Bootloaders/DFU/BootloaderAPITable.S

   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 ;  Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  10 ;
  11 ;  Permission to use, copy, modify, distribute, and sell this
  12 ;  software and its documentation for any purpose is hereby granted
  13 ;  without fee, provided that the above copyright notice appear in
  14 ;  all copies and that both that the copyright notice and this
  15 ;  permission notice and warranty disclaimer appear in supporting
  16 ;  documentation, and that the name of the author not be used in
  17 ;  advertising or publicity pertaining to distribution of the
  18 ;  software without specific, written prior permission.
  19 ;
  20 ;  The author disclaim all warranties with regard to this
  21 ;  software, including all implied warranties of merchantability
  22 ;  and fitness.  In no event shall the author be liable for any
  23 ;  special, indirect or consequential damages or any damages
  24 ;  whatsoever resulting from loss of use, data or profits, whether
  25 ;  in an action of contract, negligence or other tortious action,
  26 ;  arising out of or in connection with the use or performance of
  27 ;  this software.
  28
  29
  30
  31 ; Trampolines to actual API implementations if the target address is outside the
  32 ; range of a rjmp instruction (can happen with large bootloader sections)
  33 .section .apitable_trampolines, "ax"
  34 .global BootloaderAPI_Trampolines
  35 BootloaderAPI_Trampolines:
  36
  37         BootloaderAPI_ErasePage_Trampoline:
  38                 jmp BootloaderAPI_ErasePage
  39         BootloaderAPI_WritePage_Trampoline:
  40                 jmp BootloaderAPI_WritePage
  41         BootloaderAPI_FillWord_Trampoline:
  42                 jmp BootloaderAPI_FillWord
  43         BootloaderAPI_ReadSignature_Trampoline:
  44                 jmp BootloaderAPI_ReadSignature
  45         BootloaderAPI_ReadFuse_Trampoline:
  46                 jmp BootloaderAPI_ReadFuse
  47         BootloaderAPI_ReadLock_Trampoline:
  48                 jmp BootloaderAPI_ReadLock
  49         BootloaderAPI_WriteLock_Trampoline:
  50                 jmp BootloaderAPI_WriteLock
  51         BootloaderAPU_UNUSED1:
  52                 ret
  53         BootloaderAPU_UNUSED2:
  54                 ret
  55         BootloaderAPU_UNUSED3:
  56                 ret
  57         BootloaderAPU_UNUSED4:
  58                 ret
  59         BootloaderAPU_UNUSED5:
  60                 ret
  61
  62
  63
  64 ; API function jump table
  65 .section .apitable_jumptable, "ax"
  66 .global BootloaderAPI_JumpTable
  67 BootloaderAPI_JumpTable:
  68
  69         rjmp BootloaderAPI_ErasePage_Trampoline
  70         rjmp BootloaderAPI_WritePage_Trampoline
  71         rjmp BootloaderAPI_FillWord_Trampoline
  72         rjmp BootloaderAPI_ReadSignature_Trampoline
  73         rjmp BootloaderAPI_ReadFuse_Trampoline
  74         rjmp BootloaderAPI_ReadLock_Trampoline
  75         rjmp BootloaderAPI_WriteLock_Trampoline
  76         rjmp BootloaderAPU_UNUSED1 ; UNUSED ENTRY 1
  77         rjmp BootloaderAPU_UNUSED2 ; UNUSED ENTRY 2
  78         rjmp BootloaderAPU_UNUSED3 ; UNUSED ENTRY 3
  79         rjmp BootloaderAPU_UNUSED4 ; UNUSED ENTRY 4
  80         rjmp BootloaderAPU_UNUSED5 ; UNUSED ENTRY 5
  81
  82
  83
  84 ; Bootloader table signatures and information
  85 .section .apitable_signatures, "ax"
  86 .global BootloaderAPI_Signatures
  87 BootloaderAPI_Signatures:
  88
  89         .long BOOT_START_ADDR ; Start address of the bootloader
  90         .word 0xDFB1 ; Signature for the DFU class bootloader, V1
  91         .word 0xDCFB ; Signature for a LUFA class bootloader