Bootloaders/DFU/BootloaderDFU.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all 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 <avr/interrupt.h>
  47                 #include <util/delay.h>
  48                 #include <stdbool.h>
  49
  50                 #include "Descriptors.h"
  51                 #include "BootloaderAPI.h"
  52
  53                 #include <LUFA/Drivers/USB/USB.h>
  54                 #include <LUFA/Drivers/Board/LEDs.h>
  55
  56         /* Macros: */
  57                 /** Configuration define. Define this token to true to case the bootloader to reject all memory commands
  58                  *  until a memory erase has been performed. When used in conjunction with the lockbits of the AVR, this
  59                  *  can protect the AVR's firmware from being dumped from a secured AVR. When false, memory operations are
  60                  *  allowed at any time.
  61                  */
  62                 #define SECURE_MODE              false
  63
  64                 /** Major bootloader version number. */
  65                 #define BOOTLOADER_VERSION_MINOR 2
  66
  67                 /** Minor bootloader version number. */
  68                 #define BOOTLOADER_VERSION_REV   0
  69
  70                 /** Complete bootloader version number expressed as a packed byte, constructed from the
  71                  *  two individual bootloader version macros.
  72                  */
  73                 #define BOOTLOADER_VERSION       ((BOOTLOADER_VERSION_MINOR << 4) | BOOTLOADER_VERSION_REV)
  74
  75                 /** First byte of the bootloader identification bytes, used to identify a device's bootloader. */
  76                 #define BOOTLOADER_ID_BYTE1      0xDC
  77
  78                 /** Second byte of the bootloader identification bytes, used to identify a device's bootloader. */
  79                 #define BOOTLOADER_ID_BYTE2      0xFB
  80
  81                 /** Convenience macro, used to determine if the issued command is the given one-byte long command.
  82                  *
  83                  *  \param[in] dataarr  Command byte array to check against
  84                  *  \param[in] cb1      First command byte to check
  85                  */
  86                 #define IS_ONEBYTE_COMMAND(dataarr, cb1)       (dataarr[0] == (cb1))
  87
  88                 /** Convenience macro, used to determine if the issued command is the given two-byte long command.
  89                  *
  90                  *  \param[in] dataarr  Command byte array to check against
  91                  *  \param[in] cb1      First command byte to check
  92                  *  \param[in] cb2      Second command byte to check
  93                  */
  94                 #define IS_TWOBYTE_COMMAND(dataarr, cb1, cb2) ((dataarr[0] == (cb1)) && (dataarr[1] == (cb2)))
  95
  96                 /** Length of the DFU file suffix block, appended to the end of each complete memory write command.
  97                  *  The DFU file suffix is currently unused (but is designed to give extra file information, such as
  98                  *  a CRC of the complete firmware for error checking) and so is discarded.
  99                  */
 100                 #define DFU_FILE_SUFFIX_SIZE     16
 101
 102                 /** Length of the DFU file filler block, appended to the start of each complete memory write command.
 103                  *  Filler bytes are added to the start of each complete memory write command, and must be discarded.
