In SMP systems, the interrupt handler may run concurrently with tasks
trying to transmit. Properly protect the transmit state through the
device lock. Simplify the transmit process.
Close#5552.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
These changes eliminate the year 2100 as a limit for TOD. The new
limit is the year 4096. This limit is not due to any RTEMS limitation
but just before the year 4183 when the rounding error in the length
of the year adds up to an entire day. See
https://de.wikipedia.org/wiki/Schaltjahr for details.
There are still limits on Classic APIs which use the 32-bit rtems_interval
type. This corresponds to the Score Watchdog_Interval type. This impacts
delays, timeouts, and Classic API "after" timers.
Closes#5143
Co-authored-by: Joel Sherrill <joel@rtems.org>
Co-authored-by: Gedare Bloom <gedare@rtems.org>
This warning occurs when comparing a signed variable to an unsigned one.
This addresses warnings that only occurred on 64-bit targets. For the
ones which only appeared on 64-bit targets, the cause was frequently
a mismatch when comparing a combination off_t, ssize_t, and int.
This warning occurs when comparing a signed variable to an unsigned one.
This is frequently an int or ssize_t variable compared to a uint32_t or
size_t. Sometimes the size_t is from a sizeof() use.
This adds a backend for flashdev that simulates a flash device with
adjustable delays to simulate real flash devices and offers
configurable flash parameters. This also migrates the JFFS2
filesystem tests to the flashdev framework and eliminates the
purpose-built simulated flash in the testsuite in favor of a more
generic and widely usable solution.
GCC generates type limit warnings when comparison is always true or
always false due to the limited range of the data type, This was in a
termios structure. For most of the cases in RTEMS, this was when
a variable of an unsigned type was compared to be < or <= 0.
Return the actual out of bounds size per page instead of the ioctl
return status. JFFS2 will happily operate with an OOB size of 0 and
instead put cleanmarkers in the normal page space of the flash.
The maximum size of JFFS2 is 4GB minus the block size of the flash.
Enforce this limitation when setting up a filesystem on a flashdev
region that is larger than the maximum.
This also resolves some off-nominal memory leaks.
This adds an API call allowing for unregistration to include destruction
of private data that is not managed by the flashdev framework. This also
updates the existing consumers of flashdev to use the new private data
destructor callback.
Previously this RTC was using the file system-based i2c interface in
/dev. Since the RTC is initialized pretty early on during system init,
we call open() before stdin/stdout/stderr have been opened. RTEMS
assumes that stdin == 0, stdout == 1, etc., and fails when that isn't
the case. In particular, when stdin != 0, RTEMS assumes that it wasn't
configured with a console driver and skips opening stdout/stderr,
leading to confusing issues with the standard I/O streams.
The RTEMS Software Engineering Guide specifies that the SPDX license
annotation shouldbe the first line of the file and not part of the
copyright/license comment block.
GCC currently has issues with false positive warnings about array bounds
violations when the value used as the index is a pointer. This slightly
reworks the code to make it cleaner and to avoid this warning.
Avoid reading from the pl011 data register unnecessarily. There is no
need to preserve the contents of this register as it is not normal
memory. This unnecessary read causes console spam when running under the
Xen hypervisor when the read FIFO is empty since the read is not
expected.
This adds generic JFFS2 interworking code that allows JFFS2 to be used
on top of any flashdev backend. It currently only supports NOR flashdev
backends.
The two RTCs supported by that driver (MCP7940M and EOZ9) use slightly
different register order. Add support for a different order to the
i2c-rtc driver.
This removes the headers imported from the embeddedsw repository in
favor of a much thinner shim. This also removes the complicated build
system configuration necessary to support use of these headers. The
primary reason for removal is that certain external Xilinx libraries
also require use of these headers and this causes version mismatches and
header conflicts that can be avoided.
There is no need to wait on secondary processors for the GIC distributor
enable since the BSPs for real targets start the secondary processors
in _CPU_SMP_Start_processor().
Rename xilinx_zynqmp_rpu BSP variant to zynqmp_rpu_lock_step to
emphasize that this BSP is for the lock-step mode RPU configuration.
Add BSP variants zynqmp_rpu_split_0 and zynqmp_rpu_split_1 for the split
mode RPU configuration for core 0 and 1 respectively.
Add support for the BSP_ARM_GIC_MULTI_PROCESSOR_SECONDARY build option
for the GICv2 support. This option is useful for multiprocessor systems
without SMP support.
- Refactor the pl011 driver to be extensible.
- Add IRQ support and baudrate configuration support for pl011 driver.
- Modify related BSP.
- Add doxygen comments for arm-pl011.
Close#5026
Co-authored-by: Ning Yang <yangn0@qq.com>
Sebastian Huber
Remi Debord
M Mithilesh
Aaron Nyholm
Kinsey Moore
Jeremy Lorelli
Chris Johns
Reinking, Janosch
Christian Mauderer
Utkarsh VermaandNing Yang