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From e46aaac6f1ad67753face896e827ad1da920b9e5 Mon Sep 17 00:00:00 2001
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From: Thomas Huth <thuth@redhat.com>
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Date: Fri, 9 Oct 2020 10:08:47 -0400
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Subject: [PATCH 11/14] pc-bios/s390-ccw: Allow booting in case the first
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virtio-blk disk is bad
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RH-Author: Thomas Huth <thuth@redhat.com>
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Message-id: <20201009100849.264994-8-thuth@redhat.com>
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Patchwork-id: 98601
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O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 7/9] pc-bios/s390-ccw: Allow booting in case the first virtio-blk disk is bad
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Bugzilla: 1846975
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RH-Acked-by: Jens Freimann <jfreimann@redhat.com>
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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If you try to boot with two virtio-blk disks (without bootindex), and
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only the second one is bootable, the s390-ccw bios currently stops at
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the first disk and does not continue booting from the second one. This
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is annoying - and all other major QEMU firmwares succeed to boot from
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the second disk in this case, so we should do the same in the s390-ccw
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bios, too.
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Reviewed-by: Cornelia Huck <cohuck@redhat.com>
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Message-Id: <20200806105349.632-8-thuth@redhat.com>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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(cherry picked from commit 5dc739f343cd06ecb9b058294564ce7504856f3f)
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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pc-bios/s390-ccw/bootmap.c | 34 +++++++++++++++++++++++-----------
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pc-bios/s390-ccw/main.c | 2 +-
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2 files changed, 24 insertions(+), 12 deletions(-)
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diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
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index d13b7cbd15..e91ea719ff 100644
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--- a/pc-bios/s390-ccw/bootmap.c
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+++ b/pc-bios/s390-ccw/bootmap.c
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@@ -289,11 +289,18 @@ static void ipl_eckd_cdl(void)
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read_block(1, ipl2, "Cannot read IPL2 record at block 1");
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mbr = &ipl2->mbr;
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- IPL_assert(magic_match(mbr, ZIPL_MAGIC), "No zIPL section in IPL2 record.");
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- IPL_assert(block_size_ok(mbr->blockptr.xeckd.bptr.size),
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- "Bad block size in zIPL section of IPL2 record.");
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- IPL_assert(mbr->dev_type == DEV_TYPE_ECKD,
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- "Non-ECKD device type in zIPL section of IPL2 record.");
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+ if (!magic_match(mbr, ZIPL_MAGIC)) {
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+ sclp_print("No zIPL section in IPL2 record.\n");
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+ return;
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+ }
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+ if (!block_size_ok(mbr->blockptr.xeckd.bptr.size)) {
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+ sclp_print("Bad block size in zIPL section of IPL2 record.\n");
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+ return;
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+ }
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+ if (!mbr->dev_type == DEV_TYPE_ECKD) {
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+ sclp_print("Non-ECKD device type in zIPL section of IPL2 record.\n");
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+ return;
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+ }
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/* save pointer to Boot Map Table */
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bmt_block_nr = eckd_block_num(&mbr->blockptr.xeckd.bptr.chs);
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@@ -303,10 +310,14 @@ static void ipl_eckd_cdl(void)
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memset(sec, FREE_SPACE_FILLER, sizeof(sec));
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read_block(2, vlbl, "Cannot read Volume Label at block 2");
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- IPL_assert(magic_match(vlbl->key, VOL1_MAGIC),
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- "Invalid magic of volume label block");
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- IPL_assert(magic_match(vlbl->f.key, VOL1_MAGIC),
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- "Invalid magic of volser block");
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+ if (!magic_match(vlbl->key, VOL1_MAGIC)) {
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+ sclp_print("Invalid magic of volume label block.\n");
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+ return;
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+ }
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+ if (!magic_match(vlbl->f.key, VOL1_MAGIC)) {
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+ sclp_print("Invalid magic of volser block.\n");
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+ return;
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+ }
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print_volser(vlbl->f.volser);
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run_eckd_boot_script(bmt_block_nr, s1b_block_nr);
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@@ -400,7 +411,8 @@ static void ipl_eckd(void)
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read_block(0, mbr, "Cannot read block 0 on DASD");
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if (magic_match(mbr->magic, IPL1_MAGIC)) {
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- ipl_eckd_cdl(); /* no return */
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+ ipl_eckd_cdl(); /* only returns in case of error */
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+ return;
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}
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/* LDL/CMS? */
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@@ -827,5 +839,5 @@ void zipl_load(void)
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panic("\n! Unknown IPL device type !\n");
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}
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- panic("\n* this can never happen *\n");
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+ sclp_print("zIPL load failed.\n");
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}
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diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c
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index 5c1c98341d..b5c721c395 100644
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--- a/pc-bios/s390-ccw/main.c
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+++ b/pc-bios/s390-ccw/main.c
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@@ -249,7 +249,7 @@ static void ipl_boot_device(void)
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break;
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case CU_TYPE_VIRTIO:
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if (virtio_setup() == 0) {
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- zipl_load(); /* no return */
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+ zipl_load(); /* Only returns in case of errors */
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}
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break;
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default:
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--
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2.27.0
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