/*
 * (C) Copyright 2008
 * Stefan Roese, DENX Software Engineering, sr@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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.
 *
 * This program is distributed in the hope that 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */


/*
 * UBIFS command support
 */

#undef DEBUG

#include <common.h>
#include <config.h>
#include <command.h>

#include "../fs/ubifs/ubifs.h"

static int ubifs_initialized;
static int ubifs_mounted;

extern struct super_block *ubifs_sb;

/* Prototypes */
int ubifs_init(void);
int ubifs_mount(char *vol_name);
void ubifs_umount(struct ubifs_info *c);
int ubifs_ls(char *dir_name);
int ubifs_load(char *filename, u32 addr, u32 size);

int do_ubifs_mount(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	char *vol_name;
	int ret;

	if (argc != 2)
		return cmd_usage(cmdtp);

	vol_name = argv[1];
	debug("Using volume %s\n", vol_name);

	if (ubifs_initialized == 0) {
		ubifs_init();
		ubifs_initialized = 1;
	}

	ret = ubifs_mount(vol_name);
	if (ret)
		return -1;

	ubifs_mounted = 1;

	return 0;
}

int ubifs_is_mounted(void)
{
	return ubifs_mounted;
}

void cmd_ubifs_umount(void)
{

	if (ubifs_sb) {
		printf("Unmounting UBIFS volume %s!\n",
		       ((struct ubifs_info *)(ubifs_sb->s_fs_info))->vi.name);
		ubifs_umount(ubifs_sb->s_fs_info);
	}

	ubifs_sb = NULL;
	ubifs_mounted = 0;
	ubifs_initialized = 0;
}

int do_ubifs_umount(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	if (argc != 1)
		return cmd_usage(cmdtp);

	if (ubifs_initialized == 0) {
		printf("No UBIFS volume mounted!\n");
		return -1;
	}

	cmd_ubifs_umount();

	return 0;
}

int do_ubifs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	char *filename = "/";
	int ret;

	if (!ubifs_mounted) {
		printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
		return -1;
	}

	if (argc == 2)
		filename = argv[1];
	debug("Using filename %s\n", filename);

	ret = ubifs_ls(filename);
	if (ret)
		printf("%s not found!\n", filename);

	return ret;
}

int do_ubifs_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	char *filename;
	char *endp;
	int ret;
	u32 addr;
	u32 size = 0;

	if (!ubifs_mounted) {
		printf("UBIFS not mounted, use ubifs mount to mount volume first!\n");
		return -1;
	}

	if (argc < 3)
		return cmd_usage(cmdtp);

	addr = simple_strtoul(argv[1], &endp, 16);
	if (endp == argv[1])
		return cmd_usage(cmdtp);

	filename = argv[2];

	if (argc == 4) {
		size = simple_strtoul(argv[3], &endp, 16);
		if (endp == argv[3])
			return cmd_usage(cmdtp);
	}
	debug("Loading file '%s' to address 0x%08x (size %d)\n", filename, addr, size);

	ret = ubifs_load(filename, addr, size);
	if (ret)
		printf("%s not found!\n", filename);

	return ret;
}

U_BOOT_CMD(
	ubifsmount, 2, 0, do_ubifs_mount,
	"mount UBIFS volume",
	"<volume-name>\n"
	"    - mount 'volume-name' volume"
);

U_BOOT_CMD(
	ubifsumount, 1, 0, do_ubifs_umount,
	"unmount UBIFS volume",
	"    - unmount current volume"
);

U_BOOT_CMD(
	ubifsls, 2, 0, do_ubifs_ls,
	"list files in a directory",
	"[directory]\n"
	"    - list files in a 'directory' (default '/')"
);

U_BOOT_CMD(
	ubifsload, 4, 0, do_ubifs_load,
	"load file from an UBIFS filesystem",
	"<addr> <filename> [bytes]\n"
	"    - load file 'filename' to address 'addr'"
);