diff options
Diffstat (limited to 'arch/arm/include/asm/mcpm.h')
| -rw-r--r-- | arch/arm/include/asm/mcpm.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mcpm.h b/arch/arm/include/asm/mcpm.h index d428e386c88e..3446f6a1d9fa 100644 --- a/arch/arm/include/asm/mcpm.h +++ b/arch/arm/include/asm/mcpm.h @@ -219,6 +219,23 @@ void __mcpm_outbound_leave_critical(unsigned int cluster, int state); bool __mcpm_outbound_enter_critical(unsigned int this_cpu, unsigned int cluster); int __mcpm_cluster_state(unsigned int cluster); +/** + * mcpm_sync_init - Initialize the cluster synchronization support + * + * @power_up_setup: platform specific function invoked during very + * early CPU/cluster bringup stage. + * + * This prepares memory used by vlocks and the MCPM state machine used + * across CPUs that may have their caches active or inactive. Must be + * called only after a successful call to mcpm_platform_register(). + * + * The power_up_setup argument is a pointer to assembly code called when + * the MMU and caches are still disabled during boot and no stack space is + * available. The affinity level passed to that code corresponds to the + * resource that needs to be initialized (e.g. 1 for cluster level, 0 for + * CPU level). Proper exclusion mechanisms are already activated at that + * point. + */ int __init mcpm_sync_init( void (*power_up_setup)(unsigned int affinity_level)); |