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Diffstat (limited to 'arch/s390/kernel')
-rw-r--r--arch/s390/kernel/early.c3
-rw-r--r--arch/s390/kernel/setup.c25
2 files changed, 21 insertions, 7 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 8d15314381e..cae14c49951 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -208,6 +208,9 @@ static noinline __init void detect_machine_type(void)
machine_flags |= MACHINE_FLAG_KVM;
else
machine_flags |= MACHINE_FLAG_VM;
+
+ /* Store machine flags for setting up lowcore early */
+ S390_lowcore.machine_flags = machine_flags;
}
static __init void early_pgm_check_handler(void)
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 9717717c6fe..cbb897bc50b 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -154,6 +154,20 @@ static int __init condev_setup(char *str)
__setup("condev=", condev_setup);
+static void __init set_preferred_console(void)
+{
+ if (MACHINE_IS_KVM) {
+ add_preferred_console("hvc", 0, NULL);
+ s390_virtio_console_init();
+ return;
+ }
+
+ if (CONSOLE_IS_3215 || CONSOLE_IS_SCLP)
+ add_preferred_console("ttyS", 0, NULL);
+ if (CONSOLE_IS_3270)
+ add_preferred_console("tty3270", 0, NULL);
+}
+
static int __init conmode_setup(char *str)
{
#if defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
@@ -168,6 +182,7 @@ static int __init conmode_setup(char *str)
if (strncmp(str, "3270", 5) == 0)
SET_CONSOLE_3270;
#endif
+ set_preferred_console();
return 1;
}
@@ -780,9 +795,6 @@ static void __init setup_hwcaps(void)
void __init
setup_arch(char **cmdline_p)
{
- /* set up preferred console */
- add_preferred_console("ttyS", 0, NULL);
-
/*
* print what head.S has found out about the machine
*/
@@ -802,11 +814,9 @@ setup_arch(char **cmdline_p)
if (MACHINE_IS_VM)
pr_info("Linux is running as a z/VM "
"guest operating system in 64-bit mode\n");
- else if (MACHINE_IS_KVM) {
+ else if (MACHINE_IS_KVM)
pr_info("Linux is running under KVM in 64-bit mode\n");
- add_preferred_console("hvc", 0, NULL);
- s390_virtio_console_init();
- } else
+ else
pr_info("Linux is running natively in 64-bit mode\n");
#endif /* CONFIG_64BIT */
@@ -851,6 +861,7 @@ setup_arch(char **cmdline_p)
/* Setup default console */
conmode_default();
+ set_preferred_console();
/* Setup zfcpdump support */
setup_zfcpdump(console_devno);