memory.ld in 437 directory still uses 128K as LENGTH of SRAM section.
I don't know it's enough. But needs to be modified at least.
We are currently using the STM32F427 (this also has 256K SRAM), it is important to note that not all 256K is the same. You have 192K at 0x20000000 which is regular SRAM, then you have 64K at 0x10000000 which is Core Coupled memory. It is possible to use the 64K, but I do not think you can add them to the STACK/HEAP.
We use the 64K as a cache, but this is managed outside the STACK/HEAP.
Is it critical for you to be able to use the 64K?
Hi renejos and dmiya,
Modification on *.ld of STM32F437 is working now for accessing the 192K SRAM.
CCM 64K is not yet my urgency to use it.