Content originally posted in LPCWare by bavarian on Mon Jan 13 01:21:32 MST 2014
Simply tell the linker that this is an available memory for allocation.
In case you want to partition the available memory in the system do different jobs, e.g. parameters in internal SRAM and buffers in external SDRAM, then you need to use specific keywords when you declare the buffers, so that the linker knows that you want to have them in a specific memory section. This heavily depends on the toolchain you use (Keil, IAR, GCC).
NXP Support Team