| Commit message (Collapse) | Author | Age | Files | Lines |
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A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.
This has at least seven problems:
* The make preinstall step itself needs time and disk space.
* Errors in header files show up in the build tree copy. This makes it
hard for editors to open the right file to fix the error.
* There is no clear relationship between source and build tree header
files. This makes an audit of the build process difficult.
* The visibility of all header files in the build tree makes it
difficult to enforce API barriers. For example it is discouraged to
use BSP-specifics in the cpukit.
* An introduction of a new build system is difficult.
* Include paths specified by the -B option are system headers. This
may suppress warnings.
* The parallel build had sporadic failures on some hosts.
This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.
The new cpukit include directories are:
* cpukit/include
* cpukit/score/cpu/@RTEMS_CPU@/include
* cpukit/libnetworking
The new BSP include directories are:
* bsps/include
* bsps/@RTEMS_CPU@/include
* bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include
There are build tree include directories for generated files.
The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.
The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.
Update #3254.
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This was done by the following script run from libbsp:
find * -name bsp.h | xargs -e grep -l "#ifndef.*_BSP_H" | while read b
do
echo $b
cpu=`echo $b | cut -d'/' -f1 | tr '[:lower:]' '[:upper:]' `
bsp=`echo $b | cut -d'/' -f2 | tr '[:lower:]' '[:upper:]' `
g="LIBBSP_${cpu}_${bsp}_BSP_H"
# echo $g
sed -e "s/ifndef _BSP_H/ifndef ${g}/" \
-e "s/define _BSP_H/define ${g}/" \
-i $b
done
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Some includes may use C++ and this conflicts if surrounded extern "C".
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Include <bsp/default-initial-extension.h> in all BSPs. Call
rtems_fatal() with RTEMS_FATAL_SOURCE_EXIT as source and the exit()
status code as fatal code in every bsp_cleanup(). Move previous
bsp_cleanup() code into bsp_fatal_extension().
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Script does what is expected and tries to do it as
smartly as possible.
+ remove occurrences of two blank comment lines
next to each other after Id string line removed.
+ remove entire comment blocks which only exited to
contain CVS Ids
+ If the processing left a blank line at the top of
a file, it was removed.
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* include/bsp.h: Add BSP_SMALL_MEMORY.
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* Makefile.am, configure.ac, include/bsp.h, startup/linkcmds: Use
shared bsp_get_work_area() in its own file and rely on BSP Framework
to perform more initialization. After factoring this out, it turned
out that all SuperH BSPs has the same bsp_start() implementation so
this was made shared.
* startup/bspstart.c: Removed.
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* include/bsp.h: Review of all bsp_cleanup() implementations. In this
phase, all prototypes were removed from bsp.h and empty
implementations were removed and made to use the shared stub.
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* include/bsp.h, startup/bspstart.c: Eliminate copies of the
Configuration Table. Use the RTEMS provided accessor macros to obtain
configuration fields.
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* include/bsp.h, startup/bspstart.c: Move interrupt_stack_size field
from CPU Table to Configuration Table. Eliminate CPU Table from all
ports. Delete references to CPU Table in all forms.
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* include/bsp.h: New header guard.
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* include/bsp.h: Split out tmtest27 support.
* include/tm27.h: New.
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PR 613/bsps
* include/bsp.h: Remove MAX_LONG_TEST_DURATION.
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PR 614/bsps
* include/bsp.h: Remove MAX_SHORT_TEST_DURATION (Unused).
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* include/bsp.h: Include <rtems/clockdrv.h> instead of <clockdrv.h>.
* include/bsp.h: Include <rtems/console.h> instead of <console.h>.
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* include/bsp.h, startup/bspstart.c: Convert to using c99 fixed size
types.
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* include/bsp.h, include/coverhd.h, start/start.S, startup/bspclean.c,
startup/bspstart.c, startup/linkcmds: URL for license changed.
