RTEMS Development Environment Guide
The "lib" directory contains the support libraries and BSPS. Board support packages (BSPs), processor environment start up code, C library support, the FreeBSD TCP/IP stack, common BSP header files, and miscellaneous support functions are provided in the subdirectories. These are combined with the RTEMS executive object to form the single RTEMS library which installed.
The "libbsp" directory contains a directory for each CPU family supported by RTEMS. Beneath each CPU directory is a directory for each BSP for that processor family.
The "libbsp" directory provides all the BSPs provided with this release of the RTEMS executive. The subdirectories are divided, as discussed previously, based on specific processor family, then further breaking down into specific target board environments. The "shmdr" subdirectory provides the implementation of a shared memory driver which supports the multiprocessing portion of the executive. In addition, two starting point subdirectories are provided for reference. The "no_cpu" subdirectory provides a template BSP which can be used to develop a specific BSP for an unsupported target board. The "stubdr" subdirectory provides stubbed out BSPs. These files may aid in preliminary testing of the RTEMS development environment that has been built for no particular target in mind.
Below each CPU dependent directory is a directory for each target BSP supported in this release.
Each BSP provides the modules which comprise an RTEMS BSP. The modules are separated into the subdirectories "clock", "console", "include", "shmsupp", "startup", and "timer" as shown in the following figure:
Each BSP
|
+-----------+----------+-----+-----+----------+----------+
| | | | | |
clock console include ... startup timer
RTEMS Development Environment Guide
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