118 lines
3.5 KiB
Plaintext
118 lines
3.5 KiB
Plaintext
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/*
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GNU linker script for STM32F405
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*/
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/* Specify the memory areas */
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MEMORY
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{
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FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 0x100000 /* entire flash, 1 MiB */
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FLASH_ISR (rx) : ORIGIN = 0x08000000, LENGTH = 0x004000 /* sector 0, 16 KiB */
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FLASH_TEXT (rx) : ORIGIN = 0x08020000, LENGTH = 0x080000 /* sectors 5,6,7,8, 4*128KiB = 512 KiB (could increase it more) */
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CCMRAM (xrw) : ORIGIN = 0x10000000, LENGTH = 0x010000 /* 64 KiB */
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RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 0x020000 /* 128 KiB */
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}
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/* top end of the stack */
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_estack = ORIGIN(RAM) + LENGTH(RAM);
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/* RAM extents for the garbage collector */
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_ram_end = ORIGIN(RAM) + LENGTH(RAM);
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_heap_end = 0x2001c000; /* tunable */
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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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. = 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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*(.text*) /* .text* sections (code) */
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*(.rodata) /* .rodata sections (constants, strings, etc.) */
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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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_sidata = _etext; /* This is used by the startup in order to initialize the .data secion */
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} >FLASH_TEXT
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/*
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.ARM.extab :
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{
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*(.ARM.extab* .gnu.linkonce.armextab.*)
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} >FLASH
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.ARM :
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{
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__exidx_start = .;
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*(.ARM.exidx*)
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__exidx_end = .;
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} >FLASH
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*/
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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 : AT ( _sidata )
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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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_ram_start = .; /* create a global symbol at ram start for garbage collector */
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*(.data) /* .data sections */
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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
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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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*(.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 */
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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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_heap_start = .; /* define a global symbol at heap start */
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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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} >RAM
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/* Remove information from the standard libraries */
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/*
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/DISCARD/ :
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{
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libc.a ( * )
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libm.a ( * )
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libgcc.a ( * )
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}
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*/
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.ARM.attributes 0 : { *(.ARM.attributes) }
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}
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