108 lines
3.8 KiB
Plaintext
108 lines
3.8 KiB
Plaintext
/* Template for SAMD21/SAMD51 linking. dollar-sign-curly-bracket items are replaced with strings. */
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/* Specify the memory areas */
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MEMORY
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{
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FLASH_BOOTLOADER (rx): ORIGIN = ${BOOTLOADER_START_ADDR}, LENGTH = ${BOOTLOADER_SIZE}
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FLASH_FIRMWARE (rx) : ORIGIN = ${CIRCUITPY_FIRMWARE_START_ADDR}, LENGTH = ${CIRCUITPY_FIRMWARE_SIZE}
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FLASH_FILESYSTEM (r) : ORIGIN = ${CIRCUITPY_INTERNAL_FLASH_FILESYSTEM_START_ADDR}, LENGTH = ${CIRCUITPY_INTERNAL_FLASH_FILESYSTEM_SIZE}
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FLASH_CONFIG (r) : ORIGIN = ${CIRCUITPY_INTERNAL_CONFIG_START_ADDR}, LENGTH = ${CIRCUITPY_INTERNAL_CONFIG_SIZE}
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FLASH_NVM (r) : ORIGIN = ${CIRCUITPY_INTERNAL_NVM_START_ADDR}, LENGTH = ${CIRCUITPY_INTERNAL_NVM_SIZE}
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RAM (xrw) : ORIGIN = 0x20000000, LENGTH = ${RAM_SIZE}
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}
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/* top end of the stack */
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/* stack must be double-word (8 byte) aligned */
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_estack = ORIGIN(RAM) + LENGTH(RAM) - 8;
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_bootloader_dbl_tap = ORIGIN(RAM) + LENGTH(RAM) - 4;
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/* define output sections */
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SECTIONS
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{
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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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_sfixed = .;
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KEEP(*(.vectors)) /* isr vector table */
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__property_getter_start = .;
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*(.property_getter)
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__property_getter_end = .;
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__property_getset_start = .;
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*(.property_getset)
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__property_getset_end = .;
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/* Sort text sections so that they have fewer *fill* bytes needed. */
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*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.text))) /* .text sections (code) */
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*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.text*))) /* .text* sections (code) */
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/* Don't sort rodata because it impacts codegen size. */
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*(.rodata) /* .rodata sections (constants, strings, etc.) */
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*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
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. = ALIGN(4);
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} >FLASH_FIRMWARE
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.ARM.exidx :
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{
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*(.ARM.exidx*)
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*(.gnu.linkonce.armexidx.*)
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_etext = .; /* define a global symbol at end of code */
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_sidata = .; /* start of .data section */
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} >FLASH_FIRMWARE
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/* Data accessed by the CAN peripheral must be in the first 64kB RAM */
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/* place it at the very start of RAM, before the .data section */
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/* it is zeroed by reset_port */
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.canram (NOLOAD) :
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{
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. = ALIGN(4);
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*(.canram)
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} > RAM
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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_FIRMWARE (inidata).
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It is one task of the startup to copy the initial values from FLASH_FIRMWARE to RAM. */
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.data :
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{
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. = ALIGN(4);
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_srelocate = .; /* create a global symbol at data start; used by startup code in order to initialize the .data section in RAM */
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*(.ramfunc)
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*(.ramfunc*)
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*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.data))) /* .data sections */
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*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.data*))) /* .data* sections */
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. = ALIGN(4);
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_erelocate = .; /* define a global symbol at data end; used by startup code in order to initialize the .data section in RAM */
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} >RAM AT> FLASH_FIRMWARE
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/* Uninitialized data section */
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.bss (NOLOAD) :
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{
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. = ALIGN(4);
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_sbss = .;
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_szero = .; /* define a global symbol at bss start; used by startup code */
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*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.bss)))
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*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.bss*)))
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*(COMMON)
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. = ALIGN(4);
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_ezero = .; /* define a global symbol at bss end; used by startup code */
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_ebss = .;
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} >RAM
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/* this just checks there is enough RAM for the requested stack. */
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.stack (NOLOAD) :
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{
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. = ALIGN(4);
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. = . + ${CIRCUITPY_DEFAULT_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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