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Embedded Linux Primer: A Practical, Real-World ApproachTwo primary issues required changes. First, PCI was disabled because it is not used in the PowerDNA design. This required some minor tweaking. Second, the PowerDNA design incorporates an unmanaged Ethernet physical-layer chip that required slight changes in the hardware setup and the FEC layer. This work constituted the majority of the porting effort. The patch file consists of 1120 lines, but the bulk of those lines are the default configuration, which is only a convenience for the developer and is not strictly necessary. Removing that, the patch reduces to 411 lines. 16.4.1. Other Architectures We examined the details of how a given platform fits into the kernel, and the facilities that exist for porting to a new board. Our reference for this chapter and the discussions within came from the PowerPC architecture branch of the kernel. The other architectures differ in many detailed aspects of how various hardware platforms are incorporated, but the concepts are similar. When you have learned how to navigate a single architecture, you have the knowledge and tools to learn the details of the other architectures. 16.5 ...» | Код для вставки книги в блог HTML
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