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Diffstat (limited to 'c/src/lib/libbsp/README')
| -rw-r--r-- | c/src/lib/libbsp/README | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/README b/c/src/lib/libbsp/README new file mode 100644 index 0000000000..c3b978b6cb --- /dev/null +++ b/c/src/lib/libbsp/README @@ -0,0 +1,46 @@ +# +# $Id$ +# + +Board Support Package library + +This directory contains the source for the libbsp.a library. +For each supported board $(RTEMS_BSP) there is a standard +set of functions which must be provided in the BSP: + + + start up initialization + + exit support + + set vector + + console IO support + + drivers + +In addition, the BSP also determines the memory usage by providing +any necessary linker scripts. + +There are also "generic" drivers in this directory. Currently +they are shmdr and stubdr. + +Some of the supplied generic drivers (for example, shared memory) require +target board specific support routines. + +NOTE: The library libbsp.a is actually built by $(RTEMS_BSP)/wrapup/Makefile. + +To execute all of the test in the RTEMS Tests Suites the following +device drivers must be supplied: + + + Clock Tick + + IO Driver Support + + Timer + + Shared Memory Driver Support + +The Timer Driver is used only by the Timing Test Suite (c/src/tests/tmtests/*). +These tests are used to generate the execution times for RTEMS found in the +flyers. It is recommended that these tests be run to verify a port to a new +CPU or with a newly developed BSP. Looking at the times as compared to a +known CPU and target can yield insights into potential performance problems +in either the port, the BSP, or the target hardware. + +The Shared Memory Support is only required to execute the Multiprocessor +Test Suite (c/src/tests/mptests/*). Multiprocessing is not a required part +of a BSP. + |