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35 lines
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.. comment SPDX-License-Identifier: CC-BY-SA-4.0
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.. COMMENT: COPYRIGHT (c) 1988-2002.
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.. COMMENT: On-Line Applications Research Corporation (OAR).
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.. COMMENT: All rights reserved.
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=======
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Preface
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=======
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The purpose of this manual is to provide a roadmap to those people porting
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RTEMS to a new CPU family. This process includes a variety of activities
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including the following:
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- targeting the GNU development tools
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- porting the RTEMS executive code
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- developing a Board Support Package
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- writing an RTEMS CPU Supplement manual for the completed port.
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This document focuses on the process of actually porting the RTEMS
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executive code proper. Each of the data structures, routines, and macro
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definitions required of a port of RTEMS is described in this document.
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Porting any operating system, including RTEMS, requires knowledge of the
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operating system, target CPU architecture, and debug environment. It is
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very desirable to have a CPU simulator or hardware emulator when debugging
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the port. This manual assumes that the user is familiar with building and
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using RTEMS, the C programming language, and the target CPU architecture.
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It is desirable to be familiar with the assembly language for the target
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CPU family but since only a limited amount of assembly is required to port
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RTEMS.
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