| /* |
| * Copyright (c) 2020, The OpenThread Authors. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** |
| * @file |
| * This file implements the OpenThread linker script for the |
| * Silicon Labs efr32mg1 platform. |
| * |
| */ |
| |
| MEMORY |
| { |
| FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00040000 |
| RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 32K |
| } |
| |
| /* Linker script to place sections and symbol values. Should be used together |
| * with other linker script that defines memory regions FLASH and RAM. |
| * It references following symbols, which must be defined in code: |
| * Reset_Handler : Entry of reset handler |
| * |
| * It defines following symbols, which code can use without definition: |
| * __exidx_start |
| * __exidx_end |
| * __copy_table_start__ |
| * __copy_table_end__ |
| * __zero_table_start__ |
| * __zero_table_end__ |
| * __etext |
| * __data_start__ |
| * __preinit_array_start |
| * __preinit_array_end |
| * __init_array_start |
| * __init_array_end |
| * __fini_array_start |
| * __fini_array_end |
| * __data_end__ |
| * __bss_start__ |
| * __bss_end__ |
| * __end__ |
| * end |
| * __HeapBase |
| * __HeapLimit |
| * __StackLimit |
| * __StackTop |
| * __stack |
| * __Vectors_End |
| * __Vectors_Size |
| */ |
| ENTRY(Reset_Handler) |
| |
| SECTIONS |
| { |
| .text : |
| { |
| KEEP(*(.vectors)) |
| __Vectors_End = .; |
| __Vectors_Size = __Vectors_End - __Vectors; |
| __end__ = .; |
| |
| *(.text*) |
| |
| KEEP(*(.init)) |
| KEEP(*(.fini)) |
| |
| /* .ctors */ |
| *crtbegin.o(.ctors) |
| *crtbegin?.o(.ctors) |
| *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors) |
| *(SORT(.ctors.*)) |
| *(.ctors) |
| |
| /* .dtors */ |
| *crtbegin.o(.dtors) |
| *crtbegin?.o(.dtors) |
| *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors) |
| *(SORT(.dtors.*)) |
| *(.dtors) |
| |
| *(.rodata*) |
| |
| KEEP(*(.eh_frame*)) |
| } > FLASH |
| |
| .ARM.extab : |
| { |
| *(.ARM.extab* .gnu.linkonce.armextab.*) |
| } > FLASH |
| |
| __exidx_start = .; |
| .ARM.exidx : |
| { |
| *(.ARM.exidx* .gnu.linkonce.armexidx.*) |
| } > FLASH |
| __exidx_end = .; |
| |
| /* To copy multiple ROM to RAM sections, |
| * uncomment .copy.table section and, |
| * define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */ |
| /* |
| .copy.table : |
| { |
| . = ALIGN(4); |
| __copy_table_start__ = .; |
| LONG (__etext) |
| LONG (__data_start__) |
| LONG (__data_end__ - __data_start__) |
| LONG (__etext2) |
| LONG (__data2_start__) |
| LONG (__data2_end__ - __data2_start__) |
| __copy_table_end__ = .; |
| } > FLASH |
| */ |
| |
| /* To clear multiple BSS sections, |
| * uncomment .zero.table section and, |
| * define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */ |
| /* |
| .zero.table : |
| { |
| . = ALIGN(4); |
| __zero_table_start__ = .; |
| LONG (__bss_start__) |
| LONG (__bss_end__ - __bss_start__) |
| LONG (__bss2_start__) |
| LONG (__bss2_end__ - __bss2_start__) |
| __zero_table_end__ = .; |
| } > FLASH |
| */ |
| |
| __etext = .; |
| |
| .data : AT (__etext) |
| { |
| __data_start__ = .; |
| *(vtable) |
| *(.data*) |
| . = ALIGN (4); |
| PROVIDE (__ram_func_section_start = .); |
| *(.ram) |
| PROVIDE (__ram_func_section_end = .); |
| |
| . = ALIGN(4); |
| /* preinit data */ |
| PROVIDE_HIDDEN (__preinit_array_start = .); |
| KEEP(*(.preinit_array)) |
| PROVIDE_HIDDEN (__preinit_array_end = .); |
| |
| . = ALIGN(4); |
| /* init data */ |
| PROVIDE_HIDDEN (__init_array_start = .); |
| KEEP(*(SORT(.init_array.*))) |
| KEEP(*(.init_array)) |
| PROVIDE_HIDDEN (__init_array_end = .); |
| |
| . = ALIGN(4); |
| /* finit data */ |
| PROVIDE_HIDDEN (__fini_array_start = .); |
| KEEP(*(SORT(.fini_array.*))) |
| KEEP(*(.fini_array)) |
| PROVIDE_HIDDEN (__fini_array_end = .); |
| |
| KEEP(*(.jcr*)) |
| . = ALIGN(4); |
| /* All data end */ |
| __data_end__ = .; |
| |
| } > RAM |
| |
| .bss : |
| { |
| . = ALIGN(4); |
| __bss_start__ = .; |
| *(.bss*) |
| *(COMMON) |
| . = ALIGN(4); |
| __bss_end__ = .; |
| } > RAM |
| |
| .heap (COPY): |
| { |
| __HeapBase = .; |
| __end__ = .; |
| end = __end__; |
| _end = __end__; |
| KEEP(*(.heap*)) |
| __HeapLimit = .; |
| } > RAM |
| |
| /* .stack_dummy section doesn't contains any symbols. It is only |
| * used for linker to calculate size of stack sections, and assign |
| * values to stack symbols later */ |
| .stack_dummy (COPY): |
| { |
| KEEP(*(.stack*)) |
| } > RAM |
| |
| /* Set stack top to end of RAM, and stack limit move down by |
| * size of stack_dummy section */ |
| __StackTop = ORIGIN(RAM) + LENGTH(RAM); |
| __StackLimit = __StackTop - SIZEOF(.stack_dummy); |
| PROVIDE(__stack = __StackTop); |
| |
| /*******************************************************************/ |
| /* Define flash block for nvm3 */ |
| .nvm (DSECT) : { |
| KEEP(*(.simee*)) |
| } > FLASH |
| |
| linker_nvm_end = ORIGIN(FLASH) + LENGTH(FLASH); |
| linker_nvm_begin = linker_nvm_end - SIZEOF(.nvm); |
| linker_nvm_size = SIZEOF(.nvm); |
| __nvm3Base = linker_nvm_begin; |
| /*******************************************************************/ |
| |
| /* Check if data + heap + stack exceeds RAM limit */ |
| ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack") |
| |
| /* Check if FLASH usage exceeds FLASH size */ |
| ASSERT( LENGTH(FLASH) >= (__etext + SIZEOF(.data)), "FLASH memory overflowed !") |
| } |