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micropython/ports/nrf/boards/memory.ld

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nrf: Make linker scripts more modular. With all the variation in chips and boards it's tedious to copy and redefine linker scripts for every option. Making linker scripts more modular also opens up more possibilities, like enabling/disabling the flash file system from the Makefile - or even defining it's size from a Makefile argument (FS_SIZE=12 for a 12kB filesystem if tight on space).
2018-04-02 16:43:11 +01:00
/* Flash layout: softdevice | application | filesystem */
/* RAM layout: softdevice RAM | application RAM */
_sd_size = DEFINED(_sd_size) ? _sd_size : 0;
_sd_ram = DEFINED(_sd_ram) ? _sd_ram : 0;
_fs_size = DEFINED(_fs_size) ? _fs_size : 64K; /* TODO: set to 0 if not using the filesystem */
_app_size = _flash_size - _sd_size - _fs_size;
_app_start = _sd_size;
_fs_start = _sd_size + _app_size;
_fs_end = _fs_start + _fs_size;
_app_ram_start = 0x20000000 + _sd_ram;
_app_ram_size = _ram_size - _sd_ram;
nrf/boards: Check for stack/heap size using an assert. The main effect of this is that the .bss is now accurate and doesn't include the stack and minimum heap size.
2018-06-13 23:33:27 +01:00
_heap_start = _ebss;
_heap_end = _ram_end - _stack_size;
_heap_size = _heap_end - _heap_start;
ASSERT(_heap_size >= _minimum_heap_size, "not enough RAM left for heap")
nrf: Make linker scripts more modular. With all the variation in chips and boards it's tedious to copy and redefine linker scripts for every option. Making linker scripts more modular also opens up more possibilities, like enabling/disabling the flash file system from the Makefile - or even defining it's size from a Makefile argument (FS_SIZE=12 for a 12kB filesystem if tight on space).
2018-04-02 16:43:11 +01:00
/* Specify the memory areas */
MEMORY
{
FLASH_TEXT (rx) : ORIGIN = _app_start, LENGTH = _app_size /* app */
RAM (xrw) : ORIGIN = _app_ram_start, LENGTH = _app_ram_size
}