December 2005
Intermediate to advanced
432 pages
12h 32m
English
Content preview from Embedded Linux System Design and Development
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Chapter 3
Board Support Package
A BSP or “Board Support Package” is the set of software used to initialize the
hardware devices on the board and implement the board-specific routines
that can be used by the kernel and device drivers alike. BSP is thus a hardware
abstraction layer gluing hardware to the OS by hiding the details of the
processor and the board. The BSP hides the board- and CPU-specific details
from the rest of the OS, so portability of drivers across multiple boards and
CPUs becomes extremely easy. Another term that is often used instead of BSP
is the Hardware Abstraction Layer or the HAL. HAL is more famous with UNIX
users whereas the RTOS ...
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