cmd_cramfs.c 4.8 KB

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