WinCE6.0 DEVICEEMULATOR BSP在GEC2410开发板上的移植(1)-eboot及串口驱动移植

WinCE6.0自带的DEVICEEMULATOR就是基于s3c2410处理器的模拟器,我们可以经过修改让其运行在我们的GEC2410开发板上.

一. eboot

之前想直接用5.0的eboot来下载6.0的镜像,但是始终不成功,后来发现两个BSP的bib内存配置和MMU映射不一样,如果要用5.0的eboot需要修改不少配置,既然要跑6.0,就先从6.0的eboot开始吧.把原来5.0的eboot实现的功能移植到6.0的eboot就可以了.

先修改DEVICEEMULATOR的eboot,让它能够跑起来,并且能从PB下载镜像,同时支持KITL.

移植方法和之前在CE5.0上的移植过程基本相同.主要就是eboot参数在flash上的存储(Nor或Nand),LCD显示等.可以参考在CE5.0上的移植笔记:

http://blog.csdn.net/shevsten/archive/2009/07/18/4359439.aspx

http://blog.csdn.net/shevsten/archive/2009/07/06/4326267.aspx

下面就来简单介绍下移植过程,详细步骤可参考上面2篇文章.

1.
添加Nor Flash的支持(SST39VF1601)

(1)添加sst39vf1601.c驱动文件

(2)注释掉AMD Flash调用代码,去除source中引用的库.

(3)在OEMPlatformInit中原来AMD Flash初始化处调用SST39VF1601_CheckID来检测Nor Flash

if(!SST39VF1601_CheckID())
{
OALMSG(OAL_ERROR, (TEXT("ERROR: OEMPlatformInit: Nor Flash initialization failed./r/n")));
OALMSG(TRUE, (TEXT("ERROR: OEMPlatformInit: Nor Flash initialization failed./r/n")));
goto CleanUp;
}

2.修改eboot参数存储方式

修改WriteBootConfig和ReadBootConfig函数,设置Nor或者Nand两种存储方式(通过条件编译#ifdef NOR_BOOT,默认存储在Nor Flash中).

分别通过调用SST39VF1601_EraseFlash,SST39VF1601_WriteFlash,SST39VF1601_ReadFlash,FMD_EraseBlock,FMD_WriteSector,FMD_ReadSector来写flash.

#ifdef NOR_BOOT
/*
@func   BOOL | WriteBootConfig | Write bootloader settings to flash.
@rdesc  TRUE = Success, FALSE = Failure.
@comm
@xref
*/
static BOOL WriteBootConfig(PBOOT_CFG pBootCfg)
{
BOOL bResult = FALSE;

OALMSG(OAL_FUNC, (TEXT("+WriteBootConfig./r/n")));

if (!pBootCfg)
{
goto CleanUp;
}

// First, erase the eboot settings area in flash...
//
if (!SST39VF1601_EraseFlash(EBOOT_CONFIG_OFFSET, sizeof(BOOT_CFG)))
{
OALMSG(OAL_ERROR, (TEXT("ERROR: WriteEbootConfig: Flash erase failed./r/n")));
goto CleanUp;
}

// Write settings to flash...

if (!SST39VF1601_WriteFlash(EBOOT_CONFIG_OFFSET, (PBYTE)pBootCfg, sizeof(BOOT_CFG)))
{
OALMSG(OAL_ERROR, (TEXT("ERROR: WriteEbootConfig: Flash write failed./r/n")));
goto CleanUp;
}

bResult = TRUE;

CleanUp:
OALMSG(OAL_FUNC, (TEXT("-WriteBootConfig./r/n")));
return(bResult);
}
#else //NAND_BOOT
static BOOL WriteBootConfig(PBOOT_CFG pBootCfg)
{
BOOL bResult = FALSE;
OALMSG(OAL_FUNC, (TEXT("+WriteBootConfig./r/n")));
if (!pBootCfg)
{
goto CleanUp;
}

// First, erase the eboot settings area in flash...
//
if (!FMD_EraseBlock(EBOOT_CONFIG_BLOCK))
{
OALMSG(OAL_ERROR, (TEXT("ERROR: WriteEbootConfig: Flash erase failed./r/n")));
goto CleanUp;
}
// Write settings to flash...
//
if (!FMD_WriteSector(EBOOT_CONFIG_SECTOR, (PBYTE)pBootCfg, NULL,EBOOT_CONFIG_SECTOR_SIZE))
{
OALMSG(OAL_ERROR, (TEXT("ERROR: WriteEbootConfig: Flash write failed./r/n")));
goto CleanUp;
}
bResult = TRUE;
CleanUp:
OALMSG(OAL_FUNC, (TEXT("-WriteBootConfig./r/n")));
return(bResult);
}
#endif //#ifdef NOR_BOOT

3.修改InitDisplay

修改LCD控制器参数,添加bitmap.c显示启动画面.

static void InitDisplay(void)
{
volatile S3C2410X_IOPORT_REG *s2410IOP = (S3C2410X_IOPORT_REG *)OALPAtoVA(S3C2410X_BASE_REG_PA_IOPORT, FALSE);
volatile S3C2410X_LCD_REG    *s2410LCD = (S3C2410X_LCD_REG *)OALPAtoVA(S3C2410X_BASE_REG_PA_LCD, FALSE);
unsigned int XSize;
unsigned int YSize;
unsigned int BppMode;
if (pBSPArgs->ScreenSignature == BSP_SCREEN_SIGNATURE)
{
YSize = pBSPArgs->ScreenHeight;
XSize = pBSPArgs->ScreenWidth;
switch (pBSPArgs->ScreenBitsPerPixel) {
case 16:
default:            // assume 16bpp if the value is unsupported
BppMode = 12;
break;
case 24:
BppMode = 13;
break;
case 32:
BppMode = 14;
break;
}
OALMSG(OAL_WARN, (TEXT("Using emulator-specified video parameters: %dx%dx%d/r/n"), XSize, YSize, pBSPArgs->ScreenBitsPerPixel));
}
else
{
YSize = LCD_YSIZE_TFT;
XSize = LCD_XSIZE_TFT;
BppMode = 12;       // 16bpp
}
// Set up the LCD controller registers to display a power-on bitmap image.
//
s2410IOP->GPCUP     = 0xFFFFFFFF;
s2410IOP->GPCCON    = 0xAAAA56A9;

