Port to gcc and fix keil project

7 files changed, 299 insertions, 466 deletions

diff --git a/bsp/nuvoton_m05x/Libraries/CMSIS/Nuvoton/M051Series/Source/GCC/startup_M051Series.s b/bsp/nuvoton_m05x/Libraries/CMSIS/Nuvoton/M051Series/Source/GCC/startup_M051Series.s
new file mode 100644
index 0000000000..d59bf9570f
--- /dev/null
+++ b/bsp/nuvoton_m05x/Libraries/CMSIS/Nuvoton/M051Series/Source/GCC/startup_M051Series.s
@@ -0,0 +1,275 @@
+/**
+  ******************************************************************************
+  * @file      startup_M051Series.s
+  * @author    RT-Thread Develop Team
+  * @version   V1.0.0
+  * @date      2014-11-24
+  * @brief     M051Series Devices vector table for GCC toolchain.
+  *            This module performs:
+  *                - Set the initial SP
+  *                - Set the initial PC == Reset_Handler,
+  *                - Set the vector table entries with the exceptions ISR address
+  *                - Branches to main in the C library (which eventually
+  *                  calls main()).
+  *            After Reset the Cortex-M0 processor is in Thread mode,
+  *            priority is Privileged, and the Stack is set to Main.
+  ******************************************************************************
+*/
+    
+  .syntax unified
+  .cpu cortex-m0
+  .fpu softvfp
+  .thumb
+
+.global g_pfnVectors
+.global Default_Handler
+
+/* start address for the initialization values of the .data section. 
+defined in linker script */
+.word _sidata
+/* start address for the .data section. defined in linker script */  
+.word _sdata
+/* end address for the .data section. defined in linker script */
+.word _edata
+/* start address for the .bss section. defined in linker script */
+.word _sbss
+/* end address for the .bss section. defined in linker script */
+.word _ebss
+
+/**
+ * @brief  This is the code that gets called when the processor first
+ *          starts execution following a reset event. Only the absolutely
+ *          necessary set is performed, after which the application
+ *          supplied main() routine is called. 
+ * @param  None
+ * @retval : None
+*/
+
+    .section .text.Reset_Handler
+  .weak Reset_Handler
+  .type Reset_Handler, %function
+Reset_Handler:
+
+  /* Unlock Register */
+  ldr     r0, =0x50000100
+  ldr     r1, =0x59
+  str     r1, [R0]
+  ldr     r1, =0x16
+  str     r1, [R0]
+  ldr     r1, =0x88
+  str     r1, [r0]
+
+  /* Init POR */
+  ldr     r2, =0x50000024
+  ldr     r1, =0x00005AA5
+  str     r1, [r2]
+
+  /* Lock register */
+  movs r1, #0
+  str r1, [r0] 
+
+  /* Copy the data segment initializers from flash to SRAM */  
+  movs r1, #0
+  b LoopCopyDataInit
+
+CopyDataInit:
+  ldr r3, =_sidata
+  ldr r3, [r3, r1]
+  str r3, [r0, r1]
+  adds r1, r1, #4
+    
+LoopCopyDataInit:
+  ldr r0, =_sdata
+  ldr r3, =_edata
+  adds r2, r0, r1
+  cmp r2, r3
+  bcc CopyDataInit
+  ldr r2, =_sbss
+  b LoopFillZerobss
+/* Zero fill the bss segment. */  
+FillZerobss:
+  movs r3, #0
+  str r3, [r2, #4]
+  adds r2, r2, #4
+    
+LoopFillZerobss:
+  ldr r3, = _ebss
+  cmp r2, r3
+  bcc FillZerobss
+  /* Call the clock system intitialization function.*/
+  bl  SystemInit
+  /* Call the application's entry point.*/
+  bl main
+  bx lr
+.size Reset_Handler, .-Reset_Handler
+
+/**
+ * @brief  This is the code that gets called when the processor receives an 
+ *         unexpected interrupt.  This simply enters an infinite loop, preserving
+ *         the system state for examination by a debugger.
