diff --git a/bsp/lpc178x/lpc17xx_rom.ld b/bsp/lpc178x/lpc17xx_rom.ld
new file mode 100644
index 0000000000..872f55dd9f
--- /dev/null
+++ b/bsp/lpc178x/lpc17xx_rom.ld
@@ -0,0 +1,133 @@
+/*
+ * linker script for LPC1788 (512kB Flash, 48kB + 48kB SRAM ) with GNU ld
+ * yiyue.fang 2012-04-14
+ */
+
+/* Program Entry, set to mark it as "used" and avoid gc */
+MEMORY
+{
+    CODE (rx) : ORIGIN = 0x00000000, LENGTH = 0x00080000
+    DATA (rw) : ORIGIN = 0x10000000, LENGTH = 0x00010000
+}
+ENTRY(Reset_Handler)
+_system_stack_size = 0x200;
+
+SECTIONS
+{
+    .text :
+    {
+        . = ALIGN(4);
+        KEEP(*(.interrupt_vector))      /* Startup code */
+        . = ALIGN(4);
+        *(.text)                        /* remaining code */
+        *(.text.*)                      /* remaining code */
+        *(.rodata)                      /* read-only data (constants) */
+        *(.rodata*)
+        *(.glue_7)
+        *(.glue_7t)
+        *(.gnu.linkonce.t*)
+
+        /* section information for finsh shell */
+        . = ALIGN(4);
+        __fsymtab_start = .;
+        KEEP(*(FSymTab))
+        __fsymtab_end = .;
+        . = ALIGN(4);
+        __vsymtab_start = .;
+        KEEP(*(VSymTab))
+        __vsymtab_end = .;
+        . = ALIGN(4);
+
+        . = ALIGN(4);
+        _etext = .;
+    } > CODE = 0
+
+    /* .ARM.exidx is sorted, so has to go in its own output section.  */
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+
+        /* This is used by the startup in order to initialize the .data secion */
+        _sidata = .;
+    } > CODE
+    __exidx_end = .;
+
+    /* .data section which is used for initialized data */
+
+    .data : AT (_sidata)
+    {
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .data secion */
+        _sdata = . ;
+
+        *(.data)
+        *(.data.*)
+        *(.gnu.linkonce.d*)
+
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .data secion */
+        _edata = . ;
+    } >DATA
+
+	.stack : 
+	{
+		. = . + _system_stack_size;
+		. = ALIGN(4);
+		_estack = .;
+	} >DATA
+
+    __bss_start = .;
+    .bss :
+    {
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .bss secion */
+        _sbss = .;
+
+        *(.bss)
+        *(.bss.*)
+        *(COMMON)
+
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .bss secion */
+        _ebss = . ;        
+        *(.bss.init)
+    } > DATA
+    __bss_end = .;
+
+    _end = .;
+
+    /* Stabs debugging sections.  */
+    .stab          0 : { *(.stab) }
+    .stabstr       0 : { *(.stabstr) }
+    .stab.excl     0 : { *(.stab.excl) }
+    .stab.exclstr  0 : { *(.stab.exclstr) }
+    .stab.index    0 : { *(.stab.index) }
+    .stab.indexstr 0 : { *(.stab.indexstr) }
+    .comment       0 : { *(.comment) }
+    /* DWARF debug sections.
+     * Symbols in the DWARF debugging sections are relative to the beginning
+     * of the section so we begin them at 0.  */
+    /* DWARF 1 */
+    .debug          0 : { *(.debug) }
+    .line           0 : { *(.line) }
+    /* GNU DWARF 1 extensions */
+    .debug_srcinfo  0 : { *(.debug_srcinfo) }
+    .debug_sfnames  0 : { *(.debug_sfnames) }
+    /* DWARF 1.1 and DWARF 2 */
+    .debug_aranges  0 : { *(.debug_aranges) }
+    .debug_pubnames 0 : { *(.debug_pubnames) }
+    /* DWARF 2 */
+    .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
+    .debug_abbrev   0 : { *(.debug_abbrev) }
+    .debug_line     0 : { *(.debug_line) }
+    .debug_frame    0 : { *(.debug_frame) }
+    .debug_str      0 : { *(.debug_str) }
+    .debug_loc      0 : { *(.debug_loc) }
+    .debug_macinfo  0 : { *(.debug_macinfo) }
+    /* SGI/MIPS DWARF 2 extensions */
+    .debug_weaknames 0 : { *(.debug_weaknames) }
+    .debug_funcnames 0 : { *(.debug_funcnames) }
+    .debug_typenames 0 : { *(.debug_typenames) }
+    .debug_varnames  0 : { *(.debug_varnames) }
+}
diff --git a/bsp/mini4020/rtconfig.py b/bsp/mini4020/rtconfig.py
index 2e2fb3c4eb..b0002ddf9c 100644
--- a/bsp/mini4020/rtconfig.py
+++ b/bsp/mini4020/rtconfig.py
@@ -3,6 +3,7 @@ import os
 # toolchains options
 ARCH     = 'arm'
 CPU      = 'sep4020'
+TextBase = '0x30100000'
 
 CROSS_TOOL 	= 'keil'
 
@@ -10,8 +11,10 @@ if os.getenv('RTT_CC'):
 	CROSS_TOOL = os.getenv('RTT_CC')
 
 if  CROSS_TOOL == 'gcc':
-	PLATFORM 	= 'gcc'
-	EXEC_PATH 	= 'E:/Program Files/CodeSourcery/Sourcery G++ Lite/bin'
+    print '================ERROR============================'
+    print 'Not support iar yet!'
+    print '================================================='
+    exit(0)
 elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'c:/Keil'
@@ -41,7 +44,7 @@ if PLATFORM == 'gcc':
     DEVICE = ' -mcpu=arm720t'
     CFLAGS = DEVICE
     AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp' + ' -DTEXT_BASE=' + TextBase
-    LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread_mini4020.map,-cref,-u,_start -T mini4020_ram.ld' + ' -Ttext ' + TextBase
+    LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread_mini4020.map,-cref,-u,_start -T mini4020_rom.ld' + ' -Ttext ' + TextBase
 
     CPATH = ''
     LPATH = ''
diff --git a/bsp/mini4020/startup.c b/bsp/mini4020/startup.c
index 7b21ec4fc3..f4ff6822fb 100644
--- a/bsp/mini4020/startup.c
+++ b/bsp/mini4020/startup.c
@@ -15,9 +15,10 @@
 
 #define SDRAM_BASE	0x30000000
 
-
 #ifdef __CC_ARM
 extern int Image$$RW_RAM1$$ZI$$Limit;
+#elif (defined (__GNUC__))
+	extern unsigned char __bss_end;
 #endif
 
 extern void rt_application_init(void);
diff --git a/bsp/stm32f40x/stm32_rom.sct b/bsp/stm32f40x/stm32_rom.sct
new file mode 100644
index 0000000000..0d7c47992d
--- /dev/null
+++ b/bsp/stm32f40x/stm32_rom.sct
@@ -0,0 +1,15 @@
+; *************************************************************
+; *** Scatter-Loading Description File generated by uVision ***
+; *************************************************************
+
+LR_IROM1 0x08000000 0x00100000  {    ; load region size_region
+  ER_IROM1 0x08000000 0x00100000  {  ; load address = execution address
+   *.o (RESET, +First)
+   *(InRoot$$Sections)
+   .ANY (+RO)
+  }
+  RW_IRAM1 0x20000000 0x00020000  {  ; RW data
+   .ANY (+RW +ZI)
+  }
+}
+