1 /******************************************************************************
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31 ******************************************************************************/
32 /*****************************************************************************/
36 * This file contains low level functions to get/set time from the Global Timer
37 * register in the ARM Cortex A53 MP core.
40 * MODIFICATION HISTORY:
42 * Ver Who Date Changes
43 * ----- ------ -------- ---------------------------------------------------
44 * 5.00 pkp 05/29/14 First release
49 ******************************************************************************/
50 /***************************** Include Files *********************************/
53 #include "xpseudo_asm.h"
54 #include "xil_types.h"
55 #include "xil_assert.h"
58 /***************** Macros (Inline Functions) Definitions *********************/
60 /**************************** Type Definitions *******************************/
62 /************************** Constant Definitions *****************************/
64 /************************** Variable Definitions *****************************/
66 /************************** Function Prototypes ******************************/
68 /****************************************************************************
70 * Set the time in the Global Timer Counter Register.
72 * @param Value to be written to the Global Timer Counter Register.
76 * @note In multiprocessor environment reference time will reset/lost for
77 * all processors, when this function called by any one processor.
79 ****************************************************************************/
80 void XTime_SetTime(XTime Xtime_Global)
82 /*As the generic timer of A53 runs constantly time can not be set as desired
83 so the API is left unimplemented*/
86 /****************************************************************************
88 * Get the time from the Global Timer Counter Register.
90 * @param Pointer to the location to be updated with the time.
96 ****************************************************************************/
97 void XTime_GetTime(XTime *Xtime_Global)
99 *Xtime_Global = mfcp(CNTPCT_EL0);