fastboot.c 3.4 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright 2008 - 2009 Windriver, <www.windriver.com>
  4. * Author: Tom Rix <Tom.Rix@windriver.com>
  5. *
  6. * (C) Copyright 2014 Linaro, Ltd.
  7. * Rob Herring <robh@kernel.org>
  8. */
  9. #include <common.h>
  10. #include <command.h>
  11. #include <console.h>
  12. #include <g_dnl.h>
  13. #include <fastboot.h>
  14. #include <net.h>
  15. #include <usb.h>
  16. #include <watchdog.h>
  17. #include <linux/stringify.h>
  18. static int do_fastboot_udp(int argc, char *const argv[],
  19. uintptr_t buf_addr, size_t buf_size)
  20. {
  21. #if CONFIG_IS_ENABLED(UDP_FUNCTION_FASTBOOT)
  22. int err = net_loop(FASTBOOT);
  23. if (err < 0) {
  24. printf("fastboot udp error: %d\n", err);
  25. return CMD_RET_FAILURE;
  26. }
  27. return CMD_RET_SUCCESS;
  28. #else
  29. pr_err("Fastboot UDP not enabled\n");
  30. return CMD_RET_FAILURE;
  31. #endif
  32. }
  33. static int do_fastboot_usb(int argc, char *const argv[],
  34. uintptr_t buf_addr, size_t buf_size)
  35. {
  36. #if CONFIG_IS_ENABLED(USB_FUNCTION_FASTBOOT)
  37. int controller_index;
  38. char *usb_controller;
  39. char *endp;
  40. int ret;
  41. if (argc < 2)
  42. return CMD_RET_USAGE;
  43. usb_controller = argv[1];
  44. controller_index = simple_strtoul(usb_controller, &endp, 0);
  45. if (*endp != '\0') {
  46. pr_err("Error: Wrong USB controller index format\n");
  47. return CMD_RET_FAILURE;
  48. }
  49. ret = usb_gadget_initialize(controller_index);
  50. if (ret) {
  51. pr_err("USB init failed: %d\n", ret);
  52. return CMD_RET_FAILURE;
  53. }
  54. g_dnl_clear_detach();
  55. ret = g_dnl_register("usb_dnl_fastboot");
  56. if (ret)
  57. return ret;
  58. if (!g_dnl_board_usb_cable_connected()) {
  59. puts("\rUSB cable not detected.\n" \
  60. "Command exit.\n");
  61. ret = CMD_RET_FAILURE;
  62. goto exit;
  63. }
  64. while (1) {
  65. if (g_dnl_detach())
  66. break;
  67. if (ctrlc())
  68. break;
  69. WATCHDOG_RESET();
  70. usb_gadget_handle_interrupts(controller_index);
  71. }
  72. ret = CMD_RET_SUCCESS;
  73. exit:
  74. g_dnl_unregister();
  75. g_dnl_clear_detach();
  76. usb_gadget_release(controller_index);
  77. return ret;
  78. #else
  79. pr_err("Fastboot USB not enabled\n");
  80. return CMD_RET_FAILURE;
  81. #endif
  82. }
  83. static int do_fastboot(struct cmd_tbl *cmdtp, int flag, int argc,
  84. char *const argv[])
  85. {
  86. uintptr_t buf_addr = (uintptr_t)NULL;
  87. size_t buf_size = 0;
  88. if (argc < 2)
  89. return CMD_RET_USAGE;
  90. while (argc > 1 && **(argv + 1) == '-') {
  91. char *arg = *++argv;
  92. --argc;
  93. while (*++arg) {
  94. switch (*arg) {
  95. case 'l':
  96. if (--argc <= 0)
  97. return CMD_RET_USAGE;
  98. buf_addr = simple_strtoul(*++argv, NULL, 16);
  99. goto NXTARG;
  100. case 's':
  101. if (--argc <= 0)
  102. return CMD_RET_USAGE;
  103. buf_size = simple_strtoul(*++argv, NULL, 16);
  104. goto NXTARG;
  105. default:
  106. return CMD_RET_USAGE;
  107. }
  108. }
  109. NXTARG:
  110. ;
  111. }
  112. /* Handle case when USB controller param is just '-' */
  113. if (argc == 1) {
  114. pr_err("Error: Incorrect USB controller index\n");
  115. return CMD_RET_USAGE;
  116. }
  117. fastboot_init((void *)buf_addr, buf_size);
  118. if (!strcmp(argv[1], "udp"))
  119. return do_fastboot_udp(argc, argv, buf_addr, buf_size);
  120. if (!strcmp(argv[1], "usb")) {
  121. argv++;
  122. argc--;
  123. }
  124. return do_fastboot_usb(argc, argv, buf_addr, buf_size);
  125. }
  126. #ifdef CONFIG_SYS_LONGHELP
  127. static char fastboot_help_text[] =
  128. "[-l addr] [-s size] usb <controller> | udp\n"
  129. "\taddr - address of buffer used during data transfers ("
  130. __stringify(CONFIG_FASTBOOT_BUF_ADDR) ")\n"
  131. "\tsize - size of buffer used during data transfers ("
  132. __stringify(CONFIG_FASTBOOT_BUF_SIZE) ")"
  133. ;
  134. #endif
  135. U_BOOT_CMD(
  136. fastboot, CONFIG_SYS_MAXARGS, 1, do_fastboot,
  137. "run as a fastboot usb or udp device", fastboot_help_text
  138. );