Книга: Microsoft Windows Embedded CE 6.0 Exam Preparation Kit

Lesson Summary

Lesson Summary

It is advantageous to start the BSP development process by cloning an appropriate reference BSP. Ideally, this BSP should be based on the same or similar hardware platform because this makes the most of tested and proven production features. Windows Embedded CE features a PQOAL architecture and Platform Builder tools that facilitate the cloning process. The goal is to create a bootable system with minimum customizations and then add additional features and support for peripheral devices as necessary.

The first component of a BSP that you might have to adapt is the boot loader, which is responsible for initializing the hardware platform and passing execution to the kernel. The second component is the OAL, which contains the platform-specific code that the kernel needs for hardware initialization, interrupt handling, and timer handling for the thread scheduler, KITL, and kernel debug output. The third part of the BSP you must adapt is the device drivers for peripheral devices. The fourth part of the BSP requiring adaptation is the configuration files that control the build process, determine the memory layout, and specify system configuration settings. If the BSP adaption is based on a reference BSP for the same processor architecture, then most of the CPU-related and memory controller-related BSP code can remain unchanged. You only need to address platform-specific code portions that focus on bringing up the hardware, rather than creating the necessary setup for the BSP.

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