diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2017-01-11 11:14:52 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-01-16 09:27:55 +0300 |
| commit | 89175cf766869307c4f57a7a5f63d2819e76c41b (patch) | |
| tree | 6046a08b5f2c1a012094053aa6287a76058b95c6 /arch/s390/include/asm/sclp.h | |
| parent | f0319748599183fa71a1e8792317385313ed946b (diff) | |
| download | linux-89175cf766869307c4f57a7a5f63d2819e76c41b.tar.xz | |
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 <oberpar@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/sclp.h')
| -rw-r--r-- | arch/s390/include/asm/sclp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h index 8db92a5b3bf1..415eaace3f1b 100644 --- a/arch/s390/include/asm/sclp.h +++ b/arch/s390/include/asm/sclp.h @@ -118,6 +118,7 @@ int memcpy_hsa_kernel(void *dest, unsigned long src, size_t count); int memcpy_hsa_user(void __user *dest, unsigned long src, size_t count); void sclp_early_detect(void); void _sclp_print_early(const char *); +void __sclp_print_early(const char *s, unsigned int len); void sclp_ocf_cpc_name_copy(char *dst); static inline int sclp_get_core_info(struct sclp_core_info *info, int early) |