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authorThomas Huth <thuth@redhat.com>2020-07-28 18:14:50 +0200
committerThomas Huth <thuth@redhat.com>2020-10-06 19:36:50 +0200
commit5dc739f343cd06ecb9b058294564ce7504856f3f (patch)
treebedcbf8891dac6398b3b9e16f2684d68093cb1d2 /pc-bios
parent869d0e2f593dd37297c366203f006b9acd1b7b45 (diff)
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pc-bios/s390-ccw: Allow booting in case the first virtio-blk disk is bad
If you try to boot with two virtio-blk disks (without bootindex), and only the second one is bootable, the s390-ccw bios currently stops at the first disk and does not continue booting from the second one. This is annoying - and all other major QEMU firmwares succeed to boot from the second disk in this case, so we should do the same in the s390-ccw bios, too. Reviewed-by: Cornelia Huck <cohuck@redhat.com> Message-Id: <20200806105349.632-8-thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'pc-bios')
-rw-r--r--pc-bios/s390-ccw/bootmap.c34
-rw-r--r--pc-bios/s390-ccw/main.c2
2 files changed, 24 insertions, 12 deletions
diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
index 9720567..0ef6b85 100644
--- a/pc-bios/s390-ccw/bootmap.c
+++ b/pc-bios/s390-ccw/bootmap.c
@@ -289,11 +289,18 @@ static void ipl_eckd_cdl(void)
read_block(1, ipl2, "Cannot read IPL2 record at block 1");
mbr = &ipl2->mbr;
- IPL_assert(magic_match(mbr, ZIPL_MAGIC), "No zIPL section in IPL2 record.");
- IPL_assert(block_size_ok(mbr->blockptr.xeckd.bptr.size),
- "Bad block size in zIPL section of IPL2 record.");
- IPL_assert(mbr->dev_type == DEV_TYPE_ECKD,
- "Non-ECKD device type in zIPL section of IPL2 record.");
+ if (!magic_match(mbr, ZIPL_MAGIC)) {
+ sclp_print("No zIPL section in IPL2 record.\n");
+ return;
+ }
+ if (!block_size_ok(mbr->blockptr.xeckd.bptr.size)) {
+ sclp_print("Bad block size in zIPL section of IPL2 record.\n");
+ return;
+ }
+ if (!mbr->dev_type == DEV_TYPE_ECKD) {
+ sclp_print("Non-ECKD device type in zIPL section of IPL2 record.\n");
+ return;
+ }
/* save pointer to Boot Map Table */
bmt_block_nr = eckd_block_num(&mbr->blockptr.xeckd.bptr.chs);
@@ -303,10 +310,14 @@ static void ipl_eckd_cdl(void)
memset(sec, FREE_SPACE_FILLER, sizeof(sec));
read_block(2, vlbl, "Cannot read Volume Label at block 2");
- IPL_assert(magic_match(vlbl->key, VOL1_MAGIC),
- "Invalid magic of volume label block");
- IPL_assert(magic_match(vlbl->f.key, VOL1_MAGIC),
- "Invalid magic of volser block");
+ if (!magic_match(vlbl->key, VOL1_MAGIC)) {
+ sclp_print("Invalid magic of volume label block.\n");
+ return;
+ }
+ if (!magic_match(vlbl->f.key, VOL1_MAGIC)) {
+ sclp_print("Invalid magic of volser block.\n");
+ return;
+ }
print_volser(vlbl->f.volser);
run_eckd_boot_script(bmt_block_nr, s1b_block_nr);
@@ -398,7 +409,8 @@ static void ipl_eckd(void)
read_block(0, mbr, "Cannot read block 0 on DASD");
if (magic_match(mbr->magic, IPL1_MAGIC)) {
- ipl_eckd_cdl(); /* no return */
+ ipl_eckd_cdl(); /* only returns in case of error */
+ return;
}
/* LDL/CMS? */
@@ -825,5 +837,5 @@ void zipl_load(void)
panic("\n! Unknown IPL device type !\n");
}
- panic("\n* this can never happen *\n");
+ sclp_print("zIPL load failed.\n");
}
diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c
index 9b58107..fc17e6a 100644
--- a/pc-bios/s390-ccw/main.c
+++ b/pc-bios/s390-ccw/main.c
@@ -240,7 +240,7 @@ static void ipl_boot_device(void)
break;
case CU_TYPE_VIRTIO:
if (virtio_setup() == 0) {
- zipl_load(); /* no return */
+ zipl_load(); /* Only returns in case of errors */
}
break;
default: