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基于Luminary远程在线升级解决方案

//*****************************************************************************
//
// startup_ewarm.c - Startup code for use with IAR's Embedded Workbench,
//                   version 5.
//
// Copyright (c) 2005-2008 Luminary Micro, Inc.  All rights reserved.
// 
// Software License Agreement
// 
// Luminary Micro, Inc. (LMI) is supplying this software for use solely and
// exclusively on LMI's microcontroller products.
// 
// The software is owned by LMI and/or its suppliers, and is protected under
// applicable copyright laws.  All rights are reserved.  You may not combine
// this software with "viral" open-source software in order to form a larger
// program.  Any use in violation of the foregoing restrictions may subject
// the user to criminal sanctions under applicable laws, as well as to civil
// liability for the breach of the terms and conditions of this license.
// 
// THIS SOFTWARE IS PROVIDED "AS IS".  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.
// LMI SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
// CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
// 
// This is part of revision 2752 of the Stellaris Peripheral Driver Library.
//
//*****************************************************************************
#include "config.h"
//*****************************************************************************
//
// Enable the IAR extensions for this source file.
//
//*****************************************************************************
#pragma language=extended

//*****************************************************************************
//
// Forward declaration of the default fault handlers.
//
//*****************************************************************************

//*****************************************************************************
//
// External declarations for the interrupt handlers used by the application.
//
//*****************************************************************************
extern void UART0_ISR(void);
extern void Timer0A_ISR(void);
//*****************************************************************************
//
// The entry point for the application startup code.
//
//*****************************************************************************


//*****************************************************************************
//
// Reserve space for the system stack.
//
//*****************************************************************************
static unsigned long pulStack[64] @ ".noinit";

//*****************************************************************************
//
// The vector table.  Note that the proper constructs must be placed on this to
// ensure that it ends up at physical address 0x0000.0000.
//
//*****************************************************************************
// boot的原始向量表，地址为0x00000000
__root const uVectorEntry __vector_table[64] @ ".intvec" =
{
    { .ulPtr = (unsigned long)pulStack + sizeof(pulStack) },
                                            // The initial stack pointer
    Rest_Handle,                            // The reset handler
    NmiSR,                                  // The NMI handler
    FaultISR,                               // The hard fault handler
    IntDefaultHandler,                      // The MPU fault handler
    IntDefaultHandler,                      // The bus fault handler
    IntDefaultHandler,                      // The usage fault handler
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    IntDefaultHandler,                      // SVCall handler
    IntDefaultHandler,                      // Debug monitor handler
    0,                                      // Reserved
    IntDefaultHandler,                      // The PendSV handler
    IntDefaultHandler,                      // The SysTick handler
    IntDefaultHandler,                      // GPIO Port A
    IntDefaultHandler,                      // GPIO Port B
    IntDefaultHandler,                      // GPIO Port C
    IntDefaultHandler,                      // GPIO Port D
    IntDefaultHandler,                      // GPIO Port E
    UART0_ISR,                      // UART0 Rx and Tx
    IntDefaultHandler,                      // UART1 Rx and Tx
    IntDefaultHandler,                      // SSI0 Rx and Tx
    IntDefaultHandler,                      // I2C0 Master and Slave
    IntDefaultHandler,                      // PWM Fault
    IntDefaultHandler,                      // PWM Generator 0
    IntDefaultHandler,                      // PWM Generator 1
    IntDefaultHandler,                      // PWM Generator 2
    IntDefaultHandler,                      // Quadrature Encoder 0
    IntDefaultHandler,                      // ADC Sequence 0
    IntDefaultHandler,                      // ADC Sequence 1
    IntDefaultHandler,                      // ADC Sequence 2
    IntDefaultHandler,                      // ADC Sequence 3
    IntDefaultHandler,                      // Watchdog timer
    Timer0A_ISR,                      // Timer 0 subtimer A
    IntDefaultHandler,                      // Timer 0 subtimer B
    IntDefaultHandler,                      // Timer 1 subtimer A
    IntDefaultHandler,                      // Timer 1 subtimer B
    IntDefaultHandler,                      // Timer 2 subtimer A
    IntDefaultHandler,                      // Timer 2 subtimer B
    IntDefaultHandler,                      // Analog Comparator 0
    IntDefaultHandler,                      // Analog Comparator 1
    IntDefaultHandler,                      // Analog Comparator 2
    IntDefaultHandler,                      // System Control (PLL, OSC, BO)
    IntDefaultHandler,                      // FLASH Control
    IntDefaultHandler,                      // GPIO Port F
    IntDefaultHandler,                      // GPIO Port G
    IntDefaultHandler,                      // GPIO Port H
    IntDefaultHandler,                      // UART2 Rx and Tx
    IntDefaultHandler,                      // SSI1 Rx and Tx
    IntDefaultHandler,                      // Timer 3 subtimer A
    IntDefaultHandler,                      // Timer 3 subtimer B
    IntDefaultHandler,                      // I2C1 Master and Slave
    IntDefaultHandler,                      // Quadrature Encoder 1
    IntDefaultHandler,                      // CAN0
    IntDefaultHandler,                      // CAN1
    IntDefaultHandler,                      // CAN2
    IntDefaultHandler,                      // Ethernet
    IntDefaultHandler                       // Hibernate
};

