cramfs.c 5.0 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  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 <env.h>
  14. #include <malloc.h>
  15. #include <mapmem.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. #include <asm/io.h>
  22. /* enable/disable debugging messages */
  23. #define DEBUG_CRAMFS
  24. #undef DEBUG_CRAMFS
  25. #ifdef DEBUG_CRAMFS
  26. # define DEBUGF(fmt, args...) printf(fmt ,##args)
  27. #else
  28. # define DEBUGF(fmt, args...)
  29. #endif
  30. #include <flash.h>
  31. #ifndef CONFIG_MTD_NOR_FLASH
  32. # define OFFSET_ADJUSTMENT 0
  33. #else
  34. # define OFFSET_ADJUSTMENT (flash_info[id.num].start[0])
  35. #endif
  36. #ifndef CONFIG_FS_JFFS2
  37. #include <linux/stat.h>
  38. char *mkmodestr(unsigned long mode, char *str)
  39. {
  40. static const char *l = "xwr";
  41. int mask = 1, i;
  42. char c;
  43. switch (mode & S_IFMT) {
  44. case S_IFDIR: str[0] = 'd'; break;
  45. case S_IFBLK: str[0] = 'b'; break;
  46. case S_IFCHR: str[0] = 'c'; break;
  47. case S_IFIFO: str[0] = 'f'; break;
  48. case S_IFLNK: str[0] = 'l'; break;
  49. case S_IFSOCK: str[0] = 's'; break;
  50. case S_IFREG: str[0] = '-'; break;
  51. default: str[0] = '?';
  52. }
  53. for(i = 0; i < 9; i++) {
  54. c = l[i%3];
  55. str[9-i] = (mode & mask)?c:'-';
  56. mask = mask<<1;
  57. }
  58. if(mode & S_ISUID) str[3] = (mode & S_IXUSR)?'s':'S';
  59. if(mode & S_ISGID) str[6] = (mode & S_IXGRP)?'s':'S';
  60. if(mode & S_ISVTX) str[9] = (mode & S_IXOTH)?'t':'T';
  61. str[10] = '\0';
  62. return str;
  63. }
  64. #endif /* CONFIG_FS_JFFS2 */
  65. extern int cramfs_check (struct part_info *info);
  66. extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
  67. extern int cramfs_ls (struct part_info *info, char *filename);
  68. extern int cramfs_info (struct part_info *info);
  69. /***************************************************/
  70. /* U-Boot commands */
  71. /***************************************************/
  72. /**
  73. * Routine implementing fsload u-boot command. This routine tries to load
  74. * a requested file from cramfs filesystem at location 'cramfsaddr'.
  75. * cramfsaddr is an evironment variable.
  76. *
  77. * @param cmdtp command internal data
  78. * @param flag command flag
  79. * @param argc number of arguments supplied to the command
  80. * @param argv arguments list
  81. * @return 0 on success, 1 otherwise
  82. */
  83. int do_cramfs_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  84. {
  85. char *filename;
  86. int size;
  87. ulong offset = load_addr;
  88. char *offset_virt;
  89. struct part_info part;
  90. struct mtd_device dev;
  91. struct mtdids id;
  92. ulong addr;
  93. addr = simple_strtoul(env_get("cramfsaddr"), NULL, 16);
  94. /* hack! */
  95. /* cramfs_* only supports NOR flash chips */
  96. /* fake the device type */
  97. id.type = MTD_DEV_TYPE_NOR;
  98. id.num = 0;
  99. dev.id = &id;
  100. part.dev = &dev;
  101. /* fake the address offset */
  102. part.offset = (u64)(uintptr_t) map_sysmem(addr - OFFSET_ADJUSTMENT, 0);
  103. /* pre-set Boot file name */
  104. filename = env_get("bootfile");
  105. if (!filename)
  106. filename = "uImage";
  107. if (argc == 2) {
  108. filename = argv[1];
  109. }
  110. if (argc == 3) {
  111. offset = simple_strtoul(argv[1], NULL, 0);
  112. load_addr = offset;
  113. filename = argv[2];
  114. }
  115. offset_virt = map_sysmem(offset, 0);
  116. size = 0;
  117. if (cramfs_check(&part))
  118. size = cramfs_load (offset_virt, &part, filename);
  119. if (size > 0) {
  120. printf("### CRAMFS load complete: %d bytes loaded to 0x%lx\n",
  121. size, offset);
  122. env_set_hex("filesize", size);
  123. } else {
  124. printf("### CRAMFS LOAD ERROR<%x> for %s!\n", size, filename);
  125. }
  126. unmap_sysmem(offset_virt);
  127. unmap_sysmem((void *)(uintptr_t)part.offset);
  128. return !(size > 0);
  129. }
  130. /**
  131. * Routine implementing u-boot ls command which lists content of a given
  132. * directory at location 'cramfsaddr'.
  133. * cramfsaddr is an evironment variable.
  134. *
  135. * @param cmdtp command internal data
  136. * @param flag command flag
  137. * @param argc number of arguments supplied to the command
  138. * @param argv arguments list
  139. * @return 0 on success, 1 otherwise
  140. */
  141. int do_cramfs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  142. {
  143. char *filename = "/";
  144. int ret;
  145. struct part_info part;
  146. struct mtd_device dev;
  147. struct mtdids id;
  148. ulong addr;
  149. addr = simple_strtoul(env_get("cramfsaddr"), NULL, 16);
  150. /* hack! */
  151. /* cramfs_* only supports NOR flash chips */
  152. /* fake the device type */
  153. id.type = MTD_DEV_TYPE_NOR;
  154. id.num = 0;
  155. dev.id = &id;
  156. part.dev = &dev;
  157. /* fake the address offset */
  158. part.offset = (u64)(uintptr_t) map_sysmem(addr - OFFSET_ADJUSTMENT, 0);
  159. if (argc == 2)
  160. filename = argv[1];
  161. ret = 0;
  162. if (cramfs_check(&part))
  163. ret = cramfs_ls (&part, filename);
  164. unmap_sysmem((void *)(uintptr_t)part.offset);
  165. return ret ? 0 : 1;
  166. }
  167. /* command line only */
  168. /***************************************************/
  169. U_BOOT_CMD(
  170. cramfsload, 3, 0, do_cramfs_load,
  171. "load binary file from a filesystem image",
  172. "[ off ] [ filename ]\n"
  173. " - load binary file from address 'cramfsaddr'\n"
  174. " with offset 'off'\n"
  175. );
  176. U_BOOT_CMD(
  177. cramfsls, 2, 1, do_cramfs_ls,
  178. "list files in a directory (default /)",
  179. "[ directory ]\n"
  180. " - list files in a directory.\n"
  181. );