[PATCH v9 27/30] hw/s390x/ipl: Handle secure boot without specifying a boot device

[Zhuoying Cai <zycai@linux.ibm.com>]

If secure boot in audit mode or True Secure IPL mode is enabled without
specifying a boot device, the boot process will terminate with an error.

Signed-off-by: Zhuoying Cai <zycai@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 hw/s390x/ipl.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
index e46e655ef1..00ddfcf858 100644
--- a/hw/s390x/ipl.c
+++ b/hw/s390x/ipl.c
@@ -799,6 +799,16 @@ void s390_ipl_prepare_cpu(S390CPU *cpu)
         cpu->env.psw.addr = ipl->bios_start_addr;
         if (!ipl->iplb_valid) {
             ipl->iplb_valid = s390_init_all_iplbs(ipl);
+
+            /*
+             * Secure IPL without specifying a boot device.
+             * IPLB is not generated if no boot device is defined.
+             */
+            if ((s390_has_certificate() || s390_secure_boot_enabled()) &&
+                !ipl->iplb_valid) {
+                error_report("No boot device defined for Secure IPL");
+                exit(1);
+            }
         } else {
             ipl->qipl.chain_len = 0;
         }
-- 
2.53.0