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* include/bsp.h, include/coverhd.h, start/start.S, startup/bspclean.c,
startup/bspstart.c, startup/linkcmds: Fixed typo.
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* include/bsp.h: Renamed delay() to rtems_bsp_delay().
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* configure.in: Use RTEMS_PROG_CC_FOR_TARGET([-ansi -fasm]),
add bspopts.h.
* include/.cvsignore: Add stamp-h*, bspopts.h*.
* include/Makefile.am: Use include_HEADERS instead of H_FILES.
* include/bsp.h: Add bspopts.h.
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* include/bsp.h: Changed <sh/null.h> to <rtems/devnull.h> to reflect
the movement of this component to libmisc.
* wrapup/Makefile.am: /dev/null driver is no longer in libcpu/sh.
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Ralf Corsepius <corsepiu@faw.uni-ulm.de> that adds initial Hitachi SH-2
support to RTEMS. Ralf's comments are:
Changes:
------
1. SH-Port:
* Many files renamed.
* CONSOLE_DEVNAME and MHZ defines removed from libcpu.
* console.c moved to libbsp/sh/shared, build in libbsp/sh/<BSP>/console
applying VPATH.
* CONSOLE_DEVNAME made BSP-specific, replacement is defined in bsp.h
* MHZ define replaced with HZ (extendent resolution) in custom/*.cfg
* -DHZ=HZ used in bspstart.c, only
* Makefile variable HZ used in bsp-dependent directories only.
2. SH1-Port
* clock-driver rewritten to provide better resolution for odd CPU
frequencies. This driver is only partially tested on hardware, ie.
sightly experimental, but I don't expect severe problems with it.
* Polling SCI-driver added. This driver is experimental and completly
untested yet. Therefore it is not yet used for the console (/dev/console
is still pointing to /dev/null, cf. gensh1/bsp.h).
* minor changes to the timer driver
* SH1 specific delay()/CPU_delay() now is implemented as a function
3. SH2-Port
* Merged
* IMO, the code is still in its infancy. Therefore I have interspersed
comments (FIXME) it for items which I think John should look after.
* sci and console drivers partially rewritten and extended (John, I hope
you don't mind).
* Copyright notices are not yet adapted
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Please find enclosed a patch which enables me to build the bare-bsp for
sh-rtems.
Changes:
1. Add preinstall to libbsp/bare/include/Makefile.in
2. Removed FORCEIT, add preinstall to
libbsp/sh/gensh1/include/Makefile.in
3. Disabled support of set_vector from sh code (shared/setvec.c is still
present but isn't used anymore), set_vector replaced with standard rtems
functions.
Problems still present:
1. Support of spin-delays in bare bsp
2. Proper support of cpu frequency
To configure I used:
<srcdir>/configure \
--target=sh-rtems \
--prefix=<instdir>/sh-bare \
--enable-bare-cpu-model=sh7032 \
--enable-bare-cpu-cflags='-Wall -m1 -DMHZ=20
-DCPU_CONSOLE_DEVNAME="\"/dev/null\""'
--enable-rtemsbsp=bare \
--disable-networking \
--disable-cxx \
--disable-posix \
--disable-tests
IMO, if there are no objections to this patch, a similar approach should
be applied to all CPUs/BSPs (esp. hppa1.1, mips64orion, ppc403, because
they apply set_vector inside of libcpu).
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code in each BSP's bspstart.c. These changes were:
+ confdefs.h now knows libio's semaphore requirements
+ shared/main.c now copies Configuration to BSP_Configuration
+ shared/main.c fills in the Cpu_table with default values
This removed the need for rtems_libio_config() and the constant
BSP_LIBIO_MAX_FDS in every BSP. Plus now the maximum number of open
files can now be set on the gcc command line.
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based on the GNU tools. This usually involved correcting the
type of bsp_start(), bsp_cleanup(), adjusting the start code to
call the right start routine (the shared boot_card()), and then
removing code from bsp_start() which was performed in the new
boot_card()/main() path.
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