+ *
+ * @param  None
+ * @retval None
+*/
+    .section .text.Default_Handler,"ax",%progbits
+Default_Handler:
+Infinite_Loop:
+  b Infinite_Loop
+  .size Default_Handler, .-Default_Handler
+/*******************************************************************************
+*
+* The minimal vector table for a Cortex M0. Note that the proper constructs
+* must be placed on this to ensure that it ends up at physical address
+* 0x0000.0000.
+*******************************************************************************/
+  .section .isr_vector,"a",%progbits
+  .type g_pfnVectors, %object
+  .size g_pfnVectors, .-g_pfnVectors
+
+
+g_pfnVectors:
+  .word _estack
+  .word Reset_Handler
+  .word NMI_Handler
+  .word HardFault_Handler
+  .word 0
+  .word 0
+  .word 0
+  .word 0
+  .word 0
+  .word 0
+  .word 0
+  .word SVC_Handler
+  .word 0
+  .word 0
+  .word PendSV_Handler
+  .word SysTick_Handler
+  /* External Interrupts */
+  /* maximum of 32 External Interrupts are possible */
+  .word BOD_IRQHandler  
+  .word WDT_IRQHandler  
+  .word EINT0_IRQHandler
+  .word EINT1_IRQHandler
+  .word GPIOP0P1_IRQHandler 
+  .word GPIOP2P3P4_IRQHandler
+  .word PWMA_IRQHandler 
+  .word PWMB_IRQHandler 
+  .word TMR0_IRQHandler 
+  .word TMR1_IRQHandler 
+  .word TMR2_IRQHandler 
+  .word TMR3_IRQHandler 
+  .word UART0_IRQHandler
+  .word UART1_IRQHandler
+  .word SPI0_IRQHandler 
+  .word SPI1_IRQHandler 
+  .word 0 
+  .word 0 
+  .word I2C0_IRQHandler 
+  .word I2C1_IRQHandler 
+  .word 0 
+  .word 0
+  .word 0 
+  .word 0  
+  .word 0  
+  .word ACMP01_IRQHandler 
+  .word ACMP23_IRQHandler
+  .word 0 
+  .word PWRWU_IRQHandler
+  .word ADC_IRQHandler
+  .word 0  
+  .word RTC_IRQHandler  
+
+/*******************************************************************************
+*
+* Provide weak aliases for each Exception handler to the Default_Handler. 
+* As they are weak aliases, any function with the same name will override 
+* this definition.
+*
+*******************************************************************************/
+    
+  .weak NMI_Handler
+  .thumb_set NMI_Handler,Default_Handler
+
+  .weak HardFault_Handler
+  .thumb_set HardFault_Handler,Default_Handler
+
+  .weak SVC_Handler
+  .thumb_set SVC_Handler,Default_Handler
+
+  .weak PendSV_Handler
+  .thumb_set PendSV_Handler,Default_Handler
+
+  .weak SysTick_Handler
+  .thumb_set SysTick_Handler,Default_Handler
+
+  .weak BOD_IRQHandler
+  .thumb_set BOD_IRQHandler,Default_Handler
+
+  .weak WDT_IRQHandler
+  .thumb_set WDT_IRQHandler,Default_Handler
+  
+  .weak EINT0_IRQHandler
+  .thumb_set EINT0_IRQHandler,Default_Handler
+  
+  .weak EINT1_IRQHandler
+  .thumb_set EINT1_IRQHandler,Default_Handler
+  
+  .weak GPIOP0P1_IRQHandler
+  .thumb_set GPIOP0P1_IRQHandler,Default_Handler
+  
+  .weak GPIOP2P3P4_IRQHandler
+  .thumb_set GPIOP2P3P4_IRQHandler,Default_Handler
+  
+  .weak PWMA_IRQHandler
+  .thumb_set PWMA_IRQHandler,Default_Handler
