wince 6410Blogo全屏修改

本人是菜鸟，所以首先在网上找的资料，前提是你要把别人的程序读懂，才能改成自己的，这次大致花了2-3天时间搞定。

1，找到loader.h这个文件给logo.bin下载分配一定的block 如下

#define LOGO_BLOCK 6
#define LOGO_BLOCK_SIZE 20
#define LOGO_SECTOR BLOCK_TO_SECTOR(LOGO_BLOCK)

2,我们在eboot下main.c文件的mainmenu函数添加下载命令如下

 EdbgOutputDebugString ( "W) Write Configuration Right Now\r\n");
  EdbgOutputDebugString ( "G) DOWNLOAD Logo  now(USB)\r\n");
        EdbgOutputDebugString ( "\r\nEnter your selection: ");
  

        while (! ( ( (KeySelect >= '0') && (KeySelect <= '9') ) ||
                   ( (KeySelect == 'A') || (KeySelect == 'a') ) ||
                   ( (KeySelect == 'B') || (KeySelect == 'b') ) ||
                   ( (KeySelect == 'C') || (KeySelect == 'c') ) ||
                   ( (KeySelect == 'D') || (KeySelect == 'd') ) ||
                   ( (KeySelect == 'E') || (KeySelect == 'e') ) ||
                   ( (KeySelect == 'F') || (KeySelect == 'f') ) ||
                   ( (KeySelect == 'L') || (KeySelect == 'l') ) ||
                   ( (KeySelect == 'R') || (KeySelect == 'r') ) ||
                   ( (KeySelect == 'U') || (KeySelect == 'u') ) ||
                   ( (KeySelect == 'W') || (KeySelect == 'w') ) ||
                   ( (KeySelect == 'G') || (KeySelect == 'g') )
              )   )
        {
            KeySelect = OEMReadDebugByte();
        }

        EdbgOutputDebugString ( "%c\r\n", KeySelect);

        switch(KeySelect)
        {
        case 'G':
  case 'g':
     {
    OALMSG(TRUE, (TEXT("Please send the Logo through USB.\r\n")));
    g_bUSBDownload = TRUE;
  
    {
      DWORD dwStartAddr = 0;
      LPBYTE lpDes = NULL;    
      lpDes = (LPBYTE)(FILE_CACHE_START);
  
      if (!OEMReadData(LCD_WIDTH*LCD_HEIGHT*2, lpDes))
      {
     OALMSG(TRUE, (TEXT("Error when sending the Logo through USB.\r\n")));
     SpinForever();
      }
  
      dwStartAddr = (DWORD)lpDes;
  
      if (!WriteLogoToBootMedia(dwStartAddr, (DWORD)(LCD_WIDTH*LCD_HEIGHT*2), dwStartAddr))
      {
     OALMSG(TRUE, (TEXT("Error when WriteLogoToBootMedia.\r\n")));
     SpinForever();
      }
    }
     }
     break;

3，我们在nanflash初始化之后读取nandflash第6块到显存，即在OEMPlatformInit函数FMD_GetInfo(&flashInfo)；代码之后添加

DWORD dwReadAddr = (DWORD)EBOOT_FRAMEBUFFER_UA_START;
  if (!DisplayLogoFromBootMedia(dwReadAddr, (DWORD)LCD_WIDTH*LCD_HEIGHT*2, dwReadAddr))
  { 
    //OALMSG(TRUE, (TEXT("+DisplayLogoFromBootMedia error\r\n")));
  // EdbgOutputDebugString("DisplayLogoFromBootMedia error\r\n");
    int i;
    unsigned short *pFB;
    pFB = (unsigned short *)EBOOT_FRAMEBUFFER_UA_START;
 
   for (i=0; i<LCD_WIDTH*LCD_HEIGHT; i++)
   *pFB++ = 0xAE30;//0x001F;     // Blue
   // for (i=0; i<800*480; i++)
    // *pFB++ =0xAE30;// Logo[i];//0xAE30;//0x001F; 
 
    OALMSG(TRUE,(TEXT("+DisplayLogoFromBootMedia error\r\n")));
  }

4，大家可以看到我们涉及到两个函数WriteLogoToBootMedia和DisplayLogoFromBootMedia这两个函数都需要自己写，我们在nand.cpp定义，添加自己的.h声明这里两个函数方便我们调用

BOOL WriteLogoToBootMedia(DWORD dwImageStart, DWORD dwImageLength, DWORD dwLaunchAddr)
{
  DWORD dwBlock,dwNumBlocks;
  LPBYTE pbBuffer;
  SectorInfo si;

  OALMSG(TRUE, (TEXT("+WriteLogoToBootMedia\r\n")));

  dwBlock = LOGO_BLOCK;
  pbBuffer = (LPBYTE)dwImageStart;

  OALMSG(TRUE, (TEXT("^^^^^^^^ 0x%x ^^^^^^^^\r\n"), (unsigned short *)pbBuffer));
 // OALMSG(TRUE, (TEXT("^^^^^^^^ 0x%x ^^^^^^^^\r\n")，g_FlashInfo.wDataBytesPerSector));
  OALMSG(TRUE, (TEXT(" g_FlashInfo.wDataBytesPerSector = 0x%x \r\n"), g_FlashInfo.wDataBytesPerSector));
  OALMSG(TRUE, (TEXT("g_FlashInfo.wSectorsPerBlock = 0x%x \r\n"), g_FlashInfo.wSectorsPerBlock));
  dwNumBlocks = (dwImageLength/(g_FlashInfo.wDataBytesPerSector*g_FlashInfo.wSectorsPerBlock)) +   
                                                 (dwImageLength%(g_FlashInfo.wDataBytesPerSector*g_FlashInfo.wSectorsPerBlock) ? 1: 0);