 104                  */
 105                 #define DFU_FILLER_BYTES_SIZE    26
 106
 107                 /** DFU class command request to detach from the host. */
 108                 #define DFU_REQ_DETATCH          0x00
 109
 110                 /** DFU class command request to send data from the host to the bootloader. */
 111                 #define DFU_REQ_DNLOAD           0x01
 112
 113                 /** DFU class command request to send data from the bootloader to the host. */
 114                 #define DFU_REQ_UPLOAD           0x02
 115
 116                 /** DFU class command request to get the current DFU status and state from the bootloader. */
 117                 #define DFU_REQ_GETSTATUS        0x03
 118
 119                 /** DFU class command request to reset the current DFU status and state variables to their defaults. */
 120                 #define DFU_REQ_CLRSTATUS        0x04
 121
 122                 /** DFU class command request to get the current DFU state of the bootloader. */
 123                 #define DFU_REQ_GETSTATE         0x05
 124
 125                 /** DFU class command request to abort the current multi-request transfer and return to the dfuIDLE state. */
 126                 #define DFU_REQ_ABORT            0x06
 127
 128                 /** DFU command to begin programming the device's memory. */
 129                 #define COMMAND_PROG_START       0x01
 130
 131                 /** DFU command to begin reading the device's memory. */
 132                 #define COMMAND_DISP_DATA        0x03
 133
 134                 /** DFU command to issue a write command. */
 135                 #define COMMAND_WRITE            0x04
 136
 137                 /** DFU command to issue a read command. */
 138                 #define COMMAND_READ             0x05
 139
 140                 /** DFU command to issue a memory base address change command, to set the current 64KB flash page
 141                  *  that subsequent flash operations should use. */
 142                 #define COMMAND_CHANGE_BASE_ADDR 0x06
 143
 144         /* Type Defines: */
 145                 /** Type define for a non-returning function pointer to the loaded application. */
 146                 typedef void (*AppPtr_t)(void) ATTR_NO_RETURN;
 147
 148                 /** Type define for a structure containing a complete DFU command issued by the host. */
 149                 typedef struct
 150                 {
 151                         uint8_t  Command; /**< Single byte command to perform, one of the \c COMMAND_* macro values */
 152                         uint8_t  Data[5]; /**< Command parameters */
 153                         uint16_t DataSize; /**< Size of the command parameters */
 154                 } DFU_Command_t;
 155
 156         /* Enums: */
 157                 /** DFU bootloader states. Refer to the DFU class specification for information on each state. */
 158                 enum DFU_State_t
 159                 {
 160                         appIDLE                      = 0,
 161                         appDETACH                    = 1,
 162                         dfuIDLE                      = 2,
 163                         dfuDNLOAD_SYNC               = 3,
 164                         dfuDNBUSY                    = 4,
 165                         dfuDNLOAD_IDLE               = 5,
 166                         dfuMANIFEST_SYNC             = 6,
 167                         dfuMANIFEST                  = 7,
 168                         dfuMANIFEST_WAIT_RESET       = 8,
 169                         dfuUPLOAD_IDLE               = 9,
 170                         dfuERROR                         = 10
 171                 };
 172
 173                 /** DFU command status error codes. Refer to the DFU class specification for information on each error code. */
 174                 enum DFU_Status_t
 175                 {
 176                         OK                           = 0,
 177                         errTARGET                    = 1,
 178                         errFILE                      = 2,
 179                         errWRITE                     = 3,
 180                         errERASE                     = 4,
 181                         errCHECK_ERASED              = 5,
 182                         errPROG                      = 6,
 183                         errVERIFY                    = 7,
 184                         errADDRESS                   = 8,
 185                         errNOTDONE                   = 9,
 186                         errFIRMWARE                  = 10,
 187                         errVENDOR                    = 11,
 188                         errUSBR                      = 12,
 189                         errPOR                       = 13,
 190                         errUNKNOWN                   = 14,
 191                         errSTALLEDPKT                = 15
 192                 };
 193
 194         /* Function Prototypes: */
 195                 static void SetupHardware(void);
 196                 static void ResetHardware(void);
 197
 198                 void EVENT_USB_Device_ControlRequest(void);
 199
 200                 #if defined(INCLUDE_FROM_BOOTLOADER_C)
 201                         static void DiscardFillerBytes(uint8_t NumberOfBytes);
 202                         static void ProcessBootloaderCommand(void);
 203                         static void LoadStartEndAddresses(void);
 204                         static void ProcessMemProgCommand(void);
 205                         static void ProcessMemReadCommand(void);
 206                         static void ProcessWriteCommand(void);
 207                         static void ProcessReadCommand(void);
 208                 #endif
 209
 210 #endif
 211