关于IAR for ARM的.icf文件
用IAR EWARM开发S3C2440A裸机程序，程序下载到Nand Flash，想实现程序先在内部4KB RAM中运行初始化代码，将Nand Flash中的程序拷贝到外部SDRAM后，代码开始跳转到SDRAM中执行。据我研究，需要配置连接器配置文件（.icf），但是一直没有成功，请教大伙帮帮忙呀！如下是我的.icf文件：
/*###ICF### Section handled by ICF editor, don't touch! ****/
/*-Editor annotation file-*/
/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\a_v1_0.xml" */
/*-Specials-*/
define symbol __ICFEDIT_intvec_start__ = 0x0000;
/*-Memory Regions-*/
define symbol __ICFEDIT_region_ROM_start__ = 0x0000;
define symbol __ICFEDIT_region_ROM_end__ = 0x0FFFFFFF;
define symbol __ICFEDIT_region_RAM_start__ = 0x30000000;
define symbol __ICFEDIT_region_RAM_end__ = 0x33FFFFFF;
/*-Sizes-*/
define symbol __ICFEDIT_size_cstack__ = 0x2000;
define symbol __ICFEDIT_size_svcstack__ = 0x100;
define symbol __ICFEDIT_size_irqstack__ = 0x100;
define symbol __ICFEDIT_size_fiqstack__ = 0x100;
define symbol __ICFEDIT_size_undstack__ = 0x100;
define symbol __ICFEDIT_size_abtstack__ = 0x100;
define symbol __ICFEDIT_size_heap__ = 0x8000;
/**** End of ICF editor section. ###ICF###*/
/* Internal RAM symbol define ------------------------------------------------*/
/* Internal RAM symbol define ------------------------------------------------*/
/*-Specials-*/
define symbol __IRAM_intvec_start__ = 0x0000;
/*-Memory Regions-*/
define symbol __IRAM_region_ROM_start__ = 0x0000;
define symbol __IRAM_region_ROM_end__ = 0x02000000;
define symbol __IRAM_region_RAM_start__ = 0x0000;
define symbol __IRAM_region_RAM_end__ = 0x1000;
/*-Sizes-*/
define symbol __IRAM_size_cstack__ = 0x10;
define symbol __IRAM_size_svcstack__ = 0x8;
define symbol __IRAM_size_irqstack__ = 0x8;
define symbol __IRAM_size_fiqstack__ = 0x8;
define symbol __IRAM_size_undstack__ = 0x8;
define symbol __IRAM_size_abtstack__ = 0x8;
define symbol __IRAM_size_heap__ = 0x40;
/* Internal RAM symbol define --------------------END-------------------------*/
/* Internal RAM symbol define --------------------END-------------------------*/
define memory mem with size = 4G;
define region ROM_region = mem:;
define region RAM_region = mem:;
define block CSTACK with alignment = 8, size = __ICFEDIT_size_cstack__ { };
define block SVC_STACK with alignment = 8, size = __ICFEDIT_size_svcstack__ { };
define block IRQ_STACK with alignment = 8, size = __ICFEDIT_size_irqstack__ { };
define block FIQ_STACK with alignment = 8, size = __ICFEDIT_size_fiqstack__ { };
define block UND_STACK with alignment = 8, size = __ICFEDIT_size_undstack__ { };
define block ABT_STACK with alignment = 8, size = __ICFEDIT_size_abtstack__ { };
define block HEAP with alignment = 8, size = __ICFEDIT_size_heap__ { };
define region IRAM_RAM_region = mem:;
define block IRAM_CSTACK with alignment = 8, size = __IRAM_size_cstack__ { };
define block IRAM_SVC_STACK with alignment = 8, size = __IRAM_size_svcstack__ { };
define block IRAM_IRQ_STACK with alignment = 8, size = __IRAM_size_irqstack__ { };
define block IRAM_FIQ_STACK with alignment = 8, size = __IRAM_size_fiqstack__ { };
define block IRAM_UND_STACK with alignment = 8, size = __IRAM_size_undstack__ { };
define block IRAM_ABT_STACK with alignment = 8, size = __IRAM_size_abtstack__ { };
define block IRAM_HEAP with alignment = 8, size = __IRAM_size_heap__ { };
initialize by copy { readwrite };
//initialize by copy with packing = none { section __DLIB_PERTHREAD }; // Required in a multi-threaded application
do not initialize{ section .noinit };
place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
place at start of ROM_region { readonly section .cstart }; // Place Startup Code at start of ROM
place in ROM_region { readonly }; // Place Other Code in ROM
place in IRAM_RAM_region { readwrite section .cstart,// Place Startup readwrite section in Internal RAM
block IRAM_CSTACK, block IRAM_SVC_STACK, block IRAM_IRQ_STACK, block IRAM_FIQ_STACK,
block IRAM_UND_STACK, block IRAM_ABT_STACK, block IRAM_HEAP };
place in RAM_region { readwrite, // Place Other readwrite section in External SDRAM
block CSTACK, block SVC_STACK, block IRQ_STACK, block FIQ_STACK,
block UND_STACK, block ABT_STACK, block HEAP }; 补充：我通过位于NOR Flash中的U-Boot启动，把代码下载到Nand Flash，2440没能达到预期的效果（LED亮）；通过J-Link调试发现PC一直没能跳转到SDRAM（0x30000000）中，虽然能够达到预期效果（LED亮）。
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