//*****************************************************************************
//
// This is the code that gets called when the processor receives a NMI.  This
// simply enters an infinite loop, preserving the system state for examination
// by a debugger.
//
//*****************************************************************************
void
NmiSR(void)
{
    //
    // Enter an infinite loop.
    //
    while(1)
    {
    }
}

//*****************************************************************************
//
// This is the code that gets called when the processor receives a fault
// interrupt.  This simply enters an infinite loop, preserving the system state
// for examination by a debugger.
//
//*****************************************************************************
void
FaultISR(void)
{
    //
    // Enter an infinite loop.
    //
    while(1)
    {
    }
}

//*****************************************************************************
//
// 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.
//
//*****************************************************************************
void
IntDefaultHandler(void)
{
    //
    // Go into an infinite loop.
    //
    while(1)
    {
    }
}
/*********************************************************************************************************
** 函数名称: OperMSP
** 功能描述: 更改主堆栈指针地址
** 入口参数: 无
** 出口参数: 无
********************************************************************************************************/
void ModifeMSP(unsigned long Address)
{
  __asm("  ldr r0,[r0]\n"                                               /* 获取应用程序区的主堆栈指针值 */
        "  msr msp,r0");                                                /* 修改主堆栈指针值             */
}
/*********************************************************************************************************
** 函数名称: Rest_Handle
** 功能描述: BootLoader的复位处理函数
** 入口参数: 无
** 出口参数: 无
********************************************************************************************************/
void Rest_Handle(void)
{
  void (*UserProgram)();                                                /* 定义一个函数指针             */   					
  if(HWREG(UpdateFlag) == Low_Flag) {
    HWREG(UpdateFlag) = 0x000000000;                                    /* 清除程序标志区               */
    UserProgram = (void (*)())(HWREG(LOW_Addr+4));                      /* 获取LOW区的                  */
                                                                        /* __iar_program_start()的地址  */
    ModifeMSP(LOW_Addr);                                                /* 改写MSP                      */
    HWREG(NVIC_VTABLE) = LOW_Addr;                                      /* 切换向量表                   */
    (*UserProgram)();                                                   /* 运行LOW区的                  */
                                                                        /* __iar_program_start();       */
  } else if(HWREG(UpdateFlag) == High_Flag) {
    
    HWREG(UpdateFlag) = 0x000000000;
    UserProgram = (void (*)())(HWREG(HIGH_Addr+4));                     /* 获取HIGH区的                 */
                                                                        /* __iar_program_start()的地址  */
    ModifeMSP(HIGH_Addr);                                               /* 改写MSP                      */
    HWREG(NVIC_VTABLE) = HIGH_Addr;                                     /* 切换向量表                   */
    (*UserProgram)();                                                   /* 运行HIGH区的                 */
                                                                        /* __iar_program_start();       */
  }
  __iar_program_start();                                                /* 运行BootLoader的             */
}
/*********************************************************************************************************
**                            End Of File
********************************************************************************************************/