s2410IOP->GPDUP     = 0xFFFFFFFF;
s2410IOP->GPDCON    = 0xAAAAAAAA;
s2410LCD->LCDCON1   =  (5           <<  8) |       /* VCLK = HCLK / ((CLKVAL + 1) * 2) -> About 7 Mhz  */
(0           <<  7) |       /* 0 : Each Frame                                   */
(3           <<  5) |       /* TFT LCD Pannel                                   */
(BppMode     <<  1) |       /* bpp Mode                                         */
(0           <<  0) ;       /* Disable LCD Output                               */
s2410LCD->LCDCON2   =  (2        << 24) |   /* VBPD          :   1                              */
((YSize-1)<< 14) |   /* Vertical Size : 320 - 1                          */
(2        <<  6) |   /* VFPD          :   2                              */
(4        <<  0) ;   /* VSPW          :   1                              */
s2410LCD->LCDCON3   =  (8        << 19) |   /* HBPD          :   6                              */
((XSize-1)<<  8) |   /* HOZVAL_TFT    : 240 - 1                          */
(8        <<  0) ;   /* HFPD          :   2                              */

s2410LCD->LCDCON4   =  (LCD_MVAL <<  8) |   /* MVAL          :  13                              */
(6        <<  0) ;   /* HSPW          :   4                              */
s2410LCD->LCDCON5   =  (0           << 12) |       /* BPP24BL       : LSB valid                        */
(1           << 11) |       /* FRM565 MODE   : 5:6:5 Format                     */
(0           << 10) |       /* INVVCLK       : VCLK Falling Edge                */
(0           <<  9) |       /* INVVLINE      : Inverted Polarity                */
(0           <<  8) |       /* INVVFRAME     : Inverted Polarity                */
(0           <<  7) |       /* INVVD         : Normal                           */
(0           <<  6) |       /* INVVDEN       : Normal                           */
(0           <<  5) |       /* INVPWREN      : Normal                           */
(0           <<  4) |       /* INVENDLINE    : Normal                           */
(0           <<  3) |       /* PWREN         : Disable PWREN                    */
(0           <<  2) |       /* ENLEND        : Disable LEND signal              */
(0           <<  1) |       /* BSWP          : Swap Disable                     */
(1           <<  0) ;       /* HWSWP         : Swap Enable                      */
s2410LCD->LCDSADDR1 = ((IMAGE_FRAMEBUFFER_DMA_BASE >> 22)     << 21) |
((M5D(IMAGE_FRAMEBUFFER_DMA_BASE >> 1)) <<  0);
s2410LCD->LCDSADDR2 = M5D((IMAGE_FRAMEBUFFER_DMA_BASE + (XSize * YSize * 2)) >> 1);
s2410LCD->LCDSADDR3 = (((XSize - XSize) / 1) << 11) | (XSize / 1);
s2410LCD->LCDINTMSK |= 3; // MASK LCD Sub Interrupt
s2410LCD->LPCSEL   |= ~0x7;

s2410LCD->TPAL      = 0x0;
s2410LCD->LCDCON1  |= 1;

memcpy((void *)IMAGE_FRAMEBUFFER_UA_BASE, ScreenBitmap, LCD_ARRAY_SIZE_TFT_16BIT);
}

CE6.0的2410BSP中nand驱动(FMD)中的错误已经得到修正.我们就不需要像在SMDK2410的BSP中那样修改了.

这样最简单的eboot就可以运行了,设置必要的参数,如IP地址等,然后就可以BOOTME了.

4.BINFS在Nand上的实现(OS镜像的烧写与加载)

接下来我们来让eboot支持BINFS在NandFlash上实现,方法和在5.0eboot中实现的方法基本一样,请参考5.0 eboot的笔记:

http://blog.csdn.net/shevsten/archive/2010/02/08/5299002.aspx

需要注意的是因为MMU映射,bib内存配置和之前5.0的配置有所不同,有些内存地址定义地址需要修改,如BINFS RAM的地址:

#define BINFS_RAM_START (0x83E21000 | CACHED_TO_UNCACHED_OFFSET) // uncached

#define BINFS_RAM_LENGTH 0x5000

经过测试,就可以通过以太网下载并保存OS image到Nand中,启动时可以设置自动读取Nand中的image加载到RAM中并启动CE了.

eboot的配置菜单:



从Nand加载OS Image:



二. 串口驱动

DEVICEEMULATOR BSP中串口驱动和SMDK2410下的串口驱动基本相同,移植方法也一样(实际上基本没什么工作),在GEC2410.bat文件中设置BSP_NOSERIAL=以及组件设置中BSP中的serial组件被选上即可。



这里就不多做介绍了，关于驱动分析和测试程序可参考5.0下的移植笔记:

SMDK2410 Serial驱动移植及测试程序:

http://blog.csdn.net/shevsten/archive/2010/02/02/5280367.aspx

Serial驱动分析:

http://blog.csdn.net/shevsten/archive/2010/06/08/5655749.aspx

http://blog.csdn.net/shevsten/archive/2010/06/10/5661216.aspx

http://blog.csdn.net/shevsten/archive/2010/06/13/5668696.aspx