>> Normal boot字符消失的瞬间，LK LOGO花屏

ANDROD5.1 开机从lk切换到kernel的瞬间显示不正常的现象，即在boot logo那一张上面显示的normal boot字符 消失的时刻。LOGO花屏，mtkfb.c怎么解决?

#if defined(MTK_OVL_DECOUPLE_SUPPORT)
        fbdev->ovl_pa_base = fbdev->fb_pa_base + DISP_GetFBRamSize() + DAL_GetLayerSize();
        fbdev->ovl_va_base = fbdev->fb_va_base + DISP_GetFBRamSize() + DAL_GetLayerSize();
        fbdev->ovl_size_in_byte = DISP_GetOVLRamSize();
        decouple_addr = fbdev->ovl_pa_base;
        decouple_size = fbdev->ovl_size_in_byte;
        // Copy lk logo buffer to decouple buffer
       mtkfb_fb_565_to_888((void*)fbdev->fb_va_base);
        MTKFB_INFO("fb_pa_base=0x%08x, fb_pa=0x%08x, decouple_addr=0x%08x\n", fbdev->fb_pa_base, fb_pa, decouple_addr);
#endif
上面是LK LOGO在KEREL里面 的转换

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