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-rw-r--r--pc-bios/s390-ccw/bootmap.c4
-rw-r--r--pc-bios/s390-ccw/bootmap.h9
2 files changed, 13 insertions, 0 deletions
diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
index 492530275d..ca60c333e3 100644
--- a/pc-bios/s390-ccw/bootmap.c
+++ b/pc-bios/s390-ccw/bootmap.c
@@ -415,7 +415,11 @@ static void ipl_scsi(void)
/* The 0-th block (MBR) was already read into sec[] */
sclp_print("Using SCSI scheme.\n");
+ debug_print_int("MBR Version", mbr->version_id);
+ IPL_check(mbr->version_id == 1,
+ "Unknown MBR layout version, assuming version 1");
debug_print_int("program table", mbr->blockptr.blockno);
+ IPL_assert(mbr->blockptr.blockno, "No Program Table");
/* Parse the program table */
read_block(mbr->blockptr.blockno, sec,
diff --git a/pc-bios/s390-ccw/bootmap.h b/pc-bios/s390-ccw/bootmap.h
index f98765b841..07e3b20b7a 100644
--- a/pc-bios/s390-ccw/bootmap.h
+++ b/pc-bios/s390-ccw/bootmap.h
@@ -273,6 +273,15 @@ static inline void IPL_assert(bool term, const char *message)
}
}
+static inline void IPL_check(bool term, const char *message)
+{
+ if (!term) {
+ sclp_print("\n! WARNING: ");
+ sclp_print(message);
+ sclp_print(" !\n");
+ }
+}
+
static const unsigned char ebc2asc[256] =
/* 0123456789abcdef0123456789abcdef */
"................................" /* 1F */