+  
+  .weak PWMB_IRQHandler
+  .thumb_set PWMB_IRQHandler,Default_Handler
+  
+  .weak TMR0_IRQHandler
+  .thumb_set TMR0_IRQHandler,Default_Handler
+  
+  .weak TMR1_IRQHandler
+  .thumb_set TMR1_IRQHandler,Default_Handler
+  
+  .weak TMR2_IRQHandler
+  .thumb_set TMR2_IRQHandler,Default_Handler
+  
+  .weak TMR3_IRQHandler
+  .thumb_set TMR3_IRQHandler,Default_Handler
+  
+  .weak UART0_IRQHandler
+  .thumb_set UART0_IRQHandler,Default_Handler
+   
+  .weak UART1_IRQHandler
+  .thumb_set UART1_IRQHandler,Default_Handler
+  
+  .weak SPI0_IRQHandler
+  .thumb_set SPI0_IRQHandler,Default_Handler
+  
+  .weak SPI1_IRQHandler
+  .thumb_set SPI1_IRQHandler,Default_Handler
+  
+  .weak I2C0_IRQHandler
+  .thumb_set I2C0_IRQHandler,Default_Handler
+  
+  .weak I2C1_IRQHandler
+  .thumb_set I2C1_IRQHandler,Default_Handler
+  
+  .weak ACMP01_IRQHandler
+  .thumb_set ACMP01_IRQHandler,Default_Handler
+  
+  .weak ACMP23_IRQHandler
+  .thumb_set ACMP23_IRQHandler,Default_Handler
+  
+  .weak PWRWU_IRQHandler
+  .thumb_set PWRWU_IRQHandler,Default_Handler
+  
+  .weak ADC_IRQHandler
+  .thumb_set ADC_IRQHandler,Default_Handler
+  
+  .weak RTC_IRQHandler
+  .thumb_set RTC_IRQHandler,Default_Handler
+
+/************************ END OF FILE ***********************/
+
diff --git a/bsp/nuvoton_m05x/Libraries/SConscript b/bsp/nuvoton_m05x/Libraries/SConscript
index af63c0d710..65758b13d8 100644
--- a/bsp/nuvoton_m05x/Libraries/SConscript
+++ b/bsp/nuvoton_m05x/Libraries/SConscript
@@ -17,15 +17,15 @@ if rtconfig.CROSS_TOOL == 'iar':
      src = src + ['CMSIS/Nuvoton/M051Series/Source/IAR/startup_M051Series.s']
 elif rtconfig.CROSS_TOOL == 'keil':
      src = src + ['CMSIS/Nuvoton/M051Series/Source/ARM/startup_M051Series.s']
-#elif rtconfig.CROSS_TOOL == 'gcc': // not support gcc
-#     src = src + ['CMSIS/ST/STM32F0xx/Source/Templates/gcc_ride7/startup_stm32f0xx.s']
+elif rtconfig.CROSS_TOOL == 'gcc':
+     src = src + ['CMSIS/Nuvoton/M051Series/Source/GCC/startup_M051Series.s']
 
 path = [cwd + '/StdDriver/inc', 
     cwd + '/CMSIS/Nuvoton/M051Series/Include',
     cwd + '/CMSIS/Include']
 
 #CPPDEFINES = ['USE_STDPERIPH_DRIVER', rtconfig.STM32_TYPE]
-CPPDEFINES = ['']
+CPPDEFINES = ['INIT_SYSCLK_AT_BOOTING']
 group = DefineGroup('M05X_StdPeriph', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
 
 Return('group')
diff --git a/bsp/nuvoton_m05x/Libraries/StdDriver/src/retarget.c b/bsp/nuvoton_m05x/Libraries/StdDriver/src/retarget.c
deleted file mode 100644
index e487900e8c..0000000000
--- a/bsp/nuvoton_m05x/Libraries/StdDriver/src/retarget.c
+++ /dev/null
@@ -1,434 +0,0 @@
-/**************************************************************************//**
- * @file     retarget.c
- * @version  V3.00
- * $Revision: 10 $
- * $Date: 14/01/27 11:41a $
- * @brief    M051 Series Debug Port and Semihost Setting Source File
- *
- * @note
- * Copyright (C) 2011 Nuvoton Technology Corp. All rights reserved.
