From 89175cf766869307c4f57a7a5f63d2819e76c41b Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 11 Jan 2017 09:14:52 +0100 Subject: s390: provide sclp based boot console Use the early sclp code to provide a boot console. This boot console is available if the kernel parameter "earlyprintk" has been specified, just like it works for other architectures that also provide an early boot console. This makes debugging of early problems much easier, since now we finally have working console output even before memory detection is running. The boot console will be automatically disabled as soon as another console will be registered. Reviewed-by: Peter Oberparleiter Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/Kconfig.debug | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/s390/Kconfig.debug') diff --git a/arch/s390/Kconfig.debug b/arch/s390/Kconfig.debug index 26c5d5beb4be..32b3e3bfd022 100644 --- a/arch/s390/Kconfig.debug +++ b/arch/s390/Kconfig.debug @@ -20,4 +20,8 @@ config S390_PTDUMP config DEBUG_SET_MODULE_RONX def_bool y depends on MODULES + +config EARLY_PRINTK + def_bool y + endmenu -- cgit v1.2.3