Transition to hekate bdk layout

bdk/storage/ramdisk.c

@@ -0,0 +1,67 @@
+/*
+ * Ramdisk driver for Tegra X1
+ *
+ * Copyright (c) 2019 CTCaer
+ *
+ * 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/>.
+ */
+
+#include <string.h>
+
+#include "ramdisk.h"
+#include <mem/heap.h>
+#include <utils/types.h>
+
+#include <memory_map.h>
+
+int ram_disk_init(FATFS *ram_fs)
+{
+	int res;
+	u8 *buf = malloc(0x400000);
+
+	f_mount(NULL, "ram:", 1); // Unmount ramdisk.
+
+	res = f_mkfs("ram:", FM_EXFAT, RAMDISK_CLUSTER_SZ, buf, 0x400000); // Format as exFAT w/ 32KB cluster.
+	if (!res)
+		res = f_mount(ram_fs, "ram:", 1); // Mount ramdisk.
+
+	free(buf);
+
+	return res;
+}
+
+int ram_disk_read(u32 sector, u32 sector_count, void *buf)
+{
+	u32 sector_off = RAM_DISK_ADDR + (sector << 9);
+	u32 bytes_count = sector_count << 9;
+
+	if ((sector_off - RAM_DISK_ADDR) > RAM_DISK_SZ)
+		return 1;
+
+	memcpy(buf, (void *)sector_off, bytes_count);
+
+	return 0;
+}
+
+int ram_disk_write(u32 sector, u32 sector_count, const void *buf)
+{
+	u32 sector_off = RAM_DISK_ADDR + (sector << 9);
+	u32 bytes_count = sector_count << 9;
+
+	if ((sector_off - RAM_DISK_ADDR) > RAM_DISK_SZ)
+		return 1;
+
+	memcpy((void *)sector_off, buf, bytes_count);
+
+	return 0;
+}