From ba1509c0a99ad4c852c22cbd46d244ec7dc90402 Mon Sep 17 00:00:00 2001 From: Dominik Dingel Date: Tue, 30 Apr 2013 07:15:57 +0000 Subject: [PATCH] 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: Dominik Dingel Signed-off-by: Alexander Graf --- hw/s390x/ipl.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c index d14c548..0aeb003 100644 --- a/hw/s390x/ipl.c +++ b/hw/s390x/ipl.c @@ -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); } -- 2.7.4