walnux: moveout

Fix an issue where netpkt copy would fail due to wrong
return checking condition.

Signed-off-by: Filipe Cavalcanti <filipe.cavalcanti@espressif.com>

.codespellrc

@@ -8,7 +8,6 @@ exclude-file = .codespell-ignore-lines
 # Ignore complete files (e.g. legal text or other immutable material).
 skip =
   LICENSE,
-  */CODEOWNERS,
 
 # Ignore seemingly misspelled words.
 #   lowercase: case insensitive

.github/PULL_REQUEST_TEMPLATE.md

@@ -13,21 +13,9 @@
 
 ## Testing
 
-*This section should provide a detailed description of what you did
+*Update this section with details on how did you verify the change,
-to verify your changes work and do not break existing code.*
+ what Host was used for build (OS, CPU, compiler, ..), what Target was
+ used for verification (arch, board:config, ..), etc. Providing build
+ and runtime logs from before and after change is highly appreciated.*
 
-*Please provide information about your host machine, the board(s) you
-tested your changes on, and how you tested. Logs should be included.*
 
-*For example, when changing something in the core OS functions, you
-may want to run the OSTest application to verify that there are no
-regressions. Changes to ADC code may warrant running the `adc`
-example. Adding a new uORB driver may require that you run
-`uorb_listener` to verify correct operation.*
-
-*Pure documentation changes can just be tested with `make html`
-(see docs) and verification of the correct format in your
-browser.*
-
-**_PRs without testing information will not be accepted. We will
-request test logs._**

.github/workflows/build.yml

@@ -17,10 +17,8 @@ on:
     paths-ignore:
       - 'AUTHORS'
       - 'CONTRIBUTING.md'
-      - '**/CODEOWNERS'
       - 'Documentation/**'
       - 'tools/ci/docker/linux/**'
-      - 'tools/codeowners/*'
   push:
     paths-ignore:
       - 'AUTHORS'
@@ -245,7 +243,7 @@ jobs:
 
       # Released version of Cython has issues with Python 11. Set runner to use Python 3.10
       # https://github.com/cython/cython/issues/4500
-      - uses: actions/setup-python@v6
+      - uses: actions/setup-python@v5
         with:
           python-version: '3.10'
       - name: Run Builds
@@ -306,7 +304,7 @@ jobs:
             zlib-devel
             cmake
             ninja
-            python-pip
+            python-pip 
             vim
 
       - name: pip3 install
@@ -361,7 +359,7 @@ jobs:
       - uses: actions/checkout@v5
       # Set up Python environment and install kconfiglib
       - name: Set up Python and install kconfiglib
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v5
         with:
           python-version: '3.10'
       - name: Install kconfiglib

.github/workflows/doc.yml

@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-python@v6
+      - uses: actions/setup-python@v5
         with:
           python-version: '3.8'
       - name: Generate Documentation

.github/workflows/issue_labeler.yml

@@ -23,7 +23,7 @@ jobs:
       issues: write
     steps:
       - name: Add labels issues automatically based on their body.
-        uses: actions/github-script@v8
+        uses: actions/github-script@v7
         with:
           script: |
             const body = context.payload.issue.body;

