mirror of
https://github.com/CTCaer/hekate
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185526d134
BDK will allow developers to use the full collection of drivers, with limited editing, if any, for making payloads for Nintendo Switch. Using a single source for everything will also help decoupling Switch specific code and easily port it to other Tegra X1/X1+ platforms. And maybe even to lower targets. Everything is now centrilized into bdk folder. Every module or project can utilize it by simply including it. This is just the start and it will continue to improve.
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
/*
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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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