added custom ld file for samd51 no crystal, ext flash

This commit is contained in:
wallarug 2019-07-27 16:29:30 +10:00
parent eda3423e35
commit 36008de2ed
1 changed files with 84 additions and 0 deletions

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/*
GNU linker script for SAMD51x19 (512K flash, 192K RAM)
*/
/* Specify the memory areas */
MEMORY
{
/* Leave 16KiB for the bootloader. 8K for user data and 256b for user config.*/
FLASH (rx) : ORIGIN = 0x00000000 + 16K, LENGTH = 512K - 16K - 8K - 256
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 192K
}
/* top end of the stack */
/* stack must be double-word (8 byte) aligned */
_estack = ORIGIN(RAM) + LENGTH(RAM) - 8;
_bootloader_dbl_tap = ORIGIN(RAM) + LENGTH(RAM) - 4;
/* define output sections */
SECTIONS
{
/* The program code and other data goes into FLASH */
.text :
{
. = ALIGN(4);
_sfixed = .;
KEEP(*(.vectors)) /* isr vector table */
*(.text) /* .text sections (code) */
*(.text*) /* .text* sections (code) */
*(.rodata) /* .rodata sections (constants, strings, etc.) */
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
. = ALIGN(4);
} >FLASH
.ARM.exidx :
{
*(.ARM.exidx*)
*(.gnu.linkonce.armexidx.*)
_etext = .; /* define a global symbol at end of code */
_sidata = .; /* start of .data section */
} > FLASH
/* This is the initialized data section
The program executes knowing that the data is in the RAM
but the loader puts the initial values in the FLASH (inidata).
It is one task of the startup to copy the initial values from FLASH to RAM. */
.data : AT ( _sidata )
{
. = ALIGN(4);
_srelocate = .; /* create a global symbol at data start; used by startup code in order to initialise the .data section in RAM */
*(.ramfunc)
*(.ramfunc*)
*(.data) /* .data sections */
*(.data*) /* .data* sections */
. = ALIGN(4);
_erelocate = .; /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */
} >RAM
/* Uninitialized data section */
.bss :
{
. = ALIGN(4);
_sbss = .;
_szero = .; /* define a global symbol at bss start; used by startup code */
*(.bss)
*(.bss*)
*(COMMON)
. = ALIGN(4);
_ezero = .; /* define a global symbol at bss end; used by startup code */
_ebss = .;
} >RAM
/* this just checks there is enough RAM for a minimal stack */
.stack :
{
. = ALIGN(4);
. = . + 10K; /* Reserve a minimum of 10K for the stack. nvm will temporarily store 8k on the stack when writing. */
. = ALIGN(4);
} >RAM
.ARM.attributes 0 : { *(.ARM.attributes) }
}