H563zi Trustzone dual bank Flash user

[Anderson Santos]

Hello everyone,

I'm testing the use of trustzones in my application. The examples are working fine, however my application requires more FLASH in the non-secure zone than in the secure zone. The initial examples have the following parameters (default):

The memory definition in the secure linker script is as follows:

/* Memories definition - Secure Zone  */
MEMORY
{
  RAM    (xrw)    : ORIGIN = 0x30000000,   LENGTH = 320K
  FLASH    (rx)    : ORIGIN = 0x0C000000,   LENGTH = 1016K
  FLASH_NSC    (rx)    : ORIGIN = 0x0C0FE000,   LENGTH = 8K
}

The memory definition in the non-secure linker script is as follows:

/* Memories definition - Non-Secure Zone */
MEMORY
{
  RAM    (xrw)    : ORIGIN = 0x20050000,   LENGTH = 320K
  FLASH    (rx)    : ORIGIN = 0x08100000,   LENGTH = 1024K
}

The Option bytes is as follows:

So far it works. My application requires me to use 80K of memory in the secure zone and 1968K of memory in the non-secure zone, as I will show below:

The memory definition in the secure linker script is as follows:

/* Memories definition - Secure Zone  */
MEMORY
{
  RAM    (xrw)    : ORIGIN = 0x30000000,   LENGTH = 320K
  FLASH    (rx)    : ORIGIN = 0x0C000000,   LENGTH = 72K
  FLASH_NSC    (rx)    : ORIGIN = 0x0C012000,   LENGTH = 8K
}

The memory definition in the non-secure linker script is as follows:

/* Memories definition - Non-Secure Zone */
MEMORY
{
  RAM    (xrw)    : ORIGIN = 0x20050000,   LENGTH = 320K
  FLASH    (rx)    : ORIGIN = 0x08014000,   LENGTH = 1968K
}

The Option bytes is as follows:

 

And when I try to run the application I get this error:

I'd like to know where I'm going wrong, and also ask a question: if I define the range of safe and unsafe FLASH in option bytes, would it be necessary to modify the linker?