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pc-bios/s390-ccw: add more disk layout checks

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Experiments showed possibility of few more "misconfigurations" in disk
layout. They are reported now.

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Eugene (jno) Dvurechenski 2015-09-17 12:41:36 +02:00 • committed by Cornelia Huck
parent 2538039f2c
commit b1be0972f9
2 changed files with 13 additions and 0 deletions
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4
pc-bios/s390-ccw/bootmap.c
View file

@ -415,7 +415,11 @@ static void ipl_scsi(void)
/* The 0-th block (MBR) was already read into sec[] */ /* The 0-th block (MBR) was already read into sec[] */
sclp_print("Using SCSI scheme.\n"); 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); debug_print_int("program table", mbr->blockptr.blockno);
IPL_assert(mbr->blockptr.blockno, "No Program Table");
/* Parse the program table */ /* Parse the program table */
read_block(mbr->blockptr.blockno, sec, read_block(mbr->blockptr.blockno, sec,

9
pc-bios/s390-ccw/bootmap.h
View file

@ -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] = static const unsigned char ebc2asc[256] =
/* 0123456789abcdef0123456789abcdef */ /* 0123456789abcdef0123456789abcdef */
"................................" /* 1F */ "................................" /* 1F */