diff options
| -rw-r--r-- | arch/arc/kernel/process.c | 13 | ||||
| -rw-r--r-- | arch/arc/plat-eznps/include/plat/ctop.h | 1 |
2 files changed, 13 insertions, 1 deletions
diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c index fd5b2190a957..5c631a111240 100644 --- a/arch/arc/kernel/process.c +++ b/arch/arc/kernel/process.c @@ -92,7 +92,18 @@ void arch_cpu_idle(void) :"I"(arg)); /* can't be "r" has to be embedded const */ } -#else +#elif defined(CONFIG_EZNPS_MTM_EXT) /* ARC700 variant in NPS */ + +void arch_cpu_idle(void) +{ + /* only the calling HW thread needs to sleep */ + __asm__ __volatile__( + ".word %0 \n" + : + :"i"(CTOP_INST_HWSCHD_WFT_IE12)); +} + +#else /* ARC700 */ void arch_cpu_idle(void) { diff --git a/arch/arc/plat-eznps/include/plat/ctop.h b/arch/arc/plat-eznps/include/plat/ctop.h index ee2e32df5e90..7729d3d18300 100644 --- a/arch/arc/plat-eznps/include/plat/ctop.h +++ b/arch/arc/plat-eznps/include/plat/ctop.h @@ -46,6 +46,7 @@ #define CTOP_AUX_UDMC (CTOP_AUX_BASE + 0x300) /* EZchip core instructions */ +#define CTOP_INST_HWSCHD_WFT_IE12 0x3E6F7344 #define CTOP_INST_HWSCHD_OFF_R4 0x3C6F00BF #define CTOP_INST_HWSCHD_RESTORE_R4 0x3E6F7103 #define CTOP_INST_SCHD_RW 0x3E6F7004 |