Bootloaders/DFU/BootloaderDFU.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *
  33  *  Header file for BootloaderDFU.c.
  34  */
  35
  36 #ifndef _BOOTLOADER_H_
  37 #define _BOOTLOADER_H_
  38
  39         /* Includes: */
  40                 #include <avr/io.h>
  41                 #include <avr/wdt.h>
  42                 #include <avr/boot.h>
  43                 #include <avr/pgmspace.h>
  44                 #include <avr/eeprom.h>
  45                 #include <avr/power.h>
  46                 #include <stdbool.h>
  47
  48                 #include "Descriptors.h"
  49
  50                 #include <LUFA/Drivers/USB/USB.h>
  51
  52         /* Macros: */
  53                 /** Configuration define. Define this token to true to case the bootloader to reject all memory commands
  54                  *  until a memory erase has been performed. When used in conjunction with the lockbits of the AVR, this
  55                  *  can protect the AVR's firmware from being dumped from a secured AVR. When false, memory operations are
  56                  *  allowed at any time.
  57                  */
  58                 #define SECURE_MODE              false
  59
  60                 /** Major bootloader version number. */
  61                 #define BOOTLOADER_VERSION_MINOR 2
  62
  63                 /** Minor bootloader version number. */
  64                 #define BOOTLOADER_VERSION_REV   0
  65
  66                 /** Complete bootloader version number expressed as a packed byte, constructed from the
  67                  *  two individual bootloader version macros.
  68                  */
  69                 #define BOOTLOADER_VERSION       ((BOOTLOADER_VERSION_MINOR << 4) | BOOTLOADER_VERSION_REV)
  70
  71                 /** First byte of the bootloader identification bytes, used to identify a device's bootloader. */
  72                 #define BOOTLOADER_ID_BYTE1      0xDC
  73
  74                 /** Second byte of the bootloader identification bytes, used to identify a device's bootloader. */
  75                 #define BOOTLOADER_ID_BYTE2      0xFB
  76
  77                 /** Convenience macro, used to determine if the issued command is the given one-byte long command.
  78                  *
  79                  *  \param[in] dataarr  Command byte array to check against
  80                  *  \param[in] cb1      First command byte to check
  81                  */
  82                 #define IS_ONEBYTE_COMMAND(dataarr, cb1)       (dataarr[0] == (cb1))
  83
  84                 /** Convenience macro, used to determine if the issued command is the given two-byte long command.
  85                  *
  86                  *  \param[in] dataarr  Command byte array to check against
  87                  *  \param[in] cb1      First command byte to check
  88                  *  \param[in] cb2      Second command byte to check
  89                  */
  90                 #define IS_TWOBYTE_COMMAND(dataarr, cb1, cb2) ((dataarr[0] == (cb1)) && (dataarr[1] == (cb2)))
  91
  92                 /** Length of the DFU file suffix block, appended to the end of each complete memory write command.
  93                  *  The DFU file suffix is currently unused (but is designed to give extra file information, such as
  94                  *  a CRC of the complete firmware for error checking) and so is discarded.
  95                  */
  96                 #define DFU_FILE_SUFFIX_SIZE     16
  97
  98                 /** Length of the DFU file filler block, appended to the start of each complete memory write command.
  99                  *  Filler bytes are added to the start of each complete memory write command, and must be discarded.
