Here is the text in sprabb1c.pdf: "Using the TMS320C6747/45/43 Bootloader":
With a total of 15 address lines (EMA_A[12:0] and EMA_BA[1:0]) of EMIFA, only 32 KB of NOR Flash can
be accessed by the bootloader. If boot image is longer than this, a secondary bootloader is required that
can access more data from NOR Flash by managing higher address lines of NOR Flash using generalpurpose
input/output (GPIO) pins or some other mechanism.
So it seems that I need to create two AIS files, one for the secondary bootloader, one for my application. The bootloader in ROM load the secondary bootloader and run it. The secondary bootloader needs to read the AIS bytes of my application in flash memory with GPIO pins and do the samething as the bootloader in ROM.
It's difficult to implement all the detail of AIS command, I want to know are there any library for this, that I can just define the GPIO pins, and the let the library to deal with AIS format?