213 lines
6.6 KiB
C
Executable file
213 lines
6.6 KiB
C
Executable file
/******************************************************************************
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*
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* (c) Copyright 2010-2013 Xilinx, Inc. All rights reserved.
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*
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* This file contains confidential and proprietary information of Xilinx, Inc.
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* and is protected under U.S. and international copyright and other
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* intellectual property laws.
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*
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* DISCLAIMER
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* This disclaimer is not a license and does not grant any rights to the
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* materials distributed herewith. Except as otherwise provided in a valid
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* license issued to you by Xilinx, and to the maximum extent permitted by
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* applicable law: (1) THESE MATERIALS ARE MADE AVAILABLE "AS IS" AND WITH ALL
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* FAULTS, AND XILINX HEREBY DISCLAIMS ALL WARRANTIES AND CONDITIONS, EXPRESS,
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* IMPLIED, OR STATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF
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* MERCHANTABILITY, NON-INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE;
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* and (2) Xilinx shall not be liable (whether in contract or tort, including
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* negligence, or under any other theory of liability) for any loss or damage
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* of any kind or nature related to, arising under or in connection with these
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* materials, including for any direct, or any indirect, special, incidental,
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* or consequential loss or damage (including loss of data, profits, goodwill,
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* or any type of loss or damage suffered as a result of any action brought by
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* a third party) even if such damage or loss was reasonably foreseeable or
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* Xilinx had been advised of the possibility of the same.
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*
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* CRITICAL APPLICATIONS
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* Xilinx products are not designed or intended to be fail-safe, or for use in
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* any application requiring fail-safe performance, such as life-support or
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* safety devices or systems, Class III medical devices, nuclear facilities,
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* applications related to the deployment of airbags, or any other applications
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* that could lead to death, personal injury, or severe property or
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* environmental damage (individually and collectively, "Critical
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* Applications"). Customer assumes the sole risk and liability of any use of
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* Xilinx products in Critical Applications, subject only to applicable laws
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* and regulations governing limitations on product liability.
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*
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* THIS COPYRIGHT NOTICE AND DISCLAIMER MUST BE RETAINED AS PART OF THIS FILE
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* AT ALL TIMES.
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*
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******************************************************************************/
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/*****************************************************************************/
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/**
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* @file xbram_example.c
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*
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* This file contains a self test example using the BRAM driver (XBram).
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*
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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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* 1.00a sa 05/11/10 Initial release.
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* 3.01a sa 13/01/12 Changed XBram_SelfTest(InstancePtr) to
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* XBram_SelfTest(InstancePtr,0) as per
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* new API (CR 639274)
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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 "xbram.h"
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#include <stdio.h>
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/************************** Constant Definitions *****************************/
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/*
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* The following constants map to the XPAR parameters created in the
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* xparameters.h file. They are defined here such that a user can easily
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* change all the needed parameters in one place.
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*/
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#define BRAM_DEVICE_ID XPAR_BRAM_0_DEVICE_ID
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/************************** Function Prototypes ******************************/
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int BramExample(u16 DeviceId);
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static void InitializeECC(XBram_Config *ConfigPtr, u32 EffectiveAddr);
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/************************** Variable Definitions *****************************/
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/*
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* The following are declared globally so they are zeroed and so they are
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* easily accessible from a debugger
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*/
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XBram Bram; /* The Instance of the BRAM Driver */
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/****************************************************************************/
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/**
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*
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* This function is the main function of the BRAM example.
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*
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* @param None.
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*
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* @return
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* - XST_SUCCESS to indicate success.
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* - XST_FAILURE to indicate failure.
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*
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* @note None.
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*
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*****************************************************************************/
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#ifndef TESTAPP_GEN
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int main(void)
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{
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int Status;
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Status = BramExample(BRAM_DEVICE_ID);
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if (Status != XST_SUCCESS ) {
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xil_printf("Bram Example Test FAILED.\r\n");
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return XST_FAILURE;
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}
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xil_printf("Bram Example Test PASSED.\r\n");
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return XST_SUCCESS;
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}
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#endif
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/*****************************************************************************/
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/**
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*
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* This is the entry point for the BRAM example.
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*
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* @param DeviceId is the XPAR_<BRAM_instance>_DEVICE_ID value from
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* xparameters.h
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*
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* @return
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* - XST_SUCCESS to indicate success.
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* - XST_FAILURE to indicate failure.
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*
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* @note None.
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*
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******************************************************************************/
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int BramExample(u16 DeviceId)
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{
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int Status;
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XBram_Config *ConfigPtr;
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/*
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* Initialize the BRAM driver. If an error occurs then exit
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*/
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/*
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* Lookup configuration data in the device configuration table.
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* Use this configuration info down below when initializing this
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* driver.
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*/
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ConfigPtr = XBram_LookupConfig(DeviceId);
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if (ConfigPtr == (XBram_Config *) NULL) {
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return XST_FAILURE;
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}
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Status = XBram_CfgInitialize(&Bram, ConfigPtr,
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ConfigPtr->CtrlBaseAddress);
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if (Status != XST_SUCCESS) {
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return XST_FAILURE;
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}
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InitializeECC(ConfigPtr, ConfigPtr->CtrlBaseAddress);
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/*
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* Execute the BRAM driver selftest.
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*/
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Status = XBram_SelfTest(&Bram, 0);
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if (Status != XST_SUCCESS) {
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return XST_FAILURE;
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}
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return XST_SUCCESS;
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}
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/****************************************************************************/
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/**
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*
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* This function ensures that ECC in the BRAM is initialized if no hardware
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* initialization is available. The ECC bits are initialized by reading and
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* writing data in the memory. This code is not optimized to only read data
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* in initialized sections of the BRAM.
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*
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* @param ConfigPtr is a reference to a structure containing information
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* about a specific BRAM device.
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* @param EffectiveAddr is the device base address in the virtual memory
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* address space.
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*
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* @return
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* None
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*
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* @note None.
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*
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*****************************************************************************/
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void InitializeECC(XBram_Config *ConfigPtr, u32 EffectiveAddr)
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{
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u32 Addr;
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volatile u32 Data;
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if (ConfigPtr->EccPresent &&
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ConfigPtr->EccOnOffRegister &&
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ConfigPtr->EccOnOffResetValue == 0 &&
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ConfigPtr->WriteAccess != 0) {
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for (Addr = ConfigPtr->MemBaseAddress;
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Addr < ConfigPtr->MemHighAddress; Addr+=4) {
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Data = XBram_In32(Addr);
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XBram_Out32(Addr, Data);
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}
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XBram_WriteReg(EffectiveAddr, XBRAM_ECC_ON_OFF_OFFSET, 1);
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}
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}
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