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storage: Add Ramdisk driver
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3 changed files with 98 additions and 1 deletions
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@ -32,7 +32,7 @@ OBJS = $(addprefix $(BUILDDIR)/$(TARGET)/, \
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OBJS += $(addprefix $(BUILDDIR)/$(TARGET)/, \
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bpmp.o clock.o cluster.o di.o gpio.o i2c.o irq.o pinmux.o se.o smmu.o tsec.o uart.o \
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fuse.o kfuse.o \
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mc.o sdram.o minerva.o \
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mc.o sdram.o minerva.o ramdisk.o \
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sdmmc.o sdmmc_driver.o nx_emmc.o nx_sd.o \
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bq24193.o max17050.o max7762x.o max77620-rtc.o regulator_5v.o \
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touch.o joycon.o tmp451.o fan.o \
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67
nyx/nyx_gui/storage/ramdisk.c
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67
nyx/nyx_gui/storage/ramdisk.c
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@ -0,0 +1,67 @@
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/*
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* Ramdisk driver for Tegra X1
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*
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* Copyright (c) 2019 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include "ramdisk.h"
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#include "../mem/heap.h"
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#include "../utils/types.h"
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#include "../../../common/memory_map.h"
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int ram_disk_init(FATFS *ram_fs)
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{
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int res;
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u8 *buf = malloc(0x400000);
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f_mount(NULL, "ram:", 1); // Unmount ramdisk.
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res = f_mkfs("ram:", FM_EXFAT, RAMDISK_CLUSTER_SZ, buf, 0x400000); // Format as exFAT w/ 32KB cluster.
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if (!res)
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res = f_mount(ram_fs, "ram:", 1); // Mount ramdisk.
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free(buf);
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return res;
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}
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int ram_disk_read(u32 sector, u32 sector_count, void *buf)
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{
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u32 sector_off = RAM_DISK_ADDR + (sector << 9);
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u32 bytes_count = sector_count << 9;
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if ((sector_off - RAM_DISK_ADDR) > RAM_DISK_SZ)
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return 1;
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memcpy(buf, (void *)sector_off, bytes_count);
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return 0;
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}
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int ram_disk_write(u32 sector, u32 sector_count, const void *buf)
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{
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u32 sector_off = RAM_DISK_ADDR + (sector << 9);
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u32 bytes_count = sector_count << 9;
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if ((sector_off - RAM_DISK_ADDR) > RAM_DISK_SZ)
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return 1;
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memcpy((void *)sector_off, buf, bytes_count);
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return 0;
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}
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30
nyx/nyx_gui/storage/ramdisk.h
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30
nyx/nyx_gui/storage/ramdisk.h
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@ -0,0 +1,30 @@
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/*
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* Ramdisk driver for Tegra X1
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*
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* Copyright (c) 2019 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef RAM_DISK_H
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#define RAM_DISK_H
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#include "../libs/fatfs/ff.h"
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#define RAMDISK_CLUSTER_SZ 32768
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int ram_disk_init(FATFS *ram_fs);
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int ram_disk_read(u32 sector, u32 sector_count, void *buf);
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int ram_disk_write(u32 sector, u32 sector_count, const void *buf);
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#endif
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