cmd_usb_mass_storage.c 3.5 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164
  1. /*
  2. * Copyright (C) 2011 Samsung Electronics
  3. * Lukasz Majewski <l.majewski@samsung.com>
  4. *
  5. * SPDX-License-Identifier: GPL-2.0+
  6. */
  7. #include <errno.h>
  8. #include <common.h>
  9. #include <command.h>
  10. #include <g_dnl.h>
  11. #include <part.h>
  12. #include <usb.h>
  13. #include <usb_mass_storage.h>
  14. static int ums_read_sector(struct ums *ums_dev,
  15. ulong start, lbaint_t blkcnt, void *buf)
  16. {
  17. block_dev_desc_t *block_dev = ums_dev->block_dev;
  18. lbaint_t blkstart = start + ums_dev->start_sector;
  19. int dev_num = block_dev->dev;
  20. return block_dev->block_read(dev_num, blkstart, blkcnt, buf);
  21. }
  22. static int ums_write_sector(struct ums *ums_dev,
  23. ulong start, lbaint_t blkcnt, const void *buf)
  24. {
  25. block_dev_desc_t *block_dev = ums_dev->block_dev;
  26. lbaint_t blkstart = start + ums_dev->start_sector;
  27. int dev_num = block_dev->dev;
  28. return block_dev->block_write(dev_num, blkstart, blkcnt, buf);
  29. }
  30. static struct ums ums_dev = {
  31. .read_sector = ums_read_sector,
  32. .write_sector = ums_write_sector,
  33. .name = "UMS disk",
  34. };
  35. struct ums *ums_init(const char *devtype, const char *devnum)
  36. {
  37. block_dev_desc_t *block_dev;
  38. int ret;
  39. ret = get_device(devtype, devnum, &block_dev);
  40. if (ret < 0)
  41. return NULL;
  42. /* f_mass_storage.c assumes SECTOR_SIZE sectors */
  43. if (block_dev->blksz != SECTOR_SIZE)
  44. return NULL;
  45. ums_dev.block_dev = block_dev;
  46. ums_dev.start_sector = 0;
  47. ums_dev.num_sectors = block_dev->lba;
  48. printf("UMS: disk start sector: %#x, count: %#x\n",
  49. ums_dev.start_sector, ums_dev.num_sectors);
  50. return &ums_dev;
  51. }
  52. int do_usb_mass_storage(cmd_tbl_t *cmdtp, int flag,
  53. int argc, char * const argv[])
  54. {
  55. const char *usb_controller;
  56. const char *devtype;
  57. const char *devnum;
  58. struct ums *ums;
  59. unsigned int controller_index;
  60. int rc;
  61. int cable_ready_timeout __maybe_unused;
  62. if (argc < 3)
  63. return CMD_RET_USAGE;
  64. usb_controller = argv[1];
  65. if (argc >= 4) {
  66. devtype = argv[2];
  67. devnum = argv[3];
  68. } else {
  69. devtype = "mmc";
  70. devnum = argv[2];
  71. }
  72. ums = ums_init(devtype, devnum);
  73. if (!ums)
  74. return CMD_RET_FAILURE;
  75. controller_index = (unsigned int)(simple_strtoul(
  76. usb_controller, NULL, 0));
  77. if (board_usb_init(controller_index, USB_INIT_DEVICE)) {
  78. error("Couldn't init USB controller.");
  79. return CMD_RET_FAILURE;
  80. }
  81. rc = fsg_init(ums);
  82. if (rc) {
  83. error("fsg_init failed");
  84. return CMD_RET_FAILURE;
  85. }
  86. rc = g_dnl_register("usb_dnl_ums");
  87. if (rc) {
  88. error("g_dnl_register failed");
  89. return CMD_RET_FAILURE;
  90. }
  91. /* Timeout unit: seconds */
  92. cable_ready_timeout = UMS_CABLE_READY_TIMEOUT;
  93. if (!g_dnl_board_usb_cable_connected()) {
  94. /*
  95. * Won't execute if we don't know whether the cable is
  96. * connected.
  97. */
  98. puts("Please connect USB cable.\n");
  99. while (!g_dnl_board_usb_cable_connected()) {
  100. if (ctrlc()) {
  101. puts("\rCTRL+C - Operation aborted.\n");
  102. goto exit;
  103. }
  104. if (!cable_ready_timeout) {
  105. puts("\rUSB cable not detected.\n" \
  106. "Command exit.\n");
  107. goto exit;
  108. }
  109. printf("\rAuto exit in: %.2d s.", cable_ready_timeout);
  110. mdelay(1000);
  111. cable_ready_timeout--;
  112. }
  113. puts("\r\n");
  114. }
  115. while (1) {
  116. usb_gadget_handle_interrupts();
  117. rc = fsg_main_thread(NULL);
  118. if (rc) {
  119. /* Check I/O error */
  120. if (rc == -EIO)
  121. printf("\rCheck USB cable connection\n");
  122. /* Check CTRL+C */
  123. if (rc == -EPIPE)
  124. printf("\rCTRL+C - Operation aborted\n");
  125. goto exit;
  126. }
  127. }
  128. exit:
  129. g_dnl_unregister();
  130. return CMD_RET_SUCCESS;
  131. }
  132. U_BOOT_CMD(ums, 4, 1, do_usb_mass_storage,
  133. "Use the UMS [User Mass Storage]",
  134. "ums <USB_controller> [<devtype>] <devnum> e.g. ums 0 mmc 0\n"
  135. " devtype defaults to mmc"
  136. );