Documentation/ReleaseNotes/NuttX-12.11.0

@@ -0,0 +1,390 @@
+NuttX-12.11.0
+------------
+
+What's New In This Release
+Major Changes to Core OS
+Sched
+* [#16554](https://github.com/apache/nuttx/pull/16554) sched: assert: Print Stack pointer value when not within the stack
+* [#16673](https://github.com/apache/nuttx/pull/16673) sched: Fix smp scheduling
+* [#16919](https://github.com/apache/nuttx/pull/16919) sched/init/nx_bringup.c: Add support for CONFIG_INIT_NONE in a flat build
+* [#16927](https://github.com/apache/nuttx/pull/16927) sched/signal: Old signal action need save sa_user
+* [#16481](https://github.com/apache/nuttx/pull/16481) sched/wdog: Replace periodical timer with the wd_start_next.
+* [#16545](https://github.com/apache/nuttx/pull/16545) sched/wqueue: Fix windows compilation errors.
+* [#16593](https://github.com/apache/nuttx/pull/16593) sched/wqueue: Fix windows compilation errors.
+MM
+* [#16617](https://github.com/apache/nuttx/pull/16617) mm: add CONFIG_MM_NODE_GUARDSIZE option
+* [#16653](https://github.com/apache/nuttx/pull/16653) mm/Kasan: Fixed some bugs
+libc
+* [#16568](https://github.com/apache/nuttx/pull/16568) libc: Change atomic_fetch_cxx to macro
+* [#16768](https://github.com/apache/nuttx/pull/16768) libc: fix assert "Free memory from the wrong heap" with flat mode and…
+* [#16713](https://github.com/apache/nuttx/pull/16713) libc/idr: Fix Use-After-Free during idr_destroy()
+* [#16675](https://github.com/apache/nuttx/pull/16675) libc/mcount: add armv6m mcount implementation
+* [#16811](https://github.com/apache/nuttx/pull/16811) libs/libc/netdb: Optimize the DNS timeout calculation logic
+* [#16932](https://github.com/apache/nuttx/pull/16932) libs/libc/semaphore:  allow nxsem_init to negative value
+* [#16614](https://github.com/apache/nuttx/pull/16614) libbuiltin/gcov: Upgrade gcov function
+* [#16786](https://github.com/apache/nuttx/pull/16786) Revert "libs/libc/stdlib/lib_exit.c: fix multiple definition of __dso…
+Tools
+* [#16563](https://github.com/apache/nuttx/pull/16563) tools: Modify refresh.sh to support update all configs from a board
+* [#16650](https://github.com/apache/nuttx/pull/16650) tools/checkpatch.sh: add -x option to auto-format Python files.
+* [#16912](https://github.com/apache/nuttx/pull/16912) tools/checkpatch.sh: check git commit format
+* [#16724](https://github.com/apache/nuttx/pull/16724) tools/espressif: Add risc-v compiler info dump for Espressif devices
+* [#16763](https://github.com/apache/nuttx/pull/16763) tools/nix: Add Nix flake for reproducible dev environment
+* [#16924](https://github.com/apache/nuttx/pull/16924) tools/nix: move nix flakes to tools/
+* [#16831](https://github.com/apache/nuttx/pull/16831) tools/nix: split flake into root and Documentation
+* [#16759](https://github.com/apache/nuttx/pull/16759) tools/nxstyle.c: Updating white list to xedge example
+* [#16855](https://github.com/apache/nuttx/pull/16855) tools/rp{2040,23xx}: Ensure that picotool is found or built
+* [#16667](https://github.com/apache/nuttx/pull/16667) tools/process_config.sh: Fix sed errors
+* [#16546](https://github.com/apache/nuttx/pull/16546) tools/testbuild.ps1: Windows fix the redirect error stream
+* [#16711](https://github.com/apache/nuttx/pull/16711) toolchain/arm: Fix crash caused by clang compiling with -mfpu=fpv5-d16 and -march=armv8.1-m.main+mve.fp+fp.dp
+* [#16709](https://github.com/apache/nuttx/pull/16709) toolchain/arm: Fix link parameter error
+* [#16720](https://github.com/apache/nuttx/pull/16720) toolchain/armclang: Fix armclang config
+
+Build System
+Improvements
+* [#16880](https://github.com/apache/nuttx/pull/16880) arch: Add Cmake build support for raspberrypi-4b board & bcm2711 chip
+* [#16475](https://github.com/apache/nuttx/pull/16475) arch/arm/src/mcx-nxxx/CMakeLists.txt: Aligned Cmake with Make
+* [#16579](https://github.com/apache/nuttx/pull/16579) arch/arm/src/mcx-nxxx/CMakeLists.txt: Aligned Cmake with Make
+* [#16647](https://github.com/apache/nuttx/pull/16647) arch/arm64/fvp-v8r: support cmake compile
+* [#16581](https://github.com/apache/nuttx/pull/16581) arch/risc-v/src/qemu-rv/CMakeLists.txt: removed repeated addition of …
+* [#16477](https://github.com/apache/nuttx/pull/16477) arch/risc-v/src/qemu-rv/CMakeLists.txt: removed repeated addition of the file qemu_rv_userspace.c
+* [#16794](https://github.com/apache/nuttx/pull/16794) arm: CMake build for the i.MX RT series implemented.
+* [#16627](https://github.com/apache/nuttx/pull/16627) Arm32 v8m support cmake clang compile
+* [#16922](https://github.com/apache/nuttx/pull/16922) boards/arm/imxrt: CMake added imxrt1020-evk imxrt1050-evk boards
+* [#16918](https://github.com/apache/nuttx/pull/16918) boards/arm/imxrt: CMake added imxrt1060-evk imxrt1064-evk imxrt1170-evk boards
+* [#16639](https://github.com/apache/nuttx/pull/16639) cmake/arm64:   support clang compile
+* [#16547](https://github.com/apache/nuttx/pull/16547) cmake(bugfix):fix VERSION genarator strip error in CMake build
+* [#16594](https://github.com/apache/nuttx/pull/16594) cmake(bugfix):fix VERSION genarator strip error in CMake build
+* [#16751](https://github.com/apache/nuttx/pull/16751) cmake(bugfix):add default c++ search path
+* [#16897](https://github.com/apache/nuttx/pull/16897) Cmake: add defconfig preprocess capability in Cmake build environment(recursively expand #include)
+* [#16721](https://github.com/apache/nuttx/pull/16721) cmake: enhance the function of cmake nuttx_wildcard_sources
+* [#16867](https://github.com/apache/nuttx/pull/16867) drivers/analog/CMakeLists.txt: Aligned Cmake with Make
+* [#16870](https://github.com/apache/nuttx/pull/16870) drivers/audio/CMakeLists.txt: Aligned Cmake with Make
+* [#16873](https://github.com/apache/nuttx/pull/16873) drivers/ioexpander/CMakeLists.txt: Aligned Cmake with Make
+* [#16871](https://github.com/apache/nuttx/pull/16871) drivers/leds/CMakeLists.txt: Aligned Cmake with Make
+* [#16913](https://github.com/apache/nuttx/pull/16913) drivers/net/CMakeLists.txt: Aligned Cmake with Make
+* [#16620](https://github.com/apache/nuttx/pull/16620) drivers/segger/CMakeLists.txt: Aligned Cmake with Make
+* [#16633](https://github.com/apache/nuttx/pull/16633) drivers/segger/CMakeLists.txt: Aligned Cmake with Make
+* [#16616](https://github.com/apache/nuttx/pull/16616) drivers/sensors/CMakeLists.txt: Aligned Cmake with Make
+* [#16634](https://github.com/apache/nuttx/pull/16634) drivers/sensors/CMakeLists.txt: Aligned Cmake with Make
+* [#16737](https://github.com/apache/nuttx/pull/16737) toolchain/arm64/cmake: Corrected the writing of arm64 cmake search library
+* [#16849](https://github.com/apache/nuttx/pull/16849) Make/Toolchain.defs: add the AR_EXTRACT command
+
+Architectural Support
+Improvements
+ARM
+* [#16806](https://github.com/apache/nuttx/pull/16806) arch/*/*_sigdeliver.c: Fix a race condition is signal delivery for SMP
+* [#16657](https://github.com/apache/nuttx/pull/16657) arch/arm: Add gic lock for GICD_ICFGR RMW operations.
+* [#16881](https://github.com/apache/nuttx/pull/16881) arch/arm: Add missing barriers.h
+* [#16669](https://github.com/apache/nuttx/pull/16669) arch/arm/*/stm32_fdcan_sock.c: prevent interrupt flood on errors.
+* [#16611](https://github.com/apache/nuttx/pull/16611) arch/arm/armv7-a: Support hardware debugpoint to  enhance gdbstub
+* [#16752](https://github.com/apache/nuttx/pull/16752) arch/arm/cxd56xx: Fix bug that causes wake-up by unused gpio interrupt
+* [#16797](https://github.com/apache/nuttx/pull/16797) arch/arm/imxrt: Initial modification to support two USB Controllers
+* [#16478](https://github.com/apache/nuttx/pull/16478) arch/arm/imxrt: Serial add RXDMA support for singlewire mode
+* [#16703](https://github.com/apache/nuttx/pull/16703) arch/arm/rp23xx: Fix gpio  for RP2350B
+* [#16704](https://github.com/apache/nuttx/pull/16704) arch/arm/rp23xx: spi unset peripheral before  to modify Spi parameters
+* [#16837](https://github.com/apache/nuttx/pull/16837) arch/arm/rp2040: Fix typos in ADC and GPIO macro names
+* [#16840](https://github.com/apache/nuttx/pull/16840) arch/arm/rp2040: Implement GPIO output override functionality
+* [#16886](https://github.com/apache/nuttx/pull/16886) arch/arm/rp2040: Silence "LOAD segment with RWX permissions" linker warnings
+* [#16876](https://github.com/apache/nuttx/pull/16876) arch/arm/rp2040: Support pico-sdk 2.2.0
+* [#16842](https://github.com/apache/nuttx/pull/16842) arch/arm/rp2040: Support non-sequential ADC channels and standardize internal function names
+* [#16783](https://github.com/apache/nuttx/pull/16783) arch/arm/samv7: add support for pin to pin compatible pic32cz ca70 series and its evaluation kit
+* [#16901](https://github.com/apache/nuttx/pull/16901) arch/arm/samv7: add support for progmem in PIC32CZ CA70 series
+* [#16907](https://github.com/apache/nuttx/pull/16907) arch/arm/samv7: fix compile warning
+* [#16522](https://github.com/apache/nuttx/pull/16522) arch/arm/samv7: init perf events if enabled
+* [#16572](https://github.com/apache/nuttx/pull/16572) arch/arm/samv7: set correct SPI mode during init
+* [#16465](https://github.com/apache/nuttx/pull/16465) arch/arm/samv7: set correct SPI mode during init
+* [#16541](https://github.com/apache/nuttx/pull/16541) arch/arm/stm32: add STM32 I2C Slave support f…
+* [#16532](https://github.com/apache/nuttx/pull/16532) arch/arm/stm32: add support for ADC trigger from TRGO event
+* [#16534](https://github.com/apache/nuttx/pull/16534) arch/arm/stm32: add support for batch DMA transfer
+* [#16680](https://github.com/apache/nuttx/pull/16680) arch/arm/stm32{h5|h7|l4}/adc: move ADC_MAX_SAMPLES to Kconfig
+* [#16530](https://github.com/apache/nuttx/pull/16530) arch/arm/stm32f0l0g0: add TIMER trigger for ADC
+* [#16514](https://github.com/apache/nuttx/pull/16514) arch/arm/stm32f0l0g0: fix compilation when TIM6/TIM7 is missing
+* [#16589](https://github.com/apache/nuttx/pull/16589) arch/arm/stm32f0l0g0: fix compilation when TIM6/TIM7 is missing
+* [#16810](https://github.com/apache/nuttx/pull/16810) arch/arm/stm32f0l0g0: Fix I2C IRQ numbers
+* [#16543](https://github.com/apache/nuttx/pull/16543) arch/arm/stm32f0l0g0: Improve STM32G0 peripheral config granularity
+* [#16670](https://github.com/apache/nuttx/pull/16670) arch/arm/stm32f0l0g0: move ADC_MAX_SAMPLES to Kconfig
+* [#16513](https://github.com/apache/nuttx/pull/16513) arch/arm/stm32f0l0g0: remove references to CONFIG_STM32F0L0G0_FORCEPOWER
+* [#16557](https://github.com/apache/nuttx/pull/16557) arch/arm/stm32f0l0g0: STM32G0 DMA and ADC Support
+* [#16497](https://github.com/apache/nuttx/pull/16497) arch/arm/stm32f0l0g0: UID support for F0, L0 and C0
+* [#16517](https://github.com/apache/nuttx/pull/16517) arch/arm/stm32f7: Add missing RCC include
+* [#16909](https://github.com/apache/nuttx/pull/16909) arch/arm/stm32f7: Fix "unused variable" warning
+* [#16860](https://github.com/apache/nuttx/pull/16860) arch/arm/stm32f7: Fix I2C4 SDA pin assignment
+* [#16827](https://github.com/apache/nuttx/pull/16827) arch/arm/stm32h7: Fix timer capture upper half driver registration
+* [#16809](https://github.com/apache/nuttx/pull/16809) arch/arm/stm32h7: Port timer capture driver from stm32
+* [#16705](https://github.com/apache/nuttx/pull/16705) arch/arm/stm32h7: support for /dev/random device
+* [#16706](https://github.com/apache/nuttx/pull/16706) arch/arm/STM32H5: Add DMA and ADC DMA support
+* [#16776](https://github.com/apache/nuttx/pull/16776) arch/arm/stm32h5: Add DMA Support to STM32H5 Serial Driver
+* [#16708](https://github.com/apache/nuttx/pull/16708) arch/arm/STM32H5: Add oversampling and resolution support for ADC
+* [#16746](https://github.com/apache/nuttx/pull/16746) arch/arm/stm32h5: Initial Driver for STM32H5 Digital Temperature Sensor (DTS)
+* [#16818](https://github.com/apache/nuttx/pull/16818) arch/arm/stm32h5: Fix STM32H5 FDCAN Driver and Add Test Files
+* [#16803](https://github.com/apache/nuttx/pull/16803) arch/arm/stm32h5: Use double-buffer for ADC DMA in Circular Mode
+* [#16923](https://github.com/apache/nuttx/pull/16923) arch/arm/xmc4 : fix serial buffer size for unused channel
+ARM64
+* [#16612](https://github.com/apache/nuttx/pull/16612) arch/arm64: enable arm64 hardware breakpoints
+* [#16846](https://github.com/apache/nuttx/pull/16846) arch/arm64: Fix signal delivery in EL1 when MMU is enabled
+* [#16826](https://github.com/apache/nuttx/pull/16826) arch/arm64: imx9 add pci dma space and pci outbound space
+* [#16884](https://github.com/apache/nuttx/pull/16884) arch/arm64/gicv3: Improve initialization in warm reboot case
+* [#16743](https://github.com/apache/nuttx/pull/16743) arch/arm64/imx9: add support for imx95
+* [#16727](https://github.com/apache/nuttx/pull/16727) arch/arm64/imx9: eDMA5 Allow sharing with Linux
+* [#16844](https://github.com/apache/nuttx/pull/16844) arch/arm64/imx9: Fix first trace
+* [#16900](https://github.com/apache/nuttx/pull/16900) arch/arm64/imx9: Fix bus reset
+* [#16719](https://github.com/apache/nuttx/pull/16719) arch/arm64/zynq-mpsoc: fix race condition in txint handler
+AVR
+* [#16687](https://github.com/apache/nuttx/pull/16687) arch/avr: do not copy const variables to RAM
+* [#16498](https://github.com/apache/nuttx/pull/16498) arch/avr: fix atomic load functions from arch_atomic.c
+* [#16586](https://github.com/apache/nuttx/pull/16586) arch/avr: fix atomic load functions from arch_atomic.c
+RISC-V
+* [#16692](https://github.com/apache/nuttx/pull/16692) arch/[risc-v/xtensa]: Add SHA accelerator support for esp32[-s2|-s3|-c3|-c6|-h2]
+* [#16694](https://github.com/apache/nuttx/pull/16694) arch/risc-v: Add LP_I2C support for esp32[-c6]
+* [#16683](https://github.com/apache/nuttx/pull/16683) arch/risc-v: Add LPUART support for esp32[-c6]
+* [#16685](https://github.com/apache/nuttx/pull/16685) arch/risc-v: Change DMA functions with common layer for esp32[-c3|-c6|-h2]
+* [#16565](https://github.com/apache/nuttx/pull/16565) arch/risc-v: Fix `rv-virt:nsbi[|64]` defconfigs
+* [#16676](https://github.com/apache/nuttx/pull/16676) arch/risc-v: fix I2C timeout and board compilation requirements
+* [#16921](https://github.com/apache/nuttx/pull/16921) arch/risc-v: Refactor Wi-Fi driver for ESP32-C3|C6
+* [#16485](https://github.com/apache/nuttx/pull/16485) arch/risc-v/mpfs: Add optimized perf timer functions
+* [#16850](https://github.com/apache/nuttx/pull/16850) arch/risc-v/mpfs: fixes for coremmc and emmcsd
+* [#16851](https://github.com/apache/nuttx/pull/16851) arch/risc-v/mpfs: SMP interrupt handling fixes
+* [#16903](https://github.com/apache/nuttx/pull/16903) arch/risc-v/mpfs/mpfs_clockconfig.c: Flag out code only used in b…
+* [#16529](https://github.com/apache/nuttx/pull/16529) arch/risc-v/ricv_exception.c: Dump the process name at exception in user space
+* [#16424](https://github.com/apache/nuttx/pull/16424) arch/risc-v/rp23xx-riscv: Add rp23xx(rp2350)  (Pico 2 board)  RISC-V support
+SIM
+* [#16742](https://github.com/apache/nuttx/pull/16742) arch/sim: avoid host-call being interrupted before getting errno
+TRICORE
+* [#16885](https://github.com/apache/nuttx/pull/16885) arch/tricore: add up_trigger_irq
+* [#16910](https://github.com/apache/nuttx/pull/16910) arch/tricore: fix ld unrecognized option '-g3'
+* [#16917](https://github.com/apache/nuttx/pull/16917) arch/tricore/tricore_irq.c: add up_affinity_irq
+X86_64
+* [#16787](https://github.com/apache/nuttx/pull/16787) arch/x86_64: Allow specifying alternative compilers via CROSSDEV environment variable
+XTENSA
+* [#16804](https://github.com/apache/nuttx/pull/16804) arch/xtensa: Fix a race condition in xtensa_sig_deliver for SMP
+* [#16750](https://github.com/apache/nuttx/pull/16750) arch/xtensa: fix build break if compiler without ISA - XCHAL_HAVE_THREADPTR support
+* [#16686](https://github.com/apache/nuttx/pull/16686) arch/xtensa: Fix dedicated GPIO build error for esp32[-s2|-s3]
+* [#16672](https://github.com/apache/nuttx/pull/16672) arch/xtensa: support more than 32 cpu interrupts
+* [#16744](https://github.com/apache/nuttx/pull/16744) arch/xtensa/esp32: fix esp32(s3)_async_op() asynchronous operation race issue
+* [#16883](https://github.com/apache/nuttx/pull/16883) arch/xtensa/esp32: fix some compilation warnings
+* [#16882](https://github.com/apache/nuttx/pull/16882) arch/xtensa/esp32: fix the issue of erasing a wide range of flash sectors
+* [#16894](https://github.com/apache/nuttx/pull/16894) arch/xtensa/esp32,esp32s3: Start the "spiflash_op" thread with corret affinity
+* [#16878](https://github.com/apache/nuttx/pull/16878) arch/xtensa/esp32s3: Add EXT1 wakeup support in power management
+* [#16756](https://github.com/apache/nuttx/pull/16756) arch/xtensa/esp32s3: Fix bug related to the PSRAM-allocated task stack
+* [#16566](https://github.com/apache/nuttx/pull/16566) arch/xtensa/esp32s3: Fix Esp32S3 LCD FB resolution.
+* [#16603](https://github.com/apache/nuttx/pull/16603) arch/xtensa/esp32s3: Remove LCD Warnings.
+* [#16607](https://github.com/apache/nuttx/pull/16607) arch/xtensa/esp32s3: Remove LCD Warnings.
+* [#16856](https://github.com/apache/nuttx/pull/16856) arch/xtensa/esp32s2: Remove duplicated lines to fix warning
+
+Driver Support
+New Driver Support
+* [#16836](https://github.com/apache/nuttx/pull/16836) drivers/analog/ads7046: Add support for ADS7046 ADC
+* [#16714](https://github.com/apache/nuttx/pull/16714) drivers/input: Create Single Button Multi Actions
+* [#16902](https://github.com/apache/nuttx/pull/16902) drivers/ioexpander: Add support for pcal6416
+* [#16934](https://github.com/apache/nuttx/pull/16934) drivers/ioexpander/aw9523b: New driver for AW9523B i/o expander
+* [#16217](https://github.com/apache/nuttx/pull/16217) drivers/leds: Add support for KTD2052
+* [#16660](https://github.com/apache/nuttx/pull/16660) drivers/net: add IGB network card support
+* [#16623](https://github.com/apache/nuttx/pull/16623) drivers/net: add support for the NCV7410 10BASE-T1S SPI MAC-PHY
+* [#16605](https://github.com/apache/nuttx/pull/16605) drivers/sensors: add Quectel L86-XXX GNSS uORB sensor driver
+* [#16838](https://github.com/apache/nuttx/pull/16838) drivers/sensors/tmp112: Add support for TMP112 temperature sensor
+Improvements
+* [#16715](https://github.com/apache/nuttx/pull/16715) drivers/analog/ads1115.h: Add ioctl for conversion trigger
+* [#16875](https://github.com/apache/nuttx/pull/16875) drivers/can/kvaser_pci: configure number of passes in interrupt handler
