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35 * @file microblaze_sleep.c
37 * Contains implementation of microblaze sleep function.
40 * MODIFICATION HISTORY:
42 * Ver Who Date Changes
43 * ----- ---- -------- -------------------------------------------------------
44 * 4.1 hk 04/18/14 Add sleep function.
50 * This file may contain architecture-dependent code.
52 ******************************************************************************/
54 /***************************** Include Files *********************************/
56 #include "microblaze_sleep.h"
58 /************************** Constant Definitions *****************************/
61 /**************************** Type Definitions *******************************/
64 /***************** Macros (Inline Functions) Definitions *********************/
67 /************************** Function Prototypes ******************************/
71 /*****************************************************************************/
74 * Provides delay for requested duration.
76 * @param Delay time in milliseconds.
80 * @note Instruction cache should be enabled for this to work.
82 ******************************************************************************/
83 void MB_Sleep(unsigned int MilliSeconds)
85 if (((mfmsr() & 0x20) == 0)) {
87 * Instruction cache not enabled.
88 * Delay will be much higher than expected.
94 "addik r7, r0, %0 \n\t"
96 "addik r7, r7, -1 \n\t"
100 "addik %1, %1, -1 \n\t"
101 :: "i"(ITERS_PER_MSEC), "d" (MilliSeconds));