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31 ******************************************************************************/
32 /*****************************************************************************/
37 * Contains the reset and post boot rom state initialization.
38 * Function prototypes in xspips_hw.h
41 * MODIFICATION HISTORY:
43 * Ver Who Date Changes
44 * ----- ------ -------- -----------------------------------------------
45 * 1.06a hk 08/22/13 First release.
46 * 3.00 kvn 02/13/15 Modified code for MISRA-C:2012 compliance.
50 ******************************************************************************/
52 /***************************** Include Files *********************************/
54 #include "xspips_hw.h"
56 /************************** Constant Definitions *****************************/
59 /**************************** Type Definitions *******************************/
62 /***************** Macros (Inline Functions) Definitions *********************/
65 /************************** Variable Definitions *****************************/
68 /*****************************************************************************/
71 * Resets the spi module
73 * @param BaseAddress is the base address of the device.
79 ******************************************************************************/
80 void XSpiPs_ResetHw(u32 BaseAddress)
86 XSpiPs_WriteReg(BaseAddress, XSPIPS_IDR_OFFSET,
87 XSPIPS_IXR_DISABLE_ALL_MASK);
92 XSpiPs_WriteReg(BaseAddress, XSPIPS_ER_OFFSET,
95 * Write default value to RX and TX threshold registers
96 * RX threshold should be set to 1 here as the corresponding
97 * status bit is used to clear the FIFO next
99 XSpiPs_WriteReg(BaseAddress, XSPIPS_TXWR_OFFSET,
100 (XSPIPS_TXWR_RESET_VALUE & XSPIPS_TXWR_MASK));
101 XSpiPs_WriteReg(BaseAddress, XSPIPS_RXWR_OFFSET,
102 (XSPIPS_RXWR_RESET_VALUE & XSPIPS_RXWR_MASK));
107 Check = (XSpiPs_ReadReg(BaseAddress,XSPIPS_SR_OFFSET) &
108 XSPIPS_IXR_RXNEMPTY_MASK);
109 while (Check != 0U) {
110 (void)XSpiPs_ReadReg(BaseAddress, XSPIPS_RXD_OFFSET);
111 Check = (XSpiPs_ReadReg(BaseAddress,XSPIPS_SR_OFFSET) &
112 XSPIPS_IXR_RXNEMPTY_MASK);
116 * Clear status register by writing 1 to the write to clear bits
118 XSpiPs_WriteReg(BaseAddress, XSPIPS_SR_OFFSET,
119 XSPIPS_IXR_WR_TO_CLR_MASK);
122 * Write default value to configuration register
123 * De-select all slaves
125 XSpiPs_WriteReg(BaseAddress, XSPIPS_CR_OFFSET,
126 XSPIPS_CR_RESET_STATE |
127 XSPIPS_CR_SSCTRL_MASK);