300 lines
7.1 KiB
ArmAsm
300 lines
7.1 KiB
ArmAsm
/***************************************************************************
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*
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* Copyright 2015-2019 BES.
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* All rights reserved. All unpublished rights reserved.
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*
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* No part of this work may be used or reproduced in any form or by any
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* means, or stored in a database or retrieval system, without prior written
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* permission of BES.
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*
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* Use of this work is governed by a license granted by BES.
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* This work contains confidential and proprietary information of
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* BES. which is protected by copyright, trade secret,
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* trademark and other intellectual property rights.
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*
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****************************************************************************/
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#include "plat_addr_map.h"
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#define HEAP_SECTION_SIZE 0x40
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#define STACK_SECTION_SIZE 0x1000
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#define CODE_MSG_OVERHEAD 8
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/* TODO: Add FLASH_REGION_OFFSET if there are multiple levels of boot loaders */
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#if !defined(OTA_BOOT_SIZE) && defined(OTA_CODE_OFFSET)
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#define FLASH_REGION_BASE (FLASH_BASE + OTA_CODE_OFFSET)
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#else
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#define FLASH_REGION_BASE (FLASH_BASE)
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#endif
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#ifndef FLASH_REGION_SIZE
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#define FLASH_REGION_SIZE (FLASH_SIZE - (FLASH_REGION_BASE - FLASH_BASE))
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#endif
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#define FLASH_NC_REGION_BASE FLASH_C_TO_NC(FLASH_REGION_BASE)
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#define FLASHX_REGION_BASE FLASH_TO_FLASHX(FLASH_REGION_BASE)
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/* Linker script to configure memory regions. */
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MEMORY
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{
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ROM (rx) : ORIGIN = ROM_BASE, LENGTH = ROM_SIZE /* see plat_addr_map.h and common.mk */
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FLASH (r) : ORIGIN = FLASH_REGION_BASE, LENGTH = FLASH_REGION_SIZE
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FLASH_NC (r) : ORIGIN = FLASH_NC_REGION_BASE, LENGTH = FLASH_REGION_SIZE
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FLASHX (rx) : ORIGIN = FLASHX_REGION_BASE, LENGTH = FLASH_REGION_SIZE
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RAM (rwx) : ORIGIN = RAM_BASE, LENGTH = RAM_SIZE
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RAMX (rx) : ORIGIN = RAMX_BASE, LENGTH = RAM_SIZE
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}
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/* Library configurations */
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GROUP(libgcc.a)
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/* Linker script to place sections and symbol values. Should be used together
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* with other linker script that defines memory regions ROM and RAM.
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* It references following symbols, which must be defined in code:
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* Reset_Handler : Entry of reset handler
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*
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* It defines following symbols, which code can use without definition:
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* __export_fn_rom
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* __exec_struct_start
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* __cust_cmd_init_tbl_start
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* __cust_cmd_init_tbl_end
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* __cust_cmd_hldr_tbl_start
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* __cust_cmd_hldr_tbl_end
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* __exidx_start
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* __exidx_end
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* __etext
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* __data_start__
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* __data_end__
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* __bss_start__
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* __bss_end__
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* __end__
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* end
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* __HeapLimit
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* __StackLimit
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* __StackTop
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* __stack
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* __free_ram
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*/
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ENTRY(Boot_Loader)
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SECTIONS
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{
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__export_fn_rom = (ORIGIN(ROM) + LENGTH(ROM) - ROM_BUILD_INFO_SECTION_SIZE - ROM_EXPORT_FN_SECTION_SIZE);
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.boot_struct (ORIGIN(FLASH)) :
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{
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__flash_start = .;
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KEEP(*(.boot_struct))
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. = ALIGN(4);
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} > FLASH
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. = FLASH_TO_FLASHX(.);
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.boot_text_flash (.) : AT (FLASHX_TO_FLASH(ADDR(.boot_text_flash)))
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{
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*(.boot_loader)
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*(.boot_text_flash*)
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*(.boot_rodata_flash*)
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*:main.o(.text* .rodata*)
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*:hal_bootmode.o(.text* .rodata*)
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*:hal_cmu_*.o(.text.hal_cmu_get_bootmode_addr .rodata.hal_cmu_get_bootmode_addr)
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*:cmsis_nvic.o(.text.NVIC_DisableAllIRQs .rodata.NVIC_DisableAllIRQs)
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. = ALIGN(4);
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} > FLASHX
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.ota_boot_info (ALIGN(4096)) :
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{
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*(.ota_boot_info)
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. = (0x1000);
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} > FLASHX
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.ota_boot_rev (ALIGN(4096)) :
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{
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*(.ota_boot_rev)
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. = (0x1000);
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} > FLASHX
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. = FLASHX_TO_FLASH(.);
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.got_info (.) :
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{
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__got_info_start = .;
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__got_start = .;
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*(.got)
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. = ALIGN(4);
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__got_end = .;
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__got_plt_start = .;
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*(.got.plt)
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. = ALIGN(4);
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__igot_plt_start = .;
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*(.igot.plt)
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. = ALIGN(4);
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__dynamic_start = .;
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*(.dynamic)
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. = ALIGN(4);
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__got_info_end = .;
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} > FLASH
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.vector_table (ORIGIN(RAM)) (NOLOAD) :
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{
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KEEP(*(.vector_table))
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. = VECTOR_SECTION_SIZE;
