MSP430F5418A: Custom bootloader + application for msp430f5418a

Hi to everybody,

there are a plenty of informations on how to implement a custom bootloader for msp430 microcontroller, maybe too much for me...

I understand that:

1) bootloader interrupt vector must stay on 0xFF80-0xFFFF. Bootloader code start at 0x5C00.

2) application interrupt vector have to be relocate to a different address, lets say 0xFF00-0xFF7F. Application interrupt vector table can move to ram at startup by the bootloader or by the application. Application code start ad 0xA100.

Now, besides interrupt part, I simplified bootloader and application without using any ISRs.

So my bootloader start at the reset address 0xFFFE, turn on a led, wait 1 second and then jump to the application that turn off that led and turn on another led. The problem is that I'm not able to jump to the application code.

Have I to jump to application reset vector address 0xFF7E? Or have I to jump to main 0xA100? I think the first one.

The instruction that I use to jump is ((void(*)())0xFF7E)();

Bootloader is implemented using CCS 6.0

On application side where I use gcc I implement a custom linker file memory.x where

MEMORY {
  sfr              : ORIGIN = 0x0000, LENGTH = 0x0010 /* END=0x0010, size 16 */
  peripheral_8bit  : ORIGIN = 0x0010, LENGTH = 0x00f0 /* END=0x0100, size 240 */
  peripheral_16bit : ORIGIN = 0x0100, LENGTH = 0x0100 /* END=0x0200, size 256 */
  bsl              : ORIGIN = 0x1000, LENGTH = 0x0800 /* END=0x1800, size 2K as 4 512-byte segments */
  infomem          : ORIGIN = 0x1800, LENGTH = 0x0200 /* END=0x1a00, size 512 as 4 128-byte segments */
  infod            : ORIGIN = 0x1800, LENGTH = 0x0080 /* END=0x1880, size 128 */
  infoc            : ORIGIN = 0x1880, LENGTH = 0x0080 /* END=0x1900, size 128 */
  infob            : ORIGIN = 0x1900, LENGTH = 0x0080 /* END=0x1980, size 128 */
  infoa            : ORIGIN = 0x1980, LENGTH = 0x0080 /* END=0x1a00, size 128 */
  ram (wx)         : ORIGIN = 0x1c00, LENGTH = 0x3f80 /* END=0x5b80, size 16K-128byte */
  rom (rx)         : ORIGIN = 0xa100, LENGTH = 0x4e80 /* END=0xff80, size 24192 */
  //rom (rx)         : ORIGIN = 0x5c00, LENGTH = 0xff80 /* END=0xff80, size 41856 */
  //vectors          : ORIGIN = 0xff80, LENGTH = 0x0080 /* END=0x10000, size 128 as 64 2-byte segments */
  far_rom          : ORIGIN = 0x00010000, LENGTH = 0x00015c00 /* END=0x00025c00, size 87K */
  /* Remaining banks are absent */
  ram2 (wx)        : ORIGIN = 0x0000, LENGTH = 0x0000
  ram_mirror (wx)  : ORIGIN = 0x0000, LENGTH = 0x0000
  usbram (wx)      : ORIGIN = 0x0000, LENGTH = 0x0000
  /* Interrupt Proxy table from  _App_Proxy_Vector_Start */
  vectors          : ORIGIN = 0xFF00, LENGTH = 0x0080
}

I think that there is something missing when I call application reset vector, some code that I have to implement on application side in order to jump correctly to main but I don't know what I have to do.

Thanks in advance if someone can help me

Regards