zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/boot/common/src/uboot/include/fs.h b/boot/common/src/uboot/include/fs.h
new file mode 100644
index 0000000..2f2aca8
--- /dev/null
+++ b/boot/common/src/uboot/include/fs.h
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+#ifndef _FS_H
+#define _FS_H
+
+#include <common.h>
+
+#define FS_TYPE_ANY 0
+#define FS_TYPE_FAT 1
+#define FS_TYPE_EXT 2
+#define FS_TYPE_SANDBOX 3
+#define FS_TYPE_UBIFS 4
+
+/*
+ * Tell the fs layer which block device an partition to use for future
+ * commands. This also internally identifies the filesystem that is present
+ * within the partition. The identification process may be limited to a
+ * specific filesystem type by passing FS_* in the fstype parameter.
+ *
+ * Returns 0 on success.
+ * Returns non-zero if there is an error accessing the disk or partition, or
+ * no known filesystem type could be recognized on it.
+ */
+int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
+
+/*
+ * Print the list of files on the partition previously set by fs_set_blk_dev(),
+ * in directory "dirname".
+ *
+ * Returns 0 on success. Returns non-zero on error.
+ */
+int fs_ls(const char *dirname);
+
+/*
+ * Determine whether a file exists
+ *
+ * Returns 1 if the file exists, 0 if it doesn't exist.
+ */
+int fs_exists(const char *filename);
+
+/*
+ * fs_size - Determine a file's size
+ *
+ * @filename: Name of the file
+ * @size: Size of file
+ * @return 0 if ok with valid *size, negative on error
+ */
+int fs_size(const char *filename, loff_t *size);
+
+/*
+ * fs_read - Read file from the partition previously set by fs_set_blk_dev()
+ * Note that not all filesystem types support either/both offset!=0 or len!=0.
+ *
+ * @filename: Name of file to read from
+ * @addr: The address to read into
+ * @offset: The offset in file to read from
+ * @len: The number of bytes to read. Maybe 0 to read entire file
+ * @actread: Returns the actual number of bytes read
+ * @return 0 if ok with valid *actread, -1 on error conditions
+ */
+int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
+ loff_t *actread);
+
+/*
+ * fs_write - Write file to the partition previously set by fs_set_blk_dev()
+ * Note that not all filesystem types support offset!=0.
+ *
+ * @filename: Name of file to read from
+ * @addr: The address to read into
+ * @offset: The offset in file to read from. Maybe 0 to write to start of file
+ * @len: The number of bytes to write
+ * @actwrite: Returns the actual number of bytes written
+ * @return 0 if ok with valid *actwrite, -1 on error conditions
+ */
+int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
+ loff_t *actwrite);
+
+/*
+ * Common implementation for various filesystem commands, optionally limited
+ * to a specific filesystem type via the fstype parameter.
+ */
+int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int fstype);
+int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int fstype);
+int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int fstype);
+int file_exists(const char *dev_type, const char *dev_part, const char *file,
+ int fstype);
+int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int fstype);
+
+/*
+ * Determine the UUID of the specified filesystem and print it. Optionally it is
+ * possible to store the UUID directly in env.
+ */
+int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int fstype);
+
+/*
+ * Determine the type of the specified filesystem and print it. Optionally it is
+ * possible to store the type directly in env.
+ */
+int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
+
+#endif /* _FS_H */