+* [#16738](https://github.com/apache/nuttx/pull/16738) drivers/fs:Always use register_mtddriver() to register the MTD device (patch2)
+* [#16914](https://github.com/apache/nuttx/pull/16914) drivers/i2s/i2schar: Implement ioctl commands and blocking read/write operations
+* [#16745](https://github.com/apache/nuttx/pull/16745) drivers/ioexpander/icjx.c: reconfigure icjx after undervoltage
+* [#16729](https://github.com/apache/nuttx/pull/16729) drivers/misc/optee: Cache coherency when MMU is disabled
+* [#16734](https://github.com/apache/nuttx/pull/16734) drivers/misc/optee: expand RPC suppport for IMX9
+* [#16800](https://github.com/apache/nuttx/pull/16800) drivers/misc/optee_smc: Explicitly yield during NW interrupts
+* [#16801](https://github.com/apache/nuttx/pull/16801) drivers/misc/optee_smc: Fix sched_yield() on flat builds
+* [#16473](https://github.com/apache/nuttx/pull/16473) drivers/mtd: fix compile warning
+* [#16577](https://github.com/apache/nuttx/pull/16577) drivers/mtd: fix compile warning
+* [#16789](https://github.com/apache/nuttx/pull/16789) drivers/mtd: introduce nvblk
+* [#16642](https://github.com/apache/nuttx/pull/16642) drivers/mtd/ftl/bch: Add direct writing method for FTL
+* [#16906](https://github.com/apache/nuttx/pull/16906) drivers/net: ksz9477 fixes
+* [#16899](https://github.com/apache/nuttx/pull/16899) drivers/net: Remove NCV7410 driver and corresponding board support
+* [#16661](https://github.com/apache/nuttx/pull/16661) drivers/net: various fixes for e1000 and igc
+* [#16649](https://github.com/apache/nuttx/pull/16649) drivers/net/Kconfig: Move NET_IGC_TXDESC and NET_IGC_RXDESC to NET_IG…
+* [#16526](https://github.com/apache/nuttx/pull/16526) drivers/optee: fix compile break
+* [#16767](https://github.com/apache/nuttx/pull/16767) drivers/pci: epc add dma heap
+* [#16753](https://github.com/apache/nuttx/pull/16753) drivers/segger: Add a kconfig to override Segger SystemView target sources version
+* [#16510](https://github.com/apache/nuttx/pull/16510) drivers/segger: Change SEGGER_RTT_LOCK into rspinlock
+* [#16512](https://github.com/apache/nuttx/pull/16512) drivers/segger: define a macro using a configuration variable
+* [#16805](https://github.com/apache/nuttx/pull/16805) drivers/sensor: Add flags for GNSS satellite
+* [#16764](https://github.com/apache/nuttx/pull/16764) drivers/sensors/l86xxx: Fix driver registration crashes
+* [#16701](https://github.com/apache/nuttx/pull/16701) drivers/sensors/l86xxx: Fix Kconfig options and dependencies
+* [#16821](https://github.com/apache/nuttx/pull/16821) drivers/sensors/l86xxx: Mutex fixes & performance improvements
+* [#16778](https://github.com/apache/nuttx/pull/16778) drivers/sensors/l86xxx: Use uORB GNSS lower-half
+* [#16717](https://github.com/apache/nuttx/pull/16717) drivers/sensors/nau7802: Added frequency control
+* [#16466](https://github.com/apache/nuttx/pull/16466) drivers/serial: fix race conditions
+* [#16573](https://github.com/apache/nuttx/pull/16573) drivers/serial: fix race conditions
+* [#16820](https://github.com/apache/nuttx/pull/16820) drivers/syslog/syslog_channel.c: fix incompatible-pointer-types compile errors
+* [#16677](https://github.com/apache/nuttx/pull/16677) drivers/touchscreen: Add support for mirror/swap
+* [#16788](https://github.com/apache/nuttx/pull/16788) drivers/video: add sched_note_mark at fb_remove_paninfo and fb_notify_vsync
+
+Board Support
+New Board Support
+* [#16443](https://github.com/apache/nuttx/pull/16443) boards/avr/atmega: Added Elegoo Mega2560r3 board
+* [#16781](https://github.com/apache/nuttx/pull/16781) boards/imxrt: Add support to ARCX Socket Grid board
+* [#16558](https://github.com/apache/nuttx/pull/16558) boards/xtensa/esp32s3: add new esp32s3-8048S043 board
+Improvements
+* [#16792](https://github.com/apache/nuttx/pull/16792) boards/arm: Fix Kconfig style
+* [#16663](https://github.com/apache/nuttx/pull/16663) boards/arm/lpc17xx_40xx/lincoln60: Correct defconfig for THTTPD_CGIINBUFFERSIZ spelling
+* [#16833](https://github.com/apache/nuttx/pull/16833) boards/arm/qemu: Change config name of input tool
+* [#16931](https://github.com/apache/nuttx/pull/16931) boards/arm/rp23xx/common: update board reset via BOOTROM functions
+* [#16707](https://github.com/apache/nuttx/pull/16707) boards/arm/stm32f401rc-rs485: Add support to HX711 ADC
+* [#16779](https://github.com/apache/nuttx/pull/16779) boards/arm/stm32f401rc-rs485: Add support to MAX31855 and MAX6675
+* [#16780](https://github.com/apache/nuttx/pull/16780) boards/arm/stm32f4discovery: Add support to HX711 ADC
+* [#16857](https://github.com/apache/nuttx/pull/16857) board/esp: Revert mtdblock registeration
+* [#16866](https://github.com/apache/nuttx/pull/16866) boards/esp32s3: Add SPI slave device support
+* [#16725](https://github.com/apache/nuttx/pull/16725) boards/espressif: add support for SDMMC over SPI for ESP32-C3|C6|H2
+* [#16812](https://github.com/apache/nuttx/pull/16812) boards/imxrt: Fix issues and add USBHOST support to arcx-socket-grid
+* [#16824](https://github.com/apache/nuttx/pull/16824) boards/imxrt/arcx-socket-grid: Remove debug symbols
+* [#16535](https://github.com/apache/nuttx/pull/16535) boards/nucleo-f446re: fix adc example
+* [#16592](https://github.com/apache/nuttx/pull/16592) boards/nucleo-f446re: fix adc example
+* [#16665](https://github.com/apache/nuttx/pull/16665) boards/qemu-armv8a: Add `xedge` example program and documentation
+* [#16659](https://github.com/apache/nuttx/pull/16659) boards/qemu-intel64/qemu.ld: add .lbss, .ldata and .lrodata
+* [#16848](https://github.com/apache/nuttx/pull/16848) boards/risc-v/rp23xx-rv/common: update board reset via BOOTROM functions
+* [#16646](https://github.com/apache/nuttx/pull/16646) boards/riscv-v/esp32c6: Add the NCV7410 10BASE-T1S SPI MAC-PHY support
+* [#16898](https://github.com/apache/nuttx/pull/16898) boards/tricore:  rename tc397 chip board name
+* [#16505](https://github.com/apache/nuttx/pull/16505) boards/xtensa/esp32: Add BLE config to esp32-sparrow
+* [#16602](https://github.com/apache/nuttx/pull/16602) boards/xtensa: support SDMMC over SPI on ESP32|S2|S3
+* [#16638](https://github.com/apache/nuttx/pull/16638) boards/xtensa/esp32s3/esp32s3-box: Fix ILI9342C color inversion
+* [#16681](https://github.com/apache/nuttx/pull/16681) boards/weact-stm32h743 Add sdcard support
+* [#16785](https://github.com/apache/nuttx/pull/16785) boards/weact-stm32h743: Add support to ST7735 display
+
+File System
+ Improvements
+* [#16722](https://github.com/apache/nuttx/pull/16722) fs/block_proxy: fix the issue of the refs count for filep being zeroed out by utilizing dup2
+* [#16938](https://github.com/apache/nuttx/pull/16938) fs/fat: Fix wrong alloc used in fat_zero_cluster()
+* [#16536](https://github.com/apache/nuttx/pull/16536) fs/fcntl: using ioctl to implement FIOGCLEX/FIOCLEX/FIONCLEX
+* [#16832](https://github.com/apache/nuttx/pull/16832) fs/lock: Allow driver lock
+* [#16598](https://github.com/apache/nuttx/pull/16598) fs/procfs: fix output format of fd info
+* [#16518](https://github.com/apache/nuttx/pull/16518) fs/smartfs: Fix a fatal bug about sector writing after seek
+* [#16590](https://github.com/apache/nuttx/pull/16590) fs/smartfs: Fix a fatal bug about sector writing after seek
+* [#16490](https://github.com/apache/nuttx/pull/16490) fs/vfs: check if all `iov_base` are accessible
+* [#16584](https://github.com/apache/nuttx/pull/16584) fs/vfs: check if all iov_base are accessible
+* [#16609](https://github.com/apache/nuttx/pull/16609) fs/vfs: clear filep when call file_open/file_mq_open to avoid random value[bug fix]
+* [#16538](https://github.com/apache/nuttx/pull/16538) fs/vfs/fs_close.c: avoid double free if CONFIG_FS_NOTIFY is set
+* [#16455](https://github.com/apache/nuttx/pull/16455) fs/vfs/fs_rename: fix directory move operation.
+
+Networking
+Improvements
+* [#16926](https://github.com/apache/nuttx/pull/16926) include/net/if.h: Add mechanism for MMD access with SIOCxMIIREG ioctls
+* [#16628](https://github.com/apache/nuttx/pull/16628) net: Enable TCP/IP backlog by default
+* [#16684](https://github.com/apache/nuttx/pull/16684) net/arp: avoid unnecessary ARP requests
+* [#16905](https://github.com/apache/nuttx/pull/16905) net/can: fixes and cleanups
+* [#16682](https://github.com/apache/nuttx/pull/16682) net/local: correct shutdown state when use UDP mode (To fix issue: https://github.com/apache/nuttx/issues/16555)
+* [#16494](https://github.com/apache/nuttx/pull/16494) net/utils: avoid unalign access g_tcp_connections_buffer
+* [#16585](https://github.com/apache/nuttx/pull/16585) net/utils: avoid unalign access g_tcp_connections_buffer
+* [#16599](https://github.com/apache/nuttx/pull/16599) netdb/lib_dnsquery.c: prevent file descriptor leakage
+* [#16606](https://github.com/apache/nuttx/pull/16606) netdb/lib_dnsquery.c: In the IPv6 or IPv4 dns_query_callback() block,…
+
+Unsorted contributions
+* [#16644](https://github.com/apache/nuttx/pull/16644) espressif: update lower-half drivers
+* [#16467](https://github.com/apache/nuttx/pull/16467) audio/comp: fix build warning caused by invalid return value
+* [#16469](https://github.com/apache/nuttx/pull/16469) mcx-nxxx: Add LPI2C driver for mcx-nxxx architecture
+* [#16474](https://github.com/apache/nuttx/pull/16474) syslog/rpmsg: disable force put char to lower putc
+* [#16479](https://github.com/apache/nuttx/pull/16479) sensors/nau7802: Fix format warning
+* [#16482](https://github.com/apache/nuttx/pull/16482) Fix i.MX93 ENET1 (EMAC) TXC muxing and RGMII-ID setting
+* [#16483](https://github.com/apache/nuttx/pull/16483) Segger sysview improvements
+* [#16486](https://github.com/apache/nuttx/pull/16486) add spin_lock_irqsave_nopreempt rspin_lock_irqsave_noprempt implement.
+* [#16487](https://github.com/apache/nuttx/pull/16487) Fix arch perf events ifdef in alarm
+* [#16489](https://github.com/apache/nuttx/pull/16489) Added support obtaining the unique id for the stm32f0l0g0 family
+* [#16491](https://github.com/apache/nuttx/pull/16491) espressif[risc-v|xtensa]: Check events when reading PCNT counter value
+* [#16492](https://github.com/apache/nuttx/pull/16492) add FDCAN support for STM32C0
+* [#16493](https://github.com/apache/nuttx/pull/16493) RFC 5424 implementation for SYSLOG
+* [#16495](https://github.com/apache/nuttx/pull/16495) minor stream improvement
+* [#16496](https://github.com/apache/nuttx/pull/16496) improve libc/stream subsystem
+* [#16500](https://github.com/apache/nuttx/pull/16500) Add ADC support for STM32G0 (along with oversampling)
+* [#16508](https://github.com/apache/nuttx/pull/16508) riscv qemu-rv: fix kernel mapping by enabling CONFIG_MM_KMAP in knsh
+* [#16509](https://github.com/apache/nuttx/pull/16509) Update the ELF guides
+* [#16511](https://github.com/apache/nuttx/pull/16511) nuttx/spinlock: Define empty macro for spin_unlock
+* [#16519](https://github.com/apache/nuttx/pull/16519) imx9/smp: Add SMP support for imx93
+* [#16527](https://github.com/apache/nuttx/pull/16527) nxgdb/fs: fix exception when failed to parse symbol
+* [#16533](https://github.com/apache/nuttx/pull/16533) Update MCUBoot build process for Espressif devices
+* [#16540](https://github.com/apache/nuttx/pull/16540) qemu/armv8a: fastboot tcp defconfig + documentation.
+* [#16549](https://github.com/apache/nuttx/pull/16549) Minor improve to stream
+* [#16550](https://github.com/apache/nuttx/pull/16550) gitignore: add more vim swap files
+* [#16552](https://github.com/apache/nuttx/pull/16552) spinlock: Better recursive spinlock implementation.
+* [#16556](https://github.com/apache/nuttx/pull/16556) risc-v/mmu: Fix map_region() for incorrect page table setup when vadd…
+* [#16562](https://github.com/apache/nuttx/pull/16562) esp32s3: update config and doc for fastboot
+* [#16567](https://github.com/apache/nuttx/pull/16567) Move assemble soure files out off gnu folder
+* [#16569](https://github.com/apache/nuttx/pull/16569) Refine vfs source file layout
+* [#16571](https://github.com/apache/nuttx/pull/16571) remove warnings
+* [#16574](https://github.com/apache/nuttx/pull/16574) audio/comp: fix build warning caused by invalid return value
+* [#16578](https://github.com/apache/nuttx/pull/16578) syslog/rpmsg: disable force put char to lower putc
+* [#16580](https://github.com/apache/nuttx/pull/16580) mcx-nxxx: Add LPI2C driver for mcx-nxxx architecture
+* [#16582](https://github.com/apache/nuttx/pull/16582) sensors/nau7802: Fix format warning
+* [#16583](https://github.com/apache/nuttx/pull/16583) Fix i.MX93 ENET1 (EMAC) TXC muxing and RGMII-ID setting
+* [#16588](https://github.com/apache/nuttx/pull/16588) riscv qemu-rv: fix kernel mapping by enabling CONFIG_MM_KMAP in knsh …
+* [#16591](https://github.com/apache/nuttx/pull/16591) Update MCUBoot build process for Espressif devices
+* [#16595](https://github.com/apache/nuttx/pull/16595) risc-v/mmu: Fix map_region() for incorrect page table setup when vadd…
+* [#16596](https://github.com/apache/nuttx/pull/16596) Fix arch perf events ifdef in alarm 
+* [#16597](https://github.com/apache/nuttx/pull/16597) fix framebuffer config resolution.
+* [#16604](https://github.com/apache/nuttx/pull/16604) [ESP32S3] Add LCD defconfig
+* [#16615](https://github.com/apache/nuttx/pull/16615) debug/0 address: Add 0 address access panic configuration
+* [#16618](https://github.com/apache/nuttx/pull/16618) Enhanced Kasan
+* [#16619](https://github.com/apache/nuttx/pull/16619) arm64/v8r: support clang compilation
+* [#16629](https://github.com/apache/nuttx/pull/16629) bugfix: share kernel thread group should not dup files from caller group
+* [#16635](https://github.com/apache/nuttx/pull/16635) Add a header file as a dependency
+* [#16651](https://github.com/apache/nuttx/pull/16651) Refactored the btuart_rxwork function to improve data reception stability.
+* [#16654](https://github.com/apache/nuttx/pull/16654) imx9/lpuart: Fix race condition / regression in imx9_txint
+* [#16671](https://github.com/apache/nuttx/pull/16671) sem/trywait/atomic: Fix the try wait abort by interrupted caused false failure report.
+* [#16674](https://github.com/apache/nuttx/pull/16674) xtensa/espressif: Change LEDC implementation to common one
+* [#16690](https://github.com/apache/nuttx/pull/16690) coredump: Fix missing loglevel to logmask conversion
+* [#16700](https://github.com/apache/nuttx/pull/16700) sensors/bmi160,270: Fix a bug sensor_time is truncated
+* [#16718](https://github.com/apache/nuttx/pull/16718) arm64/qemu: decouple qemu board from chip
+* [#16735](https://github.com/apache/nuttx/pull/16735) espressif: fix MCUBoot OTA on Espressif devices.
+* [#16754](https://github.com/apache/nuttx/pull/16754) espressif: PCNT: add high and low limit Kconfig options
+* [#16765](https://github.com/apache/nuttx/pull/16765) nucleo-h743zi: Add ADC2 support and expand ADC channel list
+* [#16769](https://github.com/apache/nuttx/pull/16769) esp32s3_extraheaps.c: add a missing include for xtensa_imm_initialize
+* [#16771](https://github.com/apache/nuttx/pull/16771) crypto/cryptosoft: fix aadlen used uninitialized warning
+* [#16773](https://github.com/apache/nuttx/pull/16773) add esp32s3-devkit:mbedtls kconfig
+* [#16798](https://github.com/apache/nuttx/pull/16798) arm64: porting mu drv and scmi from arm imx9
+* [#16807](https://github.com/apache/nuttx/pull/16807) bugix/risc-v/esp32c6: Fix build error of LP_I2C
+* [#16813](https://github.com/apache/nuttx/pull/16813) Fix compilation errors with c++
+* [#16819](https://github.com/apache/nuttx/pull/16819) Increase buffer sizes for uORB devices
+* [#16830](https://github.com/apache/nuttx/pull/16830) h743zi/capture: add doc, defconfig & update make pipeline
+* [#16839](https://github.com/apache/nuttx/pull/16839) crypto/hmac: Fix typo in function implementation names
+* [#16843](https://github.com/apache/nuttx/pull/16843) pci: epf test default a function
+* [#16845](https://github.com/apache/nuttx/pull/16845) sys/socket.h: wrap the outer layer of struct sockaddr_storage with aligned(SS_ALIGNSIZE)
+* [#16852](https://github.com/apache/nuttx/pull/16852) risc-v/mpfs: usb: don't try nonexistent ep int flags
+* [#16853](https://github.com/apache/nuttx/pull/16853) Mpfs map mtime in userspace
+* [#16874](https://github.com/apache/nuttx/pull/16874) Add missing PSE52 interfaces
+* [#16879](https://github.com/apache/nuttx/pull/16879) include/nuttx/compiler.h:
+
+Compatibility Concerns
+* [#16499](https://github.com/apache/nuttx/pull/16499) [BREAKING] fs/vfs: Separate file descriptors from file descriptions
+
+This PR is a rework of the NuttX file descriptor implementation. The goal is two-fold:
+
+Improve POSIX compliance. The old implementation tied file description
+to inode only, not the file struct. POSIX however dictates otherwise.
+Fix a bug with descriptor duplication (dup2() and dup3()). There is
+an existing race condition with this POSIX API that currently results
+in a kernel side crash.
+The crash occurs when a partially open / closed file descriptor is
+duplicated. The reason for the crash is that even if the descriptor is
+closed, the file might still be in use by the kernel (due to e.g. ongoing
+write to file). The open file data is changed by file_dup3() and this
+causes a crash in the device / drivers themselves as they lose access to
+the inode and private data.
+
+The fix is done by separating struct file into file and file descriptor
+structs. The file struct can live on even if the descriptor is closed,
+fixing the crash. This also fixes the POSIX issue, as two descriptors
+can now point to the same file.
+
+The implementation of this PR is based on the modifications made in #16361.
+Thank you @pussuw
+
+DEPENDS ON: apache/nuttx-apps#3091
+
+IMPACT
+
+Remove the FS_REFCOUNT config because reference counting is a very necessary feature
+that is required in many scenarios to ensure stability.
+Rename the functions fs_getfilep, fs_putfilep, and fs_reffilep to file_get, file_put,
+and file_ref respectively, to unify the naming convention to file_xxx, such as file_open,
+ file_ioctl, etc.
+Introduce a new fd (file descriptor) structure. If multiple file descriptors (fds) are in
+ a dup relationship, they can share the same file entity to implement the dup functionality.
+Modify the functions nx_close_from_tcb, nx_open_from_tcb, nx_dup2_from_tcb,
+and nx_dup3_from_tcb to fdlist_open, fdlist_close, fdlist_dup2, and fdlist_dup3 respectively,
+ to uniformly operate on file descriptors using fdlist.

