FatFs library moved to own directory for easy maintenance and code

separation

Author: maccasoft

kernel/Makefile

@@ -9,7 +9,8 @@ OBJS = \
 	console.o \
 	emmc.o \
 	fb.o \
-	ff.o \
+	fatfs/diskio.o \
+	fatfs/ff.o \
 	platform.o \
 	syscalls.o \
 	usb.o \

kernel/fatfs/00readme.txt

@@ -0,0 +1,163 @@
+FatFs Module Source Files R0.10c                      (C)ChaN, 2014
+
+
+FILES
+
+  ffconf.h   Configuration file for FatFs module.
+  ff.h       Common include file for FatFs and application module.
+  ff.c       FatFs module.
+  diskio.h   Common include file for FatFs and disk I/O module.
+  diskio.c   An example of glue function to attach existing disk I/O module to FatFs.
+  integer.h  Integer type definitions for FatFs.
+  option     Optional external functions.
+
+  Low level disk I/O module is not included in this archive because the FatFs
+  module is only a generic file system layer and not depend on any specific
+  storage device. You have to provide a low level disk I/O module that written
+  to control your storage device.
+
+
+
+AGREEMENTS
+
+ FatFs module is an open source software to implement FAT file system to
+ small embedded systems. This is a free software and is opened for education,
+ research and commercial developments under license policy of following trems.
+
+  Copyright (C) 2014, ChaN, all right reserved.
+
+ * The FatFs module is a free software and there is NO WARRANTY.
+ * No restriction on use. You can use, modify and redistribute it for
+   personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
+ * Redistributions of source code must retain the above copyright notice.
+
+
+
+REVISION HISTORY
+
+  Feb 26, 2006  R0.00  Prototype
+
+  Apr 29, 2006  R0.01  First release.
+
+  Jun 01, 2006  R0.02  Added FAT12.
+                       Removed unbuffered mode.
+                       Fixed a problem on small (<32M) patition.
+
+  Jun 10, 2006  R0.02a Added a configuration option _FS_MINIMUM.
+
+  Sep 22, 2006  R0.03  Added f_rename.
+                       Changed option _FS_MINIMUM to _FS_MINIMIZE.
+
+  Dec 11, 2006  R0.03a Improved cluster scan algolithm to write files fast.
+                       Fixed f_mkdir creates incorrect directory on FAT32.
+
+  Feb 04, 2007  R0.04  Supported multiple drive system. (FatFs)
+                       Changed some APIs for multiple drive system.
+                       Added f_mkfs. (FatFs)
+                       Added _USE_FAT32 option. (Tiny-FatFs)
+
+  Apr 01, 2007  R0.04a Supported multiple partitions on a plysical drive. (FatFs)
+                       Fixed an endian sensitive code in f_mkfs. (FatFs)
+                       Added a capability of extending the file size to f_lseek.
+                       Added minimization level 3.
+                       Fixed a problem that can collapse a sector when recreate an
+                       existing file in any sub-directory at non FAT32 cfg. (Tiny-FatFs)
+
+  May 05, 2007  R0.04b Added _USE_NTFLAG option.
+                       Added FSInfo support.
+                       Fixed some problems corresponds to FAT32. (Tiny-FatFs)
+                       Fixed DBCS name can result FR_INVALID_NAME.
+                       Fixed short seek (0 < ofs <= csize) collapses the file object.
+
+  Aug 25, 2007  R0.05  Changed arguments of f_read, f_write.
+                       Changed arguments of f_mkfs. (FatFs)
+                       Fixed f_mkfs on FAT32 creates incorrect FSInfo. (FatFs)
+                       Fixed f_mkdir on FAT32 creates incorrect directory. (FatFs)
+
+  Feb 03, 2008  R0.05a Added f_truncate().
+                       Added f_utime().
+                       Fixed off by one error at FAT sub-type determination.
+                       Fixed btr in f_read() can be mistruncated.
+                       Fixed cached sector is not flushed when create and close without write.
+
+  Apr 01, 2008  R0.06  Added f_forward(). (Tiny-FatFs)
+                       Added string functions: fputc(), fputs(), fprintf() and fgets().
+                       Improved performance of f_lseek() on move to the same or following cluster.
+
+  Apr 01, 2009, R0.07  Merged Tiny-FatFs as a buffer configuration option.
+                       Added long file name support.
+                       Added multiple code page support.
+                       Added re-entrancy for multitask operation.
+                       Added auto cluster size selection to f_mkfs().
+                       Added rewind option to f_readdir().
+                       Changed result code of critical errors.
