关于2806x的bootloader

ControlSUITE中关于boot_rom的例程中，在"Shared_Boot.c"中有如下代码：

//#################################################
// void CopyData(void)
//—————————————————–
// This routine copies multiple blocks of data from the host
// to the specified RAM locations. There is no error
// checking on any of the destination addresses.
// That is it is assumed all addresses and block size
// values are correct.
//
// Multiple blocks of data are copied until a block
// size of 00 00 is encountered.
//
//—————————————————–

void CopyData()
{

  struct HEADER {
  Uint16 BlockSize;
  Uint32 DestAddr;
  } BlockHeader;

  Uint16 wordData;
  Uint16 i;

  // Get the size in words of the first block
  BlockHeader.BlockSize = (*GetWordData)();

  // While the block size is > 0 copy the data
  // to the DestAddr. There is no error checking
  // as it is assumed the DestAddr is a valid
  // memory location

  while(BlockHeader.BlockSize != (Uint16)0x0000)
  {
    BlockHeader.DestAddr = GetLongData();
    for(i = 1; i <= BlockHeader.BlockSize; i++)
    {
      wordData = (*GetWordData)();
      *(Uint16 *)BlockHeader.DestAddr++ = wordData;
    }

  // Get the size of the next block
  BlockHeader.BlockSize = (*GetWordData)();
  }
  return;
}

其中，用红色标记的一行，将接收到的数据直接存到目标地址了。

问题是，固化在ROM里的bootloader接收的升级数据不是要存到FLASH里面吗？

如是，为什么不需要调用FLASH的API呢？FLASH在什么情况下可以直接写呢？

Hank Zhao：

bootloader接收的数据是存储在RAM中的，源文件开头的注释中就有说明“ This routine copies multiple blocks of data from the host// to the specified RAM locations.”

ControlSUITE中关于boot_rom的例程中，在"Shared_Boot.c"中有如下代码：

//#################################################
// void CopyData(void)
//—————————————————–
// This routine copies multiple blocks of data from the host
// to the specified RAM locations. There is no error
// checking on any of the destination addresses.
// That is it is assumed all addresses and block size
// values are correct.
//
// Multiple blocks of data are copied until a block
// size of 00 00 is encountered.
//
//—————————————————–

void CopyData()
{

  struct HEADER {
  Uint16 BlockSize;
  Uint32 DestAddr;
  } BlockHeader;

  Uint16 wordData;
  Uint16 i;

  // Get the size in words of the first block
  BlockHeader.BlockSize = (*GetWordData)();

  // While the block size is > 0 copy the data
  // to the DestAddr. There is no error checking
  // as it is assumed the DestAddr is a valid
  // memory location

  while(BlockHeader.BlockSize != (Uint16)0x0000)
  {
    BlockHeader.DestAddr = GetLongData();
    for(i = 1; i <= BlockHeader.BlockSize; i++)
    {
      wordData = (*GetWordData)();
      *(Uint16 *)BlockHeader.DestAddr++ = wordData;
    }

  // Get the size of the next block
  BlockHeader.BlockSize = (*GetWordData)();
  }
  return;
}

其中，用红色标记的一行，将接收到的数据直接存到目标地址了。

问题是，固化在ROM里的bootloader接收的升级数据不是要存到FLASH里面吗？

如是，为什么不需要调用FLASH的API呢？FLASH在什么情况下可以直接写呢？

Steve Zhang1：

回复 Hank Zhao:

哦，是我没看仔细，多谢了哈！

我想要通过CAN进行在线的固件升级，数据size比RAM大，这个例程就不能直接用了。

正常来说，是要把数据一段一段的转存到FLASH里面吧。

如果是的话，设置多大的”段“比较合适呢？

段太长，会丢数据吗？段太短，会浪费空间吗？（FLASH是按section写的吧？）

请有经验的兄弟/姐妹介绍一下！

ControlSUITE中关于boot_rom的例程中，在"Shared_Boot.c"中有如下代码：

//#################################################
// void CopyData(void)
//—————————————————–
// This routine copies multiple blocks of data from the host
// to the specified RAM locations. There is no error
// checking on any of the destination addresses.
// That is it is assumed all addresses and block size
// values are correct.
//
// Multiple blocks of data are copied until a block
// size of 00 00 is encountered.
//
//—————————————————–

void CopyData()
{

  struct HEADER {
  Uint16 BlockSize;
  Uint32 DestAddr;
  } BlockHeader;