- *
- ******************************************************************************/
-
-
-#include <stdio.h>
-#include "M051Series.h"
-
-#if defined ( __CC_ARM   )
-#if (__ARMCC_VERSION < 400000)
-#else
-/* Insist on keeping widthprec, to avoid X propagation by benign code in C-lib */
-#pragma import _printf_widthprec
-#endif
-#endif
-
-/*---------------------------------------------------------------------------------------------------------*/
-/* Global variables                                                                                        */
-/*---------------------------------------------------------------------------------------------------------*/
-#if !(defined(__ICCARM__) && (__VER__ >= 6010000))
-struct __FILE
-{
-    int handle; /* Add whatever you need here */
-};
-#endif
-FILE __stdout;
-FILE __stdin;
-
-/*---------------------------------------------------------------------------------------------------------*/
-/* Routine to write a char                                                                                 */
-/*---------------------------------------------------------------------------------------------------------*/
-
-#if defined(DEBUG_ENABLE_SEMIHOST)
-/* The static buffer is used to speed up the semihost */
-static char g_buf[16];
-static char g_buf_len = 0;
-
-# if defined(__ICCARM__)
-
-
-/**
- * @brief    This HardFault handler is implemented to support semihost
- *
- * @param    None
- *
- * @returns  None
- *
- * @details  This function is implement to support semihost message print.
- *
- */
-int32_t HardFault_Handler(void)
-{
-    asm("MOV     R0, lr        \n"
-        "LSLS    R0, #29       \n"        //; Check bit 2
-        "BMI     SP_is_PSP     \n"        //; previous stack is PSP
-        "MRS     R0, MSP       \n"        //; previous stack is MSP, read MSP
-        "B       SP_Read_Ready \n"
-        "SP_is_PSP:            \n"
-        "MRS     R0, PSP       \n"        //; Read PSP
-        "SP_Read_Ready:        \n"
-        "LDR     R1, [R0, #24] \n"        //; Get previous PC
-        "LDRH    R3, [R1]      \n"        //; Get instruction
-        "LDR     R2, [pc, #8]  \n"        //; The specific BKPT instruction
-        "CMP     R3, R2        \n"        //; Test if the instruction at previous PC is BKPT
-        "BNE     HardFault_Handler_Ret\n" //; Not BKPT
-        "ADDS    R1, #4        \n"        //; Skip BKPT and next line
-        "STR     R1, [R0, #24] \n"        //; Save previous PC
-        "BX      lr            \n"        //; Return
-        "DCD     0xBEAB        \n"        //; BKPT instruction code
-        "HardFault_Handler_Ret:\n"
-       );
-
-    /* TODO: Implement your own hard fault handler here. */
-    while(1);
-}
-
-/**
- *
- * @brief      The function to process semihosted command
- * @param[in]  n32In_R0  : semihost register 0
- * @param[in]  n32In_R1  : semihost register 1
- * @param[out] pn32Out_R0: semihost register 0
- * @retval     0: No ICE debug
- * @retval     1: ICE debug
- *
- */
-int32_t SH_DoCommand(int32_t n32In_R0, int32_t n32In_R1, int32_t *pn32Out_R0)
-{
-    asm("BKPT   0xAB    \n"       //; This instruction will cause ICE trap or system HardFault
-        "B      SH_ICE  \n"
-        "SH_HardFault:  \n"       //; Captured by HardFault
-        "MOVS   R0, #0  \n"       //; Set return value to 0
-        "BX     lr      \n"       //; Return
-        "SH_ICE:        \n"       //; Captured by ICE
-        "CMP    R2, #0  \n"
-        "BEQ    SH_End  \n"
-        "STR    R0, [R2]\n"       //; Save the return value to *pn32Out_R0
-        "SH_End:        \n");
-
-    return 1;                 //; Return 1 when it is trap by ICE
-
-}
-
-
-# else
-
-/**
- * @brief    This HardFault handler is implemented to support semihost
- *
- * @param    None
- *
- * @returns  None
- *
- * @details  This function is implement to support semihost message print.