+                       Renamed string functions to avoid name collision.
+
+  Apr 14, 2009, R0.07a Separated out OS dependent code on reentrant cfg.
+                       Added multiple sector size support.
+
+  Jun 21, 2009, R0.07c Fixed f_unlink() may return FR_OK on error.
+                       Fixed wrong cache control in f_lseek().
+                       Added relative path feature.
+                       Added f_chdir().
+                       Added f_chdrive().
+                       Added proper case conversion for extended characters.
+
+  Nov 03, 2009 R0.07e  Separated out configuration options from ff.h to ffconf.h.
+                       Added a configuration option, _LFN_UNICODE.
+                       Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
+                       Fixed name matching error on the 13 char boundary.
+                       Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
+
+  May 15, 2010, R0.08  Added a memory configuration option. (_USE_LFN)
+                       Added file lock feature. (_FS_SHARE)
+                       Added fast seek feature. (_USE_FASTSEEK)
+                       Changed some types on the API, XCHAR->TCHAR.
+                       Changed fname member in the FILINFO structure on Unicode cfg.
+                       String functions support UTF-8 encoding files on Unicode cfg.
+
+  Aug 16,'10 R0.08a    Added f_getcwd(). (_FS_RPATH = 2)
+                       Added sector erase feature. (_USE_ERASE)
+                       Moved file lock semaphore table from fs object to the bss.
+                       Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
+                       Fixed f_mkfs() creates wrong FAT32 volume.
+
+  Jan 15,'11 R0.08b    Fast seek feature is also applied to f_read() and f_write().
+                       f_lseek() reports required table size on creating CLMP.
+                       Extended format syntax of f_printf function.
+                       Ignores duplicated directory separators in given path names.
+
+  Sep 06,'11 R0.09     f_mkfs() supports multiple partition to finish the multiple partition feature.
+                       Added f_fdisk(). (_MULTI_PARTITION = 2)
+
+  Aug 27,'12 R0.09a    Fixed assertion failure due to OS/2 EA on FAT12/16.
+                       Changed f_open() and f_opendir() reject null object pointer to avoid crash.
+                       Changed option name _FS_SHARE to _FS_LOCK.
+
+  Jan 23,'13 R0.09b    Added f_getlabel() and f_setlabel(). (_USE_LABEL)
+
+  Oct 02,'13 R0.10     Added selection of character encoding on the file. (_STRF_ENCODE)
+                       Added f_closedir().
+                       Added forced full FAT scan for f_getfree(). (_FS_NOFSINFO)
+                       Added forced mount feature with changes of f_mount().
+                       Improved behavior of volume auto detection.
+                       Improved write throughput of f_puts() and f_printf().
+                       Changed argument of f_chdrive(), f_mkfs(), disk_read() and disk_write().
+                       Fixed f_write() can be truncated when the file size is close to 4GB.
+                       Fixed f_open(), f_mkdir() and f_setlabel() can return incorrect error code.
+
+  Jan 15,'14 R0.10a    Added arbitrary strings as drive number in the path name. (_STR_VOLUME_ID)
+                       Added a configuration option of minimum sector size. (_MIN_SS)
+                       2nd argument of f_rename() can have a drive number and it will be ignored.
+                       Fixed f_mount() with forced mount fails when drive number is >= 1.
+                       Fixed f_close() invalidates the file object without volume lock.
+                       Fixed f_closedir() returns but the volume lock is left acquired.
+                       Fixed creation of an entry with LFN fails on too many SFN collisions.
+
+  Mar 19,'14 R0.10b    Fixed a hard error in the disk I/O layer can collapse the directory entry.
+                       Fixed LFN entry is not deleted on delete/rename an object with lossy converted SFN.
+
+  Nov 09,'14 R0.10c    Added a configuration option for the platforms without RTC. (_FS_NORTC)
+                       Fixed volume label created by Mac OS X cannot be retrieved with f_getlabel().
+                       Fixed a potential problem of FAT access that can appear on disk error.
+                       Fixed null pointer dereference on attempting to delete the root direcotry.