diff options
| -rw-r--r-- | arch/s390/kernel/als.c | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/arch/s390/kernel/als.c b/arch/s390/kernel/als.c index f96a577972c4..0eff858c2434 100644 --- a/arch/s390/kernel/als.c +++ b/arch/s390/kernel/als.c @@ -19,6 +19,38 @@ static unsigned long als[] __initdata = { FACILITIES_ALS }; +static void __init u16_to_hex(char *str, u16 val) +{ + int i, num; + + for (i = 1; i <= 4; i++) { + num = (val >> (16 - 4 * i)) & 0xf; + if (num >= 10) + num += 7; + *str++ = '0' + num; + } + *str = '\0'; +} + +static void __init print_machine_type(void) +{ + static char mach_str[80] __initdata = "Detected machine-type number: "; + char type_str[5]; + struct cpuid id; + + get_cpu_id(&id); + u16_to_hex(type_str, id.machine); + strcat(mach_str, type_str); + _sclp_print_early(mach_str); +} + +static void __init facility_mismatch(void) +{ + _sclp_print_early("The Linux kernel requires more recent processor hardware"); + print_machine_type(); + disabled_wait(0x8badcccc); +} + void __init verify_facilities(void) { int i; @@ -38,9 +70,7 @@ void __init verify_facilities(void) : "memory", "cc"); } for (i = 0; i < ARRAY_SIZE(als); i++) { - if ((S390_lowcore.stfle_fac_list[i] & als[i]) == als[i]) - continue; - _sclp_print_early("The Linux kernel requires more recent processor hardware"); - disabled_wait(0x8badcccc); + if ((S390_lowcore.stfle_fac_list[i] & als[i]) != als[i]) + facility_mismatch(); } } |