- *
- */
-__asm int32_t HardFault_Handler(void)
-{
-
-    MOV     R0, LR
-    LSLS    R0, #29               //; Check bit 2
-    BMI     SP_is_PSP             //; previous stack is PSP
-    MRS     R0, MSP               //; previous stack is MSP, read MSP
-    B       SP_Read_Ready
-SP_is_PSP
-    MRS     R0, PSP               //; Read PSP
-
-SP_Read_Ready
-    LDR     R1, [R0, #24]         //; Get previous PC
-    LDRH    R3, [R1]              //; Get instruction
-    LDR     R2, = 0xBEAB          //; The specific BKPT instruction
-    CMP     R3, R2                //; Test if the instruction at previous PC is BKPT
-    BNE     HardFault_Handler_Ret //; Not BKPT
-    
-    ADDS    R1, #4                //; Skip BKPT and next line
-    STR     R1, [R0, #24]         //; Save previous PC
-    
-    BX      LR                    //; Return
-HardFault_Handler_Ret
-    
-    /* TODO: Implement your own hard fault handler here. */
-    B       .
-    
-    ALIGN
-}
-
-/**
- *
- * @brief      The function to process semihosted command
- * @param[in]  n32In_R0  : semihost register 0
- * @param[in]  n32In_R1  : semihost register 1
- * @param[out] pn32Out_R0: semihost register 0
- * @retval     0: No ICE debug
- * @retval     1: ICE debug
- *
- */
-__asm int32_t SH_DoCommand(int32_t n32In_R0, int32_t n32In_R1, int32_t *pn32Out_R0)
-{
-    BKPT   0xAB          //; Wait ICE or HardFault
-    //; ICE will step over BKPT directly
-    //; HardFault will step BKPT and the next line
-    B      SH_ICE
-
-SH_HardFault             //; Captured by HardFault
-    MOVS   R0, #0        //; Set return value to 0
-    BX     lr            //; Return
-
-SH_ICE                   //; Captured by ICE
-    //; Save return value
-    CMP    R2, #0
-    BEQ    SH_End
-    STR    R0, [R2]      //; Save the return value to *pn32Out_R0
-
-SH_End
-    MOVS   R0, #1        //; Set return value to 1
-    BX     lr            //; Return
-}
-#endif
-#endif
-
-
-/**
- * @brief    Routine to send a char
- *
- * @param    None
- *
- * @returns  Send value from UART debug port
- *
- * @details  Send a target char to UART debug port .
- */
-
-void SendChar_ToUART(int ch)
-{
-
-    while(DEBUG_PORT->FSR & UART_FSR_TX_FULL_Msk);
-    DEBUG_PORT->DATA = ch;
-    if(ch == '\n')
-    {
-        while(DEBUG_PORT->FSR & UART_FSR_TX_FULL_Msk);
-        DEBUG_PORT->DATA = '\r';
-    }
-}
-
-/**
- * @brief    Routine to send a char
- *
- * @param    None
- *
- * @returns  Send value from UART debug port or semihost
- *
- * @details  Send a target char to UART debug port or semihost.
- */
-void SendChar(int ch)
-{
-#if defined(DEBUG_ENABLE_SEMIHOST)
-    g_buf[g_buf_len++] = ch;
-    g_buf[g_buf_len] = '\0';
-    if(g_buf_len + 1 >= sizeof(g_buf) || ch == '\n' || ch == '\0')
-    {
-        /* Send the char */
-        if(SH_DoCommand(0x04, (int)g_buf, NULL) != 0)
-        {
-            g_buf_len = 0;
-            return;
-        }
-        else
-        {
-            int i;
-
-            for(i = 0; i < g_buf_len; i++)
-                SendChar_ToUART(g_buf[i]);
-            g_buf_len = 0;
-        }
-    }
-#else
-    SendChar_ToUART(ch);
-#endif
-}
-
-/**
- * @brief    Routine to get a char
- *
- * @param    None
- *
- * @returns  Get value from UART debug port or semihost
- *
- * @details  Wait UART debug port or semihost to input a char.
