I've been reading the datasheet for the SAM3X chip used on the Arduino DUE to explore and learn more about the static memory controller.
The reason i want to learn this is because I'm looking to built a small application that can load complied .BIN sketches from an SD card into a NOR Flash then execute from the NOR flash, once finished jump back to the code in the internal memory.
The chip has external memory mapping
0x60000000-0x60FFFFFF Chip Select 0 (16 MB) Read-write
0x61000000-0x61FFFFFF Chip Select 1 Read-write
0x62000000-0x62FFFFFF Chip Select 2 Read-write
0x63000000-0x63FFFFFF Chip Select 3 Read-write
once the config bits are set to tell the SMC that their is a device on Chip Select 0 (Bank 0), is it the same as just the standard C malloc to write directly to this memory address from the SD card the use:
void (*appcode)(void) = 0x60000000;
to jump and execute the code on the NOR Flash