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Update #3850
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Update #3850
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Update #3850
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Update #3850
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Update #3850
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Update #3850
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Update #3850
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Update #3850
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Update #3850
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Update #3850
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Update #3850
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- Fixes failure of test smpclock01
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The while loop, loops infinitely in case of raw FDT data.
The loop condition (size) is not modified during iterations.
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The following files have been ported
1) ti_pinmux.c
2) ti_pinmux.h
3) am335x_scm_padconf.c
4) am335x_scm_padconf.h
Update #3784
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Detects the SOC type using FDT and also replaces the ti_cpuid.h
header in FreeBSD with custom one.
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This patch imports the beagle pinmux driver from FreeBSD into
RTEMS. Previously this driver was placed in RTEMS-libBSD but
this caused double initialization of few pins once during RTEMS
initialization and second time during libBSD initialization.
The following patches port the driver from FreeBSD to RTEMS and
will remove the driver from RTEMS-libBSD.
RTEMS Ticket Update: #3784
FreeBSD head: ca12b7e9534b10af022fed60c043984dbaf4003d
The following files have been imported from FreeBSD:
1) freebsd/sys/arm/ti/am335x/am335x_scm_padconf.h
2) freebsd/sys/arm/ti/am335x/am335x_scm_padconf.c
3) freebsd/sys/arm/ti/ti_pinmux.h
4) freebsd/sys/arm/ti/ti_pinmux.c
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This patch extends the RTEMS OFW API by adding
rtems_ofw_find_device_by_compat
This function checks if a node has the expected compatible
property.
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Makes it simpler to access the QTMR in an application via a FDT name or
link in an application specific FDT entry.
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Check only for invalid modes if a valid handler is presented to
rtems_signal_catch(). When NULL is used for the handler, ASR processing
is disabled and the mode is not used.
Update #4244.
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Use a common wording for the tests. Use the new templates for action
requirements described in the RTEMS Software Engineering manual.
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Do the ASR and preemption mode change only if requested by the mode
mask. The bug was introduced by
508f868237225a75e566d9fd304206363cfe441d.
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Do not mix checks for different error indicators (RTEMS_NOT_DEFINED and
RTEMS_INVALID_NUMBER). This simplifies the specification of
rtems_semaphore_create().
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Rejecting initially locked MrsP semaphores was due to a limitiation of
the early limitiation of the MrsP protocol. This limitation no longer
exists.
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MrsP semaphores are a generalization of the priority ceiling semaphores
for SMP configurations. Priority ceiling semaphores are required to use
the priority task wait queue discipline. Require this discipline also
for MrsP semaphores.
Close #4347.
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Close #4343.
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Move the CPU time budget to the thread configuration. This simplifies
_Thread_Initialize().
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Run the task create/construct tests also on validation test suite 1
which has exactly one processor configured.
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Signed-off-by: Eshan Dhawan <eshandhawan51@gmail.com>
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Overview
========
The errata is worked around in the kernel without requiring toolchain
modifications. It is triggered the JMPL/RETT return from trap instruction
sequence never generated by the compiler and. There are also other
conditions that must must be true to trigger the errata, for example the
instruction that the trap returns to has to be a JMPL instruction. The
errata can only be triggered if certain data is corrected by ECC
(inflicted by radiation), thus it can not be triggered under normal
operation. For more information see:
www.gaisler.com/notes
Affected RTEMS target BSPs:
* GR712RC
* UT699
* UT700/699E
The work around is enabled by defining __FIX_LEON3_TN0018 at build time.
After applying the following GCC patch, GCC will set the define when
compiling for an affected multilib:
* GR712RC (-mcpu=leon3 -mfix-gr712rc)
* UT700/UT699E (-mpcu=leon3 -mfix-ut700)
* UT699 (-mcpu=leon -mfix-ut699)
When building for another multilib and TN0018 is still required, it
is possible to enable it on the RTEMS kernel configure line using the
TARGET_CFLAGS (-D__FIX_LEON3FT_TN0018) or other by other means.