  OALMSG(TRUE, (TEXT("dwImageLength = 0x%x \r\n"), dwImageLength));
  OALMSG(TRUE, (TEXT("dwNumBlocks = 0x%x \r\n"), dwNumBlocks));

  while (dwNumBlocks--)
  {
    OALMSG(TRUE, (TEXT("dwBlock(0x%x) X "), dwBlock));
    OALMSG(TRUE, (TEXT("g_FlashInfo.wSectorsPerBlock(0x%x)"), g_FlashInfo.wSectorsPerBlock));
    OALMSG(TRUE, (TEXT(" = 0x%x \r\n"), dwBlock*g_FlashInfo.wSectorsPerBlock));

    FMD_ReadSector(dwBlock*g_FlashInfo.wSectorsPerBlock, NULL, &si, 1);

    // Stepldr & Eboot image in nand flash
    // block mark as BLOCK_STATUS_RESERVED & BLOCK_STATUS_READONLY & BLOCK_STATUS_BAD
    if ((si.bBadBlock == 0x0) && (si.bOEMReserved !=3 ))
    {
      ++dwBlock;
      ++dwNumBlocks;                // Compensate for fact that we didn't write any blocks.
      continue;
    }

    if (!ReadBlock(dwBlock, NULL, g_pSectorInfoBuf))
    {
      OALMSG(OAL_ERROR, (TEXT("WriteData: failed to read block (0x%x).\r\n"), dwBlock));
      return(FALSE);
    }

    if (!FMD_EraseBlock(dwBlock))
    {
      OALMSG(OAL_ERROR, (TEXT("WriteData: failed to erase block (0x%x).\r\n"), dwBlock));
      return FALSE;
    }

    if (!WriteBlock(dwBlock, pbBuffer, g_pSectorInfoBuf))
    {
      OALMSG(OAL_ERROR, (TEXT("WriteData: failed to write block (0x%x).\r\n"), dwBlock));
      return(FALSE);
    }

    ++dwBlock;
    pbBuffer += g_FlashInfo.dwBytesPerBlock;
    OALMSG(TRUE, (TEXT("dwBytesPerBlock : %d\r\n"), g_FlashInfo.dwBytesPerBlock));
  }

  OALMSG(TRUE, (TEXT("_WriteLogoToBootMedia\r\n")));
  //DisplayLogoFromBootMedia( dwImageStart,  dwImageLength,  dwLaunchAddr) ;
  svs=0;
  return TRUE;
}

/*
  Read the Logo data from Nand Flash
  add by jazka 2014.06.04
*/
BOOL DisplayLogoFromBootMedia(DWORD dwImageStart, DWORD dwImageLength, DWORD dwLaunchAddr)
{
  unsigned int * pFB32 = (unsigned int *)EBOOT_FRAMEBUFFER_UA_START;
  unsigned int * dst = pFB32;       
  //unsigned int * p = NULL;
  SectorInfo si;

  DWORD dwBlock,dwNumBlocks;

  OALMSG(TRUE, (TEXT("+ReadLogoFromBootMedia\r\n")));

  dwBlock = LOGO_BLOCK;

  OALMSG(TRUE, (TEXT("dwImageLength = 0x%x \r\n"), dwImageLength));
  OALMSG(TRUE, (TEXT("dwImageLength = 0x%x \r\n"), g_FlashInfo.wDataBytesPerSector));
  OALMSG(TRUE, (TEXT("dwImageLength = 0x%x \r\n"), g_FlashInfo.wSectorsPerBlock));

  if (0 == g_FlashInfo.wDataBytesPerSector || 0 == g_FlashInfo.wSectorsPerBlock)
  {
    return FALSE; //在此处返回了
  }

  dwNumBlocks = (dwImageLength / (g_FlashInfo.wDataBytesPerSector*g_FlashInfo.wSectorsPerBlock)) +
                (dwImageLength%(g_FlashInfo.wDataBytesPerSector*g_FlashInfo.wSectorsPerBlock) ? 1: 0);
  OALMSG(TRUE, (TEXT("dwNumBlocks = 0x%x \r\n"), dwNumBlocks));
 // dwNumBlocks=0x60;

  while (dwNumBlocks--)
  {   
    OALMSG(TRUE, (TEXT("dwBlock(0x%x) X "), dwBlock));
    OALMSG(TRUE, (TEXT("g_FlashInfo.wSectorsPerBlock(0x%x)"), g_FlashInfo.wSectorsPerBlock));
    OALMSG(TRUE, (TEXT(" = 0x%x \r\n"), dwBlock*g_FlashInfo.wSectorsPerBlock));

    //BOOL ReadBlock(DWORD dwBlock, LPBYTE pbBlock, PSectorInfo pSectorInfoTable)
    if (!ReadBlock(dwBlock, (LPBYTE)dst, g_pSectorInfoBuf))
    {
      OALMSG(OAL_ERROR, (TEXT("WriteData: failed to read block (0x%x).\r\n"), dwBlock));
      return(FALSE);   
    }
    dst += g_FlashInfo.dwBytesPerBlock/4;
 //dst += 1024*128/4;
    ++dwBlock;
  }
  OALMSG(TRUE, (TEXT("_ReadLogoFromBootMedia\r\n")));

  return TRUE;
}

5，我们生成IROM_SD_EBOOT.nb0等文件，进eboot通过g下载测试通过。