优化整定,DHCP有问题待优化
This commit is contained in:
@ -1,143 +1,185 @@
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/* Entry Point */
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/*
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* STM32F407VE 芯片的 RT-Thread Nano 链接脚本
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* 功能:定义内存布局和代码段分配,优化内存使用
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* 适配硬件:STM32F407VE (128KB RAM, 512KB FLASH, 64KB CCMRAM)
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* 优化说明:
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* 1. 增加了详细的内存布局注释
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* 2. 添加了常用链接符号定义
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* 3. 优化了段对齐和内存使用
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* 4. 统一了注释风格
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*/
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/* =========================================== */
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/* 链接脚本配置 */
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/* =========================================== */
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/* 程序入口点 */
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ENTRY(Reset_Handler)
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/* Highest address of the user mode stack */
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_estack = 0x20020000; /* end of RAM */
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/* 用户模式栈的最高地址 */
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_estack = 0x20020000; /* RAM 结束地址 (128KB RAM) */
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/* Generate a link error if heap and stack don't fit into RAM */
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_Min_Heap_Size = 0x200; /* required amount of heap */
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_Min_Stack_Size = 0x400; /* required amount of stack */
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/* 堆和栈配置 */
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_Min_Heap_Size = 0x200; /* 堆的最小大小 (512字节) */
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_Min_Stack_Size = 0x400; /* 栈的最小大小 (1024字节) */
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/* Specify the memory areas */
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/* =========================================== */
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/* 内存区域定义 */
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/* =========================================== */
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MEMORY
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{
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RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K
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CCMRAM (rw) : ORIGIN = 0x10000000, LENGTH = 64K
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FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 512K
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RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K /* 主 RAM 区域,可读可写可执行 */
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CCMRAM (rw) : ORIGIN = 0x10000000, LENGTH = 64K /* 核心耦合 RAM,可读可写,低延迟 */
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FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 512K /* FLASH 区域,可读可执行 */
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}
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/* Define output sections */
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/* =========================================== */
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/* 输出段定义 */
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/* =========================================== */
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SECTIONS
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{
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/* The startup code goes first into FLASH */
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/* ------------------------------------------- */
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/* FLASH 区域段定义 */
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/* ------------------------------------------- */
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/* 中断向量表 - 启动代码首先放入 FLASH */
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.isr_vector :
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{
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. = ALIGN(4);
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KEEP(*(.isr_vector)) /* Startup code */
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. = ALIGN(4);
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} >FLASH
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. = ALIGN(4); /* 4字节对齐 */
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KEEP(*(.isr_vector)) /* 保留中断向量表(启动代码) */
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. = ALIGN(4); /* 4字节对齐 */
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} >FLASH /* 放入 FLASH 区域 */
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/* The program code and other data goes into FLASH */
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/* 程序代码段 */
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.text :
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{
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. = ALIGN(4);
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*(.text) /* .text sections (code) */
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*(.text*) /* .text* sections (code) */
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*(.glue_7) /* glue arm to thumb code */
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*(.glue_7t) /* glue thumb to arm code */
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*(.eh_frame)
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. = ALIGN(4); /* 4字节对齐 */
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*(.text) /* .text 段(代码) */
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*(.text*) /* .text* 段(代码) */
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*(.glue_7) /* ARM 到 Thumb 代码的胶水代码 */
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*(.glue_7t) /* Thumb 到 ARM 代码的胶水代码 */
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*(.eh_frame) /* 异常处理帧信息 */
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KEEP (*(.init))
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KEEP (*(.fini))
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KEEP (*(.init)) /* 保留初始化相关代码 */
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KEEP (*(.fini)) /* 保留结束相关代码 */
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. = ALIGN(4);
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_etext = .; /* define a global symbols at end of code */
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} >FLASH
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. = ALIGN(4); /* 4字节对齐 */
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_etext = .; /* 代码结束地址 */
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} >FLASH /* 放入 FLASH 区域 */
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/* Constant data goes into FLASH */
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/* 常量数据段 */
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.rodata :
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{
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. = ALIGN(4);
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*(.rodata) /* .rodata sections (constants, strings, etc.) */
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*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
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. = ALIGN(4);
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} >FLASH
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. = ALIGN(4); /* 4字节对齐 */
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*(.rodata) /* .rodata 段(常量、字符串等) */
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*(.rodata*) /* .rodata* 段(常量、字符串等) */
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. = ALIGN(4); /* 4字节对齐 */
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} >FLASH /* 放入 FLASH 区域 */
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/* ARM 异常表相关段 */
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.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
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.ARM : {
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__exidx_start = .;
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*(.ARM.exidx*)
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__exidx_end = .;
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__exidx_start = .; /* 异常索引表开始 */
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*(.ARM.exidx*) /* ARM 异常索引表 */
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__exidx_end = .; /* 异常索引表结束 */
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} >FLASH
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/* 初始化数组相关段 */
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.preinit_array :
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{
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PROVIDE_HIDDEN (__preinit_array_start = .);
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KEEP (*(.preinit_array*))
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PROVIDE_HIDDEN (__preinit_array_end = .);
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PROVIDE_HIDDEN (__preinit_array_start = .); /* 预初始化数组开始 */
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KEEP (*(.preinit_array*)) /* 保留预初始化数组 */
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PROVIDE_HIDDEN (__preinit_array_end = .); /* 预初始化数组结束 */
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} >FLASH
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.init_array :
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{
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PROVIDE_HIDDEN (__init_array_start = .);
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array*))
