MC56F8367链接文件

1、不使用PE时自动生成的链接文件# -# Freescale sample code# linker command file for MC56F8367 Device# using # flash pROM# flash xROM # internal xRAM # Large Data Model (LDM)# -# see end of file for additional notes & revision history# see Freescale docs for specific device memory map# memory use for this LCF: #

2、interrupt vectors -> flash pROM starting at zero# program code -> flash pROM# constants -> flash xROM # dynamic data -> flash pROM (copied to xRAM with init) # CodeWarrior preference settings:# M56800E Processor:# Small Program Model: OFF# Large Data Model: ON# M56800E Assembler:# Defaul

3、t Data Memory Model: 24-bit# Default Program Memory Model: 19-bit# M56800E Target pref panel:# config file: 56836x_flash.cfg# (sets OMR for internal memory)# EVM board jumpers:# JG4 on# (if not set by config file)# 56836x memory map for:# Small Data Model (SDM)# x memory: EX=0 (OMR)# p memory: mode

4、0 # x memory above 7FFF not available with SDM# complete 56835 x-RAM shown for clarity# see below for memory notes#MC56F8367# p_FLASH# 00X3_FFFF : internal p flash# 0x4_00000x4_3fff : internal p boot flash# 0x4_f8000x4_ffff : on-chip p RAM# x_flash# 00x3fff : internal x RAM# 0x40000x7fff internal x

5、flash# MEMORY .p_interrupts_ROM (RX) : ORIGIN = 0x0000, LENGTH = 0x00AC # reserved for interrupts中断向量放在这个地址空间内。 .p_flash_ROM (RX) : ORIGIN = 0x00AC, LENGTH = 0x3FF54 # 256K words contiguous flash minus interrupt space #internal p flash used for code and pROM data(copy to xRAM)内部程序FLASH空间，用于存放代码和已初始化

6、数据。 # p_flash_ROM_data mirrors internal xRAM, mapping to origin and length # the "X" flag in "RX" tells the debugger to download to p-memory. # the download to p-memory is directed to the address determined by AT # in the section definition below. .p_flash_ROM_data (RX) : ORIGIN

7、= 0x0001, LENGTH = 0x3FFF # internal xRAM mirror constant data storaged here, storage address is specificated by AT.Usually behind the code.这个地址与内部数据RAM重合，已初始化数据放在pROM里然后拷贝到内部数据RAM。 .p_boot_flash_ROM (RX) : ORIGIN = 0x40000, LENGTH = 0x4000 # 16K words # .p_reserved : ORIGIN = 0x44000, LENGTH = 0xB8

8、00 # 46K words .p_internal_RAM (RWX) : ORIGIN = 0x4F800, LENGTH = 0x0800 # 2K words .p_external_RAM (RWX) : ORIGIN = 0x50000, LENGTH = 0x0000 # max available .x_internal_RAM (RW) : ORIGIN = 0x0001, LENGTH = 0x3FFF #ON_CHIP RAM .x_flash_ROM (RW) : ORIGIN = 0x4000, LENGTH = 0x4000 .x_external_RAM (RW)

9、 : ORIGIN = 0x8000, LENGTH = 0x7000 .x_onchip_peripherals (RW) : ORIGIN = 0xF000, LENGTH = 0x1000 .x_external_RAM_2 (RW) : ORIGIN = 0x10000, LENGTH = 0xFEFF00 .x_EOnCE (RW) : ORIGIN = 0xFFFF00, LENGTH = 0x0000 # we ensure the interrupt vector section is not deadstripped here# the label "interru

10、pt_vectors" comes from file 56835x_vector.asmKEEP_SECTION interrupt_vectors.text#保证中断向量不会被编译器优化掉SECTIONS .interrupt_code : * (interrupt_vectors.text) > .p_interrupts_ROM#保证中断向量放在这个位置ORIGIN = 0x0000, LENGTH = 0x00AC .boot_code : * (startup.text) * (utility.text) > .p_boot_flash_ROM#启动代码放在b

11、oot flash处 .executing_code :# .text sections * (interrupt_routines.text) * (rtlib.text)* (fp_engine.text)* (.text)* (user.text)# save address where for the data start in pROM . = ALIGN(2); _pROM_data_start = .; > .p_flash_ROM#程序代码放在内部程序flash区域 .data_in_xROM : # constant data is placed in x flash

12、ROM * (.const.data.char) # used if "Emit Separate Char Data Section" enabled * (.const.data) . = ALIGN(2); > .x_flash_ROM #常量数据放在内部数据flash区域 # AT sets the download address# the download stashes the data just after the program code# as determined by our saved pROM data start variable.dat

13、a_in_p_flash_ROM : AT(_pROM_data_start) #_pROM_data_start位于可执行代码的后面。告诉编译器将数据放置到AT所指定的ROM地址 # the data sections flashed to pROM # save data start so we can copy data later to xRAM _xRAM_data_start = .; * (.data.char) # used if "Emit Separate Char Data Section" * (.data) * (fp_state.data)* (

