2c8f92039d
Added initial support Xilinx Embedded Software. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
150 lines
5 KiB
C
Executable file
150 lines
5 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2005 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/*****************************************************************************/
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/**
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*
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* @file xspi_sinit.c
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*
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* The implementation of the XSpi component's static initialization
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* functionality.
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- ---- -------- -----------------------------------------------
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* 1.01a jvb 10/13/05 First release
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* 1.11a wgr 03/22/07 Converted to new coding style.
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*
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* </pre>
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*
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******************************************************************************/
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/***************************** Include Files *********************************/
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#include "xparameters.h"
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#include "xspi.h"
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/************************** Constant Definitions *****************************/
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/**************************** Type Definitions *******************************/
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/***************** Macros (Inline Functions) Definitions *********************/
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/************************** Function Prototypes ******************************/
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/************************** Variable Definitions *****************************/
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extern XSpi_Config XSpi_ConfigTable[];
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/*****************************************************************************/
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/**
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*
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* Looks up the device configuration based on the unique device ID. A table
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* contains the configuration info for each device in the system.
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*
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* @param DeviceId contains the ID of the device to look up the
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* configuration for.
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*
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* @return
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*
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* A pointer to the configuration found or NULL if the specified device ID was
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* not found. See xspi.h for the definition of XSpi_Config.
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*
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* @note None.
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*
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******************************************************************************/
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XSpi_Config *XSpi_LookupConfig(u16 DeviceId)
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{
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XSpi_Config *CfgPtr = NULL;
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u32 Index;
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for (Index = 0; Index < XPAR_XSPI_NUM_INSTANCES; Index++) {
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if (XSpi_ConfigTable[Index].DeviceId == DeviceId) {
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CfgPtr = &XSpi_ConfigTable[Index];
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break;
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}
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}
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return CfgPtr;
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}
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/*****************************************************************************/
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/**
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*
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* Initializes a specific XSpi instance such that the driver is ready to use.
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*
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* The state of the device after initialization is:
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* - Device is disabled
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* - Slave mode
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* - Active high clock polarity
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* - Clock phase 0
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*
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* @param InstancePtr is a pointer to the XSpi instance to be worked on.
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* @param DeviceId is the unique id of the device controlled by this XSpi
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* instance. Passing in a device id associates the generic XSpi
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* instance to a specific device, as chosen by the caller or
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* application developer.
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*
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* @return
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*
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* - XST_SUCCESS if successful.
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* - XST_DEVICE_IS_STARTED if the device is started. It must be
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* stopped to re-initialize.
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* - XST_DEVICE_NOT_FOUND if the device was not found in the
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* configuration such that initialization could not be
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* accomplished.
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*
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* @note None.
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*
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******************************************************************************/
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int XSpi_Initialize(XSpi *InstancePtr, u16 DeviceId)
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{
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XSpi_Config *ConfigPtr; /* Pointer to Configuration ROM data */
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Xil_AssertNonvoid(InstancePtr != NULL);
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/*
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* Lookup the device configuration in the temporary CROM table. Use this
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* configuration info down below when initializing this component.
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*/
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ConfigPtr = XSpi_LookupConfig(DeviceId);
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if (ConfigPtr == NULL) {
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return XST_DEVICE_NOT_FOUND;
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}
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return XSpi_CfgInitialize(InstancePtr, ConfigPtr,
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ConfigPtr->BaseAddress);
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}
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