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core: Add keymap section ldscript for ATMega32U2
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,268 @@ | ||
/* | ||
* linker script for configurable keymap | ||
* | ||
* This adds keymap section which places keymap at fixed address and | ||
* is based on binutils-avr ldscripts(/usr/lib/ldscripts/avr5.x). | ||
*/ | ||
OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr") | ||
OUTPUT_ARCH(avr:35) | ||
MEMORY | ||
{ | ||
/* With keymap section | ||
* | ||
* Flash Map of ATMega32U4(32KB) | ||
* +------------+ 0x0000 | ||
* | .vectors | | ||
* | .progmem | | ||
* | .init0-9 | > text region | ||
* | .text | | ||
* | .fini9-0 | | ||
* | | | ||
* |------------| _etext | ||
* | .data | | ||
* | .bss | > data region | ||
* | .noinit | | ||
* | | | ||
* |------------| 0x6800 | ||
* | .keymap | > keymap region(2KB) | ||
* |------------| 0x7000 | ||
* | bootloader | 4KB | ||
* +------------+ 0x7FFF | ||
*/ | ||
text (rx) : ORIGIN = 0, LENGTH = 64K | ||
keymap (rw!x) : ORIGIN = 0x6800, LENGTH = 2K | ||
data (rw!x) : ORIGIN = 0x800060, LENGTH = 0xffa0 | ||
eeprom (rw!x) : ORIGIN = 0x810000, LENGTH = 64K | ||
fuse (rw!x) : ORIGIN = 0x820000, LENGTH = 1K | ||
lock (rw!x) : ORIGIN = 0x830000, LENGTH = 1K | ||
signature (rw!x) : ORIGIN = 0x840000, LENGTH = 1K | ||
} | ||
SECTIONS | ||
{ | ||
/* Read-only sections, merged into text segment: */ | ||
.hash : { *(.hash) } | ||
.dynsym : { *(.dynsym) } | ||
.dynstr : { *(.dynstr) } | ||
.gnu.version : { *(.gnu.version) } | ||
.gnu.version_d : { *(.gnu.version_d) } | ||
.gnu.version_r : { *(.gnu.version_r) } | ||
.rel.init : { *(.rel.init) } | ||
.rela.init : { *(.rela.init) } | ||
.rel.text : | ||
{ | ||
*(.rel.text) | ||
*(.rel.text.*) | ||
*(.rel.gnu.linkonce.t*) | ||
} | ||
.rela.text : | ||
{ | ||
*(.rela.text) | ||
*(.rela.text.*) | ||
*(.rela.gnu.linkonce.t*) | ||
} | ||
.rel.fini : { *(.rel.fini) } | ||
.rela.fini : { *(.rela.fini) } | ||
.rel.rodata : | ||
{ | ||
*(.rel.rodata) | ||
*(.rel.rodata.*) | ||
*(.rel.gnu.linkonce.r*) | ||
} | ||
.rela.rodata : | ||
{ | ||
*(.rela.rodata) | ||
*(.rela.rodata.*) | ||
*(.rela.gnu.linkonce.r*) | ||
} | ||
.rel.data : | ||
{ | ||
*(.rel.data) | ||
*(.rel.data.*) | ||
*(.rel.gnu.linkonce.d*) | ||
} | ||
.rela.data : | ||
{ | ||
*(.rela.data) | ||
*(.rela.data.*) | ||
*(.rela.gnu.linkonce.d*) | ||
} | ||
.rel.ctors : { *(.rel.ctors) } | ||
.rela.ctors : { *(.rela.ctors) } | ||
.rel.dtors : { *(.rel.dtors) } | ||
.rela.dtors : { *(.rela.dtors) } | ||
.rel.got : { *(.rel.got) } | ||
.rela.got : { *(.rela.got) } | ||
.rel.bss : { *(.rel.bss) } | ||
.rela.bss : { *(.rela.bss) } | ||
.rel.plt : { *(.rel.plt) } | ||
.rela.plt : { *(.rela.plt) } | ||
/* Internal text space or external memory. */ | ||
.text : | ||
{ | ||
*(.vectors) | ||
KEEP(*(.vectors)) | ||
/* For data that needs to reside in the lower 64k of progmem. */ | ||
*(.progmem.gcc*) | ||
*(.progmem*) | ||
. = ALIGN(2); | ||
__trampolines_start = . ; | ||
/* The jump trampolines for the 16-bit limited relocs will reside here. */ | ||
*(.trampolines) | ||
*(.trampolines*) | ||
__trampolines_end = . ; | ||
/* For future tablejump instruction arrays for 3 byte pc devices. | ||
We don't relax jump/call instructions within these sections. */ | ||
*(.jumptables) | ||
*(.jumptables*) | ||
/* For code that needs to reside in the lower 128k progmem. */ | ||
*(.lowtext) | ||
*(.lowtext*) | ||
__ctors_start = . ; | ||
*(.ctors) | ||
__ctors_end = . ; | ||
__dtors_start = . ; | ||
*(.dtors) | ||
__dtors_end = . ; | ||
KEEP(SORT(*)(.ctors)) | ||
KEEP(SORT(*)(.dtors)) | ||
/* From this point on, we don't bother about wether the insns are | ||
below or above the 16 bits boundary. */ | ||
*(.init0) /* Start here after reset. */ | ||