Documentation/applications/netutils/ntpclient/index.rst

@@ -2,174 +2,5 @@
 ``ntpclient`` NTP client
 ========================
 
-The NTP (Network Time Protocol) client is a network utility that synchronizes
+This is a fragmentary NTP client. It neither well-tested nor
-the system clock with time servers over the Internet. This implementation
+mature nor complete at this point in time.
-provides a minimal but functional NTP client for NuttX.
-
-What is NTP?
-============
-
-The Network Time Protocol (NTP) is a networking protocol designed to
-synchronize clocks of computer systems over packet-switched, variable-latency
-data networks. NTP is one of the oldest Internet protocols still in use,
-originally designed by David L. Mills of the University of Delaware.
-
-Key features of NTP:
-
-- **High Precision**: NTP can achieve sub-millisecond accuracy on local area
-  networks and typically 10-100 millisecond accuracy over the Internet
-- **Robust Algorithm**: Uses sophisticated algorithms to filter out network
-  jitter and select the best time sources
-- **Hierarchical Structure**: Uses a stratum system where stratum 0 devices
-  are atomic clocks, stratum 1 servers sync with stratum 0, and so on
-- **Fault Tolerance**: Can handle multiple time sources and automatically
-  switch between them
-
-NTP Protocol Overview
-=====================
-
-NTP uses UDP port 123 and follows a client-server model. The protocol
-exchanges timestamps to calculate:
-
-- **Offset**: The difference between the client's clock and the server's clock
-- **Delay**: The round-trip network delay
-- **Dispersion**: The maximum error due to clock frequency tolerance
-
-The NTP packet format (version 3) includes:
-
-- **Leap Indicator**: Warns of an impending leap second
-- **Version Number**: NTP version (3 in this implementation)
-- **Mode**: Client, server, broadcast, etc.
-- **Stratum**: Clock level (0-15)
-- **Poll Interval**: Maximum interval between successive messages
-- **Precision**: Clock precision
-- **Root Delay/Dispersion**: Total delay and dispersion to the reference clock
-- **Reference Identifier**: Identifies the reference source
-- **Reference Timestamp**: Time when the system clock was last set
-- **Originate Timestamp**: Time when the request departed the client
-- **Receive Timestamp**: Time when the request arrived at the server
-- **Transmit Timestamp**: Time when the reply departed the server
-
-Implementation Details
-======================
-
-The NuttX NTP client implementation consists of several key components:
-
-Source Code Structure
----------------------
-
-**ntpclient.c** - Main implementation file containing:
-
-- **Daemon Management**: Functions to start, stop, and manage the NTP daemon
-- **Time Synchronization**: Core algorithms for calculating clock offset and delay
-- **Network Communication**: UDP socket handling and NTP packet exchange
-- **Sample Collection**: Gathering multiple time samples for statistical filtering
-
-**ntpv3.h** - NTP version 3 packet format definitions:
-
-- **ntp_datagram_s**: Complete NTP packet structure
-- **ntp_timestamp_s**: 64-bit NTP timestamp format
-- **Protocol Constants**: NTP version, modes, and stratum definitions
-
-Key Functions
--------------
-
-- **ntpc_start_with_list()**: Starts the NTP daemon with a list of servers
-- **ntpc_start()**: Starts the NTP daemon with default configuration
-- **ntpc_stop()**: Stops the running NTP daemon
-- **ntpc_status()**: Retrieves current synchronization status and samples
-- **ntpc_daemon()**: Main daemon loop that:
-
-  - Connects to configured NTP servers
-  - Sends NTP requests and processes responses
-  - Calculates clock offset and delay
-  - Applies time corrections to the system clock
-  - Continues polling at configured intervals
-
-- **ntpc_get_ntp_sample()**: Performs a single NTP transaction:
-
-  - Creates UDP socket to NTP server
-  - Sends NTP request packet with current timestamp
-  - Receives and validates NTP response
-  - Calculates offset and delay using NTP algorithms
-
-- **ntpc_calculate_offset()**: Implements the NTP clock filter algorithm
-
-  - Uses four timestamps, calculates offset and delay
-  - Applies statistical filtering to reduce jitter
-
-- **ntpc_settime()**: Applies time correction to system clock:
-
-  - Uses calculated offset to adjust system time
-  - Handles both positive and negative time adjustments
-  - Maintains monotonic clock consistency
-
-Configuration Options
-=====================
-
-The NTP client can be configured through Kconfig options:
-
-- **CONFIG_NETUTILS_NTPCLIENT_SERVER**: List of NTP server hostnames
-- **CONFIG_NETUTILS_NTPCLIENT_PORTNO**: NTP server port (default: 123)
-- **CONFIG_NETUTILS_NTPCLIENT_STACKSIZE**: Daemon task stack size
-- **CONFIG_NETUTILS_NTPCLIENT_SERVERPRIO**: Daemon task priority
-- **CONFIG_NETUTILS_NTPCLIENT_STAY_ON**: Keep polling continuously
-- **CONFIG_NETUTILS_NTPCLIENT_POLLDELAYSEC**: Polling interval in seconds
-- **CONFIG_NETUTILS_NTPCLIENT_NUM_SAMPLES**: Number of samples for filtering
-- **CONFIG_NETUTILS_NTPCLIENT_TIMEOUT_MS**: Network timeout in milliseconds
-
-Usage
-=====
-
-The NTP client is typically used through the system commands:
-
-.. note:: The NTP client functionality requires enabling the :code:`SYSTEM_NTPC` option in your configuration.
-    Make sure to select this option in menuconfig or your Kconfig fragment before building.
-
-- **ntpcstart**: Start the NTP daemon
-- **ntpcstop**: Stop the NTP daemon
-- **ntpcstatus**: Display synchronization status
-
-Example workflow:
-
-1. Configure network connectivity
-2. Start NTP client: ``ntpcstart``
-3. Check status: ``ntpcstatus``
-4. Verify time: ``date`` command
-5. Stop when needed: ``ntpcstop``
-
-The client will automatically:
-- Connect to configured NTP servers
-- Exchange time information
-- Calculate and apply clock corrections
-- Continue periodic synchronization
-
-Limitations
-===========
-
-This is a minimal NTP client implementation with some limitations:
-
-- **No Authentication**: Does not support NTP authentication (MD5/SHA1)
-- **Basic Filtering**: Uses simple statistical filtering, not full NTP algorithms
-- **Single Reference**: Does not implement full NTP reference clock selection
-- **No Leap Seconds**: Does not handle leap second announcements
-- **Limited Error Handling**: Basic error recovery and retry mechanisms
-
-Despite these limitations, the implementation provides sufficient accuracy
-for most embedded applications requiring network time synchronization.
-
-Dependencies
-============
-
-The NTP client requires:
-
-- **CONFIG_NET**: Network support
-- **CONFIG_NET_UDP**: UDP protocol support
-- **CONFIG_NET_SOCKOPTS**: Socket options support
-- **CONFIG_LIBC_NETDB**: DNS resolution (recommended)
-- **CONFIG_HAVE_LONG_LONG**: 64-bit integer support
-
-For best results, ensure:
-- Stable network connectivity
-- Access to reliable NTP servers
-- Sufficient system resources for daemon operation

