diff options
Diffstat (limited to 'lib/psci/psci_private.h')
| -rw-r--r-- | lib/psci/psci_private.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/lib/psci/psci_private.h b/lib/psci/psci_private.h index ca8291e4..7f0204ad 100644 --- a/lib/psci/psci_private.h +++ b/lib/psci/psci_private.h @@ -38,6 +38,29 @@ #include <psci.h> #include <spinlock.h> +#if HW_ASSISTED_COHERENCY +/* + * On systems with hardware-assisted coherency, make PSCI cache operations NOP, + * as PSCI participants are cache-coherent, and there's no need for explicit + * cache maintenance operations or barriers to coordinate their state. + */ +#define psci_flush_dcache_range(addr, size) +#define psci_flush_cpu_data(member) +#define psci_inv_cpu_data(member) + +#define psci_dsbish() +#else +/* + * If not all PSCI participants are cache-coherent, perform cache maintenance + * and issue barriers wherever required to coordinate state. + */ +#define psci_flush_dcache_range(addr, size) flush_dcache_range(addr, size) +#define psci_flush_cpu_data(member) flush_cpu_data(member) +#define psci_inv_cpu_data(member) inv_cpu_data(member) + +#define psci_dsbish() dsbish() +#endif + /* * The following helper macros abstract the interface to the Bakery * Lock API. |