216 lines
7.7 KiB
C
216 lines
7.7 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2017.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Header file for BootloaderDFU.c.
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*/
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#ifndef _BOOTLOADER_H_
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#define _BOOTLOADER_H_
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/* Includes: */
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#include <avr/io.h>
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#include <avr/wdt.h>
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#include <avr/boot.h>
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#include <avr/pgmspace.h>
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#include <avr/eeprom.h>
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#include <avr/power.h>
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#include <avr/interrupt.h>
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#include <util/delay.h>
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#include <stdbool.h>
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#include "Descriptors.h"
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#include "BootloaderAPI.h"
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#include "Config/AppConfig.h"
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#include <LUFA/Drivers/USB/USB.h>
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#include <LUFA/Drivers/Board/LEDs.h>
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#include <LUFA/Platform/Platform.h>
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/* Preprocessor Checks: */
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#if !defined(__OPTIMIZE_SIZE__)
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#error This bootloader requires that it be optimized for size, not speed, to fit into the target device. Change optimization settings and try again.
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#endif
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/* Macros: */
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/** Major bootloader version number. */
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#define BOOTLOADER_VERSION_MINOR 2
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/** Minor bootloader version number. */
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#define BOOTLOADER_VERSION_REV 0
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/** Magic bootloader key to unlock forced application start mode. */
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#define MAGIC_BOOT_KEY 0xDC42
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/** Complete bootloader version number expressed as a packed byte, constructed from the
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* two individual bootloader version macros.
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*/
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#define BOOTLOADER_VERSION ((BOOTLOADER_VERSION_MINOR << 4) | BOOTLOADER_VERSION_REV)
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/** First byte of the bootloader identification bytes, used to identify a device's bootloader. */
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#define BOOTLOADER_ID_BYTE1 0xDC
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/** Second byte of the bootloader identification bytes, used to identify a device's bootloader. */
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#define BOOTLOADER_ID_BYTE2 0xFB
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/** Convenience macro, used to determine if the issued command is the given one-byte long command.
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*
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* \param[in] dataarr Command byte array to check against
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* \param[in] cb1 First command byte to check
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*/
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#define IS_ONEBYTE_COMMAND(dataarr, cb1) (dataarr[0] == (cb1))
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/** Convenience macro, used to determine if the issued command is the given two-byte long command.
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*
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* \param[in] dataarr Command byte array to check against
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* \param[in] cb1 First command byte to check
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* \param[in] cb2 Second command byte to check
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*/
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#define IS_TWOBYTE_COMMAND(dataarr, cb1, cb2) ((dataarr[0] == (cb1)) && (dataarr[1] == (cb2)))
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/** Length of the DFU file suffix block, appended to the end of each complete memory write command.
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* The DFU file suffix is currently unused (but is designed to give extra file information, such as
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* a CRC of the complete firmware for error checking) and so is discarded.
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*/
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#define DFU_FILE_SUFFIX_SIZE 16
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/** Length of the DFU file filler block, appended to the start of each complete memory write command.
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* Filler bytes are added to the start of each complete memory write command, and must be discarded.
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*/
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#define DFU_FILLER_BYTES_SIZE 26
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/** DFU class command request to detach from the host. */
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#define DFU_REQ_DETATCH 0x00
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/** DFU class command request to send data from the host to the bootloader. */
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#define DFU_REQ_DNLOAD 0x01
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/** DFU class command request to send data from the bootloader to the host. */
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#define DFU_REQ_UPLOAD 0x02
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/** DFU class command request to get the current DFU status and state from the bootloader. */
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#define DFU_REQ_GETSTATUS 0x03
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/** DFU class command request to reset the current DFU status and state variables to their defaults. */
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#define DFU_REQ_CLRSTATUS 0x04
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/** DFU class command request to get the current DFU state of the bootloader. */
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#define DFU_REQ_GETSTATE 0x05
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/** DFU class command request to abort the current multi-request transfer and return to the dfuIDLE state. */
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#define DFU_REQ_ABORT 0x06
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/** DFU command to begin programming the device's memory. */
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#define COMMAND_PROG_START 0x01
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/** DFU command to begin reading the device's memory. */
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#define COMMAND_DISP_DATA 0x03
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/** DFU command to issue a write command. */
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#define COMMAND_WRITE 0x04
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/** DFU command to issue a read command. */
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#define COMMAND_READ 0x05
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/** DFU command to issue a memory base address change command, to set the current 64KB flash page
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* that subsequent flash operations should use. */
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#define COMMAND_CHANGE_BASE_ADDR 0x06
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/* Type Defines: */
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/** Type define for a non-returning function pointer to the loaded application. */
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typedef void (*AppPtr_t)(void) ATTR_NO_RETURN;
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/** Type define for a structure containing a complete DFU command issued by the host. */
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typedef struct
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{
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uint8_t Command; /**< Single byte command to perform, one of the \c COMMAND_* macro values */
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uint8_t Data[5]; /**< Command parameters */
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uint16_t DataSize; /**< Size of the command parameters */
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} DFU_Command_t;
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/* Enums: */
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/** DFU bootloader states. Refer to the DFU class specification for information on each state. */
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enum DFU_State_t
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{
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appIDLE = 0,
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appDETACH = 1,
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dfuIDLE = 2,
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dfuDNLOAD_SYNC = 3,
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dfuDNBUSY = 4,
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dfuDNLOAD_IDLE = 5,
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dfuMANIFEST_SYNC = 6,
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dfuMANIFEST = 7,
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dfuMANIFEST_WAIT_RESET = 8,
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dfuUPLOAD_IDLE = 9,
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dfuERROR = 10
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};
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/** DFU command status error codes. Refer to the DFU class specification for information on each error code. */
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enum DFU_Status_t
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{
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OK = 0,
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errTARGET = 1,
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errFILE = 2,
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errWRITE = 3,
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errERASE = 4,
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errCHECK_ERASED = 5,
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errPROG = 6,
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errVERIFY = 7,
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errADDRESS = 8,
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errNOTDONE = 9,
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errFIRMWARE = 10,
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errVENDOR = 11,
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errUSBR = 12,
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errPOR = 13,
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errUNKNOWN = 14,
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errSTALLEDPKT = 15
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};
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/* Function Prototypes: */
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static void SetupHardware(void);
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static void ResetHardware(void);
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void EVENT_USB_Device_ControlRequest(void);
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#if defined(INCLUDE_FROM_BOOTLOADER_C)
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static void DiscardFillerBytes(uint8_t NumberOfBytes);
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static void ProcessBootloaderCommand(void);
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static void LoadStartEndAddresses(void);
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static void ProcessMemProgCommand(void);
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static void ProcessMemReadCommand(void);
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static void ProcessWriteCommand(void);
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static void ProcessReadCommand(void);
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#endif
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void Application_Jump_Check(void) ATTR_INIT_SECTION(3);
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#endif
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