diff options
Diffstat (limited to 'arch/powerpc/kernel/idle_book3e.S')
-rw-r--r-- | arch/powerpc/kernel/idle_book3e.S | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/idle_book3e.S b/arch/powerpc/kernel/idle_book3e.S index 4c7cb400..ee1f024 100644 --- a/arch/powerpc/kernel/idle_book3e.S +++ b/arch/powerpc/kernel/idle_book3e.S @@ -16,17 +16,19 @@ #include <asm/ppc-opcode.h> #include <asm/processor.h> #include <asm/thread_info.h> +#include <asm/epapr_hcalls.h> /* 64-bit version only for now */ #ifdef CONFIG_PPC64 -_GLOBAL(book3e_idle) +.macro BOOK3E_IDLE name loop +_GLOBAL(\name) /* Save LR for later */ mflr r0 std r0,16(r1) /* Hard disable interrupts */ - wrteei 0 + fsl_erratum_a006198_wrteei0 r0 r3 /* Now check if an interrupt came in while we were soft disabled * since we may otherwise lose it (doorbells etc...). @@ -67,7 +69,33 @@ _GLOBAL(book3e_idle) /* We can now re-enable hard interrupts and go to sleep */ wrteei 1 -1: PPC_WAIT(0) + \loop + +.endm + +.macro BOOK3E_IDLE_LOOP +1: + PPC_WAIT(0) b 1b +.endm + +/* epapr_ev_idle_start below is patched with the proper hcall + opcodes during kernel initialization */ +.macro EPAPR_EV_IDLE_LOOP +idle_loop: + LOAD_REG_IMMEDIATE(r11, EV_HCALL_TOKEN(EV_IDLE)) + +.global epapr_ev_idle_start +epapr_ev_idle_start: + li r3, -1 + nop + nop + nop + b idle_loop +.endm + +BOOK3E_IDLE epapr_ev_idle EPAPR_EV_IDLE_LOOP + +BOOK3E_IDLE book3e_idle BOOK3E_IDLE_LOOP #endif /* CONFIG_PPC64 */ |