Documentation/applications/system/ntpc/index.rst

@@ -1,106 +1,3 @@
 ============================
 ``ntpc`` NTP Daemon Commands
 ============================
-
-This example demonstrates how to use the NTP client to synchronize system time
-and retrieve the current time and date. It uses the Network Time Protocol (NTP)
-to provide accurate time synchronization.
-
-Description
------------
-
-The ntpc example:
-
-- Uses the NTP client library to synchronize system time
-
-- Connects to NTP servers (default: pool.ntp.org)
-
-- Starts the NTP client in the background for continuous synchronization
-
-- Provides commands to check status and stop the NTP client
-
-- Allows management of the NTP client through command line options
-
-Note: This example assumes that network connectivity is already established.
-
-The NTP (Network Time Protocol) is a sophisticated protocol that provides
-high-precision time synchronization and is the standard for network time services.
-
-Configuration
--------------
-
-This example requires the following NuttX configuration options:
-
-- CONFIG_NET: Enable networking support
-- CONFIG_NET_UDP: Enable UDP support
-- CONFIG_NETUTILS_NTPCLIENT: Enable NTP client support
-- CONFIG_SYSTEM_NTPC: Enable this example
-
-Additional configuration options:
-- CONFIG_NETUTILS_NTPCLIENT_SERVER: NTP server hostname (default: "pool.ntp.org")
-
-Usage
------
-
-1. Configure your NuttX build with networking support
-2. Ensure network connectivity is established (e.g., via NSH network commands)
-3. Build and flash the image to your target board
-4. Run the commands:
-   - ``ntpcstart``, ``ntpcstop``, ``ntpcstatus``
-
-**Available Commands:**
-
-- ``ntpcstart`` - Start NTP client in background
-
-- ``ntpcstop`` - Stop the NTP client
-
-- ``ntpcstatus`` - Display NTP client status information
-
-Expected Output
----------------
-
-**Start NTP client (ntpcstart):**
-::
-
-   Starting NTP client...
-   Using NTP servers: pool.ntp.org
-   NTP client started successfully (task ID: 123)
-   NTP client is now running in the background
-
-**Stop NTP client (ntpcstop):**
-::
-
-   Stopping NTP client...
-   Stopped the NTP daemon
-
-**Show NTP status (ntpcstatus):**
-::
-
-    The number of last samples: 3
-    [0] srv <ip> offset -0.033502142 delay 0.249973549
-    [1] srv <ip> offset -0.020698070 delay 0.029928000
-    [2] srv <ip> offset -0.015448935 delay 0.019815119
-
-**Verify using date command:**
-
-Given network connectivity is available, executing `date` should
-give the proper time and date.
-::
-
-    nsh> ntpcstart
-    Starting NTP client...
-    Using NTP servers: 0.pool.ntp.org;1.pool.ntp.org;2.pool.ntp.org
-    NTP client started successfully (task ID: 10)
-    NTP client is now running in the background
-    nsh> date
-    Fri, Sep 05 18:49:37 2025
-
-Notes
------
-
-- This example requires internet connectivity
-- Network must be configured and connected before running this example
-- NTP servers must be accessible (default: pool.ntp.org)
-- UDP port 123 (NTP) must not be blocked by firewalls
-- The example includes error handling for network failures
-- NTP provides more accurate time synchronization than simple time protocols

Documentation/contributing/making-changes.rst

@@ -265,21 +265,6 @@ squash before submitting the Pull Request:
    happy, they may suggest squashing and merging again to make a single commit. In this case you would repeat steps
    1 through 6.
 
-   .. note::
-
-      NuttX uses a ``CODEOWNERS`` file to help track which users are "experts"
-      on certain NuttX subsystems. Sometimes, this will result in certain
-      reviewers being automatically requested to review your PR if you have
-      modified a file they are marked as a "code owner" for. This is just to
-      help contributors get more relevant reviews from someone who knows the
-      subject area.
-
-      If you've created a new file, let's say for a driver, you can add yourself
-      as a code owner for that file by modifying ``.github/CODEOWNERS``. Read
-      the `GitHub documentation for CODEOWNERS
-      <https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners>`_
-      for more information.
-
 How to Include the Suggestions on Your Pull Request?
 ====================================================
 

Documentation/platforms/arm/imxrt/boards/arcx-socket-grid/index.rst

@@ -90,14 +90,3 @@ Configures the NuttShell (nsh) located at examples/nsh.  This NSH
 configuration is focused on low level, command-line driver testing.
 Built-in applications are supported, but none are enabled.  This
 configuration does not support a network.
-
-usbdisk
--------
-
-This board profile allows to use USB Thumb driver connected to USB port.
-Typically the device will be recognized and created at /dev/sda. The
-user could mount it this way::
-
-    nsh> mount -t vfat /dev/sda /mnt
-
-Note: It is assumed that the USB Flash drive was formatted as FAT32.

Documentation/platforms/risc-v/esp32c3/boards/esp32c3-generic/index.rst

@@ -153,6 +153,21 @@ You can check that the sensor is working by using the ``bmp180`` application::
     Pressure value = 91526
     Pressure value = 91525
 
+buttons
+-------
+
+This configuration shows the use of the buttons subsystem. It can be used by executing
+the ``buttons`` application and pressing the ``BOOT`` button on the board::
+
+    nsh> buttons
+    buttons_main: Starting the button_daemon
+    buttons_main: button_daemon started
+    button_daemon: Running
+    button_daemon: Opening /dev/buttons
+    button_daemon: Supported BUTTONs 0x01
+    nsh> Sample = 1
+    Sample = 0
+
 coremark
 --------
 

Documentation/platforms/risc-v/esp32c3/index.rst

@@ -600,115 +600,6 @@ to ``Application image secondary slot``.
    **After disabling UART Download Mode you will not be able to flash other images through UART.**
 
 
-Flash Allocation for MCUBoot
-----------------------------
-
-When MCUBoot is enabled on ESP32-C3, the flash memory is organized as follows
-based on the default KConfig values:
-
-**Flash Layout (MCUBoot Enabled)**
-
-.. list-table::
-   :header-rows: 1
-   :widths: 40 20 20
-   :align: left
-
-   * - Region
-     - Offset
-     - Size
-   * - Bootloader
-     - 0x000000
-     - 64KB
-   * - E-Fuse Virtual (see Note)
-     - 0x010000
-     - 64KB
-   * - Primary Application Slot (/dev/ota0)
-     - 0x020000
-     - 1MB
-   * - Secondary Application Slot (/dev/ota1)
-     - 0x120000
-     - 1MB
-   * - Scratch Partition (/dev/otascratch)
-     - 0x220000
-     - 256KB
-   * - Storage MTD (optional)
-     - 0x260000
-     - 1MB
-   * - Available Flash
-     - 0x360000+
-     - Remaining
-
-.. raw:: html
-
-   <div style="clear: both"></div>
-
-
-**Note**: The E-Fuse Virtual region is optional and only used when
-``ESPRESSIF_EFUSE_VIRTUAL_KEEP_IN_FLASH`` is enabled. However, this 64KB
-location is always allocated in the memory layout to prevent accidental
-erasure during board flashing operations, ensuring data preservation if
-virtual E-Fuses are later enabled.
-
-.. code-block:: text
-
-    Memory Map (Addresses in hex):
-
-    0x000000  ┌─────────────────────────────┐
-              │                             │
-              │      MCUBoot Bootloader     │
-              │           (64KB)            │
-              │                             │
-    0x010000  ├─────────────────────────────┤
-              │       E-Fuse Virtual        │
-              │           (64KB)            │
-    0x020000  ├─────────────────────────────┤
-              │                             │
-              │      Primary App Slot       │
-              │            (1MB)            │
-              │          /dev/ota0          │
-              │                             │
-    0x120000  ├─────────────────────────────┤
-              │                             │
-              │     Secondary App Slot      │
-              │            (1MB)            │
-              │          /dev/ota1          │
-              │                             │
-    0x220000  ├─────────────────────────────┤
-              │                             │
-              │      Scratch Partition      │
-              │           (256KB)           │
-              │       /dev/otascratch       │
-              │                             │
-    0x260000  ├─────────────────────────────┤
-              │                             │
-              │   Storage MTD (optional)    │
-              │            (1MB)            │
-              │                             │
-    0x360000  ├─────────────────────────────┤
-              │                             │
-              │       Available Flash       │
-              │         (Remaining)         │
-              │                             │
-              └─────────────────────────────┘
-
-The key KConfig options that control this layout:
-
-- ``ESPRESSIF_OTA_PRIMARY_SLOT_OFFSET`` (default: 0x20000)
-- ``ESPRESSIF_OTA_SECONDARY_SLOT_OFFSET`` (default: 0x120000)
-- ``ESPRESSIF_OTA_SLOT_SIZE`` (default: 0x100000)
-- ``ESPRESSIF_OTA_SCRATCH_OFFSET`` (default: 0x220000)
-- ``ESPRESSIF_OTA_SCRATCH_SIZE`` (default: 0x40000)
-- ``ESPRESSIF_STORAGE_MTD_OFFSET`` (default: 0x260000 when MCUBoot enabled)
-- ``ESPRESSIF_STORAGE_MTD_SIZE`` (default: 0x100000)
-
-For MCUBoot operation:
-
-- The **Primary Slot** contains the currently running application
-- The **Secondary Slot** receives OTA updates
-- The **Scratch Partition** is used by MCUBoot for image swapping during updates
-- MCUBoot manages image validation, confirmation, and rollback functionality
-
-
 _`Managing esptool on virtual environment`
 ==========================================
 

Documentation/platforms/risc-v/esp32c6/boards/esp32c6-devkitc/index.rst

@@ -120,6 +120,21 @@ You can check that the sensor is working by using the ``bmp180`` application::
     Pressure value = 91526
     Pressure value = 91525
 
+buttons
+-------
+
+This configuration shows the use of the buttons subsystem. It can be used by executing
+the ``buttons`` application and pressing the ``BOOT`` button on the board::
+
+    nsh> buttons
+    buttons_main: Starting the button_daemon
+    buttons_main: button_daemon started
+    button_daemon: Running
+    button_daemon: Opening /dev/buttons
+    button_daemon: Supported BUTTONs 0x01
+    nsh> Sample = 1
+    Sample = 0
+
 capture
 --------
 

Documentation/platforms/risc-v/esp32c6/boards/esp32c6-devkitm/index.rst

@@ -99,6 +99,21 @@ You can check that the sensor is working by using the ``bmp180`` application::
     Pressure value = 91526
     Pressure value = 91525
 
+buttons
+-------
+
+This configuration shows the use of the buttons subsystem. It can be used by executing
+the ``buttons`` application and pressing the ``BOOT`` button on the board::
+
+    nsh> buttons
+    buttons_main: Starting the button_daemon
+    buttons_main: button_daemon started
+    button_daemon: Running
+    button_daemon: Opening /dev/buttons
+    button_daemon: Supported BUTTONs 0x01
+    nsh> Sample = 1
+    Sample = 0
+
 coremark
 --------
 

Documentation/platforms/risc-v/esp32c6/index.rst

@@ -486,114 +486,6 @@ Finally, the image is loaded but not confirmed.
 To make sure it won't rollback to the previous image, you must confirm with ``mcuboot_confirm`` and reboot the board.
 The OTA is now complete.
 
