Use the targets parameter to determine the targets of the SGI. Change
targets parameter type to 32-bit to ease the parameter passing. GICv3
supports up to 16 targets.
Update #4202.
The zynq-uart set_attributes implementation was configured to always
return false which causes spconsole01 to fail. This restores the
disabled implementation which sets the baud rate registers
appropriately and allows spconsole01 to pass. This also expands the
set_attributes functionality to allow setting of the stop bits,
character width, and parity.
Also start interrupt server tasks on processors which do not have a
scheduler. Applications may dynamically manage processors using
rtems_scheduler_remove_processor() and rtems_scheduler_add_processor().
The strlcpy() function ensures there is always a NUL character
at the end of the string. Hence it is safer as strncpy() and it avoids the
compiler warning
This breaks AArch32-specific portions of the ARM GPT driver into their
own file so that the generic code can be moved for reuse by other
architectures.
Add rtems_interrupt_server_destroy().
Before this patch, the only way to create interrupt servers was
rtems_interrupt_server_initialize(). This function creates the default
interrupt server and in SMP configurations additional interrupt servers
for the additional processors. The interrupt server is heavily used by
libbsd. This includes the epoch based reclamation which performs time
consuming resource and memory deallocation work. This does not work well
with time critical services, for example an UART over SPI or I2C. One
approach to address this problem is to allow the application to create
custom interrupt servers with the right priority and task properties.
The interrupt server API accounted for this, however, it was not
implemented before this patch.
Close#4034.
If we interrupt a thread dispatch critical section (thread dispatch
disable level != ISR nest level), then we should not do the fast idle
mode since this may delay an ongoing system call forever.
CLOCK_DRIVER_ISRS_PER_TICK is the configuration define,
CLOCK_DRIVER_ISRS_PER_TICK_VALUE is the actual value of ISRS per clock
tick, therefore use this one to reset the Clock_driver_isrs after each
tick.
This patch will allow the user to pass a function to calculate
the baud divisor.
This will allow for more flexibility, since for some BSPs
like raspberrypi, the calculation of baud divisor is different
from what is in the current driver.
Use RTEMS_SYSINIT_ORDER_LAST_BUT_5 instead of RTEMS_SYSINIT_ORDER_LAST
to allow applications and support functions to place system
initialization handlers behind the standard handlers.
Update #3838.
The work area initialization was done by the BSP through
bsp_work_area_initialize(). This approach predated the system
initialization through the system initialization linker set. The
workspace and C program heap were unconditionally initialized. The aim
is to support RTEMS application configurations which do not need the
workspace and C program heap. In these configurations, the workspace
and C prgram heap should not get initialized.
Change all bsp_work_area_initialize() to implement _Memory_Get()
instead. Move the dirty memory, sbrk(), per-CPU data, workspace, and
malloc() heap initialization into separate system initialization steps.
This makes it also easier to test the individual initialization steps.
This change adds a dependency to _Heap_Extend() to all BSPs. This
dependency will be removed in a follow up change.
Update #3838.
Resource leak identified by Coverity (CID 1456675). The value
of instances is leaked in case some but not all irq servers are
created. It should be stored in bsp_interrupt_server_instances.
The use case for this function is the libbsd. In FreeBSD, the interrupt
setup and binding to a processor is done in two steps. Message
based interrupts like PCIe MSI and MSI-X interrupts can be implemented
through interrupt server entries. They are setup at the default
interrupt server and may optionally move to an interrupt server bound to
a specific processor.
Move resposibility to disable thread dispatching to the caller of
_SMP_Multicast_action(). Using an interrupt disable for this purpose is
questionable.
Rename _SMP_Get_processor_count() in _SMP_Get_processor_maximum() to be
in line with the API level rtems_scheduler_get_processor_maximum().
Update #3732.
