common/cmd_ext4.c

   1 /*
   2  * (C) Copyright 2011 - 2012 Samsung Electronics
   3  * EXT4 filesystem implementation in Uboot by
   4  * Uma Shankar <uma.shankar@samsung.com>
   5  * Manjunatha C Achar <a.manjunatha@samsung.com>
   6  *
   7  * Ext4fs support
   8  * made from existing cmd_ext2.c file of Uboot
   9  *
  10  * (C) Copyright 2004
  11  * esd gmbh <www.esd-electronics.com>
  12  * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
  13  *
  14  * made from cmd_reiserfs by
  15  *
  16  * (C) Copyright 2003 - 2004
  17  * Sysgo Real-Time Solutions, AG <www.elinos.com>
  18  * Pavel Bartusek <pba@sysgo.com>
  19  *
  20  * This program is free software; you can redistribute it and/or
  21  * modify it under the terms of the GNU General Public License as
  22  * published by the Free Software Foundation; either version 2 of
  23  * the License, or (at your option) any later version.
  24  *
  25  * This program is distributed in the hope that it will be useful,
  26  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  27  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28  * GNU General Public License for more details.
  29  *
  30  * You should have received a copy of the GNU General Public License
  31  * along with this program; if not, write to the Free Software
  32  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  33  * MA 02111-1307 USA
  34  *
  35  */
  36
  37 /*
  38  * Changelog:
  39  *      0.1 - Newly created file for ext4fs support. Taken from cmd_ext2.c
  40  *              file in uboot. Added ext4fs ls load and write support.
  41  */
  42
  43 #include <common.h>
  44 #include <part.h>
  45 #include <config.h>
  46 #include <command.h>
  47 #include <image.h>
  48 #include <linux/ctype.h>
  49 #include <asm/byteorder.h>
  50 #include <ext4fs.h>
  51 #include <linux/stat.h>
  52 #include <malloc.h>
  53 #include <fs.h>
  54
  55 #if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
  56 #include <usb.h>
  57 #endif
  58
  59 int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
  60                                                 char *const argv[])
  61 {
  62         return do_load(cmdtp, flag, argc, argv, FS_TYPE_EXT, 16);
  63 }
  64
  65 int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  66 {
  67         return do_ls(cmdtp, flag, argc, argv, FS_TYPE_EXT);
  68 }
  69
  70 #if defined(CONFIG_CMD_EXT4_WRITE)
  71 int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc,
  72                                 char *const argv[])
  73 {
  74         const char *filename = "/";
  75         int dev, part;
  76         unsigned long ram_address;
  77         unsigned long file_size;
  78         disk_partition_t info;
  79         block_dev_desc_t *dev_desc;
  80
  81         if (argc < 6)
  82                 return cmd_usage(cmdtp);
  83
  84         part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1);
  85         if (part < 0)
  86                 return 1;
  87
  88         dev = dev_desc->dev;
  89
  90         /* get the filename */
  91         filename = argv[4];
  92
  93         /* get the address in hexadecimal format (string to int) */
  94         ram_address = simple_strtoul(argv[3], NULL, 16);
  95
  96         /* get the filesize in base 10 format */
  97         file_size = simple_strtoul(argv[5], NULL, 10);
  98
  99         /* set the device as block device */
 100         ext4fs_set_blk_dev(dev_desc, &info);
 101
 102         /* mount the filesystem */
 103         if (!ext4fs_mount(info.size)) {
 104                 printf("Bad ext4 partition %s %d:%d\n", argv[1], dev, part);
 105                 goto fail;
 106         }
 107
 108         /* start write */
 109         if (ext4fs_write(filename, (unsigned char *)ram_address, file_size)) {
 110                 printf("** Error ext4fs_write() **\n");
 111                 goto fail;
 112         }
 113         ext4fs_close();
 114
 115         return 0;
 116
 117 fail:
 118         ext4fs_close();
 119
 120         return 1;
 121 }
 122
 123 U_BOOT_CMD(ext4write, 6, 1, do_ext4_write,
 124         "create a file in the root directory",
 125         "<interface> <dev[:part]> <addr> <absolute filename path> [sizebytes]\n"
 126         "    - create a file in / directory");
 127
 128 #endif
 129
 130 U_BOOT_CMD(ext4ls, 4, 1, do_ext4_ls,
 131            "list files in a directory (default /)",
 132            "<interface> <dev[:part]> [directory]\n"
 133            "    - list files from 'dev' on 'interface' in a 'directory'");
 134
 135 U_BOOT_CMD(ext4load, 6, 0, do_ext4_load,
 136            "load binary file from a Ext4 filesystem",
 137            "<interface> <dev[:part]> [addr] [filename] [bytes]\n"
 138            "    - load binary file 'filename' from 'dev' on 'interface'\n"
 139            "      to address 'addr' from ext4 filesystem.\n"
 140            "      All numeric parameters are assumed to be hex.");