KEEP (*(.init0)) | ||
*(.init1) | ||
KEEP (*(.init1)) | ||
*(.init2) /* Clear __zero_reg__, set up stack pointer. */ | ||
KEEP (*(.init2)) | ||
*(.init3) | ||
KEEP (*(.init3)) | ||
*(.init4) /* Initialize data and BSS. */ | ||
KEEP (*(.init4)) | ||
*(.init5) | ||
KEEP (*(.init5)) | ||
*(.init6) /* C++ constructors. */ | ||
KEEP (*(.init6)) | ||
*(.init7) | ||
KEEP (*(.init7)) | ||
*(.init8) | ||
KEEP (*(.init8)) | ||
*(.init9) /* Call main(). */ | ||
KEEP (*(.init9)) | ||
*(.text) | ||
. = ALIGN(2); | ||
*(.text.*) | ||
. = ALIGN(2); | ||
*(.fini9) /* _exit() starts here. */ | ||
KEEP (*(.fini9)) | ||
*(.fini8) | ||
KEEP (*(.fini8)) | ||
*(.fini7) | ||
KEEP (*(.fini7)) | ||
*(.fini6) /* C++ destructors. */ | ||
KEEP (*(.fini6)) | ||
*(.fini5) | ||
KEEP (*(.fini5)) | ||
*(.fini4) | ||
KEEP (*(.fini4)) | ||
*(.fini3) | ||
KEEP (*(.fini3)) | ||
*(.fini2) | ||
KEEP (*(.fini2)) | ||
*(.fini1) | ||
KEEP (*(.fini1)) | ||
*(.fini0) /* Infinite loop after program termination. */ | ||
KEEP (*(.fini0)) | ||
_etext = . ; | ||
} > text | ||
.data : AT (ADDR (.text) + SIZEOF (.text)) | ||
{ | ||
PROVIDE (__data_start = .) ; | ||
*(.data) | ||
*(.data*) | ||
*(.rodata) /* We need to include .rodata here if gcc is used */ | ||
*(.rodata*) /* with -fdata-sections. */ | ||
*(.gnu.linkonce.d*) | ||
. = ALIGN(2); | ||
_edata = . ; | ||
PROVIDE (__data_end = .) ; | ||
} > data | ||
.bss : AT (ADDR (.bss)) | ||
{ | ||
PROVIDE (__bss_start = .) ; | ||
*(.bss) | ||
*(.bss*) | ||
*(COMMON) | ||
PROVIDE (__bss_end = .) ; | ||
} > data | ||
__data_load_start = LOADADDR(.data); | ||
__data_load_end = __data_load_start + SIZEOF(.data); | ||
/* Global data not cleared after reset. */ | ||
.noinit : | ||
{ | ||
PROVIDE (__noinit_start = .) ; | ||
*(.noinit*) | ||
PROVIDE (__noinit_end = .) ; | ||
_end = . ; | ||
PROVIDE (__heap_start = .) ; | ||
} > data | ||
/* keymap region is located at end of flash | ||
* .fn_actions Fn actions definitions | ||
* .keymaps Mapping layers | ||
*/ | ||
.keymap : | ||
{ | ||
PROVIDE(__keymap_start = .) ; | ||
*(.keymap.fn_actions) /* 32*actions = 64bytes */ | ||
. = ALIGN(0x40); | ||
*(.keymap.keymaps) /* rest of .keymap section */ | ||
*(.keymap*) | ||
/* . = ALIGN(0x800); */ /* keymap section takes 2KB- */ | ||
} > keymap = 0x00 /* zero fill */ | ||
.eeprom : | ||
{ | ||
*(.eeprom*) | ||
__eeprom_end = . ; | ||
} > eeprom | ||
.fuse : | ||
{ | ||
KEEP(*(.fuse)) | ||
KEEP(*(.lfuse)) | ||
KEEP(*(.hfuse)) | ||
KEEP(*(.efuse)) | ||
} > fuse | ||
.lock : | ||
{ | ||
KEEP(*(.lock*)) | ||
} > lock | ||
.signature : | ||
{ | ||
KEEP(*(.signature*)) | ||
} > signature | ||
/* Stabs debugging sections. */ | ||
.stab 0 : { *(.stab) } | ||
.stabstr 0 : { *(.stabstr) } | ||
.stab.excl 0 : { *(.stab.excl) } | ||
.stab.exclstr 0 : { *(.stab.exclstr) } | ||
.stab.index 0 : { *(.stab.index) } | ||
.stab.indexstr 0 : { *(.stab.indexstr) } | ||
.comment 0 : { *(.comment) } | ||
/* DWARF debug sections. | ||
Symbols in the DWARF debugging sections are relative to the beginning | ||
of the section so we begin them at 0. */ | ||
/* DWARF 1 */ | ||
.debug 0 : { *(.debug) } | ||
.line 0 : { *(.line) } | ||
/* GNU DWARF 1 extensions */ | ||
.debug_srcinfo 0 : { *(.debug_srcinfo) } | ||
.debug_sfnames 0 : { *(.debug_sfnames) } | ||
/* DWARF 1.1 and DWARF 2 */ | ||
.debug_aranges 0 : { *(.debug_aranges) } | ||
.debug_pubnames 0 : { *(.debug_pubnames) } | ||
/* DWARF 2 */ | ||
.debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) } | ||
.debug_abbrev 0 : { *(.debug_abbrev) } | ||
.debug_line 0 : { *(.debug_line) } | ||
.debug_frame 0 : { *(.debug_frame) } | ||
.debug_str 0 : { *(.debug_str) } | ||
.debug_loc 0 : { *(.debug_loc) } | ||
.debug_macinfo 0 : { *(.debug_macinfo) } | ||
} |
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