Read/write VFAT support from Rockbox-3.3 FAT stack

Add read/write VFAT support from Rockbox-3.3 FAT stack.
It should be also applicable to the unmodified 2009.11 U-Boot release.

Note that is was taken as is from Rockbox and from a older U-Boot
Rockbox patch. "checkpatch" shows very many coding style errors and
warnings, but it is tedious work to clean this up.

To make this patch work an additional mmc_block_write() board support
routine and the errno variable are needed.
Furthermore following defines in the board config header file:
	#define CONFIG_ROCKBOX_FAT	1
	#define CONFIG_U_BOOT		1
	#define CONFIG_SUPPORT_VFAT	1
	#define CONFIG_CMD_TREE_FAT
This will be added in a follow-up patch.

This patch is based on the patch from Etienne Carriere
<etienne.carriere@stericsson.com> for the U671x U-Boot:

This commit adds FAT write support to u-boot native read-only FAT code.
Commit initially applied on u-boot-v2009.01
(SHA1: 72d15e705bc3983884105cb7755c7ba80e74a0a5)

Based on FAT stack dumped from Rockbox package v3.1 (www.rockbox.org).
Based on initial Rockbox FAT stack integration in u-boot by Keith Outwater
(outwater@comcast.net).
Current porting is aligned with Rockbox v3.3 FAT stack.

Enable upon config switches:
CONFIG_CMD_FAT
CONFIG_ROCKBOX_FAT
CONFIG_CMD_TREE_FAT   (recommended)
CONFIG_SUPPORT_VFAT   (recommended)

C code APIs (from U-boot native FAT support):
int  fat_register_device(block_dev_desc_t *dev_desc, int part_no);
long file_fat_read(const char *path, void *buf, unsigned long maxsize);
int file_fat_ls(const char *dirname);
int file_fat_detectfs(void);

C code APIs (added by Rockbox FAT support):
long file_fat_write(const char *path, void *buf, unsigned long maxsize);
int file_fat_rm(const char *path);
int file_fat_rmdir(const char *path);
int file_fat_mkdir(const char *path);
int file_fat_cd(const char *path);
int file_fat_pwd(void);
int file_fat_mv(const char *oldpath, const char *newpath);
unsigned int rockbox_fat_free(unsigned long size_kbyte);
unsigned int rockbox_fat_size(void);

Use "help fat" from u-boot console to see available commands.

ST-Ericsson ID: WP264488

Change-Id: I9afc29ecb80f9152bd8534bbf11e47e54cfad796
Signed-off-by: Michael Brandt <michael.brandt@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/3009

1 files changed, 47 insertions, 0 deletions

diff --git a/include/rockbox_mv.h b/include/rockbox_mv.h
new file mode 100644
index 000000000..98bd15a98
--- /dev/null
+++ b/include/rockbox_mv.h
@@ -0,0 +1,47 @@
+/***************************************************************************
+ * Copyright (C) 2008 by Frank Gevaerts
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************
+ * Source file dumped from rockbox-3.1 distribution.
+ * Copyright (C) 2008 by Frank Gevaerts
+ ****************************************************************************
+ * See file CREDITS for list of people who contributed to the U-boot 
+ * project.
+ *
+ * 01-jan-2008 etienne.carriere@stnwireless.com - Port to U-boot from rockbox-3.1
+ ***************************************************************************
+ */
+#ifndef __MV_H__
+#define __MV_H__
+
+/* FixMe: These macros are a bit nasty and perhaps misplaced here.
+ *  We'll get rid of them once decided on how to proceed with multivolume. 
+ * U-boot port: well do not support HAVE_MULTIVOLUME !!! 
+ * that not U-boot config switch syntax: keep it like that to easy next upgrade...
+ */
+#ifdef HAVE_MULTIVOLUME
+#define IF_MV(x) x /* optional volume/drive parameter */
+#define IF_MV2(x,y) x,y /* same, for a list of arguments */
+#define IF_MV_NONVOID(x) x /* for prototype with sole volume parameter */
+#define NUM_VOLUMES 2
+#else /* empty definitions if no multi-volume */
+#define IF_MV(x)
+#define IF_MV2(x,y)
+#define IF_MV_NONVOID(x) void
+#define NUM_VOLUMES 1
+#endif
+
+#endif