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Diffstat (limited to 'arch/s390/kernel/early.c')
| -rw-r--r-- | arch/s390/kernel/early.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 6312fed48530..b432d63d0b37 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -32,6 +32,21 @@ #include <asm/boot_data.h> #include "entry.h" +static void __init reset_tod_clock(void) +{ + u64 time; + + if (store_tod_clock(&time) == 0) + return; + /* TOD clock not running. Set the clock to Unix Epoch. */ + if (set_tod_clock(TOD_UNIX_EPOCH) != 0 || store_tod_clock(&time) != 0) + disabled_wait(); + + memset(tod_clock_base, 0, 16); + *(__u64 *) &tod_clock_base[1] = TOD_UNIX_EPOCH; + S390_lowcore.last_update_clock = TOD_UNIX_EPOCH; +} + /* * Initialize storage key for kernel pages */ @@ -301,6 +316,7 @@ static void __init check_image_bootable(void) void __init startup_init(void) { + reset_tod_clock(); check_image_bootable(); time_early_init(); init_kernel_storage_key(); |