original line number Diff line number Diff line
@@ -16,6 +16,8 @@ 
#include "elf.h"

#include "hw/loader.h"

#include "hw/sysbus.h"

#include "hw/s390x/virtio-ccw.h"

#include "hw/s390x/css.h"



#define KERN_IMAGE_START                0x010000UL

#define KERN_PARM_AREA                  0x010480UL
@@ -150,6 +152,22 @@ static void s390_ipl_reset(DeviceState *dev) 


    env->psw.addr = ipl->start_addr;

    env->psw.mask = IPL_PSW_MASK;



    if (!ipl->kernel) {

        /* booting firmware, tell what device to boot from */

        DeviceState *dev_st = get_boot_device(0);

        VirtioCcwDevice *ccw_dev = (VirtioCcwDevice *) object_dynamic_cast(

                OBJECT(&(dev_st->parent_obj)), "virtio-blk-ccw");



        if (ccw_dev) {

            env->regs[7] = ccw_dev->sch->cssid << 24 |

                           ccw_dev->sch->ssid << 16 |

                           ccw_dev->sch->devno;

        } else {

            env->regs[7] = -1;

        }

    }



    s390_add_running_cpu(cpu);

}