14、rtlib.data) # save data end and calculate data block size . = ALIGN(2); # ensure _data_size is word-aligned # since rom-to-ram copy is by word # and we could have odd-number bytes # in .data section since 56800E # has byte addressing_xRAM_data_end = .;_data_size = _xRAM_data_end - _xRAM_data_start;

15、> .p_flash_ROM_data # this section is designated as p-memory # with X flag in the memory map # the start address and length map to # actual internal xRAM#本段的data表示已经初始化的全局变量，这些初始化数据放在_pROM_data_start紧跟代码，而变量的地址则放在p_flash_ROM_data所对应的xRAM的地址区。经实例测试过。_xRAM_data_start即为片上RAM的起始地址，也就是说，该 段仅将初始化数据放在_p

16、ROM_data_start处。.data : # save space for the pROM data copy . = _data_size +1 ; # .bss sections . = ALIGN(2); * (rtlib.bss.lo) * (rtlib.bss) . = ALIGN(2); _bss_addr = .; * (.bss.char) # used if "Emit Separate Char Data Section" enabled * (.bss) _bss_end = .;_bss_size = _bss_end - _bss_addr

17、; # setup the heap address . = ALIGN(4); _heap_addr = .; _heap_size = 0x100; _heap_end = _heap_addr + _heap_size; . = _heap_end; # setup the stack address _min_stack_size = 0x200; _stack_addr = _heap_end + 2; _stack_end = _stack_addr + _min_stack_size; . = _stack_end; # used by MSL F_heap_addr = _he

18、ap_addr; F_heap_end = _heap_end; # stationery init code uses these globals: F_Lstack_addr = _stack_addr; # rom-to-ram utilityF_Ldata_size = _data_size;F_Ldata_RAM_addr = _xRAM_data_start;F_Ldata_ROM_addr = _pROM_data_start; F_xROM_to_xRAM = 0x0000; F_pROM_to_xRAM = 0x0001; # true # zeroBSS utility F

19、_Lbss_addr = _bss_addr; F_Lbss_size = _bss_size; > .x_internal_RAM # -# additional notes:# about the reserved sections:# p_interrupts_RAM - reserved in internal pRAM# memory space reserved for interrupt vectors# interrupt vectors must start at address zero# about the memory map:# SMM xRAM limit i

20、s 0x7FFF# about LCF conventions:# program memory (p memory)# (RWX) read/write/execute for pRAM# (RX) read/execute for flashed pROM# data memory (X memory)# (RW) read/write for xRAM# (R) read for data flashed xROM or reserved x memory# LENGTH = next start address - previous# LENGTH = 0x0000 means use

21、 all remaing memory# about ROM-to-RAM copying at init time:# In embedded programming, it is common for a portion of # a program resident in ROM to be copied into RAM at runtime.# For starters, program variables cannot be accessed until # they are copied to RAM. # To indicate data or code that is mea

22、nt to be copied # from ROM to RAM,the data or code is given two addresses.# One address is the resident location in ROM (defined by # the linker command file). The other is the intended# location in RAM (defined in C code where we will # do the actual copying).# To create a section with the resident

23、 location in ROM # and an intended location in RAM, you define the two addresses # in the linker command file.# Use the MEMORY segment to specify the intended RAM location,# and the AT(address)parameter to specify the resident ROM address.# revision history # 011226 R1.0 c.m. first version# 020220 R

24、1.1 a.h. updates# 020308 R1.1 a.h. 56838E# 021101 R2.0 a.h. R2.0 prep# 021204 R2.01 a.h. bss align by 1# 030222 R2.1 a.h. 568345/346# 030630 R6.0 a.h. ldm pROM-xRAM# 030814 R6.0 a.h. align(1) for data# 030916 R6.01 a.h. 56835x# 040723 R7.0 a.h. 56836x# 040723 R7.0 a.h. 56836x# - end - 使用PE时生成的链接文件1#

25、 # THIS BEAN MODULE IS GENERATED BY THE TOOL. DO NOT MODIFY IT.# Filename : FLASH_LDM.cmd# Project : bootloader1# Processor : 56F8367# Compiler : CodeWarrior DSP C Compiler# Date/Time : 2014-12-16, 14:28, # CodeGen: 3# Abstract :# This file is used by the linker. It describes files to be linked,# me

26、mory ranges, stack size, etc. For detailed description about linker# command files see CodeWarrior documentation. This file is generated by default.# You can switch off generation by setting the property "Generate linker file = no"# in the "Build options" tab of the CPU bean and

27、then modify this file as needed.# Copyright : 1997 - 2014 Freescale Semiconductor, Inc. # All Rights Reserved.# # Redistribution and use in source and binary forms, with or without modification,# are permitted provided that the following conditions are met:# # o Redistributions of source code must r

28、etain the above copyright notice, this list# of conditions and the following disclaimer.# # o 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.#

