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 <ext_common.h>
  51 #include <ext4fs.h>
  52 #include <linux/stat.h>
  53 #include <malloc.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         if (do_ext_load(cmdtp, flag, argc, argv))
  63                 return -1;
  64
  65         return 0;
  66 }
  67
  68 int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  69 {
  70         if (do_ext_ls(cmdtp, flag, argc, argv))
  71                 return -1;
  72
  73         return 0;
  74 }
  75
  76 #if defined(CONFIG_CMD_EXT4_WRITE)
  77 int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc,
  78                                 char *const argv[])
  79 {
  80         const char *filename = "/";
  81         int dev, part;
  82         unsigned long ram_address;
  83         unsigned long file_size;
  84         disk_partition_t info;
  85         block_dev_desc_t *dev_desc;
  86
  87         if (argc < 6)
  88                 return cmd_usage(cmdtp);
  89
  90         part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1);
  91         if (part < 0)
  92                 return 1;
  93
  94         dev = dev_desc->dev;
  95
  96         /* get the filename */
  97         filename = argv[3];
  98
  99         /* get the address in hexadecimal format (string to int) */
 100         ram_address = simple_strtoul(argv[4], NULL, 16);
 101
 102         /* get the filesize in base 10 format */
 103         file_size = simple_strtoul(argv[5], NULL, 10);
 104
 105         /* set the device as block device */
 106         ext4fs_set_blk_dev(dev_desc, &info);
 107
 108         /* mount the filesystem */
 109         if (!ext4fs_mount(info.size)) {
 110                 printf("Bad ext4 partition %s %d:%lu\n", argv[1], dev, part);
 111                 goto fail;
 112         }
 113
 114         /* start write */
 115         if (ext4fs_write(filename, (unsigned char *)ram_address, file_size)) {
 116                 printf("** Error ext4fs_write() **\n");
 117                 goto fail;
 118         }
 119         ext4fs_close();
 120
 121         return 0;
 122
 123 fail:
 124         ext4fs_close();
 125
 126         return 1;
 127 }
 128
 129 U_BOOT_CMD(ext4write, 6, 1, do_ext4_write,
 130         "create a file in the root directory",
 131         "<interface> <dev[:part]> [Absolute filename path] [Address] [sizebytes]\n"
 132         "         - create a file in / directory");
 133
 134 #endif
 135
 136 U_BOOT_CMD(ext4ls, 4, 1, do_ext4_ls,
 137            "list files in a directory (default /)",
 138            "<interface> <dev[:part]> [directory]\n"
 139            "      - list files from 'dev' on 'interface' in a 'directory'");
 140
 141 U_BOOT_CMD(ext4load, 6, 0, do_ext4_load,
 142            "load binary file from a Ext4 filesystem",
 143            "<interface> <dev[:part]> [addr] [filename] [bytes]\n"
 144            "      - load binary file 'filename' from 'dev' on 'interface'\n"
 145            "             to address 'addr' from ext4 filesystem");