Init Commit

2026-05-27 09:56:09 +00:00
commit ee3ede1152
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+/******************************************************************************
+* Copyright (c) 2012 - 2020 Xilinx, Inc.  All rights reserved.
+* SPDX-License-Identifier: MIT
+******************************************************************************/
+
+/*****************************************************************************/
+/**
+*
+* @file sd.c
+*
+* Contains code for the SD card FLASH functionality.
+*
+* <pre>
+* MODIFICATION HISTORY:
+*
+* Ver	Who	Date		Changes
+* ----- ---- -------- -------------------------------------------------------
+* 1.00a jz	04/28/11 Initial release
+* 7.00a kc  10/18/13 Integrated SD/MMC driver
+* 12.00a ssc 12/11/14 Fix for CR# 839182
+*
+* </pre>
+*
+* @note
+*
+******************************************************************************/
+
+/***************************** Include Files *********************************/
+#include "xparameters.h"
+#include "fsbl.h"
+
+#if defined(XPAR_PS7_SD_0_S_AXI_BASEADDR) || defined(XPAR_XSDPS_0_BASEADDR)
+
+#ifndef XPAR_PS7_SD_0_S_AXI_BASEADDR
+#define XPAR_PS7_SD_0_S_AXI_BASEADDR XPAR_XSDPS_0_BASEADDR
+#endif
+
+#include "xstatus.h"
+
+#include "ff.h"
+#include "sd.h"
+
+/************************** Constant Definitions *****************************/
+
+/**************************** Type Definitions *******************************/
+
+/***************** Macros (Inline Functions) Definitions *********************/
+
+/************************** Function Prototypes ******************************/
+
+/************************** Variable Definitions *****************************/
+
+extern u32 FlashReadBaseAddress;
+
+
+static FIL fil;		/* File object */
+static FATFS fatfs;
+static char buffer[32];
+static char *boot_file = buffer;
+
+/******************************************************************************/
+/******************************************************************************/
+/**
+*
+* This function initializes the controller for the SD FLASH interface.
+*
+* @param	filename of the file that is to be used
+*
+* @return
+*		- XST_SUCCESS if the controller initializes correctly
+*		- XST_FAILURE if the controller fails to initializes correctly
+*
+* @note		None.
+*
+****************************************************************************/
+u32 InitSD(const char *filename)
+{
+
+	FRESULT rc;
+	TCHAR *path = "0:/"; /* Logical drive number is 0 */
+
+	/* Register volume work area, initialize device */
+	rc = f_mount(&fatfs, path, 0);
+	fsbl_printf(DEBUG_INFO,"SD: rc= %.8x\n\r", rc);
+
+	if (rc != FR_OK) {
+		return XST_FAILURE;
+	}
+
+	strcpy_rom(buffer, filename);
+	boot_file = (char *)buffer;
+	FlashReadBaseAddress = XPAR_PS7_SD_0_S_AXI_BASEADDR;
+
+	rc = f_open(&fil, boot_file, FA_READ);
+	if (rc) {
+		fsbl_printf(DEBUG_GENERAL,"SD: Unable to open file %s: %d\n", boot_file, rc);
+		return XST_FAILURE;
+	}
+
+	return XST_SUCCESS;
+
+}
+
+/******************************************************************************/
+/**
+*
+* This function provides the SD FLASH interface for the Simplified header
+* functionality.
+*
+* @param	SourceAddress is address in FLASH data space
+* @param	DestinationAddress is address in OCM data space
+* @param	LengthBytes is the number of bytes to move
+*
+* @return
+*		- XST_SUCCESS if the write completes correctly
+*		- XST_FAILURE if the write fails to completes correctly
+*
+* @note		None.
+*
+****************************************************************************/
+u32 SDAccess( u32 SourceAddress, u32 DestinationAddress, u32 LengthBytes)
+{
+
+	FRESULT rc;	 /* Result code */
+	UINT br;
+
+	rc = f_lseek(&fil, SourceAddress);
+	if (rc) {
+		fsbl_printf(DEBUG_INFO,"SD: Unable to seek to %lx\n", SourceAddress);
+		return XST_FAILURE;
+	}
+
+	rc = f_read(&fil, (void*)DestinationAddress, LengthBytes, &br);
+
+	if (rc) {
+		fsbl_printf(DEBUG_GENERAL,"*** ERROR: f_read returned %d\r\n", rc);
+	}
+
+	return XST_SUCCESS;
+
+} /* End of SDAccess */
+
+
+/******************************************************************************/
+/**
+*
+* This function closes the file object
+*
+* @param	None
+*
+* @return	None.
+*
+* @note		None.
+*
+****************************************************************************/
+void ReleaseSD(void) {
+
+	f_close(&fil);
+	return;
+
+
+}
+#endif
+
+