common/cmd_cramfs.c

   1 /*
   2  * This program is free software; you can redistribute it and/or
   3  * modify it under the terms of the GNU General Public License as
   4  * published by the Free Software Foundation; either version 2 of
   5  * the License, or (at your option) any later version.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program; if not, write to the Free Software
  14  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  15  * MA 02111-1307 USA
  16  *
  17  * based on: cmd_jffs2.c
  18  *
  19  *      Add support for a CRAMFS located in RAM
  20  */
  21
  22
  23 /*
  24  * CRAMFS support
  25  */
  26 #include <common.h>
  27 #include <command.h>
  28 #include <malloc.h>
  29 #include <linux/list.h>
  30 #include <linux/ctype.h>
  31 #include <jffs2/jffs2.h>
  32 #include <jffs2/load_kernel.h>
  33 #include <cramfs/cramfs_fs.h>
  34
  35 /* enable/disable debugging messages */
  36 #define DEBUG_CRAMFS
  37 #undef  DEBUG_CRAMFS
  38
  39 #ifdef  DEBUG_CRAMFS
  40 # define DEBUGF(fmt, args...)   printf(fmt ,##args)
  41 #else
  42 # define DEBUGF(fmt, args...)
  43 #endif
  44
  45 #ifdef CONFIG_CRAMFS_CMDLINE
  46 #include <flash.h>
  47
  48 #ifdef CONFIG_SYS_NO_FLASH
  49 # define OFFSET_ADJUSTMENT      0
  50 #else
  51 # define OFFSET_ADJUSTMENT      (flash_info[id.num].start[0])
  52 #endif
  53
  54 #ifndef CONFIG_CMD_JFFS2
  55 #include <linux/stat.h>
  56 char *mkmodestr(unsigned long mode, char *str)
  57 {
  58         static const char *l = "xwr";
  59         int mask = 1, i;
  60         char c;
  61
  62         switch (mode & S_IFMT) {
  63                 case S_IFDIR:    str[0] = 'd'; break;
  64                 case S_IFBLK:    str[0] = 'b'; break;
  65                 case S_IFCHR:    str[0] = 'c'; break;
  66                 case S_IFIFO:    str[0] = 'f'; break;
  67                 case S_IFLNK:    str[0] = 'l'; break;
  68                 case S_IFSOCK:   str[0] = 's'; break;
  69                 case S_IFREG:    str[0] = '-'; break;
  70                 default:         str[0] = '?';
  71         }
  72
  73         for(i = 0; i < 9; i++) {
  74                 c = l[i%3];
  75                 str[9-i] = (mode & mask)?c:'-';
  76                 mask = mask<<1;
  77         }
  78
  79         if(mode & S_ISUID) str[3] = (mode & S_IXUSR)?'s':'S';
  80         if(mode & S_ISGID) str[6] = (mode & S_IXGRP)?'s':'S';
  81         if(mode & S_ISVTX) str[9] = (mode & S_IXOTH)?'t':'T';
  82         str[10] = '\0';
  83         return str;
  84 }
  85 #endif /* CONFIG_CMD_JFFS2 */
  86
  87 extern int cramfs_check (struct part_info *info);
  88 extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
  89 extern int cramfs_ls (struct part_info *info, char *filename);
  90 extern int cramfs_info (struct part_info *info);
  91
  92 /***************************************************/
  93 /* U-boot commands                                 */
  94 /***************************************************/
  95
  96 /**
  97  * Routine implementing fsload u-boot command. This routine tries to load
  98  * a requested file from cramfs filesystem at location 'cramfsaddr'.
  99  * cramfsaddr is an evironment variable.
 100  *
 101  * @param cmdtp command internal data
 102  * @param flag command flag
 103  * @param argc number of arguments supplied to the command
 104  * @param argv arguments list
 105  * @return 0 on success, 1 otherwise
 106  */
 107 int do_cramfs_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 108 {
 109         char *filename;
 110         int size;
 111         ulong offset = load_addr;
 112
 113         struct part_info part;
 114         struct mtd_device dev;
 115         struct mtdids id;
 116
 117         ulong addr;
 118         addr = simple_strtoul(getenv("cramfsaddr"), NULL, 16);
 119
 120         /* hack! */
 121         /* cramfs_* only supports NOR flash chips */
 122         /* fake the device type */
 123         id.type = MTD_DEV_TYPE_NOR;
 124         id.num = 0;
 125         dev.id = &id;
 126         part.dev = &dev;
 127         /* fake the address offset */
 128         part.offset = addr - OFFSET_ADJUSTMENT;
 129
 130         /* pre-set Boot file name */
 131         if ((filename = getenv("bootfile")) == NULL) {
 132                 filename = "uImage";
 133         }
 134
 135         if (argc == 2) {
 136                 filename = argv[1];
 137         }
 138         if (argc == 3) {
 139                 offset = simple_strtoul(argv[1], NULL, 0);
 140                 load_addr = offset;
 141                 filename = argv[2];
 142         }
 143
 144         size = 0;
 145         if (cramfs_check(&part))
 146                 size = cramfs_load ((char *) offset, &part, filename);
 147
 148         if (size > 0) {
 149                 char buf[10];
 150                 printf("### CRAMFS load complete: %d bytes loaded to 0x%lx\n",
 151                         size, offset);
 152                 sprintf(buf, "%x", size);
 153                 setenv("filesize", buf);
 154         } else {
 155                 printf("### CRAMFS LOAD ERROR<%x> for %s!\n", size, filename);
 156         }
 157
 158         return !(size > 0);
 159 }
 160
 161 /**
 162  * Routine implementing u-boot ls command which lists content of a given
 163  * directory at location 'cramfsaddr'.
 164  * cramfsaddr is an evironment variable.
 165  *
 166  * @param cmdtp command internal data
 167  * @param flag command flag
 168  * @param argc number of arguments supplied to the command
 169  * @param argv arguments list
 170  * @return 0 on success, 1 otherwise
 171  */
 172 int do_cramfs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 173 {
 174         char *filename = "/";
 175         int ret;
 176         struct part_info part;
 177         struct mtd_device dev;
 178         struct mtdids id;
 179
 180         ulong addr;
 181         addr = simple_strtoul(getenv("cramfsaddr"), NULL, 16);
 182
 183         /* hack! */
 184         /* cramfs_* only supports NOR flash chips */
 185         /* fake the device type */
 186         id.type = MTD_DEV_TYPE_NOR;
 187         id.num = 0;
 188         dev.id = &id;
 189         part.dev = &dev;
 190         /* fake the address offset */
 191         part.offset = addr - OFFSET_ADJUSTMENT;
 192
 193         if (argc == 2)
 194                 filename = argv[1];
 195
 196         ret = 0;
 197         if (cramfs_check(&part))
 198                 ret = cramfs_ls (&part, filename);
 199
 200         return ret ? 0 : 1;
 201 }
 202
 203 /* command line only */
 204
 205 /***************************************************/
 206 U_BOOT_CMD(
 207         cramfsload,     3,      0,      do_cramfs_load,
 208         "load binary file from a filesystem image",
 209         "[ off ] [ filename ]\n"
 210         "    - load binary file from address 'cramfsaddr'\n"
 211         "      with offset 'off'\n"
 212 );
 213 U_BOOT_CMD(
 214         cramfsls,       2,      1,      do_cramfs_ls,
 215         "list files in a directory (default /)",
 216         "[ directory ]\n"
 217         "    - list files in a directory.\n"
 218 );
 219
 220 #endif /* #ifdef CONFIG_CRAMFS_CMDLINE */
 221
 222 /***************************************************/