  Uint16 wordData;
  Uint16 i;

  // Get the size in words of the first block
  BlockHeader.BlockSize = (*GetWordData)();

  // While the block size is > 0 copy the data
  // to the DestAddr. There is no error checking
  // as it is assumed the DestAddr is a valid
  // memory location

  while(BlockHeader.BlockSize != (Uint16)0x0000)
  {
    BlockHeader.DestAddr = GetLongData();
    for(i = 1; i <= BlockHeader.BlockSize; i++)
    {
      wordData = (*GetWordData)();
      *(Uint16 *)BlockHeader.DestAddr++ = wordData;
    }

  // Get the size of the next block
  BlockHeader.BlockSize = (*GetWordData)();
  }
  return;
}

其中，用红色标记的一行，将接收到的数据直接存到目标地址了。

问题是，固化在ROM里的bootloader接收的升级数据不是要存到FLASH里面吗？

如是，为什么不需要调用FLASH的API呢？FLASH在什么情况下可以直接写呢？

Steve Zhang1：

回复 Hank Zhao:

嗯 是我没看仔细。多谢！

如果我要通过CAN进行固件升级，代码size比RAM大，可以使用这个例程吗？其中修改一下，把RAM里的data转存到FLASH里。

ControlSUITE中关于boot_rom的例程中，在"Shared_Boot.c"中有如下代码：

//#################################################
// void CopyData(void)
//—————————————————–
// This routine copies multiple blocks of data from the host
// to the specified RAM locations. There is no error
// checking on any of the destination addresses.
// That is it is assumed all addresses and block size
// values are correct.
//
// Multiple blocks of data are copied until a block
// size of 00 00 is encountered.
//
//—————————————————–

void CopyData()
{

  struct HEADER {
  Uint16 BlockSize;
  Uint32 DestAddr;
  } BlockHeader;

  Uint16 wordData;
  Uint16 i;

  // Get the size in words of the first block
  BlockHeader.BlockSize = (*GetWordData)();

  // While the block size is > 0 copy the data
  // to the DestAddr. There is no error checking
  // as it is assumed the DestAddr is a valid
  // memory location

  while(BlockHeader.BlockSize != (Uint16)0x0000)
  {
    BlockHeader.DestAddr = GetLongData();
    for(i = 1; i <= BlockHeader.BlockSize; i++)
    {
      wordData = (*GetWordData)();
      *(Uint16 *)BlockHeader.DestAddr++ = wordData;
    }

  // Get the size of the next block
  BlockHeader.BlockSize = (*GetWordData)();
  }
  return;
}

其中，用红色标记的一行，将接收到的数据直接存到目标地址了。

问题是，固化在ROM里的bootloader接收的升级数据不是要存到FLASH里面吗？

如是，为什么不需要调用FLASH的API呢？FLASH在什么情况下可以直接写呢？

Hank Zhao：

回复 Steve Zhang1:

你可以把这部分程序改写成Flash烧写程序，将copy到RAM中的数据再分批烧写到片内Flash。

ControlSUITE中关于boot_rom的例程中，在"Shared_Boot.c"中有如下代码：

//#################################################
// void CopyData(void)
//—————————————————–
// This routine copies multiple blocks of data from the host
// to the specified RAM locations. There is no error
// checking on any of the destination addresses.
// That is it is assumed all addresses and block size
// values are correct.
//
// Multiple blocks of data are copied until a block
// size of 00 00 is encountered.
//
//—————————————————–

void CopyData()
{

  struct HEADER {
  Uint16 BlockSize;
  Uint32 DestAddr;
  } BlockHeader;

  Uint16 wordData;
  Uint16 i;

  // Get the size in words of the first block
  BlockHeader.BlockSize = (*GetWordData)();

  // While the block size is > 0 copy the data
  // to the DestAddr. There is no error checking
  // as it is assumed the DestAddr is a valid
  // memory location

  while(BlockHeader.BlockSize != (Uint16)0x0000)
  {
    BlockHeader.DestAddr = GetLongData();
    for(i = 1; i <= BlockHeader.BlockSize; i++)
    {
      wordData = (*GetWordData)();
      *(Uint16 *)BlockHeader.DestAddr++ = wordData;
    }

