host.c 4.2 KB

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