-Flash Allocation for MCUBoot
-----------------------------
-
-When MCUBoot is enabled on ESP32-C6, the flash memory is organized as follows
-based on the default KConfig values:
-
-**Flash Layout (MCUBoot Enabled)**
-
-.. list-table::
-   :header-rows: 1
-   :widths: 40 20 20
-   :align: left
-
-   * - Region
-     - Offset
-     - Size
-   * - Bootloader
-     - 0x000000
-     - 64KB
-   * - E-Fuse Virtual (see Note)
-     - 0x010000
-     - 64KB
-   * - Primary Application Slot (/dev/ota0)
-     - 0x020000
-     - 1MB
-   * - Secondary Application Slot (/dev/ota1)
-     - 0x120000
-     - 1MB
-   * - Scratch Partition (/dev/otascratch)
-     - 0x220000
-     - 256KB
-   * - Storage MTD (optional)
-     - 0x260000
-     - 1MB
-   * - Available Flash
-     - 0x360000+
-     - Remaining
-
-.. raw:: html
-
-   <div style="clear: both"></div>
-
-
-**Note**: The E-Fuse Virtual region is optional and only used when
-``ESPRESSIF_EFUSE_VIRTUAL_KEEP_IN_FLASH`` is enabled. However, this 64KB
-location is always allocated in the memory layout to prevent accidental
-erasure during board flashing operations, ensuring data preservation if
-virtual E-Fuses are later enabled.
-
-.. code-block:: text
-
-    Memory Map (Addresses in hex):
-
-    0x000000  ┌─────────────────────────────┐
-              │                             │
-              │      MCUBoot Bootloader     │
-              │           (64KB)            │
-              │                             │
-    0x010000  ├─────────────────────────────┤
-              │       E-Fuse Virtual        │
-              │           (64KB)            │
-    0x020000  ├─────────────────────────────┤
-              │                             │
-              │      Primary App Slot       │
-              │            (1MB)            │
-              │          /dev/ota0          │
-              │                             │
-    0x120000  ├─────────────────────────────┤
-              │                             │
-              │     Secondary App Slot      │
-              │            (1MB)            │
-              │          /dev/ota1          │
-              │                             │
-    0x220000  ├─────────────────────────────┤
-              │                             │
-              │      Scratch Partition      │
-              │           (256KB)           │
-              │       /dev/otascratch       │
-              │                             │
-    0x260000  ├─────────────────────────────┤
-              │                             │
-              │    Storage MTD (optional)   │
-              │            (1MB)            │
-              │                             │
-    0x360000  ├─────────────────────────────┤
-              │                             │
-              │       Available Flash       │
-              │         (Remaining)         │
-              │                             │
-              └─────────────────────────────┘
-
-The key KConfig options that control this layout:
-
-- ``ESPRESSIF_OTA_PRIMARY_SLOT_OFFSET`` (default: 0x20000)
-- ``ESPRESSIF_OTA_SECONDARY_SLOT_OFFSET`` (default: 0x120000)
-- ``ESPRESSIF_OTA_SLOT_SIZE`` (default: 0x100000)
-- ``ESPRESSIF_OTA_SCRATCH_OFFSET`` (default: 0x220000)
-- ``ESPRESSIF_OTA_SCRATCH_SIZE`` (default: 0x40000)
-- ``ESPRESSIF_STORAGE_MTD_OFFSET`` (default: 0x260000 when MCUBoot enabled)
-- ``ESPRESSIF_STORAGE_MTD_SIZE`` (default: 0x100000)
-
-For MCUBoot operation:
-
-- The **Primary Slot** contains the currently running application
-- The **Secondary Slot** receives OTA updates
-- The **Scratch Partition** is used by MCUBoot for image swapping during updates
-- MCUBoot manages image validation, confirmation, and rollback functionality
-
 _`Managing esptool on virtual environment`
 ==========================================
 

Documentation/platforms/risc-v/esp32h2/boards/esp32h2-devkit/index.rst

@@ -119,6 +119,21 @@ You can check that the sensor is working by using the ``bmp180`` application::
     Pressure value = 91526
     Pressure value = 91525
 
+buttons
+-------
+
+This configuration shows the use of the buttons subsystem. It can be used by executing
+the ``buttons`` application and pressing the ``BOOT`` button on the board::
+
+    nsh> buttons
+    buttons_main: Starting the button_daemon
+    buttons_main: button_daemon started
+    button_daemon: Running
+    button_daemon: Opening /dev/buttons
+    button_daemon: Supported BUTTONs 0x01
+    nsh> Sample = 1
+    Sample = 0
+
 coremark
 --------
 

Documentation/reference/os/events.rst

@@ -116,37 +116,6 @@ Notifier Chain Interfaces
   :param events: Set of events to wait, 0 will indicate wait from any events
   :param eflags: Events flags
 
-.. c:function:: nxevent_mask_t nxevent_clear(FAR nxevent_t *event, nxevent_mask_t mask)
-
-  This function is used to clear specific bits from the event mask of the given event object.
-
-  :param event: Address of the event object
-  :param mask: Bit mask specifying which event flags should be cleared
-
-.. c:function:: nxevent_mask_t nxevent_tickwait_wait(FAR nxevent_t *event, FAR nxevent_wait_t *wait, nxevent_mask_t events, nxevent_flags_t eflags, uint32_t delay);
-
-  Wait for all of the specified events for the specified tick time.
-
-  This routine is functionally identical to nxevent_tickwait, except that the wait object is explicitly provided by the user.
-  In nxevent_tickwait, the wait object is allocated as a temporary variable on the event-wait thread's stack, and the user has no visibility or control over it.
-  Because this object is accessed by both the event-wait thread and the event-post thread, such an arrangement may lead to safety concerns.
-  To address this, the new function allows the user to supply the wait object directly, providing greater control and improving safety.
-
-  :param event: Address of the event object
-  :param wait:  Address of the event wait object
-  :param events: Set of events to wait, 0 will indicate wait from any events
-  :param eflags: Events flags
-  :param delay: Ticks to wait from the start time until the event is posted,
-                If ticks is zero, then this function is equivalent to nxevent_trywait().
-
-.. c:function:: nxevent_mask_t nxevent_getmask(FAR nxevent_t *event)
-
-  This function returns the event mask value of the current event object.
-
-  :param event: Location to return the event group reference.
-
-  :return: The event mask value of the current event object.
-
 .. c:function:: int nxevent_open(FAR nxevent_t **event, FAR const char *name, int oflags, ...)
 
   This function establishes a connection between named event groups and a

Documentation/reference/user/05_counting_semaphore.rst

@@ -108,11 +108,6 @@ result.
 Semaphore does not support priority inheritance by default. If you need to
 use a semaphore as a mutex you need to change its default behavior.
 
-Each semaphore is assigned a default maximum value defined by SEM_VALUE_MAX.
-If ``CONFIG_CUSTOM_SEMAPHORE_MAXVALUE`` is enabled, applications may override this limit.
-In such cases, the function ``nxsem_setmaxvalue()`` can be used to specify a custom maximum value
-for an individual semaphore.
-
 In user space, it is recommended to use pthread_mutex instead of
 semaphore for resource protection
 

Kconfig.license

@@ -0,0 +1,72 @@
+
+
+config ALLOW_BSD_COMPONENTS
+	bool "Use components that have BSD licenses"
+	default n
+	---help---
+		When this option is enabled the project will allow the use
+		of components that have BSD licenses.
+
+		NOTE: Please check that the license for each enabled
+		component matches your project license.
+
+		NOTE: If this option is not set the following components
+		are not included in the setup menu:
+		Crypto
+		    AES cypher support
+		FS
+		    NFS client file system
+		    SPIFFS File System
+		Wireless
+		    Bluetooth LE support
+
+config ALLOW_GPL_COMPONENTS
+	bool "Use components that have GPL/LGPL licenses"
+	default n
+	---help---
+		When this option is enabled the project will allow the use
+		of components that have GPL/LGPL licenses.
+
+		NOTE: Please check that the license for each enabled
+		component matches your project license.
+
+config ALLOW_MIT_COMPONENTS
+	bool "Use components that have MIT licenses"
+	default n
+	---help---
+		When this option is enabled the project will allow the use
+		of components that have MIT licenses.
+
+		NOTE: Please check that the license for each enabled
+		component matches your project license.
+
+config ALLOW_BSDNORDIC_COMPONENTS
+	bool "Use components that have 5-Clause Nordic licenses"
+	depends on ARCH_CHIP_NRF52 || ARCH_CHIP_NRF53 || ARCH_CHIP_NRF91
+	default n
+	---help---
+		When this option is enabled the project will allow the use
+		of components that have 5-Clause Nordic licenses.
+
+		NOTE: Please check that the license for each enabled
+		component matches your project license.
+
+config ALLOW_ECLIPSE_COMPONENTS
+	bool "Use components that have Eclipse Public Licenses"
+	default n
+	---help---
+		When this option is enabled the project will allow the use
+		of components that have EPL licenses.
+
+		NOTE: Please check that the license for each enabled
+		component matches your project license.
+
+config ALLOW_ICS_COMPONENTS
+	bool "Use components that have ICS license"
+	default n
+	---help---
+		When this option is enabled the project will allow the use
+		of components that have ICS licenses.
+
+		NOTE: Please check that the license for each enabled
+		component matches your project license.