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. = ALIGN(4);
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} > RAM
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.reboot_param (.) (NOLOAD) :
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{
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KEEP(*(.reboot_param))
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. = REBOOT_PARAM_SECTION_SIZE;
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. = ALIGN(4);
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} > RAM
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.burn_buffer (.) (NOLOAD) :
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{
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/* The size of .burn_buffer should be greater than __rom_HeapLimit. In most cases 8K is enough. */
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KEEP(*(.burn_buffer))
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. = ALIGN(4);
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} > RAM
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/*
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.code_dummy (.) (NOLOAD) :
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{
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. = CODE_MSG_OVERHEAD;
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. = ALIGN(4);
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} > RAM
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*/
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__boot_sram_start__ = .;
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. = RAM_TO_RAMX(.);
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__boot_sram_start_flash__ = LOADADDR(.got_info) + SIZEOF(.got_info);
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.text (.) : AT (__boot_sram_start_flash__)
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{
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*(.text*)
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. = ALIGN(4);
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} > RAMX
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.ARM.extab (.) : AT (LOADADDR(.text) + SIZEOF(.text))
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{
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*(.ARM.extab* .gnu.linkonce.armextab.*)
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} > RAMX
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__exidx_start = .;
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/* .ARM.exidx contains R_ARM_PREL31 (+-0x40000000) offset to functions, which means
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* the session location cannot be too far away from the function addresses */
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.ARM.exidx (.) : AT (LOADADDR(.ARM.extab) + SIZEOF(.ARM.extab))
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{
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*(.ARM.exidx* .gnu.linkonce.armexidx.*)
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} > RAMX
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__exidx_end = .;
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. = RAMX_TO_RAM(.);
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.rodata (.) : AT (LOADADDR(.ARM.exidx) + SIZEOF(.ARM.exidx))
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{
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*(.rodata*)
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*(.boot_rodata_sram*)
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. = ALIGN(4);
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__cust_cmd_init_tbl_start = .;
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KEEP(*(.cust_cmd_init_tbl))
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__cust_cmd_init_tbl_end = .;
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. = ALIGN(4);
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__cust_cmd_hldr_tbl_start = .;
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KEEP(*(.cust_cmd_hldr_tbl))
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__cust_cmd_hldr_tbl_end = .;
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*(.note.gnu.build-id)
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. = ALIGN(4);
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} > RAM
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__etext = .;
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.data (.) : AT (LOADADDR(.rodata) + SIZEOF(.rodata))
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{
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__data_start__ = .;
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*(.data*)
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. = ALIGN(4);
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/* All data end */
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__data_end__ = .;
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} > RAM
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__boot_sram_end__ = .;
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__boot_sram_end_flash__ = LOADADDR(.data) + SIZEOF(.data);
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.build_info (LOADADDR(.data) + SIZEOF(.data)) : AT (LOADADDR(.data) + SIZEOF(.data))
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{
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KEEP(*(.build_info))
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. = ALIGN(4);
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} > FLASH = 0x00000000
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/* The following section be the last loaded section */
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.code_start_addr (.) :
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{
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__app_entry_address__ = .;
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LONG(APP_ENTRY_ADDRESS);
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__download_uart_bandrate__ = .;
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LONG(DOWNLOAD_UART_BANDRATE);
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LONG(BUILD_INFO_MAGIC);
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LONG(ABSOLUTE(__flash_start));
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} > FLASH
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__flash_end = .;
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.bss (ADDR(.data)+SIZEOF(.data)) (NOLOAD) :
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{
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. = ALIGN(4);
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__bss_start__ = .;
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*(.bss*)
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*(COMMON)
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. = ALIGN(4);
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__bss_end__ = .;
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} > RAM
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.heap (.) (NOLOAD) :
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{
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. = ALIGN(8);
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__HeapBase = .;
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__end__ = .;
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end = __end__;
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. += HEAP_SECTION_SIZE;
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. = ALIGN(8);
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__HeapLimit = .;
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} > RAM
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/* .stack_dummy section doesn't contains any symbols. It is only
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* used for linker to calculate size of stack sections, and assign
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* values to stack symbols later */
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.stack_dummy (.) (COPY) :
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{
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. = STACK_SECTION_SIZE;
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. = ALIGN(8);
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} > RAM
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/* Set stack top to end of RAM, and stack limit move down by
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* size of stack_dummy section */
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__StackTop = ORIGIN(RAM) + LENGTH(RAM);
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__StackLimit = __StackTop - SIZEOF(.stack_dummy);
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PROVIDE(__stack = __StackTop);
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/* Check if data + heap + stack exceeds RAM limit */
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ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
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__free_ram = __StackLimit - __HeapLimit;
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__boot_bss_sram_start__ = .;
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__boot_bss_sram_end__ = .;
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__sram_text_data_start_flash__ = .;
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__sram_text_data_end_flash__ = .;
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__sram_text_data_start__ = .;
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__sram_bss_start__ = .;
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__sram_bss_end__ = .;
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__fast_sram_text_data_start_flash__ = .;
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__fast_sram_text_data_end_flash__ = .;
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__fast_sram_text_data_start__ = .;
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}
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