You have to set the correct memory layout for your device in the linker script.
Please check the FLASH and SRAM length.
e.g.
MEMORY
{
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 0x08000 /* 32k */
RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x01000 /* 4k */
}