Linker script puts bss into flash - why?

When I'm done compiling, the memory details show

"FLASH";"0x08000000";"";"64 KB"
".ITCMSection";"0x00000000";"0x080002a0";"1.36 KB"
".isr_vector";"0x08000000";"0x08000000";"672 B"
".text";"0x08000810";"0x08000810";"29.19 KB"
".rodata";"0x08007cd0";"0x08007cd0";"84 B"
".ARM";"0x08007d24";"0x08007d24";"8 B"
".init_array";"0x08007d2c";"0x08007d2c";"4 B"
".fini_array";"0x08007d30";"0x08007d30";"4 B"
".data";"0x20000000";"0x08007d34";"144 B"
".bss";"0x20000090";"0x08007dc4";"868 B"
"RW_NONCACHEABLE";"0x200003f4";"0x08007dc4";"36 B"
"._user_heap_stack";"0x20000418";"0x08007dc4";"190.98 KB"

All sections from .bss on should NOT be in FLASH. The linker script has

 /* Used by the startup to initialize data */
 _sidata = LOADADDR(.data);

 /* Initialized data sections into "RAM" Ram type memory */
 .data :
 {
 . = ALIGN(4);
 _sdata = .; /* create a global symbol at data start */
 *(.data) /* .data sections */
 *(.data*) /* .data* sections */
 *(.RamFunc) /* .RamFunc sections */
 *(.RamFunc*) /* .RamFunc* sections */

 . = ALIGN(4);
 _edata = .; /* define a global symbol at data end */

 } >DTCM AT> FLASH

 /* Uninitialized data section into "RAM" Ram type memory */
 . = ALIGN(4);
 .bss (NOLOAD):
 {
 /* This is used by the startup in order to initialize the .bss section */
 _sbss = .; /* define a global symbol at bss start */
 __bss_start__ = _sbss;
 *(.bss)
 *(.bss*)
 *(COMMON)

 . = ALIGN(4);
 _ebss = . + 0x100; /* define a global symbol at bss end */
/* __bss_end__ = _ebss; */
 } > DTCM

 RW_NONCACHEABLE (NOLOAD):
 {
 __NONCACHEABLEBUFFER_BEGIN = .;/* create symbol for start of section */
 KEEP(*(noncacheable_buffer))
 __NONCACHEABLEBUFFER_END = .; /* create symbol for start of section */
/* } > RAM_NONCACHEABLEBUFFER*/
 } > DTCM

 */
 /* User_heap_stack section, used to check that there is enough Ram type memory left */
 ._user_heap_stack (NOLOAD):
 {
 . = ALIGN(8);
 PROVIDE ( end = . );
 PROVIDE ( _end = . );
/* . = . + _Min_Heap_Size;
 . = . + _Min_Stack_Size; */
 . = ABSOLUTE(_estack);
 . = ALIGN(8);
 } > DTCM

The fixed data should go into flash, but the rest of it should not. Why is the linker adding those sections to flash?