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31 ******************************************************************************/
32 /*****************************************************************************/
37 * MODIFICATION HISTORY:
39 * Ver Who Date Changes
40 * ----- ---- -------- ---------------------------------------------------
41 * 5.00 pkp 02/10/14 First release
42 * 5.04 pkp 12/18/15 Initialized global constructor for C++ applications
43 * 5.04 pkp 02/19/16 Added timer configuration using XTime_StartTimer API when
45 * 6.4 asa 08/16/17 Added call to Xil_InitializeExistingMPURegConfig to
46 * initialize the MPU configuration table with the MPU
47 * configurations already set in Init_Mpu function.
48 * 6.6 srm 10/18/17 Updated the timer configuration with XTime_StartTTCTimer.
49 * Now the timer instance as specified by the user will be
57 ******************************************************************************/
58 #include "xparameters.h"
79 .set RPU_0_PWRCTL, 0xFF9A0108
80 .set RPU_1_PWRCTL, 0xFF9A0208
87 bl __cpu_init /* Initialize the CPU first (BSP provides this) */
88 mrc p15, 0, r0, c0, c0, 5 /* Read MPIDR register */
89 ands r0, r0, #MPIDR_AFF0 /* Get affinity level 0 */
91 ldr r10, =RPU_0_PWRCTL /* Load PWRCTRL address for core 0 */
95 ldr r10, =RPU_1_PWRCTL /* Load PWRCTRL address for core 1 */
98 ldr r11, [r10] /* Read PWRCTRL register */
99 ands r11, r11, #PWRCTL_MASK /* Extract and test core's PWRCTRL */
101 /* if warm reset, skip the clearing of BSS and SBSS */
107 ldr r1,.Lsbss_start /* calculate beginning of the SBSS */
108 ldr r2,.Lsbss_end /* calculate end of the SBSS */
112 bge .Lenclsbss /* If no SBSS, no clearing required */
118 ldr r1,.Lbss_start /* calculate beginning of the BSS */
119 ldr r2,.Lbss_end /* calculate end of the BSS */
123 bge .Lenclbss /* If no BSS, no clearing required */
129 /* set stack pointer */
130 ldr r13,.Lstack /* stack address */
132 /* configure the timer if TTC is present */
133 #ifdef SLEEP_TIMER_BASEADDR
134 bl XTime_StartTTCTimer
136 bl Xil_InitializeExistingMPURegConfig /* Initialize MPU config */
137 /* run global constructors */
140 /* make sure argc and argv are valid */
144 bl main /* Jump to main C code */
146 /* Cleanup global constructors */
151 .Lexit: /* should never get here */
155 .size _startup,.Lstart-_startup