diff options
Diffstat (limited to 'arch/s390/kernel/setup.c')
| -rw-r--r-- | arch/s390/kernel/setup.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 7402b6a39ea..cbb897bc50b 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -42,6 +42,7 @@ #include <linux/ctype.h> #include <linux/reboot.h> #include <linux/topology.h> +#include <linux/ftrace.h> #include <asm/ipl.h> #include <asm/uaccess.h> @@ -153,6 +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) @@ -167,6 +182,7 @@ static int __init conmode_setup(char *str) if (strncmp(str, "3270", 5) == 0) SET_CONSOLE_3270; #endif + set_preferred_console(); return 1; } @@ -442,6 +458,7 @@ setup_lowcore(void) lc->steal_timer = S390_lowcore.steal_timer; lc->last_update_timer = S390_lowcore.last_update_timer; lc->last_update_clock = S390_lowcore.last_update_clock; + lc->ftrace_func = S390_lowcore.ftrace_func; set_prefix((u32)(unsigned long) lc); lowcore_ptr[0] = lc; } @@ -778,9 +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 */ @@ -800,11 +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 */ @@ -849,6 +861,7 @@ setup_arch(char **cmdline_p) /* Setup default console */ conmode_default(); + set_preferred_console(); /* Setup zfcpdump support */ setup_zfcpdump(console_devno); |