- */
-char GetChar(void)
-{
-#ifdef DEBUG_ENABLE_SEMIHOST
-# if defined (__CC_ARM)
-    int nRet;
-    while(SH_DoCommand(0x101, 0, &nRet) != 0)
-    {
-        if(nRet != 0)
-        {
-            SH_DoCommand(0x07, 0, &nRet);
-            return (char)nRet;
-        }
-    }
-# else
-    int nRet;
-    while(SH_DoCommand(0x7, 0, &nRet) != 0)
-    {
-        if(nRet != 0)
-            return (char)nRet;
-    }
-# endif
-    return (0);
-#else
-
-    while(1)
-    {
-        if((DEBUG_PORT->FSR & UART_FSR_RX_EMPTY_Msk) == 0)
-        {
-            return (DEBUG_PORT->DATA);
-        }
-    }
-
-#endif
-}
-
-/**
- * @brief    Check any char input from UART
- *
- * @param    None
- *
- * @retval   1: No any char input
- * @retval   0: Have some char input
- *
- * @details  Check UART RSR RX EMPTY or not to determine if any char input from UART
- */
-
-int kbhit(void)
-{
-    return !((DEBUG_PORT->FSR & UART_FSR_RX_EMPTY_Msk) == 0);
-}
-/**
- * @brief    Check if debug message finished
- *
- * @param    None
- *
- * @retval   1: Message is finished
- * @retval   0: Message is transmitting.
- *
- * @details  Check if message finished (FIFO empty of debug port)
- */
-
-int IsDebugFifoEmpty(void)
-{
-    return ((DEBUG_PORT->FSR & UART_FSR_TE_FLAG_Msk) != 0);
-}
-
-/**
- * @brief    C library retargetting
- *
- * @param    None
- *
- * @returns  None
- *
- * @details  Check if message finished (FIFO empty of debug port)
- */
-
-void _ttywrch(int ch)
-{
-    SendChar(ch);
-    return;
-}
-
-
-/**
- * @brief      Write character to stream
- *
- * @param[in]  ch       Character to be written. The character is passed as its int promotion.
- * @param[in]  stream   Pointer to a FILE object that identifies the stream where the character is to be written.
- *
- * @returns    If there are no errors, the same character that has been written is returned.
- *             If an error occurs, EOF is returned and the error indicator is set (see ferror).
- *
- * @details    Writes a character to the stream and advances the position indicator.\n
- *             The character is written at the current position of the stream as indicated \n
- *             by the internal position indicator, which is then advanced one character.
- *
- * @note       The above descriptions are copied from http://www.cplusplus.com/reference/clibrary/cstdio/fputc/.
- *
- *
- */
-
-int fputc(int ch, FILE *stream)
-{
-    SendChar(ch);
-    return ch;
-}
-
-
-/**
- * @brief      Get character from UART debug port or semihosting input
- *
- * @param[in]  stream   Pointer to a FILE object that identifies the stream on which the operation is to be performed.
- *
- * @returns    The character read from UART debug port or semihosting
- *
- * @details    For get message from debug port or semihosting.
- *
- */
-
-int fgetc(FILE *stream)
-{
-    return (GetChar());
-}
-
-/**
- * @brief      Check error indicator
- *
- * @param[in]  stream   Pointer to a FILE object that identifies the stream.
- *
- * @returns    If the error indicator associated with the stream was set, the function returns a nonzero value.
- *             Otherwise, it returns a zero value.
- *
- * @details    Checks if the error indicator associated with stream is set, returning a value different
- *             from zero if it is. This indicator is generally set by a previous operation on the stream that failed.
- *
- * @note       The above descriptions are copied from http://www.cplusplus.com/reference/clibrary/cstdio/ferror/.