The following GCC patch sets __FIX_LEON3FT_TN0018 for the affected RTEMS
multilibs:
---------
diff --git a/gcc/config/sparc/rtemself.h b/gcc/config/sparc/rtemself.h
index 6570590..ddec98c 100644
--- a/gcc/config/sparc/rtemself.h
+++ b/gcc/config/sparc/rtemself.h
@@ -33,6 +33,8 @@
builtin_assert ("system=rtems"); \
if (sparc_fix_b2bst) \
builtin_define ("__FIX_LEON3FT_B2BST"); \
+ if (sparc_fix_gr712rc || sparc_fix_ut700 || sparc_fix_ut699) \
+ builtin_define ("__FIX_LEON3FT_TN0018"); \
} \
while (0)
---------
Workaround Implementation
=========================
In general there are two approaches that the workaround uses:
A) avoid ECC restarting the RETT instruction
B) avoid returning from trap to a JMPL instruction
Where A) comes at a higher performance cost than B), so B) is used
where posssible. B) can be achived for certain returns from trap
handlers if trap entry is controlled by assembly, such as system calls.
A)
A special JMPL/RETT sequence where instruction cache is disabled
temporarily to avoid RETT containing ECC errors, and reading of RETT
source registers to "clean" them from incorrect ECC just before RETT
is executed.
B)
The work around prevents JMPL after system calls (TA instruction) and
modifies assembly code on return from traps jumping back to application
code. Note that for some traps the trapped instruction is always
re-executed and can therefore not trigger the errata, for example the
SAVE instruction causing window overflow or an float instruction causing
FPU disabled trap.
RTEMS SPARC traps workaround implementation:
NAME NOTE TRAP COMMENT
* window overflow 1 - 0x05 always returns to a SAVE
* window underflow 1 - 0x06 always returns to a RESTORE
* interrupt traps 2 - 0x10..1f special rett sequence workaround
* syscall 3 - 0x80 shutdown system - never returns
* ABI flush windows 2 - 0x83 special rett sequence workaround
* syscall_irqdis 4 - 0x89
* syscall_irqen 4 - 0x8A
* syscall_irqdis_fp 1 - 0x8B always jumps back to FP instruction
* syscall_lazy_fp_switch 5 - 0x04 A) jumps back to FP instruction, or to
B) _Internal_error() starting with SAVE
Notes:
1) no workaround needed because trap always returns to non-JMPL instruction
2) workaround implemented by special rett sequence
3) no workaround needed because system call never returns
4) workaround implemented by inserting NOP in system call generation. Thus
fall into 1) when workaround is enabled and no trap handler fix needed.
5) trap handler branches into both 1) and returning to _Internal_error()
which starts with a SAVE and besides since it shuts down the system that
RETT should never be in cache (only executed once) so fix not necessary
in this case.
Any custom trap handlers may also have to be updated. To simplify that,
helper work around assembly code in macros are available in a separate
include file <libcpu/grlib-tn-0018.h>.
Close #4155.
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Close #4336.
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Update #4336.
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Not used by the driver itself, but shuold be correct if used by
application.
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Allows user to set SpaceWire run clock divisor for an individual port.
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Without this smp05 and smpthreadlife01 tests may fail
depending on how the boot loader initialized the GPTIMER.
Before the time counter stopped counting when reaching
zero, but tests could work since it could take 2^32 us
before stopping.
The timer driver will potentially overwrite this, but it
happens later due to the initialization order having
RTEMS_SYSINIT_CPU_COUNTER very early.
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Moves drvmgr_drivers[] from amba.c to a separate file in order
to avoid the dependecy on APBUART/GPTIMER drivers. This has
an effect when user configured not to use timer or uart
in their project.
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The descriptor table size is equal to its alignment and set when
configuring the HW IP through VHDL generics. This SW patch simply
probes the HW how large the RX/TX descriptor tables are and adjusts
accordingly.
The number of descriptors actual used are controlled by other
settings (rxDescs and txDescs) controlled by the user.
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Close #4324.
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Update #4324.
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The new GRCAN_FD IP supports CAN FD standard and is mostly backwards
compatible with GRCAN SW interface. The GRCAN driver have been extended
to support the GRCANFD IP using the same driver.
Additional functions have been added that uses a new CAN FD frame
format and read/write/baud-rate functions that supports both GRCANFD
and GRCAN. To keep the SW API fully backwards compatible with GRCAN,
the old functions remain.
Update #4324.
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Update #4324.
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Close #4323.
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Update #4323.
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