Kconfig.setup

@@ -0,0 +1,506 @@
+menu "Build Setup"
+
+config EXPERIMENTAL
+	bool "Show experimental options"
+	---help---
+		Some features and drivers are considered "experimental" or
+		development/work-in-progress status. By default, these options are
+		hidden in the Kconfig menus. Enabling "Show experimental options"
+		makes these options visible and makes it possible to enable them.
+
+config DEFAULT_SMALL
+	bool "Default to smallest size"
+	default n
+	---help---
+		When options are present, the default value for certain options will
+		be the one the results in the smallest size (at a loss of features).
+		The default is a fuller feature set at a larger size.
+
+		NOTE: This option does not prevent you from overriding the default
+		to select another alternative.  Nor does it affect the settings that
+		have already been selected in your configuration file.  This applies
+		only to new settings that require a default value.
+
+choice
+	prompt "Build Host Platform"
+	default HOST_LINUX
+
+config HOST_LINUX
+	bool "Linux"
+
+config HOST_MACOS
+	bool "macOS"
+
+endchoice # Build Host Platform
+
+choice
+	prompt "Windows Build Environment"
+	default WINDOWS_MSYS
+	depends on HOST_WINDOWS
+
+config WINDOWS_MSYS
+	bool "MSYS or MSYS2"
+	select TOOLCHAIN_WINDOWS
+	---help---
+		Build natively in a Cygwin environment with POSIX style paths (like
+		/cygdrive/c/cygwin/home)
+
+endchoice # Windows Build Environment
+
+menu "Build Configuration"
+
+config BASE_DEFCONFIG
+	string "Base Configuration"
+	default ""
+	---help---
+		This will be automatically be updated by the configuration
+		script. This is the base configuration file that was used to create the
+		current configuration. It is useful for getting the current configuration
+		on runtime.
+
+config MODULES
+	bool
+	option modules
+	---help---
+		Automatically selected if KERNEL build is selected.
+		This selection marks the implementation of Kconfig
+		to enable the module build function, and is used to
+		enable 'm' in the triate state. Its semantics are
+		consistent with Kernel. This selection also effects
+		the behavior of the 'make export' target and currently
+		has no effect unless you wish to build loadable applications
+		in a FLAT build.
+
+choice
+	prompt "Memory organization"
+	default BUILD_FLAT
+
+config BUILD_FLAT
+	bool "Flat address space"
+	---help---
+		Build NuttX as one large, executable "blob".  All of the code
+		within the blob can interrupt with all of the other code within
+		the blob.  There are no special privileges, protections, or
+		restraints.
+
+config BUILD_PROTECTED
+	bool "NuttX protected build"
+	depends on ARCH_USE_MPU
+	select LIB_SYSCALL
+	select BUILD_2PASS
+	---help---
+		Builds NuttX and selected applications as two "blobs":  A protected,
+		privileged kernel blob and a separate unprivileged, user blob.  This
+		requires use of the two pass build with each blob being build on
+		each pass.
+
+		NOTE:  This build configuration requires that the platform support
+		a memory protection unit (MPU).  Support, however, may not be
+		implemented on all platforms.
+
+config BUILD_KERNEL
+	bool "NuttX kernel build"
+	depends on ARCH_USE_MMU && ARCH_ADDRENV
+	select LIB_SYSCALL
+	select MODULES
+	---help---
+		Builds NuttX as a separately compiled kernel.  No applications are
+		built.  All user applications must reside in a file system where
+		they can be loaded into memory for execution.
+
+		NOTE:  This build configuration requires that the platform support
+		a memory management unit (MMU) and address environments.  Support,
+		however, may not be implemented on all platforms.
+
+endchoice # Build configuration
+
+config BUILD_PIC
+	bool "NuttX PIC build"
+	default n
+	---help---
+		Builds NuttX with position-independent code (PIC).  This will allow
+		load NuttX into memory at any address and run it.
+
+endmenu # Build Setup
+
+menu "Customize Header Files"
+
+config ARCH_HAVE_STDINT_H
+	bool
+	default n
+	---help---
+		Selected by architecture specific logic if the architecture provides
+		a stdint.h header file.
+
+config ARCH_STDINT_H
+	bool "stdint.h"
+	default n
+	depends on ARCH_HAVE_STDINT_H
+	---help---
+		The stdint.h header file can be found at nuttx/include/stdint.h.
+		However, that header includes logic to redirect the inclusion of an
+		architecture specific header file like:
+
+			#ifdef CONFIG_ARCH_STDINT_H
+			#  include <arch/stdint.h>
+			#else
+			...
+			#endif
+
+		Recall that that include path, include/arch, is a symbolic link and
+		will refer to a version of stdint.h at nuttx/arch/<architecture>/include/stdint.h.
+
+config ARCH_HAVE_STDBOOL_H
+	bool
+	default n
+	---help---
+		Selected by architecture specific logic if the architecture provides
+		a stdbool.h header file.
+
+config ARCH_STDBOOL_H
+	bool "stdbool.h"
+	default n
+	depends on ARCH_HAVE_STDBOOL_H
+	---help---
+		The stdbool.h header file can be found at nuttx/include/stdbool.h.
+		However, that header includes logic to redirect the inclusion of an
+		architecture specific header file like:
+
+			#ifdef CONFIG_ARCH_STDBOOL_H
+			#  include <arch/stdbool.h>
+			#else
+			...
+			#endif
+
+		Recall that that include path, include/arch, is a symbolic link and
+		will refer to a version of stdbool.h at nuttx/arch/<architecture>/include/stdbool.h.
+
+config ARCH_HAVE_MATH_H
+	bool
+	default n
+	---help---
+		Selected by architecture specific logic if the architecture provides
+		a math.h header file.
+
+config ARCH_MATH_H
+	bool "math.h"
+	depends on ARCH_HAVE_MATH_H
+	default n
+	---help---
+		There is also a re-directing version of math.h in the source tree.
+		However, it resides out-of-the-way at include/nuttx/lib/math.h because it
+		conflicts too often with the system math.h. If ARCH_MATH_H=y is
+		defined, however, the top-level makefile will copy the redirecting
+		math.h header file from include/nuttx/lib/math.h to include/math.h. math.h
+		will then include the architecture-specific version of math.h that you
+		must provide at nuttx/arch/>architecture</include/math.h.
+
+			#ifdef CONFIG_ARCH_MATH_H
+			#  include <arch/math.h>
+			#endif
+
+		So for the architectures that define ARCH_MATH_H=y, include/math.h
+		will be the redirecting math.h header file; for the architectures
+		that don't select ARCH_MATH_H, the redirecting math.h header file
+		will stay out-of-the-way in include/nuttx/.
+
+config ARCH_FLOAT_H
+	bool "float.h"
+	default n
+	---help---
+		The float.h header file defines the properties of your floating
+		point implementation.  It would always be best to use your
+		toolchain's float.h header file but if none is available, a default
+		float.h header file will provided if this option is selected.  However
+		there is no assurance that the settings in this float.h are actually
+		correct for your platform!
+
+config DISABLE_FLOAT
+	bool "Disable floating point"
+	default n
+	---help---
+		Disable floating point support in the compiler. This will reduce
+		code size and increase performance. This option is only available
+		on some architectures.
+
+config ARCH_HAVE_STDARG_H
+	bool
+	default n
+	---help---
+		Selected by architecture specific logic if the architecture provides
+		a math.h header file.
+
+config ARCH_STDARG_H
+	bool "stdarg.h"
+	depends on ARCH_HAVE_STDARG_H
+	default n
+	---help---
+		There is a redirecting version of stdarg.h in the source tree. It
+		resides out-of-the-way at include/nuttx/lib/stdarg.h.  This is
+		because you should normally use your toolchain's stdarg.h file. But
+		sometimes, your toolchain's stdarg.h file may have other header
+		file dependencies and so may not be usable in the NuttX build
+		environment. In those cases, you may have to create a architecture-
+		specific stdarg.h header file at nuttx/arch/<architecture>/include/stdarg.h
+
+		If ARCH_STDARG_H=y is defined, the top-level makefile will copy the
+		re-directing stdarg.h header file from include/nuttx/lib/stdarg.h to
+		include/stdarg.h. So for the architectures that cannot use their
+		toolchain's stdarg.h file, they can use this alternative by defining
+		ARCH_STDARG_H=y and providing. If ARCH_STDARG_H, is not defined, then
+		the stdarg.h header file will stay out-of-the-way in include/nuttx/.
+
+config ARCH_HAVE_SETJMP
+	bool
+	default n
+
+config ARCH_SETJMP_H
+	bool "setjmp.h"
+	default n
+	depends on ARCH_HAVE_SETJMP
+	---help---
+		There is a redirecting version of setjmp.h in the source tree. It
+		resides out-of-the-way at include/nuttx/lib/setjmp.h.  This is
+		because you should normally use your toolchain's setjmp.h file. But
+		sometimes, your toolchain's setjmp.h file may have other header
+		file dependencies and so may not be usable in the NuttX build
+		environment. In those cases, you may have to create a architecture-
+		specific setjmp.h header file at nuttx/arch/<architecture>/include/setjmp.h
+
+		If ARCH_SETJMP_H=y is defined, the top-level makefile will copy the
+		re-directing setjmp.h header file from include/nuttx/lib/setjmp.h to
+		include/setjmp.h. So for the architectures that cannot use their
+		toolchain's setjmp.h file, they can use this alternative by defining
+		ARCH_SETJMP_H=y and providing. If ARCH_SETJMP_H, is not defined, then
+		the setjmp.h header file will stay out-of-the-way in include/nuttx/.
+
+choice
+	prompt "debug.h selection"
+	default ARCH_NONE_DEBUG_H
+
+config ARCH_NONE_DEBUG_H
+	bool "None"
+	---help---
+		No debug.h under include/arch/ and include/arch/chip.
+
+config ARCH_DEBUG_H
+	bool "debug.h"
+	---help---
+		The debug.h under include/arch contains architecture dependent debugging primitives
+
+config ARCH_CHIP_DEBUG_H
+	bool "chip debug.h"
+	---help---
+		The debug.h under include/arch/chip contains architecture dependent debugging primitives
+
+config ARCH_BOARD_DEBUG_H
+	bool "board debug.h"
+	---help---
+		The debug.h under include/arch/board contains board dependent debugging primitives
+
+endchoice # debug.h selection
+
+endmenu # Customize Header Files
+
+source "Kconfig.debug"
+
+menuconfig TRACE
+	bool "Enable tracepoints"
+	default n
+	depends on SCHED_INSTRUMENTATION_DUMP
+	---help---
+		If this option is enabled, tracepoints at critical code in
+		the kernel will be enabled.
+
+if TRACE
+config TRACE_APP
+	bool "Enable tracepoints in app"
+	default n
+
+config TRACE_ARCH
+	bool "Enable tracepoints in arch"
+	default n
+
+config TRACE_AUDIO
+	bool "Enable tracepoints in audio"
+	default n
+
+config TRACE_BOARDS
+	bool "Enable tracepoints in boards"
+	default n
+
+config TRACE_CRYPTO
+	bool "Enable tracepoints in crypto"
+	default n
+
+config TRACE_DRIVERS
+	bool "Enable tracepoints in drivers"
+	default n
+
+config TRACE_FS
+	bool "Enable tracepoints in fs"
+	default n
+
+if TRACE_FS
+menu "Trace Fs Support"
+
+config TRACE_LITTLEFS_FS
+	bool "Enable tracepoints in littlefs"
+	default n
+
+config TRACE_ROMFS_FS
+	bool "Enable tracepoints in romfs"
+	default n
+
+config TRACE_RPMSGFS_FS
+	bool "Enable tracepoints in rpmsgfs"
+	default n
+
+endmenu # Trace Fs Support
+endif
+
+config TRACE_GRAPHICS
+	bool "Enable tracepoints in graphics"
+	default n
+
+config TRACE_INPUT
+	bool "Enable tracepoints in input"
+	default n
+
+config TRACE_LIBS
+	bool "Enable tracepoints in libs"
+	default n
+
+config TRACE_MM
+	bool "Enable tracepoints in mm"
+	default n
+
+config TRACE_NET
+	bool "Enable tracepoints in net"
+	default n
+
+config TRACE_SCHED
+	bool "Enable tracepoints in sched"
+	default n
+
+config TRACE_VIDEO
+	bool "Enable tracepoints in video"
+	default n
+
+config TRACE_WIRELESS
+	bool "Enable tracepoints in wireless"
+	default n
+
+endif #TRACE
+
+choice
+	prompt "Optimization Level"
+	default DEBUG_NOOPT if DEBUG_SYMBOLS
+	default DEBUG_FULLOPT if !DEBUG_SYMBOLS
+
+config DEBUG_NOOPT
+	bool "Suppress Optimization"
+	---help---
+		Build without optimization.  This is often helpful when debugging code.
+
+config DEBUG_CUSTOMOPT
+	bool "Custom Optimization"
+	depends on ARCH_HAVE_CUSTOMOPT
+	---help---
+		Select a custom debug level.  This is often helpful if you suspect an
+		optimization level error and want to lower the level of optimization.
+
+config DEBUG_FULLOPT
+	bool "Normal, Full optimization"
+	---help---
+		Build full optimization.  This is the normal case for production
+		firmware.
+
+endchoice # Optimization Level
+
+config DEBUG_OPTLEVEL
+	string "Custom Optimization Level"
+	default "/O2" if HOST_WINDOWS
+	default "-O2"
+	depends on DEBUG_CUSTOMOPT
+	---help---
+		This string represents the custom optimization level that will be
+		used if DEBUG_CUSTOMOPT.
+
+choice
+	prompt "Link Time Optimization (LTO)"
+	default LTO_NONE
+	---help---
+		This option enables Link Time Optimization (LTO), which allows the
+		compiler to optimize binaries globally.
+
+		If unsure, select LTO_NONE. Note that LTO is very resource-intensive
+		so it's disabled by default.
+
+config LTO_NONE
+	bool "None"
+	---help---
+		Build the kernel normally, without Link Time Optimization (LTO).
+
+config LTO_FULL
+	bool "GNU Full LTO (EXPERIMENTAL)"
+	depends on ARCH_TOOLCHAIN_GNU
+	---help---
+		Link time optimization is implemented as a GCC front end for a bytecode
+		bytecode representation of GIMPLE that is emitted in special sections
+		of .o files. Currently, LTO support is enabled in most ELF-based systems,
+		as well as darwin, cygwin and mingw systems.
+
+config LTO_THIN
+	bool "Clang ThinLTO (EXPERIMENTAL)"
+	depends on ARCH_TOOLCHAIN_CLANG
+	---help---
+		This option enables Clang's ThinLTO, which allows for parallel
+		optimization and faster incremental compiles compared to the
+		CONFIG_LTO_FULL option. More information can be found
+		from Clang's documentation:
+
+		https://clang.llvm.org/docs/ThinLTO.html
+
+		If unsure, say Y.
+endchoice
+
+config DEBUG_OPT_UNUSED_SECTIONS
+	bool "Optimization to eliminate the unused input sections"
+	default y
+	depends on ARCH_TOOLCHAIN_GNU
+	---help---
+		Use these options on systems where the linker can perform optimizations
+		to improve locality of reference in the instruction space.  Most systems
+		using the ELF object format have linkers with such optimizations.
+
+		Enable this option to optimization the unused input sections with the
+		linker by compiling with " -ffunction-sections -fdata-sections ", and
+		linking with " --gc-sections ".
+
+config DEBUG_LINK_WHOLE_ARCHIVE
+	bool "Force every object to be included in the resulting shared library."
+	default n
+	depends on DEBUG_OPT_UNUSED_SECTIONS
+	---help---
+		Selecting this option will pass "--whole-archive" to ld
+		when linking NuttX ELF.
+
+config DEBUG_LINK_MAP
+	bool "Generate link map file"
+	default y
+	---help---
+		Selecting this option will pass "-Map=$(TOPDIR)$(DELIM)nuttx.map" to ld
+		when linking NuttX ELF. That file can be useful for verifying
+		and debugging magic section games, and for seeing which
+		pieces of code get eliminated with DEBUG_OPT_UNUSED_SECTIONS.
+
+config CCACHE
+	bool "Use ccache"
+	default n
+	---help---
+		If enabled, ccache will be used during the build.
+		Build artifacts will be cached to a local storage, considerably
+		reducing build times.
+
+endmenu # Build Setup

Makefile

@@ -20,23 +20,90 @@
 #
 ############################################################################
 
-# Check if the system has been configured
+# Handle the verbosity level first thing in the build process
 
-ifeq ($(wildcard .config),)
+# Control build verbosity
-.DEFAULT default:
+#
-	@echo "NuttX has not been configured!"
+#  V=0:   Exit silent mode
-	@echo "To configure the project:"
+#  V=1,2: Enable echo of commands
-	@echo "  tools/configure.sh <config>"
+#  V=2:   Enable bug/verbose options in tools and scripts
-	@echo "For a list of available configurations:"
-	@echo "  tools/configure.sh -L"
-else
-include .config
 