 100                  */
 101                 #define DFU_FILLER_BYTES_SIZE    26
 102
 103                 /** DFU class command request to detach from the host. */
 104                 #define DFU_DETATCH              0x00
 105
 106                 /** DFU class command request to send data from the host to the bootloader. */
 107                 #define DFU_DNLOAD               0x01
 108
 109                 /** DFU class command request to send data from the bootloader to the host. */
 110                 #define DFU_UPLOAD               0x02
 111
 112                 /** DFU class command request to get the current DFU status and state from the bootloader. */
 113                 #define DFU_GETSTATUS            0x03
 114
 115                 /** DFU class command request to reset the current DFU status and state variables to their defaults. */
 116                 #define DFU_CLRSTATUS            0x04
 117
 118                 /** DFU class command request to get the current DFU state of the bootloader. */
 119                 #define DFU_GETSTATE             0x05
 120
 121                 /** DFU class command request to abort the current multi-request transfer and return to the dfuIDLE state. */
 122                 #define DFU_ABORT                0x06
 123
 124                 /** DFU command to begin programming the device's memory. */
 125                 #define COMMAND_PROG_START       0x01
 126
 127                 /** DFU command to begin reading the device's memory. */
 128                 #define COMMAND_DISP_DATA        0x03
 129
 130                 /** DFU command to issue a write command. */
 131                 #define COMMAND_WRITE            0x04
 132
 133                 /** DFU command to issue a read command. */
 134                 #define COMMAND_READ             0x05
 135
 136                 /** DFU command to issue a memory base address change command, to set the current 64KB flash page
 137                  *  that subsequent flash operations should use. */
 138                 #define COMMAND_CHANGE_BASE_ADDR 0x06
 139
 140         /* Type Defines: */
 141                 /** Type define for a non-returning function pointer to the loaded application. */
 142                 typedef void (*AppPtr_t)(void) ATTR_NO_RETURN;
 143
 144                 /** Type define for a structure containing a complete DFU command issued by the host. */
 145                 typedef struct
 146                 {
 147                         uint8_t  Command; /**< Single byte command to perform, one of the COMMAND_* macro values */
 148                         uint8_t  Data[5]; /**< Command parameters */
 149                         uint16_t DataSize; /**< Size of the command parameters */
 150                 } DFU_Command_t;
 151
 152         /* Enums: */
 153                 /** DFU bootloader states. Refer to the DFU class specification for information on each state. */
 154                 enum DFU_State_t
 155                 {
 156                         appIDLE                      = 0,
 157                         appDETACH                    = 1,
 158                         dfuIDLE                      = 2,
 159                         dfuDNLOAD_SYNC               = 3,
 160                         dfuDNBUSY                    = 4,
 161                         dfuDNLOAD_IDLE               = 5,
 162                         dfuMANIFEST_SYNC             = 6,
 163                         dfuMANIFEST                  = 7,
 164                         dfuMANIFEST_WAIT_RESET       = 8,
 165                         dfuUPLOAD_IDLE               = 9,
 166                         dfuERROR                         = 10
 167                 };
 168
 169                 /** DFU command status error codes. Refer to the DFU class specification for information on each error code. */
 170                 enum DFU_Status_t
 171                 {
 172                         OK                           = 0,
 173                         errTARGET                    = 1,
 174                         errFILE                      = 2,
 175                         errWRITE                     = 3,
 176                         errERASE                     = 4,
 177                         errCHECK_ERASED              = 5,
 178                         errPROG                      = 6,
 179                         errVERIFY                    = 7,
 180                         errADDRESS                   = 8,
 181                         errNOTDONE                   = 9,
 182                         errFIRMWARE                  = 10,
 183                         errVENDOR                    = 11,
 184                         errUSBR                      = 12,
 185                         errPOR                       = 13,
 186                         errUNKNOWN                   = 14,
 187                         errSTALLEDPKT                = 15
 188                 };
 189
 190         /* Function Prototypes: */
 191                 void SetupHardware(void);
 192                 void ResetHardware(void);
 193
 194                 void EVENT_USB_Device_UnhandledControlRequest(void);
 195
 196                 #if defined(INCLUDE_FROM_BOOTLOADER_C)
 197                         static void DiscardFillerBytes(uint8_t NumberOfBytes);
 198                         static void ProcessBootloaderCommand(void);
 199                         static void LoadStartEndAddresses(void);
 200                         static void ProcessMemProgCommand(void);
 201                         static void ProcessMemReadCommand(void);
 202                         static void ProcessWriteCommand(void);
 203                         static void ProcessReadCommand(void);
 204                 #endif
 205
 206 #endif