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Boot logo and boot animation.
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u-boot doesn’t load any screen drivers..
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There is an initial logo image displayed while the kernel loads. Those images are :
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* `./kernel/logo.bmp`
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* `./kernel/logo_kernel.bmp`
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I honestly don’t know which is the correct one, I always just change them both. Format is fairly specific, so don’t get too crazy.
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Once the kernel is loaded and and the android system is initializing there is a bootanimation that is shown. Documentation for the format can be found online. Source for triggering it is in a strange place in the aosp source tree (`./frameworks/base/cmds/bootanimation`). For the most part, once you have a bootanimation.zip that you want to use you can place it in the device folder (`device/rockchip/rk312x`) and use the following in your device.mk to copy it to the correct location. The system should just play it once it finds it there.
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`PRODUCT_COPY_FILES += device/rockchip/rk312x/bootanimation.zip:system/media/bootanimation.zip`
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If you are using full frame images, you can get away with about a 10fps rate. We ended up using OpenGL to get the smooth color transitions on our animations. |
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