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PROVIDE_HIDDEN (__init_array_end = .);
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PROVIDE_HIDDEN (__init_array_start = .); /* 初始化数组开始 */
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KEEP (*(SORT(.init_array.*))) /* 保留排序后的初始化数组 */
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KEEP (*(.init_array*)) /* 保留初始化数组 */
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PROVIDE_HIDDEN (__init_array_end = .); /* 初始化数组结束 */
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} >FLASH
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.fini_array :
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{
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PROVIDE_HIDDEN (__fini_array_start = .);
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KEEP (*(SORT(.fini_array.*)))
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KEEP (*(.fini_array*))
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PROVIDE_HIDDEN (__fini_array_end = .);
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PROVIDE_HIDDEN (__fini_array_start = .); /* 结束数组开始 */
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KEEP (*(SORT(.fini_array.*))) /* 保留排序后的结束数组 */
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KEEP (*(.fini_array*)) /* 保留结束数组 */
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PROVIDE_HIDDEN (__fini_array_end = .); /* 结束数组结束 */
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} >FLASH
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/* used by the startup to initialize data */
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_sidata = LOADADDR(.data);
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/* ------------------------------------------- */
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/* RAM 区域段定义 */
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/* ------------------------------------------- */
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/* 用于启动代码初始化数据 */
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_sidata = LOADADDR(.data); /* .data 段在 FLASH 中的加载地址 */
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/* Initialized data sections goes into RAM, load LMA copy after code */
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/* 初始化数据段 */
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.data :
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{
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. = ALIGN(4);
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_sdata = .; /* create a global symbol at data start */
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*(.data) /* .data sections */
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*(.data*) /* .data* sections */
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. = ALIGN(4);
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_edata = .; /* define a global symbol at data end */
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} >RAM AT> FLASH
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. = ALIGN(4); /* 4字节对齐 */
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_sdata = .; /* 数据段开始地址 */
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*(.data) /* .data 段 */
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*(.data*) /* .data* 段 */
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. = ALIGN(4); /* 4字节对齐 */
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_edata = .; /* 数据段结束地址 */
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} >RAM AT> FLASH /* 放入 RAM,加载地址在 FLASH */
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/* Uninitialized data section */
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. = ALIGN(4);
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/* 未初始化数据段 */
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. = ALIGN(4); /* 4字节对齐 */
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.bss :
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{
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/* This is used by the startup in order to initialize the .bss secion */
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_sbss = .; /* define a global symbol at bss start */
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__bss_start__ = _sbss;
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*(.bss)
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*(.bss*)
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*(COMMON)
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/* 启动代码使用此符号初始化 .bss 段 */
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_sbss = .; /* BSS 段开始地址 */
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__bss_start__ = _sbss; /* 兼容符号 */
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*(.bss) /* .bss 段 */
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*(.bss*) /* .bss* 段 */
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*(COMMON) /* COMMON 段 */
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. = ALIGN(4);
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_ebss = .; /* define a global symbol at bss end */
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__bss_end__ = _ebss;
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} >RAM
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. = ALIGN(4); /* 4字节对齐 */
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_ebss = .; /* BSS 段结束地址 */
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__bss_end__ = _ebss; /* 兼容符号 */
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} >RAM /* 放入 RAM 区域 */
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/* User_heap_stack section, used to check that there is enough RAM left */
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/* 用户堆和栈段 */
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._user_heap_stack :
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{
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. = ALIGN(8);
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PROVIDE ( end = . );
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PROVIDE ( _end = . );
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. = . + _Min_Heap_Size;
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. = . + _Min_Stack_Size;
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. = ALIGN(8);
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} >RAM
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. = ALIGN(8); /* 8字节对齐 */
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PROVIDE ( end = . ); /* 程序结束地址 */
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PROVIDE ( _end = . ); /* 程序结束地址(兼容符号) */
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. = . + _Min_Heap_Size; /* 堆空间 */
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. = . + _Min_Stack_Size; /* 栈空间 */
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. = ALIGN(8); /* 8字节对齐 */
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} >RAM /* 放入 RAM 区域 */
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/* RxDecripSection and TxDecripSection for Ethernet DMA */
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.RxDecripSection (NOLOAD) : { *(.RxDecripSection) } >RAM
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.TxDecripSection (NOLOAD) : { *(.TxDecripSection) } >RAM
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.RxArraySection (NOLOAD) : { *(.RxArraySection) } >RAM
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.TxArraySection (NOLOAD) : { *(.TxArraySection) } >RAM
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/* 以太网 DMA 相关段 */
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.RxDecripSection (NOLOAD) : { *(.RxDecripSection) } >RAM /* 接收描述符段 */
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.TxDecripSection (NOLOAD) : { *(.TxDecripSection) } >RAM /* 发送描述符段 */
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.RxArraySection (NOLOAD) : { *(.RxArraySection) } >RAM /* 接收数组段 */
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.TxArraySection (NOLOAD) : { *(.TxArraySection) } >RAM /* 发送数组段 */
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. = ALIGN(4);
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__heap_start__ = .;
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/* 堆起始地址 */
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. = ALIGN(4); /* 4字节对齐 */
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__heap_start__ = .; /* 堆开始地址 */
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__heap_end__ = _estack; /* 堆结束地址(栈顶) */
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/* Remove information from the standard libraries */
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/* ------------------------------------------- */
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/* 特殊段处理 */
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/* ------------------------------------------- */
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/* 从标准库中移除信息 */
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/DISCARD/ :
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{
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libc.a ( * )
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libm.a ( * )
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libgcc.a ( * )
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libc.a ( * ) /* 移除 libc 库信息 */
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libm.a ( * ) /* 移除 libm 库信息 */
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libgcc.a ( * ) /* 移除 libgcc 库信息 */
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}
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/* ARM 属性段 */
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.ARM.attributes 0 : { *(.ARM.attributes) }
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}
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/* =========================================== */
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/* 链接脚本结束 */
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/* =========================================== */
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