ssekar15 opened a new pull request, #21504:
URL: https://github.com/apache/nuttx/pull/21504
## Summary
The TriCore interrupt path depends on the Infineon iLLD. The interrupt
vector comes from the iLLD IFX_INTERRUPT_INTERNAL macro on GCC and from
the compiler __interrupt/__vector_table keywords on TASKING, and both
build it for CPU0 only. tricore_irq.c programs the service request
control (SRC) registers through IfxSrc and IfxCpu, and TRICORE_SRC2IRQ
takes the SRC base from the iLLD MODULE_SRC.
This series adds the SRC register addresses and bit fields for TC3xx and
TC4xx, writes the SRC registers directly in tricore_irq.c, and replaces the
interrupt vector with a native one per core next to the trap vectors, in
GNU and TASKING assembly. tricore_doirq becomes a plain function entered
with jli. tricore_irq.c and tricore_doirq.c are now free of the iLLD, and
IfxSrc.c is no longer built. interrupt nesting (#21308) can build on top of
it.
## Dependency
Depends on #21496.
## Impact
TriCore only (arch/tricore and the TC397/TC4x9 linker scripts).
- The linker scripts select the native interrupt vector of the configured
core (.intvec_cpuN); its address is unchanged (INTTAB + 0x1FE0).
- IfxSrc.c is dropped from the make and cmake builds, and the TC4xx
SRC_CPU_CPU0_SB/SRC_GPSR00 alias defines are removed.
- No functional change intended: the SRC register values after boot are
the same as before.
No Kconfig, board defconfig or documentation changes.
## Testing
I confirm that changes are verified on local setup and works as intended:
* Build Host(s): Linux x86_64, Debian GNU/Linux 12 (bookworm)
* Toolchains: AURIX GCC 11.3.1 (tricore-elf-gcc), TASKING VX-toolset v6.4r1
(TC3x), TASKING SmartCode v10.4r1 (TC4x)
* Build systems: make, cmake (Ninja)
* Target(s): a2g-tc397-5v-tft:nsh, triboard_tc4x9_com:nsh
* Hardware: TriBoard TC397 V2.0; TriBoard TC4x7 COM V3.0 for the
triboard_tc4x9_com image
* Each commit passes tools/checkpatch.sh. The GCC warning from the iLLD
interrupt macro in tricore_doirq.c (-Wstrict-prototypes) is gone.
Build results (tip):
| Board | GCC make | GCC cmake | TASKING make | TASKING cmake |
|---|---|---|---|---|
| a2g-tc397-5v-tft:nsh | pass | pass | pass | - |
| triboard_tc4x9_com:nsh | pass | - | pass | pass |
The interrupt vector is at 0x80001fe0 in all four images.
Runtime, ostest:
| Board | GCC | TASKING |
|---|---|---|
| TriBoard TC397 (a2g-tc397-5v-tft:nsh) | pass | pass |
| TriBoard TC4x7 (triboard_tc4x9_com:nsh) | pass | wqueue assert, also on
master |
ostest ran with the code of the vector commit (before it was committed,
hence -dirty); the tip, which only drops IfxSrc.c from the build, was boot
tested:
```
nsh> uname -a
NuttX 10.4.0 294043dd767-dirty Nov 5 2026 22:09:37 tricore a2g-tc397-5v-tft
nsh> ostest
...
user_main: Exiting
ostest_main: Exiting with status 0
nsh> uname -a
NuttX 10.4.0 843fff5ed24 Nov 5 2026 22:26:25 tricore a2g-tc397-5v-tft
```
SRC registers read back from the boards after boot, before and after
this series (ASCLIN0 RX, STM, GPSR0 to GPSR5/6 SR0):
```
TC397 before after
0xf0038054: 00110408 00110408
0xf0038300: 000e0407 000e0407
0xf0038990: 001b0001 001b0001
...
0xf0038a30: 00050006 00050006
TC4x7 before after
0xf44322b4: 00800009 00800009
0xf4433460: 00000001 00000001
...
0xf4433520: 00000007 00000007
```
All values match, except that the STM SRC on TC4x7 showed a pending
request (SRR) at the moment it was read, which is timing, not setup.
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