Minor documentation improvements.

[pub/USBasp.git] / Bootloaders / CDC / BootloaderAPITable.S

diff --git a/Bootloaders/CDC/BootloaderAPITable.S b/Bootloaders/CDC/BootloaderAPITable.S
index 7f015f2..fc1e2e9 100644 (file)
--- a/Bootloaders/CDC/BootloaderAPITable.S
+++ b/Bootloaders/CDC/BootloaderAPITable.S
@@ -30,14 +30,48 @@
 
 ; Bootloader API Jump Table
 .section .apitable, "ax"
-.org 0
 
-.global BootloaderAPI_JumpTable
-BootloaderAPI_JumpTable:
+; Trampolines to actual API implementations if the target address is outside the
+; range of a rjmp instruction (can happen with large bootloader sections)
+.org 0
+BootloaderAPI_ErasePage_Trampoline:
        jmp BootloaderAPI_ErasePage
+BootloaderAPI_WritePage_Trampoline:
        jmp BootloaderAPI_WritePage
+BootloaderAPI_FillWord_Trampoline:
        jmp BootloaderAPI_FillWord
+BootloaderAPI_ReadSignature_Trampoline:
        jmp BootloaderAPI_ReadSignature
+BootloaderAPI_ReadFuse_Trampoline:
        jmp BootloaderAPI_ReadFuse
+BootloaderAPI_ReadLock_Trampoline:
        jmp BootloaderAPI_ReadLock
+BootloaderAPI_WriteLock_Trampoline:
        jmp BootloaderAPI_WriteLock
+BootloaderAPU_UNUSED:
+       ret
+
+; API function jump table
+.org (96 - 32)
+.global BootloaderAPI_JumpTable
+BootloaderAPI_JumpTable:
+       rjmp BootloaderAPI_ErasePage_Trampoline
+       rjmp BootloaderAPI_WritePage_Trampoline
+       rjmp BootloaderAPI_FillWord_Trampoline
+       rjmp BootloaderAPI_ReadSignature_Trampoline
+       rjmp BootloaderAPI_ReadFuse_Trampoline
+       rjmp BootloaderAPI_ReadLock_Trampoline
+       rjmp BootloaderAPI_WriteLock_Trampoline
+       rjmp BootloaderAPU_UNUSED ; UNUSED ENTRY
+       rjmp BootloaderAPU_UNUSED ; UNUSED ENTRY
+       rjmp BootloaderAPU_UNUSED ; UNUSED ENTRY
+       rjmp BootloaderAPU_UNUSED ; UNUSED ENTRY
+       rjmp BootloaderAPU_UNUSED ; UNUSED ENTRY
+
+; Bootloader table signatures and information
+.org (96 - 8)
+BootloaderAPI_Signatures:
+.global BootloaderAPI_Signatures
+       .long BOOT_START_ADDR ; Start address of the bootloader
+       .word 0xCDC1 ; Signature for the CDC class bootloader, V1
+       .word 0xDCFB ; Signature for a LUFA class bootloader