WinCE6.0 修改开机Logo方法(2)

//*pFB++ = 0x001F; //modify by jazka 2011.07.22

*pFB++ = InitialImage_rgb16_480x272[i];

}

*/

//add by jazka 2011.08.31

//memcpy((void *)EBOOT_FRAMEBUFFER_UA_START, (void *)InitialImage_rgb16_480x272, 480*272*2);

//modify by jazka 2011.09.07

DWORD dwReadAddr = (DWORD)EBOOT_FRAMEBUFFER_UA_START;

if (!DisplayLogoFromBootMedia(dwReadAddr, (DWORD)LCD_WIDTH*LCD_HEIGHT*2, dwReadAddr))

{

int i;

unsigned short *pFB;

pFB = (unsigned short *)EBOOT_FRAMEBUFFER_UA_START;

for (i=0; i<LCD_WIDTH*LCD_HEIGHT; i++)

*pFB++ = 0x0000;//0x001F;// Blue

}

DisplayLogoFromBootMedia函数便是Flash的度函数，这里将读出的数据读取到显示缓存EBOOT_FRAMEBUFFER_US_START中，该变量的推动后面给出。

4、修改nand.cpp文件，添加WriteLogoToBootMedia和DisplayLogoFromBootMedia两个函数的实现。

/*

Write the Logo data to Nand Flash

add by jazka 2011.09.05

*/

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));

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")));

return TRUE;

}

/*

Read the Logo data from Nand Flash

add by jazka 2011.09.05

*/

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;

}

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));

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;

++dwBlock;

}

OALMSG(TRUE, (TEXT("_ReadLogoFromBootMedia\r\n")));

return TRUE;

}

5、关于Logo数据的文件bin的生成，网上有众多软件可以实现wince主题软件，其实可以自己写一个应用程序完成该功能。本人撰写了24位Bmp文件生成RGB565格式的bin文件的程序，这部分代码也可以在nand.app中写成一个函数，在读取Flash时调用转换为相应的RGB565数据就能，这样更新Logo时可以很直接。注意下载时的数据量是目前的3倍。

这里就不给出源代码了，如果必须，请留言。

今天就到此处，改天上实现方式二：将Logo.bin做成和Eboot.bin一样的格式，这样下载Eboot.bin的好多代码就可以直接使用。

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