diff --git a/bsp/lm4f232/Libraries/SConscript b/bsp/lm4f232/Libraries/SConscript
index 784d61658a480b8d43bb9365bc88033933ae7ad6..1b6d3c0a23b79a8eda6d485b41c4e96f11ac3f12 100644
--- a/bsp/lm4f232/Libraries/SConscript
+++ b/bsp/lm4f232/Libraries/SConscript
@@ -12,7 +12,7 @@ if rtconfig.PART_TYPE.startswith('PART_LM4F') != True:
 
 # add for startup script 
 if rtconfig.CROSS_TOOL == 'gcc':
-	src += ['startup/gcc/start_gcc.s']
+	src += ['startup/gcc/start_gcc.c']
 elif rtconfig.CROSS_TOOL == 'keil':
 	src += ['startup/arm/start_rvds.S']
 elif rtconfig.CROSS_TOOL == 'iar':
@@ -21,6 +21,9 @@ elif rtconfig.CROSS_TOOL == 'iar':
 CPPPATH = [cwd]
 
 CPPDEFINES = [rtconfig.PART_TYPE]
+if rtconfig.CROSS_TOOL == 'gcc':
+	CPPDEFINES += ['gcc'];
+
 group = DefineGroup('Libraries', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
 
 Return('group')
diff --git a/bsp/lm4f232/Libraries/startup/gcc/start_gcc.c b/bsp/lm4f232/Libraries/startup/gcc/start_gcc.c
index 0cfa44c6243c77cdef77bdd3c802c3357c226152..cca7508b502db1bf6fced085387ad33fd6184be7 100644
--- a/bsp/lm4f232/Libraries/startup/gcc/start_gcc.c
+++ b/bsp/lm4f232/Libraries/startup/gcc/start_gcc.c
@@ -32,6 +32,11 @@ static void NmiSR(void);
 static void FaultISR(void);
 static void IntDefaultHandler(void);
 
+/* RT-Thread interface */
+static void HardFault_Handler(void);
+static void PendSV_Handler(void);
+static void rt_hw_timer_handler(void);
+
 //*****************************************************************************
 //
 // The entry point for the application.
@@ -59,7 +64,7 @@ void (* const g_pfnVectors[])(void) =
                                             // The initial stack pointer
     ResetISR,                               // The reset handler
     NmiSR,                                  // The NMI handler
-    FaultISR,                               // The hard fault handler
+    HardFault_Handler,                      // The hard fault handler
     IntDefaultHandler,                      // The MPU fault handler
     IntDefaultHandler,                      // The bus fault handler
     IntDefaultHandler,                      // The usage fault handler
@@ -70,8 +75,8 @@ void (* const g_pfnVectors[])(void) =
     IntDefaultHandler,                      // SVCall handler
     IntDefaultHandler,                      // Debug monitor handler
     0,                                      // Reserved
-    IntDefaultHandler,                      // The PendSV handler
-    IntDefaultHandler,                      // The SysTick handler
+    PendSV_Handler,                         // The PendSV handler
+    rt_hw_timer_handler,                    // The SysTick handler
     IntDefaultHandler,                      // GPIO Port A
     IntDefaultHandler,                      // GPIO Port B
     IntDefaultHandler,                      // GPIO Port C
diff --git a/bsp/lm4f232/lm4f_rom.ld b/bsp/lm4f232/lm4f_rom.ld
new file mode 100644
index 0000000000000000000000000000000000000000..2f9cc1d96299e846386ea6de407709f8e694cf31
--- /dev/null
+++ b/bsp/lm4f232/lm4f_rom.ld
@@ -0,0 +1,73 @@
+/******************************************************************************
+ *
+ * lm4f_rom.ld - Linker configuration file for project.
+ *
+ * Copyright (c) 2011 Texas Instruments Incorporated.  All rights reserved.
+ * Software License Agreement
+ * 
+ * Texas Instruments (TI) is supplying this software for use solely and
+ * exclusively on TI's microcontroller products. The software is owned by
+ * TI and/or its suppliers, and is protected under applicable copyright
+ * laws. You may not combine this software with "viral" open-source
+ * software in order to form a larger program.
+ * 
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
+ * NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
+ * NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
+ * CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
+ * DAMAGES, FOR ANY REASON WHATSOEVER.
+ * 
+ * This is part of revision 8264 of the EK-LM4F232 Firmware Package.
+ *
+ *****************************************************************************/
+
+/* Program Entry, set to mark it as "used" and avoid gc */
+MEMORY
+{
+    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00040000
+    SRAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+SECTIONS
+{
+    .text :
+    {
+        _text = .;
+        KEEP(*(.isr_vector))
+        *(.text*)
+        *(.rodata*)
+        _etext = .;
+
+        /* section information for finsh shell */
+        . = ALIGN(4);
+        __fsymtab_start = .;
+        KEEP(*(FSymTab))
+        __fsymtab_end = .;
+        . = ALIGN(4);
+        __vsymtab_start = .;
+        KEEP(*(VSymTab))
+        __vsymtab_end = .;
+        . = ALIGN(4);
+
+	} > FLASH
+
+    .data : AT(ADDR(.text) + SIZEOF(.text))
+    {
+        _data = .;
+        *(vtable)
+        *(.data*)
+        _edata = .;
+    } > SRAM
+
+    .bss :
+    {
+        _bss = .;
+        *(.bss*)
+        *(COMMON)
+        _ebss = .;
+    } > SRAM
+
+    __bss_end = .;
+
+}