Meaning
Linker configuration files specifying address space mappings dictate precise physical memory placement for embedded software sections. Writing memory layout scripts defines where executable code, read-only data, static variables, and stack boundaries reside inside micro-controller flash and RAM blocks. Precision mapping ensures interrupt vector tables align with silicon hardware boot addresses while preventing stack collisions during runtime execution.
Boundaries apply specifically to the compilation link phase where object files merge into final binary images.
Linker Control
Output sections produced by cross-compilers must match physical hardware memory boundaries to prevent software execution faults on target silicon. When memory layout scripts assign code sections to flash regions, memory offset addresses dictate execution vectors during system startup. Misconfigured origin addresses lead to immediate bus faults when the core processor attempts to fetch boot code.
Dynamic memory regions such as heaps and stacks require explicit boundary declarations to guarantee memory protection unit enforcement. Embedded firmware developers structure these scripts to segment bootloader code from primary application binaries. Hardware security features rely on layout directives to isolate cryptographic key storage sectors from general execution space.
Firmware Partitioning
Partition maps defined in linker directives reserve dedicated memory sectors for over-the-air update firmware images. Flash page boundaries align with update block sizes to allow clean erase cycles during background firmware flashing operations.
Verification Gate
Build pipeline automation inspects memory section allocation reports generated by the linker against chip memory capacity constraints. Automated checks block release builds if flash or RAM usage exceeds defined safety margins.
