diff options
Diffstat (limited to 'arch/powerpc/sysdev/mpic.c')
| -rw-r--r-- | arch/powerpc/sysdev/mpic.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index 20b73c025a45..7c1342618a30 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -1636,6 +1636,24 @@ void __devinit smp_mpic_setup_cpu(int cpu) { mpic_setup_this_cpu(); } + +void mpic_reset_core(int cpu) +{ + struct mpic *mpic = mpic_primary; + u32 pir; + int cpuid = get_hard_smp_processor_id(cpu); + + /* Set target bit for core reset */ + pir = mpic_read(mpic->gregs, MPIC_INFO(GREG_PROCESSOR_INIT)); + pir |= (1 << cpuid); + mpic_write(mpic->gregs, MPIC_INFO(GREG_PROCESSOR_INIT), pir); + mpic_read(mpic->gregs, MPIC_INFO(GREG_PROCESSOR_INIT)); + + /* Restore target bit after reset complete */ + pir &= ~(1 << cpuid); + mpic_write(mpic->gregs, MPIC_INFO(GREG_PROCESSOR_INIT), pir); + mpic_read(mpic->gregs, MPIC_INFO(GREG_PROCESSOR_INIT)); +} #endif /* CONFIG_SMP */ #ifdef CONFIG_PM |