AM572x DSP1 L2 L2SRAM Definition

Howdy,

I am looking to access the DSP's L2 SRAM in my application. If my understanding is correct, the L2 memory is 288KiB allocated as such:

288 KiB Total

• 32KiB reserved as SRAM
• 128KiB allocated as cache
• 128 KiB allocated as SRAM

The cache allocation is done in my Platform.xdc file, with something like this:

metaonly module Platform inherits xdc.platform.IPlatform
{
  ...
  instance:
  ...
  /*
   *  ======== l2Mode ========
   *  Define the amount of L2 RAM used for L2 Cache.
   *
   *  Check the device documentation for valid values.
   */
  config String l2Mode = "128k";
}

There is an issue, though. When I perform the build it appears that I am only getting access to the allocated 128KiB of SRAM, as opposed to the total 160KiB. This can be seen in the .OUT file, copied below:

         name            origin    length      used     unused   attr    fill
----------------------  --------  ---------  --------  --------  ----  --------
  L2SRAM                00800000   00020000  00001a4a  0001e5b6  RW X

The length of the L2SRAM segment coincides with the 128KiB of SRAM. How do I go about increasing the size of the L2SRAM segment? As far as I can tell, it is not defined anywhere and as such am unable to change it.

Thank you in advance.