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-rw-r--r--pc-bios/s390-ccw/start.S2
1 files changed, 2 insertions, 0 deletions
diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S
index 09deee7fc0..5d5df0d616 100644
--- a/pc-bios/s390-ccw/start.S
+++ b/pc-bios/s390-ccw/start.S
@@ -14,6 +14,8 @@
_start:
larl %r15, stack + 0x8000 /* Set up stack */
+larl %r6, boot_value
+stg %r7, 0(%r6) /* save the boot_value before any function calls */
j main /* And call C */
/*