fastboot.h 4.3 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * (C) Copyright 2008 - 2009
  4. * Windriver, <www.windriver.com>
  5. * Tom Rix <Tom.Rix@windriver.com>
  6. *
  7. * Copyright 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de>
  8. *
  9. * Copyright 2014 Linaro, Ltd.
  10. * Rob Herring <robh@kernel.org>
  11. */
  12. #ifndef _FASTBOOT_H_
  13. #define _FASTBOOT_H_
  14. #define FASTBOOT_VERSION "0.4"
  15. /* The 64 defined bytes plus \0 */
  16. #define FASTBOOT_COMMAND_LEN (64 + 1)
  17. #define FASTBOOT_RESPONSE_LEN (64 + 1)
  18. /**
  19. * All known commands to fastboot
  20. */
  21. enum {
  22. FASTBOOT_COMMAND_GETVAR = 0,
  23. FASTBOOT_COMMAND_DOWNLOAD,
  24. #if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
  25. FASTBOOT_COMMAND_FLASH,
  26. FASTBOOT_COMMAND_ERASE,
  27. #endif
  28. FASTBOOT_COMMAND_BOOT,
  29. FASTBOOT_COMMAND_CONTINUE,
  30. FASTBOOT_COMMAND_REBOOT,
  31. FASTBOOT_COMMAND_REBOOT_BOOTLOADER,
  32. FASTBOOT_COMMAND_SET_ACTIVE,
  33. FASTBOOT_COMMAND_COUNT
  34. };
  35. /**
  36. * fastboot_response() - Writes a response of the form "$tag$reason".
  37. *
  38. * @tag: The first part of the response
  39. * @response: Pointer to fastboot response buffer
  40. * @format: printf style format string
  41. */
  42. void fastboot_response(const char *tag, char *response,
  43. const char *format, ...)
  44. __attribute__ ((format (__printf__, 3, 4)));
  45. /**
  46. * fastboot_fail() - Write a FAIL response of the form "FAIL$reason".
  47. *
  48. * @reason: Pointer to returned reason string
  49. * @response: Pointer to fastboot response buffer
  50. */
  51. void fastboot_fail(const char *reason, char *response);
  52. /**
  53. * fastboot_okay() - Write an OKAY response of the form "OKAY$reason".
  54. *
  55. * @reason: Pointer to returned reason string, or NULL to send a bare "OKAY"
  56. * @response: Pointer to fastboot response buffer
  57. */
  58. void fastboot_okay(const char *reason, char *response);
  59. /**
  60. * fastboot_set_reboot_flag() - Set flag to indicate reboot-bootloader
  61. *
  62. * Set flag which indicates that we should reboot into the bootloader
  63. * following the reboot that fastboot executes after this function.
  64. *
  65. * This function should be overridden in your board file with one
  66. * which sets whatever flag your board specific Android bootloader flow
  67. * requires in order to re-enter the bootloader.
  68. */
  69. int fastboot_set_reboot_flag(void);
  70. /**
  71. * fastboot_set_progress_callback() - set progress callback
  72. *
  73. * @progress: Pointer to progress callback
  74. *
  75. * Set a callback which is invoked periodically during long running operations
  76. * (flash and erase). This can be used (for example) by the UDP transport to
  77. * send INFO responses to keep the client alive whilst those commands are
  78. * executing.
  79. */
  80. void fastboot_set_progress_callback(void (*progress)(const char *msg));
  81. /*
  82. * fastboot_init() - initialise new fastboot protocol session
  83. *
  84. * @buf_addr: Pointer to download buffer, or NULL for default
  85. * @buf_size: Size of download buffer, or zero for default
  86. */
  87. void fastboot_init(void *buf_addr, u32 buf_size);
  88. /**
  89. * fastboot_boot() - Execute fastboot boot command
  90. *
  91. * If ${fastboot_bootcmd} is set, run that command to execute the boot
  92. * process, if that returns, then exit the fastboot server and return
  93. * control to the caller.
  94. *
  95. * Otherwise execute "bootm <fastboot_buf_addr>", if that fails, reset
  96. * the board.
  97. */
  98. void fastboot_boot(void);
  99. /**
  100. * fastboot_handle_command() - Handle fastboot command
  101. *
  102. * @cmd_string: Pointer to command string
  103. * @response: Pointer to fastboot response buffer
  104. *
  105. * Return: Executed command, or -1 if not recognized
  106. */
  107. int fastboot_handle_command(char *cmd_string, char *response);
  108. /**
  109. * fastboot_data_remaining() - return bytes remaining in current transfer
  110. *
  111. * Return: Number of bytes left in the current download
  112. */
  113. u32 fastboot_data_remaining(void);
  114. /**
  115. * fastboot_data_download() - Copy image data to fastboot_buf_addr.
  116. *
  117. * @fastboot_data: Pointer to received fastboot data
  118. * @fastboot_data_len: Length of received fastboot data
  119. * @response: Pointer to fastboot response buffer
  120. *
  121. * Copies image data from fastboot_data to fastboot_buf_addr. Writes to
  122. * response. fastboot_bytes_received is updated to indicate the number
  123. * of bytes that have been transferred.
  124. */
  125. void fastboot_data_download(const void *fastboot_data,
  126. unsigned int fastboot_data_len, char *response);
  127. /**
  128. * fastboot_data_complete() - Mark current transfer complete
  129. *
  130. * @response: Pointer to fastboot response buffer
  131. *
  132. * Set image_size and ${filesize} to the total size of the downloaded image.
  133. */
  134. void fastboot_data_complete(char *response);
  135. #endif /* _FASTBOOT_H_ */