133 lines
4.2 KiB
Plaintext
133 lines
4.2 KiB
Plaintext
/*
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GNU linker script for STM32F401 with bootloader (from Meowbit Micropython)
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Doesn't work:
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Traceback (most recent call last):
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File "../../tools/build_memory_info.py", line 64, in <module>
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regions[region] = int(eval(space))
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File "<string>", line 1, in <module>
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NameError: name 'FLASH_ISR' is not defined
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*/
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/* Specify the memory areas */
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/* FLASH_FS (rx) : ORIGIN = 0x08020000, LENGTH = 128K */
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/* sectors 5 128K */
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MEMORY
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{
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FLASH (rx) : ORIGIN = 0x08010000, LENGTH = 512K - 64K /* entire flash */
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FLASH_ISR (rx) : ORIGIN = 0x08010000, LENGTH = 64K /* sector 4, sec 0~3 reserved for booloader */
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FLASH_TEXT (rx) : ORIGIN = 0x08020000, LENGTH = 384K /* sectors 5, 6,7 are 128K */
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RAM (xrw) : ORIGIN = 0x20000194, LENGTH = 96K - 0x194
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}
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/* produce a link error if there is not this amount of RAM for these sections */
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_minimum_stack_size = 2K;
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_minimum_heap_size = 16K;
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/* Define the stack. The stack is full descending so begins just above last byte
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of RAM. Note that EABI requires the stack to be 8-byte aligned for a call. */
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_estack = ORIGIN(RAM) + LENGTH(RAM) - _estack_reserve;
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_sstack = _estack - 16K; /* tunable */
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/* RAM extents for the garbage collector */
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_ram_start = ORIGIN(RAM);
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_ram_end = ORIGIN(RAM) + LENGTH(RAM);
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_heap_start = _ebss; /* heap starts just after statically allocated memory */
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_heap_end = _sstack;
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ENTRY(Reset_Handler)
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/* define output sections */
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SECTIONS
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{
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/* The startup code goes first into FLASH */
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.isr_vector :
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{
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. = ALIGN(4);
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KEEP(*(.isr_vector)) /* Startup code */
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/* This first flash block is 16K annd the isr vectors only take up
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about 400 bytes. So we pull in a couple of object files to pad it
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out. */
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. = ALIGN(4);
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/* NOTE: If you update the list of files contained in .isr_vector,
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then be sure to also update smhal/Makefile where it forcibly
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builds each of these files with -Os */
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*/ff.o(.text*)
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*/vfs_fat_*.o(.text*)
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*/py/formatfloat.o(.text*)
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*/py/parsenum.o(.text*)
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*/py/mpprint.o(.text*)
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*/py/compile.o(.text*)
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*/py/objset.o(.text*)
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*/py/mpz.o(.text*)
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*/py/vm.o(.text*)
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. = ALIGN(4);
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} >FLASH_ISR
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/* The program code and other data goes into FLASH */
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.text :
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{
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. = ALIGN(4);
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*(.text*) /* .text* sections (code) */
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*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
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/* *(.glue_7) */ /* glue arm to thumb code */
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/* *(.glue_7t) */ /* glue thumb to arm code */
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. = ALIGN(4);
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_etext = .; /* define a global symbol at end of code */
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} >FLASH_TEXT
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/* used by the startup to initialize data */
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_sidata = LOADADDR(.data);
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/* This is the initialized data section
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The program executes knowing that the data is in the RAM
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but the loader puts the initial values in the FLASH (inidata).
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It is one task of the startup to copy the initial values from FLASH to RAM. */
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.data :
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{
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. = ALIGN(4);
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_sdata = .; /* create a global symbol at data start; used by startup code in order to initialise the .data section in RAM */
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*(.data*) /* .data* sections */
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. = ALIGN(4);
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_edata = .; /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */
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} >RAM AT> FLASH_TEXT
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/* Uninitialized data section */
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.bss :
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{
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. = ALIGN(4);
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_sbss = .; /* define a global symbol at bss start; used by startup code */
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*(.bss*)
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*(COMMON)
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. = ALIGN(4);
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_ebss = .; /* define a global symbol at bss end; used by startup code and GC */
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} >RAM
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/* this is to define the start of the heap, and make sure we have a minimum size */
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.heap :
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{
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. = ALIGN(4);
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. = . + _minimum_heap_size;
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. = ALIGN(4);
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} >RAM
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/* this just checks there is enough RAM for the stack */
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.stack :
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{
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. = ALIGN(4);
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. = . + _minimum_stack_size;
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. = ALIGN(4);
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} >RAM
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.ARM.attributes 0 : { *(.ARM.attributes) }
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}
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