Bootloaders/CDC/BootloaderAPITable.S

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2011.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  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 ; Bootloader API Jump Table
  32 .section .apitable, "ax"
  33
  34 ; Trampolines to actual API implementations if the target address is outside the
  35 ; range of a rjmp instruction (can happen with large bootloader sections)
  36 .org 0
  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 ; API function jump table
  63 .org (96 - 32)
  64 .global BootloaderAPI_JumpTable
  65 BootloaderAPI_JumpTable:
  66         rjmp BootloaderAPI_ErasePage_Trampoline
  67         rjmp BootloaderAPI_WritePage_Trampoline
  68         rjmp BootloaderAPI_FillWord_Trampoline
  69         rjmp BootloaderAPI_ReadSignature_Trampoline
  70         rjmp BootloaderAPI_ReadFuse_Trampoline
  71         rjmp BootloaderAPI_ReadLock_Trampoline
  72         rjmp BootloaderAPI_WriteLock_Trampoline
  73         rjmp BootloaderAPU_UNUSED1 ; UNUSED ENTRY 1
  74         rjmp BootloaderAPU_UNUSED2 ; UNUSED ENTRY 2
  75         rjmp BootloaderAPU_UNUSED3 ; UNUSED ENTRY 3
  76         rjmp BootloaderAPU_UNUSED4 ; UNUSED ENTRY 4
  77         rjmp BootloaderAPU_UNUSED5 ; UNUSED ENTRY 5
  78
  79 ; Bootloader table signatures and information
  80 .org (96 - 8)
  81 BootloaderAPI_Signatures:
  82 .global BootloaderAPI_Signatures
  83         .long BOOT_START_ADDR ; Start address of the bootloader
  84         .word 0xCDC1 ; Signature for the CDC class bootloader, V1
  85         .word 0xDCFB ; Signature for a LUFA class bootloader