/*
* (C) Copyright 2011 - 2012 Samsung Electronics
* EXT4 filesystem implementation in Uboot by
* Uma Shankar <uma.shankar@samsung.com>
* Manjunatha C Achar <a.manjunatha@samsung.com>
*
* Ext4fs support
* made from existing cmd_ext2.c file of Uboot
*
* (C) Copyright 2004
* esd gmbh <www.esd-electronics.com>
* Reinhard Arlt <reinhard.arlt@esd-electronics.com>
*
* made from cmd_reiserfs by
*
* (C) Copyright 2003 - 2004
* Sysgo Real-Time Solutions, AG <www.elinos.com>
* Pavel Bartusek <pba@sysgo.com>
*
* 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
*
*/
/*
* Changelog:
* 0.1 - Newly created file for ext4fs support. Taken from cmd_ext2.c
* file in uboot. Added ext4fs ls load and write support.
*/
#include <common.h>
#include <part.h>
#include <config.h>
#include <command.h>
#include <image.h>
#include <linux/ctype.h>
#include <asm/byteorder.h>
#include <ext_common.h>
#include <ext4fs.h>
#include <linux/stat.h>
#include <malloc.h>
#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
#include <usb.h>
#endif
#if !defined(CONFIG_DOS_PARTITION) && !defined(CONFIG_EFI_PARTITION)
#error DOS or EFI partition support must be selected
#endif
uint64_t total_sector;
uint64_t part_offset;
#if defined(CONFIG_CMD_EXT4_WRITE)
static uint64_t part_size;
static uint16_t cur_part = 1;
#endif
#define DOS_PART_MAGIC_OFFSET 0x1fe
#define DOS_FS_TYPE_OFFSET 0x36
#define DOS_FS32_TYPE_OFFSET 0x52
int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
if (do_ext_load(cmdtp, flag, argc, argv))
return -1;
return 0;
}
int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
if (do_ext_ls(cmdtp, flag, argc, argv))
return -1;
return 0;
}
#if defined(CONFIG_CMD_EXT4_WRITE)
static int ext4_register_device(block_dev_desc_t *dev_desc, int part_no)
{
unsigned char buffer[SECTOR_SIZE];
disk_partition_t info;
if (!dev_desc->block_read)
return -1;
/* check if we have a MBR (on floppies we have only a PBR) */
if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) {
printf("** Can't read from device %d **\n", dev_desc->dev);
return -1;
}
if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
/* no signature found */
return -1;
}
/* First we assume there is a MBR */
if (!get_partition_info(dev_desc, part_no, &info)) {
part_offset = info.start;
cur_part = part_no;
part_size = info.size;
} else if ((strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET],
"FAT", 3) == 0) || (strncmp((char *)&buffer
[DOS_FS32_TYPE_OFFSET],
"FAT32", 5) == 0)) {
/* ok, we assume we are on a PBR only */
cur_part = 1;
part_offset = 0;
} else {
printf("** Partition %d not valid on device %d **\n",
part_no, dev_desc->dev);
return -1;
}
return 0;
}
int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
const char *filename = "/";
int part_length;
unsigned long part = 1;
int dev;
char *ep;
unsigned long ram_address;
unsigned long file_size;
disk_partition_t info;
struct ext_filesystem *fs;
if (argc < 6)
return cmd_usage(cmdtp);
dev = (int)simple_strtoul(argv[2], &ep, 16);
ext4_dev_desc = get_dev(argv[1], dev);
if (ext4_dev_desc == NULL) {
printf("Block device %s %d not supported\n", argv[1], dev);
return 1;
}
if (init_fs(ext4_dev_desc))
return 1;
fs = get_fs();
if (*ep) {
if (*ep != ':') {
puts("Invalid boot device, use `dev[:part]'\n");
goto fail;
}
part = simple_strtoul(++ep, NULL, 16);
}
/* get the filename */
filename = argv[3];
/* get the address in hexadecimal format (string to int) */
ram_address = simple_strtoul(argv[4], NULL, 16);
/* get the filesize in base 10 format */
file_size = simple_strtoul(argv[5], NULL, 10);
/* set the device as block device */
part_length = ext4fs_set_blk_dev(fs->dev_desc, part);
if (part_length == 0) {
printf("Bad partition - %s %d:%lu\n", argv[1], dev, part);
goto fail;
}
/* register the device and partition */
if (ext4_register_device(fs->dev_desc, part) != 0) {
printf("Unable to use %s %d:%lu for fattable\n",
argv[1], dev, part);
goto fail;
}
/* get the partition information */
if (!get_partition_info(fs->dev_desc, part, &info)) {
total_sector = (info.size * info.blksz) / SECTOR_SIZE;
fs->total_sect = total_sector;
} else {
printf("error : get partition info\n");
goto fail;
}
/* mount the filesystem */
if (!ext4fs_mount(part_length)) {
printf("Bad ext4 partition %s %d:%lu\n", argv[1], dev, part);
goto fail;
}
/* start write */
if (ext4fs_write(filename, (unsigned char *)ram_address, file_size)) {
printf("** Error ext4fs_write() **\n");
goto fail;
}
ext4fs_close();
deinit_fs(fs->dev_desc);
return 0;
fail:
ext4fs_close();
deinit_fs(fs->dev_desc);
return 1;
}
U_BOOT_CMD(ext4write, 6, 1, do_ext4_write,
"create a file in the root directory",
"<interface> <dev[:part]> [Absolute filename path] [Address] [sizebytes]\n"
" - create a file in / directory");
#endif
U_BOOT_CMD(ext4ls, 4, 1, do_ext4_ls,
"list files in a directory (default /)",
"<interface> <dev[:part]> [directory]\n"
" - list files from 'dev' on 'interface' in a 'directory'");
U_BOOT_CMD(ext4load, 6, 0, do_ext4_load,
"load binary file from a Ext4 filesystem",
"<interface> <dev[:part]> [addr] [filename] [bytes]\n"
" - load binary file 'filename' from 'dev' on 'interface'\n"
" to address 'addr' from ext4 filesystem");