29、# o Neither the name of Freescale Semiconductor, Inc. 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

30、 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

31、 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

32、OF THE USE OF THIS# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.# # http: # mail: support# #MEMORY # I/O registers area for on-chip peripherals .x_Peripherals (RW) : ORIGIN = 0xF020, LENGTH = 0 # List of all sections specified in the "Build options" tab #Internal vector boo

33、t area. .p_Interruptsboot (RWX) : ORIGIN = 0x00040000, LENGTH = 0x0004 .p_Interrupts (RWX) : ORIGIN = 0x00000000, LENGTH = 0x000000AC .p_Code (RWX) : ORIGIN = 0x000000AC, LENGTH = 0x0003FF54 .x_Data (RW) : ORIGIN = 0x00000001, LENGTH = 0x00003FFF #Other memory segments .x_internal_ROM (RW) : ORIGIN

34、= 0x00004000, LENGTH = 0x4000 .p_internal_RAM (RWX) : ORIGIN = 0x0004F800, LENGTH = 0x0800KEEP_SECTION interrupt_vectorsboot.text KEEP_SECTION interrupt_vectors.text SECTIONS .interrupt_vectorsboot : F_vector_addr = .; # interrupt vectors boot area * (interrupt_vectorsboot.text) > .p_Interruptsbo

35、ot .interrupt_vectors : # interrupt vectors * (interrupt_vectors.text) > .p_Interrupts .ApplicationCode : F_Pcode_start_addr = .; # .text sections * (.text) * (rtlib.text) * (startup.text) * (fp_engine.text) * (ll_engine.text) * (user.text) * (.data.pmem) F_Pcode_end_addr = .; > .p_Code .Appli

36、cationData : # .data sections * (.const.data.char) # used if "Emit Separate Char Data Section" enabled * (.const.data) * (fp_state.data) * (rtlib.data) * (.data.char) # used if "Emit Separate Char Data Section" enabled * (.data) # .bss sections * (rtlib.bss.lo) * (rtlib.bss) . =

37、ALIGN(4); F_Xbss_start_addr = .; _START_BSS = .; * (.bss.char) # used if "Emit Separate Char Data Section" enabled * (.bss) . = ALIGN(2); # used to ensure proper functionality of the zeroBSS hardware loop utility _END_BSS = .; F_Xbss_length = _END_BSS - _START_BSS; /* Setup the HEAP addres

38、s */ . = ALIGN(4); _HEAP_ADDR = .; _HEAP_SIZE = 0x00000100; _HEAP_END = _HEAP_ADDR + _HEAP_SIZE; . = _HEAP_END; /* SETUP the STACK address */ _min_stack_size = 0x00000200; _stack_addr = _HEAP_END; _stack_end = _stack_addr + _min_stack_size; . = _stack_end; /* EXPORT HEAP and STACK runtime to librari

39、es */ F_heap_addr = _HEAP_ADDR; F_heap_end = _HEAP_END; F_Lstack_addr = _HEAP_END; F_StackAddr = _HEAP_END; F_StackEndAddr = _stack_end - 1; # runtime code _init_sections uses these globals: F_Ldata_size = 0x0000; F_Ldata_RAM_addr = 0x0000; F_Ldata_ROM_addr = 0x0000; F_Livt_size = 0x0000; F_Livt_RAM

40、_addr = 0x0000; F_Livt_ROM_addr = 0x0000; F_xROM_to_xRAM = 0x0000; F_pROM_to_xRAM = 0x0000; F_pROM_to_pRAM = 0x0000; F_start_bss = _START_BSS; F_end_bss = _END_BSS; _DATA_END=.; > .x_Data可以看出，.data是直接放在.x_Data里也就内部RAM里的，所以用下载工具下载时，初始过的变量能正确运行，而下电后重新上电是不能正确初始化的。使用PE时生成的链接文件2# # THIS BEAN MODULE IS

41、 GENERATED BY THE TOOL. DO NOT MODIFY IT.# Filename : FLASH_LDM.cmd# Project : bootloader1# Processor : 56F8367# Compiler : CodeWarrior DSP C Compiler# Date/Time : 2014-12-16, 14:57, # CodeGen: 6# Abstract :# This file is used by the linker. It describes files to be linked,# memory ranges, stack siz

42、e, etc. For detailed description about linker# command files see CodeWarrior documentation. This file is generated by default.# You can switch off generation by setting the property "Generate linker file = no"# in the "Build options" tab of the CPU bean and then modify this file

43、as needed.# Copyright : 1997 - 2014 Freescale Semiconductor, Inc. # All Rights Reserved.# # Redistribution and use in source and binary forms, with or without modification,# are permitted provided that the following conditions are met:# # o Redistributions of source code must retain the above copyri

44、ght notice, this list# of conditions and the following disclaimer.# # o 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.# # o Neither the name o

45、f Freescale Semiconductor, Inc. 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,