  // Get the size of the next block
  BlockHeader.BlockSize = (*GetWordData)();
  }
  return;
}

其中，用红色标记的一行，将接收到的数据直接存到目标地址了。

问题是，固化在ROM里的bootloader接收的升级数据不是要存到FLASH里面吗？

如是，为什么不需要调用FLASH的API呢？FLASH在什么情况下可以直接写呢？

user3900194：

回复 Hank Zhao:

如果自己磁轭bootloader程序，可以在程序中不用调用Flash_Erase\Flash_Program\Flash_Verify函数吗，如何做到的，不理解，希望得到帮助解释谢谢！

ControlSUITE中关于boot_rom的例程中，在"Shared_Boot.c"中有如下代码：

//#################################################
// void CopyData(void)
//—————————————————–
// This routine copies multiple blocks of data from the host
// to the specified RAM locations. There is no error
// checking on any of the destination addresses.
// That is it is assumed all addresses and block size
// values are correct.
//
// Multiple blocks of data are copied until a block
// size of 00 00 is encountered.
//
//—————————————————–

void CopyData()
{

  struct HEADER {
  Uint16 BlockSize;
  Uint32 DestAddr;
  } BlockHeader;

  Uint16 wordData;
  Uint16 i;

  // Get the size in words of the first block
  BlockHeader.BlockSize = (*GetWordData)();

  // While the block size is > 0 copy the data
  // to the DestAddr. There is no error checking
  // as it is assumed the DestAddr is a valid
  // memory location

  while(BlockHeader.BlockSize != (Uint16)0x0000)
  {
    BlockHeader.DestAddr = GetLongData();
    for(i = 1; i <= BlockHeader.BlockSize; i++)
    {
      wordData = (*GetWordData)();
      *(Uint16 *)BlockHeader.DestAddr++ = wordData;
    }

  // Get the size of the next block
  BlockHeader.BlockSize = (*GetWordData)();
  }
  return;
}

其中，用红色标记的一行，将接收到的数据直接存到目标地址了。

问题是，固化在ROM里的bootloader接收的升级数据不是要存到FLASH里面吗？

如是，为什么不需要调用FLASH的API呢？FLASH在什么情况下可以直接写呢？

peter shi：

回复 Steve Zhang1:

你好，Can升级程序你用的什么上位机？

ControlSUITE中关于boot_rom的例程中，在"Shared_Boot.c"中有如下代码：

//#################################################
// void CopyData(void)
//—————————————————–
// This routine copies multiple blocks of data from the host
// to the specified RAM locations. There is no error
// checking on any of the destination addresses.
// That is it is assumed all addresses and block size
// values are correct.
//
// Multiple blocks of data are copied until a block
// size of 00 00 is encountered.
//
//—————————————————–

void CopyData()
{

  struct HEADER {
  Uint16 BlockSize;
  Uint32 DestAddr;
  } BlockHeader;

  Uint16 wordData;
  Uint16 i;

  // Get the size in words of the first block
  BlockHeader.BlockSize = (*GetWordData)();

  // While the block size is > 0 copy the data
  // to the DestAddr. There is no error checking
  // as it is assumed the DestAddr is a valid
  // memory location

  while(BlockHeader.BlockSize != (Uint16)0x0000)
  {
    BlockHeader.DestAddr = GetLongData();
    for(i = 1; i <= BlockHeader.BlockSize; i++)
    {
      wordData = (*GetWordData)();
      *(Uint16 *)BlockHeader.DestAddr++ = wordData;
    }

  // Get the size of the next block
  BlockHeader.BlockSize = (*GetWordData)();
  }
  return;
}

其中，用红色标记的一行，将接收到的数据直接存到目标地址了。

问题是，固化在ROM里的bootloader接收的升级数据不是要存到FLASH里面吗？

如是，为什么不需要调用FLASH的API呢？FLASH在什么情况下可以直接写呢？

Eric Ma：

回复 peter shi:

上位机看你们熟哪种语言啦，我觉得Java相对容易些，还有就是C++.

eric