- *
- */
-
-int ferror(FILE *stream)
-{
-    return EOF;
-}
-
-#ifdef DEBUG_ENABLE_SEMIHOST
-# ifdef __ICCARM__
-void __exit(int return_code)
-{
-
-    /* Check if link with ICE */
-    if(SH_DoCommand(0x18, 0x20026, NULL) == 0)
-    {
-        /* Make sure all message is print out */
-        while(IsDebugFifoEmpty() == 0);
-    }
-label:
-    goto label;  /* endless loop */
-}
-# else
-void _sys_exit(int return_code)
-{
-
-    /* Check if link with ICE */
-    if(SH_DoCommand(0x18, 0x20026, NULL) == 0)
-    {
-        /* Make sure all message is print out */
-        while(IsDebugFifoEmpty() == 0);
-    }
-label:
-    goto label;  /* endless loop */
-}
-# endif
-#endif
-
-
-
-
-
diff --git a/bsp/nuvoton_m05x/nuvoton_m05x.ld b/bsp/nuvoton_m05x/nuvoton_m05x.ld
index 6070bf4af6..72cdfe6507 100644
--- a/bsp/nuvoton_m05x/nuvoton_m05x.ld
+++ b/bsp/nuvoton_m05x/nuvoton_m05x.ld
@@ -1,13 +1,13 @@
 /*
- * linker script for STM32F0x with GNU ld
- * bernard.xiong 2009-10-14
+ * linker script for M051X with GNU ld
+ * Bright 2014-11-24
  */
 
 /* Program Entry, set to mark it as "used" and avoid gc */
 MEMORY
 {
-    CODE (rx) : ORIGIN = 0x08000000, LENGTH = 64k /* 64KB flash */
-    DATA (rw) : ORIGIN = 0x20000000, LENGTH =  8k /* 8K sram */
+    CODE (rx) : ORIGIN = 0x00000000, LENGTH = 64k /* 64KB flash */
+    DATA (rw) : ORIGIN = 0x20000000, LENGTH =  4k /* 4K sram */
 }
 ENTRY(Reset_Handler)
 _system_stack_size = 0x100;
diff --git a/bsp/nuvoton_m05x/project.uvprojx b/bsp/nuvoton_m05x/project.uvprojx
index 67cde697ec..8972ab2de9 100644
--- a/bsp/nuvoton_m05x/project.uvprojx
+++ b/bsp/nuvoton_m05x/project.uvprojx
@@ -14,7 +14,7 @@
         <TargetCommonOption>
           <Device>(Generic) M051 Series</Device>
           <Vendor>Nuvoton</Vendor>
-          <Cpu>CLOCK(50000000) CPUTYPE("Cortex-M0")</Cpu>
+          <Cpu>IRAM(0x20000000-0x20000FFF) IROM(0-0xFFFF) CLOCK(50000000) CPUTYPE("Cortex-M0")</Cpu>
           <FlashUtilSpec></FlashUtilSpec>
           <StartupFile>"Startup\Nuvoton\M051Series\startup_M051Series.s" ("Nuvoton M05X Startup Code")</StartupFile>
           <FlashDriverDll></FlashDriverDll>
@@ -29,7 +29,7 @@
           <SLE66CMisc></SLE66CMisc>
           <SLE66AMisc></SLE66AMisc>
           <SLE66LinkerMisc></SLE66LinkerMisc>
-          <SFDFile>SFD\Nuvoton\M05x_v1.SFR</SFDFile>
+          <SFDFile>SFD\Nuvoton\M051AN_v1.SFR</SFDFile>
           <bCustSvd>0</bCustSvd>
           <UseEnv>0</UseEnv>
           <BinPath></BinPath>
@@ -44,14 +44,14 @@
             <NotGenerated>0</NotGenerated>
             <InvalidFlash>1</InvalidFlash>
           </TargetStatus>
-          <OutputDirectory>.\obj\</OutputDirectory>
+          <OutputDirectory>.\build\</OutputDirectory>
           <OutputName>rt-thread</OutputName>
           <CreateExecutable>1</CreateExecutable>
           <CreateLib>0</CreateLib>
           <CreateHexFile>1</CreateHexFile>
           <DebugInformation>1</DebugInformation>
           <BrowseInformation>1</BrowseInformation>
-          <ListingPath>.\lst\</ListingPath>
+          <ListingPath>.\build\</ListingPath>
           <HexFormatSelection>1</HexFormatSelection>
           <Merge32K>0</Merge32K>
           <CreateBatchFile>0</CreateBatchFile>
@@ -207,26 +207,26 @@
             <AdsLsun>1</AdsLsun>
             <AdsLven>1</AdsLven>
             <AdsLsxf>1</AdsLsxf>
-            <RvctClst>0</RvctClst>
-            <GenPPlst>0</GenPPlst>
+            <RvctClst>1</RvctClst>
+            <GenPPlst>1</GenPPlst>
