Initial Commit

2026-03-05 20:18:29 +01:00
commit 5a4d3ee8e0
901 changed files with 296682 additions and 0 deletions
--- a/TegraExplorer/source/libs/fatfs/diskio.c
+++ b/TegraExplorer/source/libs/fatfs/diskio.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2019-2020 shchmue
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*-----------------------------------------------------------------------*/
+/* Low level disk I/O module skeleton for FatFs     (C)ChaN, 2016        */
+/*-----------------------------------------------------------------------*/
+/* If a working storage control module is available, it should be        */
+/* attached to the FatFs via a glue function rather than modifying it.   */
+/* This is an example of glue functions to attach various exsisting      */
+/* storage control modules to the FatFs module with a defined API.       */
+/*-----------------------------------------------------------------------*/
+
+#include <string.h>
+
+#include <libs/fatfs/diskio.h>	/* FatFs lower layer API */
+#include <memory_map.h>
+#include <storage/nx_sd.h>
+#include "../../storage/nx_emmc_bis.h"
+#include <storage/sdmmc.h>
+
+/*-----------------------------------------------------------------------*/
+/* Get Drive Status                                                      */
+/*-----------------------------------------------------------------------*/
+DSTATUS disk_status (
+	BYTE pdrv /* Physical drive number to identify the drive */
+)
+{
+	return 0;
+}
+
+/*-----------------------------------------------------------------------*/
+/* Inidialize a Drive                                                    */
+/*-----------------------------------------------------------------------*/
+DSTATUS disk_initialize (
+	BYTE pdrv /* Physical drive number to identify the drive */
+)
+{
+	return 0;
+}
+
+/*-----------------------------------------------------------------------*/
+/* Read Sector(s)                                                        */
+/*-----------------------------------------------------------------------*/
+DRESULT disk_read (
+	BYTE pdrv,		/* Physical drive number to identify the drive */
+	BYTE *buff,		/* Data buffer to store read data */
+	DWORD sector,	/* Start sector in LBA */
+	UINT count		/* Number of sectors to read */
+)
+{
+	switch (pdrv)
+	{
+	case DRIVE_SD:
+		return sdmmc_storage_read(&sd_storage, sector, count, buff) ? RES_OK : RES_ERROR;
+
+	case DRIVE_BIS:
+		return nx_emmc_bis_read(sector, count, buff);
+	}
+
+	return RES_ERROR;
+}
+
+/*-----------------------------------------------------------------------*/
+/* Write Sector(s)                                                       */
+/*-----------------------------------------------------------------------*/
+DRESULT disk_write (
+	BYTE pdrv,			/* Physical drive number to identify the drive */
+	const BYTE *buff,	/* Data to be written */
+	DWORD sector,		/* Start sector in LBA */
+	UINT count			/* Number of sectors to write */
+)
+{
+	switch (pdrv)
+	{
+	case DRIVE_SD:
+		return sdmmc_storage_write(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
+
+	case DRIVE_BIS:
+		return nx_emmc_bis_write(sector, count, (void *)buff);
+	}
+
+	return RES_ERROR;
+}
+
+/*-----------------------------------------------------------------------*/
+/* Miscellaneous Functions                                               */
+/*-----------------------------------------------------------------------*/
+static u32 part_rsvd_size = 0;
+DRESULT disk_ioctl (
+	BYTE pdrv,		/* Physical drive nmuber (0..) */
+	BYTE cmd,		/* Control code */
+	void *buff		/* Buffer to send/receive control data */
+)
+{
+	DWORD *buf = (DWORD *)buff;
+
+	if (pdrv == DRIVE_SD)
+	{
+		switch (cmd)
+		{
+		case GET_SECTOR_COUNT:
+			*buf = sd_storage.sec_cnt - part_rsvd_size;
+			break;
+		case GET_BLOCK_SIZE:
+			*buf = 32768; // Align to 16MB.
+			break;
+		}
+	}
+	else if (pdrv == DRIVE_RAM)
+	{
+		switch (cmd)
+		{
+		case GET_SECTOR_COUNT:
+			*buf = RAM_DISK_SZ >> 9; // 1GB.
+			break;
+		case GET_BLOCK_SIZE:
+			*buf = 2048; // Align to 1MB.
+			break;
+		}
+	}
+
+	return RES_OK;
+}