embassy/examples/stm32h755cm7/memory.x

MEMORY
{
    FLASH    : ORIGIN = 0x08000000, LENGTH = 1024K /* BANK_1 */
    RAM      : ORIGIN = 0x24000000, LENGTH = 512K  /* AXIRAM */
    RAM_D3   : ORIGIN = 0x38000000, LENGTH = 64K   /* SRAM4 */
}

SECTIONS
{
    .ram_d3 :
    {
        *(.ram_d3.shared_data)
        *(.ram_d3)
    } > RAM_D3
}