| Commit message (Collapse) | Author | Age | Files | Lines |
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Statically initialize the interrupt stack area
(_Configuration_Interrupt_stack_area_begin,
_Configuration_Interrupt_stack_area_end, and
_Configuration_Interrupt_stack_size) via <rtems/confdefs.h>. Place the
interrupt stack area in a special section ".rtemsstack.interrupt". Let
BSPs define the optimal placement of this section in their linker
command files (e.g. in a fast on-chip memory).
This change makes makes the CPU_HAS_SOFTWARE_INTERRUPT_STACK and
CPU_HAS_HARDWARE_INTERRUPT_STACK CPU port defines superfluous, since the
low level initialization code has all information available via global
symbols.
This change makes the CPU_ALLOCATE_INTERRUPT_STACK CPU port define
superfluous, since the interrupt stacks are allocated by confdefs.h for
all architectures. There is no need for BSP-specific linker command
file magic (except the section placement), see previous ARM linker
command file as a bad example.
Remove _CPU_Install_interrupt_stack(). Initialize the hardware
interrupt stack in _CPU_Initialize() if necessary (e.g.
m68k_install_interrupt_stack()).
The optional _CPU_Interrupt_stack_setup() is still useful to customize
the registration of the interrupt stack area in the per-CPU information.
The initialization stack can reuse the interrupt stack, since
* interrupts are disabled during the sequential system initialization,
and
* the boot_card() function does not return.
This stack resuse saves memory.
Changes per architecture:
arm:
* Mostly replace the linker symbol based configuration of stacks with
the standard <rtems/confdefs.h> configuration via
CONFIGURE_INTERRUPT_STACK_SIZE. The size of the FIQ, ABT and UND
mode stack is still defined via linker symbols. These modes are
rarely used in applications and the default values provided by the
BSP should be sufficient in most cases.
* Remove the bsp_processor_count linker symbol hack used for the SMP
support. This is possible since the interrupt stack area is now
allocated by the linker and not allocated from the heap. This makes
some configure.ac stuff obsolete. Remove the now superfluous BSP
variants altcycv_devkit_smp and realview_pbx_a9_qemu_smp.
bfin:
* Remove unused magic linker command file allocation of initialization
stack. Maybe a previous linker command file copy and paste problem?
In the start.S the initialization stack is set to a hard coded value.
lm32, m32c, mips, nios2, riscv, sh, v850:
* Remove magic linker command file allocation of initialization stack.
Reuse interrupt stack for initialization stack.
m68k:
* Remove magic linker command file allocation of initialization stack.
Reuse interrupt stack for initialization stack.
powerpc:
* Remove magic linker command file allocation of initialization stack.
Reuse interrupt stack for initialization stack.
* Used dedicated memory region (REGION_RTEMSSTACK) for the interrupt
stack on BSPs using the shared linkcmds.base (replacement for
REGION_RWEXTRA).
sparc:
* Remove the hard coded initialization stack. Use the interrupt stack
for the initialization stack on the boot processor. This saves
16KiB of RAM.
Update #3459.
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Add RTEMS_DEFINE_GLOBAL_SYMBOL() and add RTEMS_DECLARE_GLOBAL_SYMBOL().
Update #3459.
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Check the interrupt stacks of all processors. Set up the interrupt
stack of the current processor for high water testing in the thread
begin extension. This must be done after multi-threading started, since
the initialization stacks may reuse the interrupt stacks. Disable
thread dispatching in SMP configurations to prevent thread migration.
Writing to the interrupt stack is only safe if done from the
corresponding processor in thread context.
Update #3459.
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Update #3459.
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Add rtems_counter_frequency() API function. Use it to initialize the
counter value converter via the new system initialization step
(RTEMS_SYSINIT_CPU_COUNTER). This decouples the counter implementation
and the counter converter. It avoids an unnecessary pull in of the
64-bit integer division from libgcc.
Update #3456.
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Add initialization step for the CPU counter support.
Update #3456.
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Assign each system initialization step a number divisible by 256 to
allow more easily future additions. Keep the order as is.
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An invalid heap usage such as a double free is usually a fatal error
since this indicates a use after free. Replace the use of printk() in
free() with a fatal error.
Update #3437.
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Rename CONFIGURE_SCHEDULER_COUNT to _CONFIGURE_SCHEDULER_COUNT to
emphasise that this is not a user configuration option.
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Rename CONFIGURE_INITIAL_EXTENSION_TABLE to
_CONFIGURE_INITIAL_EXTENSION_TABLE to emphasise that this is not a user
configuration option.
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Update #3358.
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Add support for libbsd initialization.
Update #3419.
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Add support for libbsd initialization.
Update #3419.
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Move FTP client filesystem to separate library libftpfs.a.
Update #3419.
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Move TFTP client filesystem to separate library libtftpfs.a.
Conditionally use legacy network stack features, e.g. BOOTP support.
Update #3419.
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Always build remote TCP support since it depends only on the POSIX
socket API. It works with the legacy network stack and libbsd. Move it
to a separate libdebugger.a library to allow an easy use with libbsd via
"-ldebugger -lbsd" otherwise we would have a cyclic dependency between
libbsd.a and librtemscpu.a.
Update #3419.
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As a side-effect, this fixes some warnings.
Close #3350.
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Update #3325.
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Do not use names derived from scheduler implementation details. Instead
use names derived from the scheduler configuration or documentation.
Provide defines for backward compatibility.
Update #3325.
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Update #3325.
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Close #3320.
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CONFIGURE_HAS_OWN_INIT_TABLE was used both with and without
defining CONFIGURE_RTEMS_INIT_TASKS_TABLE. This rework allows
it to work both ways without warnings.
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Update #2843.
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Update #2843.
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Update #2843.
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Update #2843.
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Update #2843.
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Update #2843.
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Update #2843.
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Update #2843.
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Update #2843.
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Update #2843.
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Update #2843.
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Update #2840.
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Update #2843.
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Update #2843.
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Update #2843.
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Rename PER_CPU_WATCHDOG_MONOTONIC to PER_CPU_WATCHDOG_TICKS. Add new
PER_CPU_WATCHDOG_MONOTONIC which is based on the system uptime (measured
by timecounter).
Close #3264.
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Rename _Watchdog_Realtime_from_*() to _Watchdog_Ticks_from_*().
Update #3264.
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Avoid unnecessary lock acquire/release operations. Get realtime via
timecounter only if necessary.
Update #3264.
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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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Closes @3267.
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