s390x/ipl: Provide ipl parameter block

Right now we return the ipl parameter block only if the guest
specified one. Let's fill in the parameter block when bootindex
parameter is available and not booting from an external kernel.

Signed-off-by: Alexander Yarygin <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Signed-off-by: Cornelia Huck <[email protected]>

diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
index 236e2c937f734669f0c6d47449e32efae92e667c..9a73820fd1f18774f7299c4b075b97b39bcf6e13 100644 (file)
--- a/hw/s390x/ipl.c
+++ b/hw/s390x/ipl.c
@@ -238,6 +238,12 @@ static uint64_t s390_update_iplstate(S390IPLState *ipl)
             ipl->cssid = ccw_dev->sch->cssid;
             ipl->ssid = ccw_dev->sch->ssid;
             ipl->devno = ccw_dev->sch->devno;
+            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_valid = true;
             goto out;
         }
     }
@@ -292,6 +298,7 @@ static void s390_ipl_reset(DeviceState *dev)
 
     if (!ipl->reipl_requested) {
         ipl->iplb_valid = false;
+        memset(&ipl->iplb, 0, sizeof(IplParameterBlock));
     }
     ipl->reipl_requested = false;
 }

diff --git a/hw/s390x/ipl.h b/hw/s390x/ipl.h
index 08f1d5c385e2a568e1a9ebfb407239c17a5d7b28..0b7f6cbecb5e195248902c50423065eec04f9c8d 100644 (file)
--- a/hw/s390x/ipl.h
+++ b/hw/s390x/ipl.h
@@ -102,6 +102,7 @@ typedef struct S390IPLState S390IPLState;
 #define S390_IPL_TYPE_FCP 0x00
 #define S390_IPL_TYPE_CCW 0x02
 
+#define S390_IPLB_HEADER_LEN 8
 #define S390_IPLB_MIN_CCW_LEN 200
 #define S390_IPLB_MIN_FCP_LEN 384