host.c 4.4 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (c) 2012, Google Inc.
  4. */
  5. #include <common.h>
  6. #include <dm.h>
  7. #include <fs.h>
  8. #include <part.h>
  9. #include <sandboxblockdev.h>
  10. #include <dm/device_compat.h>
  11. #include <linux/errno.h>
  12. static int host_curr_device = -1;
  13. static int do_host_load(cmd_tbl_t *cmdtp, int flag, int argc,
  14. char * const argv[])
  15. {
  16. return do_load(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
  17. }
  18. static int do_host_ls(cmd_tbl_t *cmdtp, int flag, int argc,
  19. char * const argv[])
  20. {
  21. return do_ls(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
  22. }
  23. static int do_host_size(cmd_tbl_t *cmdtp, int flag, int argc,
  24. char * const argv[])
  25. {
  26. return do_size(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
  27. }
  28. static int do_host_save(cmd_tbl_t *cmdtp, int flag, int argc,
  29. char * const argv[])
  30. {
  31. return do_save(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
  32. }
  33. static int do_host_bind(cmd_tbl_t *cmdtp, int flag, int argc,
  34. char * const argv[])
  35. {
  36. if (argc < 2 || argc > 3)
  37. return CMD_RET_USAGE;
  38. char *ep;
  39. char *dev_str = argv[1];
  40. char *file = argc >= 3 ? argv[2] : NULL;
  41. int dev = simple_strtoul(dev_str, &ep, 16);
  42. if (*ep) {
  43. printf("** Bad device specification %s **\n", dev_str);
  44. return CMD_RET_USAGE;
  45. }
  46. return host_dev_bind(dev, file);
  47. }
  48. static int do_host_info(cmd_tbl_t *cmdtp, int flag, int argc,
  49. char * const argv[])
  50. {
  51. if (argc < 1 || argc > 2)
  52. return CMD_RET_USAGE;
  53. int min_dev = 0;
  54. int max_dev = CONFIG_HOST_MAX_DEVICES - 1;
  55. if (argc >= 2) {
  56. char *ep;
  57. char *dev_str = argv[1];
  58. int dev = simple_strtoul(dev_str, &ep, 16);
  59. if (*ep) {
  60. printf("** Bad device specification %s **\n", dev_str);
  61. return CMD_RET_USAGE;
  62. }
  63. min_dev = dev;
  64. max_dev = dev;
  65. }
  66. int dev;
  67. printf("%3s %12s %s\n", "dev", "blocks", "path");
  68. for (dev = min_dev; dev <= max_dev; dev++) {
  69. struct blk_desc *blk_dev;
  70. int ret;
  71. printf("%3d ", dev);
  72. ret = host_get_dev_err(dev, &blk_dev);
  73. if (ret) {
  74. if (ret == -ENOENT)
  75. puts("Not bound to a backing file\n");
  76. else if (ret == -ENODEV)
  77. puts("Invalid host device number\n");
  78. continue;
  79. }
  80. struct host_block_dev *host_dev;
  81. #ifdef CONFIG_BLK
  82. host_dev = dev_get_platdata(blk_dev->bdev);
  83. #else
  84. host_dev = blk_dev->priv;
  85. #endif
  86. printf("%12lu %s\n", (unsigned long)blk_dev->lba,
  87. host_dev->filename);
  88. }
  89. return 0;
  90. }
  91. static int do_host_dev(cmd_tbl_t *cmdtp, int flag, int argc,
  92. char * const argv[])
  93. {
  94. int dev;
  95. char *ep;
  96. struct blk_desc *blk_dev;
  97. int ret;
  98. if (argc < 1 || argc > 3)
  99. return CMD_RET_USAGE;
  100. if (argc == 1) {
  101. if (host_curr_device < 0) {
  102. printf("No current host device\n");
  103. return 1;
  104. }
  105. printf("Current host device %d\n", host_curr_device);
  106. return 0;
  107. }
  108. dev = simple_strtoul(argv[1], &ep, 16);
  109. if (*ep) {
  110. printf("** Bad device specification %s **\n", argv[2]);
  111. return CMD_RET_USAGE;
  112. }
  113. ret = host_get_dev_err(dev, &blk_dev);
  114. if (ret) {
  115. if (ret == -ENOENT)
  116. puts("Not bound to a backing file\n");
  117. else if (ret == -ENODEV)
  118. puts("Invalid host device number\n");
  119. return 1;
  120. }
  121. host_curr_device = dev;
  122. return 0;
  123. }
  124. static cmd_tbl_t cmd_host_sub[] = {
  125. U_BOOT_CMD_MKENT(load, 7, 0, do_host_load, "", ""),
  126. U_BOOT_CMD_MKENT(ls, 3, 0, do_host_ls, "", ""),
  127. U_BOOT_CMD_MKENT(save, 6, 0, do_host_save, "", ""),
  128. U_BOOT_CMD_MKENT(size, 3, 0, do_host_size, "", ""),
  129. U_BOOT_CMD_MKENT(bind, 3, 0, do_host_bind, "", ""),
  130. U_BOOT_CMD_MKENT(info, 3, 0, do_host_info, "", ""),
  131. U_BOOT_CMD_MKENT(dev, 0, 1, do_host_dev, "", ""),
  132. };
  133. static int do_host(cmd_tbl_t *cmdtp, int flag, int argc,
  134. char * const argv[])
  135. {
  136. cmd_tbl_t *c;
  137. /* Skip past 'host' */
  138. argc--;
  139. argv++;
  140. c = find_cmd_tbl(argv[0], cmd_host_sub,
  141. ARRAY_SIZE(cmd_host_sub));
  142. if (c)
  143. return c->cmd(cmdtp, flag, argc, argv);
  144. else
  145. return CMD_RET_USAGE;
  146. }
  147. U_BOOT_CMD(
  148. host, 8, 1, do_host,
  149. "Miscellaneous host commands",
  150. "load hostfs - <addr> <filename> [<bytes> <offset>] - "
  151. "load a file from host\n"
  152. "host ls hostfs - <filename> - list files on host\n"
  153. "host save hostfs - <addr> <filename> <bytes> [<offset>] - "
  154. "save a file to host\n"
  155. "host size hostfs - <filename> - determine size of file on host\n"
  156. "host bind <dev> [<filename>] - bind \"host\" device to file\n"
  157. "host info [<dev>] - show device binding & info\n"
  158. "host dev [<dev>] - Set or retrieve the current host device\n"
  159. "host commands use the \"hostfs\" device. The \"host\" device is used\n"
  160. "with standard IO commands such as fatls or ext2load"
  161. );