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  * SPDX-License-Identifier:     GPL-2.0+
  21  */
  22
  23 /*
  24  * Changelog:
  25  *      0.1 - Newly created file for ext4fs support. Taken from cmd_ext2.c
  26  *              file in uboot. Added ext4fs ls load and write support.
  27  */
  28
  29 #include <common.h>
  30 #include <part.h>
  31 #include <config.h>
  32 #include <command.h>
  33 #include <image.h>
  34 #include <linux/ctype.h>
  35 #include <asm/byteorder.h>
  36 #include <ext4fs.h>
  37 #include <linux/stat.h>
  38 #include <malloc.h>
  39 #include <fs.h>
  40
  41 #if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
  42 #include <usb.h>
  43 #endif
  44
  45 int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
  46                                                 char *const argv[])
  47 {
  48         return do_load(cmdtp, flag, argc, argv, FS_TYPE_EXT, 16);
  49 }
  50
  51 int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  52 {
  53         return do_ls(cmdtp, flag, argc, argv, FS_TYPE_EXT);
  54 }
  55
  56 #if defined(CONFIG_CMD_EXT4_WRITE)
  57 int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc,
  58                                 char *const argv[])
  59 {
  60         const char *filename = "/";
  61         int dev, part;
  62         unsigned long ram_address;
  63         unsigned long file_size;
  64         disk_partition_t info;
  65         block_dev_desc_t *dev_desc;
  66
  67         if (argc < 6)
  68                 return cmd_usage(cmdtp);
  69
  70         part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1);
  71         if (part < 0)
  72                 return 1;
  73
  74         dev = dev_desc->dev;
  75
  76         /* get the filename */
  77         filename = argv[4];
  78
  79         /* get the address in hexadecimal format (string to int) */
  80         ram_address = simple_strtoul(argv[3], NULL, 16);
  81
  82         /* get the filesize in base 10 format */
  83         file_size = simple_strtoul(argv[5], NULL, 10);
  84
  85         /* set the device as block device */
  86         ext4fs_set_blk_dev(dev_desc, &info);
  87
  88         /* mount the filesystem */
  89         if (!ext4fs_mount(info.size)) {
  90                 printf("Bad ext4 partition %s %d:%d\n", argv[1], dev, part);
  91                 goto fail;
  92         }
  93
  94         /* start write */
  95         if (ext4fs_write(filename, (unsigned char *)ram_address, file_size)) {
  96                 printf("** Error ext4fs_write() **\n");
  97                 goto fail;
  98         }
  99         ext4fs_close();
 100
 101         return 0;
 102
 103 fail:
 104         ext4fs_close();
 105
 106         return 1;
 107 }
 108
 109 U_BOOT_CMD(ext4write, 6, 1, do_ext4_write,
 110         "create a file in the root directory",
 111         "<interface> <dev[:part]> <addr> <absolute filename path> [sizebytes]\n"
 112         "    - create a file in / directory");
 113
 114 #endif
 115
 116 U_BOOT_CMD(ext4ls, 4, 1, do_ext4_ls,
 117            "list files in a directory (default /)",
 118            "<interface> <dev[:part]> [directory]\n"
 119            "    - list files from 'dev' on 'interface' in a 'directory'");
 120
 121 U_BOOT_CMD(ext4load, 6, 0, do_ext4_load,
 122            "load binary file from a Ext4 filesystem",
 123            "<interface> <dev[:part]> [addr] [filename] [bytes]\n"
 124            "    - load binary file 'filename' from 'dev' on 'interface'\n"
 125            "      to address 'addr' from ext4 filesystem.\n"
 126            "      All numeric parameters are assumed to be hex.");