Julian Appel
3986d2effe
flash_with_bootloader.ld's rom region ended 512 bytes short of the NVM region it's meant to butt up against (0x1F900 instead of 0x1FB00), leaving a small gap neither region could use. Corrected the LENGTH and the matching maximum_size in boards/versapad.json (128K - 8K bootloader - 1.25K NVM = 121600 bytes, not 120832). Found while double-checking the numbers for a flash-usage breakdown; current 19KB app image is nowhere near either boundary, so this never affected anything on hardware. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
101 lines
2.2 KiB
Text
101 lines
2.2 KiB
Text
/* Linker script for ATSAMD21G17D – with 8KB bootloader (flash starts at 0x2000) */
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OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
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OUTPUT_ARCH(arm)
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SEARCH_DIR(.)
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MEMORY
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{
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rom (rx) : ORIGIN = 0x00002000, LENGTH = 0x0001DB00 /* 118.75K – Firmware (128K - 8K bootloader - 1.25K NVM) */
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nvm (rx) : ORIGIN = 0x0001FB00, LENGTH = 0x00000500 /* 1.25K – Makros + Config, same layout as flash_without_bootloader.ld */
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ram (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00004000 /* 16K */
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}
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__StackTop = ORIGIN(ram) + LENGTH(ram);
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__StackLimit = __StackTop - 0x1000;
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SECTIONS
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{
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.text :
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{
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__text_start__ = .;
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. = ALIGN(4);
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KEEP(*(.isr_vector))
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KEEP(*(.vectors .vectors.*))
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*(.text .text.* .gnu.linkonce.t.*)
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*(.glue_7t) *(.glue_7)
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*(.rodata .rodata* .gnu.linkonce.r.*)
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*(.ARM.extab* .gnu.linkonce.armextab.*)
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. = ALIGN(4);
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KEEP(*(.init))
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__preinit_array_start = .;
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KEEP(*(.preinit_array))
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__preinit_array_end = .;
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__init_array_start = .;
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KEEP(*(SORT(.init_array.*)))
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KEEP(*(.init_array))
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__init_array_end = .;
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KEEP(*crtbegin.o(.ctors))
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KEEP(*(EXCLUDE_FILE(*crtend.o) .ctors))
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KEEP(*(SORT(.ctors.*)))
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KEEP(*crtend.o(.ctors))
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. = ALIGN(4);
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KEEP(*(.fini))
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__fini_array_start = .;
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KEEP(*(.fini_array))
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KEEP(*(SORT(.fini_array.*)))
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__fini_array_end = .;
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KEEP(*crtbegin.o(.dtors))
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KEEP(*(EXCLUDE_FILE(*crtend.o) .dtors))
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KEEP(*(SORT(.dtors.*)))
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KEEP(*crtend.o(.dtors))
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. = ALIGN(4);
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} > rom
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PROVIDE_HIDDEN(__exidx_start = .);
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.ARM.exidx :
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{
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*(.ARM.exidx* .gnu.linkonce.armexidx.*)
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} > rom
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PROVIDE_HIDDEN(__exidx_end = .);
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. = ALIGN(4);
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__etext = .;
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_etext = .;
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.data : AT(__etext)
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{
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. = ALIGN(4);
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__data_start__ = .;
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_srelocate = .;
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*(.ramfunc .ramfunc.*);
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*(.data .data.*);
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. = ALIGN(4);
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__data_end__ = .;
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_erelocate = .;
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} > ram
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.bss (NOLOAD) :
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{
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. = ALIGN(4);
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__bss_start__ = .;
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_sbss = .;
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_szero = .;
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*(.bss .bss.*)
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*(COMMON)
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. = ALIGN(4);
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__bss_end__ = .;
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_ebss = .;
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_ezero = .;
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} > ram
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. = ALIGN(4);
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end = .;
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_end = .;
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}
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