common/cmd_cramfs.c

   1 /*
   2  * SPDX-License-Identifier:     GPL-2.0+
   3  *
   4  * based on: cmd_jffs2.c
   5  *
   6  *      Add support for a CRAMFS located in RAM
   7  */
   8
   9
  10 /*
  11  * CRAMFS support
  12  */
  13 #include <common.h>
  14 #include <command.h>
  15 #include <malloc.h>
  16 #include <linux/list.h>
  17 #include <linux/ctype.h>
  18 #include <jffs2/jffs2.h>
  19 #include <jffs2/load_kernel.h>
  20 #include <cramfs/cramfs_fs.h>
  21
  22 /* enable/disable debugging messages */
  23 #define DEBUG_CRAMFS
  24 #undef  DEBUG_CRAMFS
  25
  26 #ifdef  DEBUG_CRAMFS
  27 # define DEBUGF(fmt, args...)   printf(fmt ,##args)
  28 #else
  29 # define DEBUGF(fmt, args...)
  30 #endif
  31
  32 #ifdef CONFIG_CRAMFS_CMDLINE
  33 #include <flash.h>
  34
  35 #ifdef CONFIG_SYS_NO_FLASH
  36 # define OFFSET_ADJUSTMENT      0
  37 #else
  38 # define OFFSET_ADJUSTMENT      (flash_info[id.num].start[0])
  39 #endif
  40
  41 #ifndef CONFIG_CMD_JFFS2
  42 #include <linux/stat.h>
  43 char *mkmodestr(unsigned long mode, char *str)
  44 {
  45         static const char *l = "xwr";
  46         int mask = 1, i;
  47         char c;
  48
  49         switch (mode & S_IFMT) {
  50                 case S_IFDIR:    str[0] = 'd'; break;
  51                 case S_IFBLK:    str[0] = 'b'; break;
  52                 case S_IFCHR:    str[0] = 'c'; break;
  53                 case S_IFIFO:    str[0] = 'f'; break;
  54                 case S_IFLNK:    str[0] = 'l'; break;
  55                 case S_IFSOCK:   str[0] = 's'; break;
  56                 case S_IFREG:    str[0] = '-'; break;
  57                 default:         str[0] = '?';
  58         }
  59
  60         for(i = 0; i < 9; i++) {
  61                 c = l[i%3];
  62                 str[9-i] = (mode & mask)?c:'-';
  63                 mask = mask<<1;
  64         }
  65
  66         if(mode & S_ISUID) str[3] = (mode & S_IXUSR)?'s':'S';
  67         if(mode & S_ISGID) str[6] = (mode & S_IXGRP)?'s':'S';
  68         if(mode & S_ISVTX) str[9] = (mode & S_IXOTH)?'t':'T';
  69         str[10] = '\0';
  70         return str;
  71 }
  72 #endif /* CONFIG_CMD_JFFS2 */
  73
  74 extern int cramfs_check (struct part_info *info);
  75 extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
  76 extern int cramfs_ls (struct part_info *info, char *filename);
  77 extern int cramfs_info (struct part_info *info);
  78
  79 /***************************************************/
  80 /* U-boot commands                                 */
  81 /***************************************************/
  82
  83 /**
  84  * Routine implementing fsload u-boot command. This routine tries to load
  85  * a requested file from cramfs filesystem at location 'cramfsaddr'.
  86  * cramfsaddr is an evironment variable.
  87  *
  88  * @param cmdtp command internal data
  89  * @param flag command flag
  90  * @param argc number of arguments supplied to the command
  91  * @param argv arguments list
  92  * @return 0 on success, 1 otherwise
  93  */
  94 int do_cramfs_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  95 {
  96         char *filename;
  97         int size;
  98         ulong offset = load_addr;
  99
 100         struct part_info part;
 101         struct mtd_device dev;
 102         struct mtdids id;
 103
 104         ulong addr;
 105         addr = simple_strtoul(getenv("cramfsaddr"), NULL, 16);
 106
 107         /* hack! */
 108         /* cramfs_* only supports NOR flash chips */
 109         /* fake the device type */
 110         id.type = MTD_DEV_TYPE_NOR;
 111         id.num = 0;
 112         dev.id = &id;
 113         part.dev = &dev;
 114         /* fake the address offset */
 115         part.offset = addr - OFFSET_ADJUSTMENT;
 116
 117         /* pre-set Boot file name */
 118         if ((filename = getenv("bootfile")) == NULL) {
 119                 filename = "uImage";
 120         }
 121
 122         if (argc == 2) {
 123                 filename = argv[1];
 124         }
 125         if (argc == 3) {
 126                 offset = simple_strtoul(argv[1], NULL, 0);
 127                 load_addr = offset;
 128                 filename = argv[2];
 129         }
 130
 131         size = 0;
 132         if (cramfs_check(&part))
 133                 size = cramfs_load ((char *) offset, &part, filename);
 134
 135         if (size > 0) {
 136                 printf("### CRAMFS load complete: %d bytes loaded to 0x%lx\n",
 137                         size, offset);
 138                 setenv_hex("filesize", size);
 139         } else {
 140                 printf("### CRAMFS LOAD ERROR<%x> for %s!\n", size, filename);
 141         }
 142
 143         return !(size > 0);
 144 }
 145
 146 /**
 147  * Routine implementing u-boot ls command which lists content of a given
 148  * directory at location 'cramfsaddr'.
 149  * cramfsaddr is an evironment variable.
 150  *
 151  * @param cmdtp command internal data
 152  * @param flag command flag
 153  * @param argc number of arguments supplied to the command
 154  * @param argv arguments list
 155  * @return 0 on success, 1 otherwise
 156  */
 157 int do_cramfs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 158 {
 159         char *filename = "/";
 160         int ret;
 161         struct part_info part;
 162         struct mtd_device dev;
 163         struct mtdids id;
 164
 165         ulong addr;
 166         addr = simple_strtoul(getenv("cramfsaddr"), NULL, 16);
 167
 168         /* hack! */
 169         /* cramfs_* only supports NOR flash chips */
 170         /* fake the device type */
 171         id.type = MTD_DEV_TYPE_NOR;
 172         id.num = 0;
 173         dev.id = &id;
 174         part.dev = &dev;
 175         /* fake the address offset */
 176         part.offset = addr - OFFSET_ADJUSTMENT;
 177
 178         if (argc == 2)
 179                 filename = argv[1];
 180
 181         ret = 0;
 182         if (cramfs_check(&part))
 183                 ret = cramfs_ls (&part, filename);
 184
 185         return ret ? 0 : 1;
 186 }
 187
 188 /* command line only */
 189
 190 /***************************************************/
 191 U_BOOT_CMD(
 192         cramfsload,     3,      0,      do_cramfs_load,
 193         "load binary file from a filesystem image",
 194         "[ off ] [ filename ]\n"
 195         "    - load binary file from address 'cramfsaddr'\n"
 196         "      with offset 'off'\n"
 197 );
 198 U_BOOT_CMD(
 199         cramfsls,       2,      1,      do_cramfs_ls,
 200         "list files in a directory (default /)",
 201         "[ directory ]\n"
 202         "    - list files in a directory.\n"
 203 );
 204
 205 #endif /* #ifdef CONFIG_CRAMFS_CMDLINE */
 206
 207 /***************************************************/