             <AdsCpuType>"Cortex-M0"</AdsCpuType>
             <RvctDeviceName></RvctDeviceName>
             <mOS>0</mOS>
             <uocRom>0</uocRom>
             <uocRam>0</uocRam>
-            <hadIROM>0</hadIROM>
-            <hadIRAM>0</hadIRAM>
+            <hadIROM>1</hadIROM>
+            <hadIRAM>1</hadIRAM>
             <hadXRAM>0</hadXRAM>
             <uocXRam>0</uocXRam>
             <RvdsVP>0</RvdsVP>
             <hadIRAM2>0</hadIRAM2>
             <hadIROM2>0</hadIROM2>
-            <StupSel>0</StupSel>
+            <StupSel>8</StupSel>
             <useUlib>1</useUlib>
             <EndSel>0</EndSel>
             <uLtcg>0</uLtcg>
-            <RoSelD>0</RoSelD>
-            <RwSelD>5</RwSelD>
+            <RoSelD>3</RoSelD>
+            <RwSelD>3</RwSelD>
             <CodeSel>0</CodeSel>
             <OptFeed>0</OptFeed>
             <NoZi1>0</NoZi1>
@@ -482,11 +482,6 @@
               <FilePath>Libraries\StdDriver\src\pwm.c</FilePath>
             </File>
             <File>
-              <FileName>retarget.c</FileName>
-              <FileType>1</FileType>
-              <FilePath>Libraries\StdDriver\src\retarget.c</FilePath>
-            </File>
-            <File>
               <FileName>spi.c</FileName>
               <FileType>1</FileType>
               <FilePath>Libraries\StdDriver\src\spi.c</FilePath>
diff --git a/bsp/nuvoton_m05x/rtconfig.py b/bsp/nuvoton_m05x/rtconfig.py
index 7ebee5ade0..f136d42a93 100644
--- a/bsp/nuvoton_m05x/rtconfig.py
+++ b/bsp/nuvoton_m05x/rtconfig.py
@@ -17,16 +17,13 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'gcc':
-    print '================ERROR============================'
-    print 'Not support gcc yet!'
-    print '================================================='
-    exit(0)
+	PLATFORM 	= 'gcc'
+	EXEC_PATH 	= 'C:/GCC'
 
 if os.getenv('RTT_EXEC_PATH'):
 	EXEC_PATH = os.getenv('RTT_EXEC_PATH')
 
 BUILD = 'debug'
-STM32_TYPE = 'STM32F0XX'
 
 if PLATFORM == 'gcc':
     # toolchains
@@ -35,13 +32,13 @@ if PLATFORM == 'gcc':
     AS = PREFIX + 'gcc'
     AR = PREFIX + 'ar'
     LINK = PREFIX + 'gcc'
-    TARGET_EXT = 'axf'
+    TARGET_EXT = 'elf'
     SIZE = PREFIX + 'size'
     OBJDUMP = PREFIX + 'objdump'
     OBJCPY = PREFIX + 'objcopy'
 
     DEVICE = ' -mcpu=cortex-m0 -mthumb -ffunction-sections -fdata-sections'
-    CFLAGS = DEVICE 
+    CFLAGS = DEVICE + ' -std=gnu9x'
     AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp'
     LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread-nuvoton_m05x.map,-cref,-u,Reset_Handler -T nuvoton_m05x.ld'
 
@@ -54,7 +51,7 @@ if PLATFORM == 'gcc':
     else:
         CFLAGS += ' -O2'
 
-    POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread-nuvoton_m05x.bin\n' + SIZE + ' $TARGET \n'
+    POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread-nuvoton_m05x.bin\n' + OBJCPY + ' -O ihex $TARGET rtthread-nuvoton_m05x.hex\n' + SIZE + ' $TARGET \n'
 
 elif PLATFORM == 'armcc':
     # toolchains
diff --git a/bsp/nuvoton_m05x/template.uvprojx b/bsp/nuvoton_m05x/template.uvprojx
index cdd969a1e9..27ea8e8f54 100644
--- a/bsp/nuvoton_m05x/template.uvprojx
+++ b/bsp/nuvoton_m05x/template.uvprojx
@@ -361,7 +361,7 @@
             <useXO>0</useXO>
             <VariousControls>
               <MiscControls></MiscControls>
-              <Define></Define>
+              <Define>INIT_SYSCLK_AT_BOOTING</Define>
               <Undefine></Undefine>
               <IncludePath></IncludePath>
             </VariousControls>