TMS320F280049C: Firmware update via SPI

I'm implementing a firmware update method for our device.

The device consists of a SOM module running Linux which talks to a F280049C via SPI bus.

The plan is to send a 'go-to-firmware-update' command to the F280049C firmware 

via the SPI bus. The firmware will then stop all other code except the SPI 

communication which runs from RAM and enter a loop where it receiver

the new Flash contents via the SPI and programs the Flash as the data

comes available and finally issue a reset.

I've tested the FlashAPI and it works for me.

I can run the SPI code from RAM and enter into a wait for data loop.

I intend to convert the firmware.out into an ASCII hex file using hex2000

and write some code for the Linux side to send that over the SPI bus.

So far this seems like plan, right?

But I now started to think, maybe I'm re-inventing the wheel.

Could I do this using the SPI boot mode ?

This would mean I haveto turn the Linux SPI master into slave,

create some sort of kernel to upload via SPI which kernel

would receive he the Flash contents and program the Flash.

Could I utilise some code from the

serial_flash_programmer the source code of which is available?

With my current approach I have the advantage that I'm

working with my known SPI traffic and protocol at both ends

all the time and I can code and test everything without

playing with the boot mode and uploading kernels etc.

All ideas or comments would be welcome.