-# Include the correct Makefile for the selected architecture.
+ifeq ($(V),)
-
+  MAKE := $(MAKE) -s --no-print-directory
-ifeq ($(CONFIG_WINDOWS_NATIVE),y)
-include tools/Win.mk
-else
-include tools/Unix.mk
 endif
+
+ifeq ($(V),1)
+  export Q :=
+else ifeq ($(V),2)
+  export Q :=
+else
+  export Q := @
 endif
+
+# New Environment variable NXSPACE is checked first. If set, it will point
+# to NuttX workspace root.
+
+NXSPACE ?= $(realpath $(CURDIR)/..)
+export NXSPACE
+
+
+NXBASE := $(realpath $(NXSPACE)/nuttx)
+
+# New BDIR variable defines the board directory.
+# There are two ways to run NuttX build system:
+# 1) From the board directory (preferred)
+# 2) From the NuttX top directory
+# In the latter case, BDIR can be ommited as the
+# build entry-point will always be the NuttX top directory.
+
+BDIR ?= ${NXBASE}
+
+# New OUT variable will be used as the output directory.
+# All the defined target should refer to this variable for their output.
+# Preferably, this out variable should be externally provided, for 
+# portability reasons. Rather than keep the output local to the NuttX
+# source tree, this mechanism allows to specify any out-of-tree dir.
+
+# $(NXSPACE)/build is the default output directory, and it's reserved by the 
+# NuttX build system.
+
+OUT ?= $(realpath $(NXSPACE)/build)
+export OUT
+
+# Force the BCFG to always be passed to build process.
+# This new Environment variable defines the board:config to be used.
+
+ifndef BCFG
+  $(info ERROR: Board configuration is not set)
+  $(info )
+  $(info Usage:)
+  $(info   make BCFG=<config>)
+  $(info )
+  $(info Examples:)
+  $(info   make BCFG=nsh)
+
+  $(error Build stopped, BCFG required.)
+endif
+
+# External code support
+# EXTLIB variable to can be passed to the build system.
+# EXTLIB should be the end library that is passed to the nuttx build system
+
+ifdef EXTLIB
+  TARGETS += ${EXTLIB}
+endif
+
+# Support for ROMFS image creation
+
+ifeq (${CONFIG_FS_ROMFS},y)
+
+  ifdef ROMFSIMG
+    TARGETS += ${ROMFSIMG}
+  else
+    $(error ROMFSIMG is not defined by the board Makefile)
+  endif
+
+endif
+
+menuconfig:
+	menuconfig

VERSION

@@ -0,0 +1,4 @@
+VERSION_MAJOR = 12
+VERSION_MINOR = 10
+PATCH = 0
+EXTRAVERSION =

arch/CMakeLists.txt

@@ -1,41 +0,0 @@
-# ##############################################################################
-# arch/CMakeLists.txt
-#
-# SPDX-License-Identifier: Apache-2.0
-#
-# Licensed to the Apache Software Foundation (ASF) under one or more contributor
-# license agreements.  See the NOTICE file distributed with this work for
-# additional information regarding copyright ownership.  The ASF licenses this
-# file to you under the Apache License, Version 2.0 (the "License"); you may not
-# use this file except in compliance with the License.  You may obtain a copy of
-# the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
-# License for the specific language governing permissions and limitations under
-# the License.
-#
-# ##############################################################################
-# Declare arch library. In contrast to other user/kernel pairs built in KERNEL
-# mode, on arch/ the "user" portion uses a different set of sources than the
-# kernel portion. To keep things simple the naming k<lib> is not used. Instead,
-# the "user" portion is named "arch_interface".
-
-nuttx_add_kernel_library(arch)
-target_include_directories(arch PRIVATE ${CMAKE_SOURCE_DIR}/sched)
-
-if(CONFIG_BUILD_PROTECTED)
-  nuttx_add_system_library(arch_interface)
-  file(TOUCH "${CMAKE_CURRENT_BINARY_DIR}/empty.c")
-  target_sources(arch_interface PRIVATE "${CMAKE_CURRENT_BINARY_DIR}/empty.c")
-  target_include_directories(arch_interface PRIVATE ${CMAKE_SOURCE_DIR}/sched)
-endif()
-
-# TODO: move this higher up ifeq ($(CONFIG_SCHED_INSTRUMENTATION_SYSCALL),y)
-# EXTRALINKCMDS += @$(TOPDIR)/syscall/syscall_wraps.ldcmd endif
-
-# include corresponding arch subdirectory
-add_subdirectory(${CONFIG_ARCH})

arch/Kconfig

@@ -165,19 +165,7 @@ config ARCH_XTENSA
 	select ARCH_HAVE_SYSCALL_HOOKS
 	select ARCH_HAVE_PERF_EVENTS
 	---help---
-		Cadence® Tensilica® Xtensa® actictures.
+		Cadence® Tensilica® Xtensa® architectures.
-
-config ARCH_Z16
-	bool "ZNEO"
-	select ARCH_HAVE_HEAP2
-	---help---
-		ZiLOG ZNEO 16-bit architectures (z16f).
-
-config ARCH_Z80
-	bool "z80"
-	select ARCH_HAVE_HEAP2
-	---help---
-		ZiLOG 8-bit architectures (z80, ez80, z8).
 
 config ARCH_OR1K
 	bool "OpenRISC"
@@ -217,8 +205,6 @@ config ARCH
 	default "x86"     if ARCH_X86
 	default "x86_64"  if ARCH_X86_64
 	default "xtensa"  if ARCH_XTENSA
-	default "z16"     if ARCH_Z16
-	default "z80"     if ARCH_Z80
 	default "or1k"    if ARCH_OR1K
 	default "sparc"   if ARCH_SPARC
 	default "tricore" if ARCH_TRICORE
@@ -235,50 +221,17 @@ source "arch/sim/Kconfig"
 source "arch/x86/Kconfig"
 source "arch/x86_64/Kconfig"
 source "arch/xtensa/Kconfig"
+<<<<<<< HEAD
 source "arch/z16/Kconfig"
 source "arch/z80/Kconfig"
+=======
+endif
+if ARCH_OR1K
+>>>>>>> 753c7b2dd6 (walnux: moveout)
 source "arch/or1k/Kconfig"
 source "arch/sparc/Kconfig"
 source "arch/tricore/Kconfig"
 
-config ARCH_CHIP_CUSTOM
-	bool "Custom Chip Support"
-	default n
-
-if ARCH_CHIP_CUSTOM
-menu "Custom Chip Configuration"
-
-config ARCH_CHIP_CUSTOM_NAME
-	string "Custom chip name"
-	default ""
-	---help---
-		This is a name for the chip.  It is not used except to return the
-		information via the NSH uname command.
-
-config ARCH_CHIP_CUSTOM_DIR
-	string "Custom chip directory"
-	default ""
-	---help---
-		If the custom chip configuration is selected, then it is necessary
-		to also tell the build system where it can find the chip directory
-		for the custom chip.
-
-		In this case, the chip directory is assumed to lie outside the
-		NuttX directory.  The provided path must then be a full, absolute
-		path to some location outside of the NuttX source tree (like
-		"~/projects/mychip").
-
-config ARCH_CHIP_CUSTOM_DIR_RELPATH
-	bool "Relative custom chip directory"
-	default y
-	---help---
-		Specifies that the chip directory is relative to the NuttX directory.
-
-endmenu # Custom Chip Configuration
-endif #ARCH_CHIP_CUSTOM
-
-source "$BINDIR/arch/dummy/Kconfig"
-
 config ARCH_TOOLCHAIN_GNU
 	bool
 	default n
@@ -309,7 +262,7 @@ config ARCH_TOOLCHAIN_IAR
 
 config ARCH_TOOLCHAIN_TASKING
 	bool
-	default n
+	default n  
 
 config ARCH_GNU_NO_WEAKFUNCTIONS
 	bool

arch/arm/CMakeLists.txt

@@ -1,23 +0,0 @@
-# ##############################################################################
-# arch/arm/CMakeLists.txt
-#
-# SPDX-License-Identifier: Apache-2.0
-#
-# Licensed to the Apache Software Foundation (ASF) under one or more contributor
-# license agreements.  See the NOTICE file distributed with this work for
-# additional information regarding copyright ownership.  The ASF licenses this
-# file to you under the Apache License, Version 2.0 (the "License"); you may not
-# use this file except in compliance with the License.  You may obtain a copy of
-# the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
-# License for the specific language governing permissions and limitations under
-# the License.
-#
-# ##############################################################################
-
-nuttx_add_subdirectory()

arch/arm/Kconfig.arch

@@ -0,0 +1,345 @@
+
+config ARCH_ARM7TDMI
+	bool
+	default n
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	---help---
+		The Arm7TDMI-S is an excellent workhorse processor capable of a wide
+		array of applications. Traditionally used in mobile handsets, the
+		processor is now broadly in many non-mobile applications.
+
+config ARCH_ARM920T
+	bool
+	default n
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MMU
+	select ARCH_USE_MMU
+	---help---
+		The ARM9 processor family is built around the ARM9TDMI processor and
+		incorporates the 16-bit Thumb instruction set. The ARM9 Thumb family
+		includes the ARM920T and ARM922T cached processor macrocells:
+
+		- Dual 16k caches for applications running Symbian OS, Palm OS,
+		  Linux and Windows CE,
+		- Dual 8k caches for applications running Symbian OS, Palm OS, Linux
+		  and Windows CE Applications
+
+config ARCH_ARM926EJS
+	bool
+	default n
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MMU
+	select ARCH_USE_MMU
+	---help---
+		Arm926EJ-S is the entry point processor capable of supporting full
+		Operating Systems including Linux, WindowsCE, and Symbian.
+
+		The ARM9E processor family enables single processor solutions for
+		microcontroller, DSP and Java applications. The ARM9E family of
+		products are DSP-enhanced 32-bit RISC processors, for applications
+		requiring a mix of DSP and microcontroller performance. The family
+		includes the ARM926EJ-S, ARM946E-S, ARM966E-S, and ARM968E-S
+		processor macrocells. They include signal processing extensions to
+		enhance 16-bit fixed point performance using a single-cycle 32 x 16
+		multiply-accumulate (MAC) unit, and implement the 16-bit Thumb
+		instruction set. The ARM926EJ-S processor also includes ARM Jazelle
+		technology which enables the direct execution of Java bytecodes in
+		hardware.
+
+config ARCH_ARM1136J
+	bool
+	default n
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MMU
+	select ARCH_USE_MMU
+	---help---
+		Arm1136J(F)-S is very similar to Arm926EJ-S, but includes an
+		extended pipeline, basic SIMD (Single Instruction Multiple Data)
+		instructions, and improved frequency and performance.
+
+config ARCH_ARM1156T2
+	bool
+	default n
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MMU
+	select ARCH_USE_MMU
+	---help---
+		Arm1156T2(F)-S is the highest-performance processor in the real-time
+		Classic Arm family.
+
+config ARCH_ARM1176JZ
+	bool
+	default n
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MMU
+	select ARCH_USE_MMU
+	---help---
+		Arm1176JZ(F)-S is the highest-performance single-core processor in
+		the Classic Arm family. It also introduced TrustZone technology to
+		enable secure execution outside of the reach of malicious code.
+
+config ARCH_ARMV6M
+	bool
+	default n
+	select ARCH_HAVE_CPUINFO
+
+config ARCH_CORTEXM0
+	bool
+	default n
+	select ARM_THUMB
+	select ARCH_ARMV6M
+	select ARCH_HAVE_IRQPRIO
+	select ARCH_HAVE_IRQTRIGGER
+	select ARCH_HAVE_RAMVECTORS
+	select ARCH_HAVE_RESET
+	select ARCH_HAVE_HARDFAULT_DEBUG
+
+config ARCH_ARMV7M
+	bool
+	default n
+	select ARCH_HAVE_CPUINFO
+	select ARCH_HAVE_DEBUG
+	select ARCH_HAVE_PERF_EVENTS
+
+config ARCH_CORTEXM3
+	bool
+	default n
+	select ARM_THUMB
+	select ARCH_ARMV7M
+	select ARCH_HAVE_IRQPRIO
+	select ARCH_HAVE_IRQTRIGGER
+	select ARCH_HAVE_RAMVECTORS
+	select ARCH_HAVE_HIPRI_INTERRUPT
+	select ARCH_HAVE_RESET
+	select ARCH_HAVE_TESTSET
+	select ARCH_HAVE_HARDFAULT_DEBUG
+	select ARCH_HAVE_MEMFAULT_DEBUG
+	select ARCH_HAVE_BUSFAULT_DEBUG
+	select ARCH_HAVE_USAGEFAULT_DEBUG
+
+config ARCH_CORTEXM4
+	bool
+	default n
+	select ARM_THUMB
+	select ARCH_ARMV7M
+	select ARCH_HAVE_IRQPRIO
+	select ARCH_HAVE_IRQTRIGGER
+	select ARCH_HAVE_RAMVECTORS
+	select ARCH_HAVE_HIPRI_INTERRUPT
+	select ARCH_HAVE_RESET
+	select ARCH_HAVE_TESTSET
+	select ARCH_HAVE_HARDFAULT_DEBUG
+	select ARCH_HAVE_MEMFAULT_DEBUG
+	select ARCH_HAVE_BUSFAULT_DEBUG
+	select ARCH_HAVE_USAGEFAULT_DEBUG
+
+config ARCH_CORTEXM7
+	bool
+	default n
+	select ARM_THUMB
+	select ARCH_ARMV7M
+	select ARCH_HAVE_FPU
+	select ARCH_HAVE_IRQPRIO
+	select ARCH_HAVE_IRQTRIGGER
+	select ARCH_HAVE_RAMVECTORS
+	select ARCH_HAVE_HIPRI_INTERRUPT
+	select ARCH_HAVE_RESET
+	select ARCH_HAVE_TESTSET
+	select ARCH_HAVE_HARDFAULT_DEBUG
+	select ARCH_HAVE_MEMFAULT_DEBUG
+	select ARCH_HAVE_BUSFAULT_DEBUG
+	select ARCH_HAVE_USAGEFAULT_DEBUG
+
+config ARCH_ARMV7A
+	bool
+	default n
+	select ARCH_HAVE_CPUINFO
+	select ARCH_HAVE_DEBUG
+	select ARCH_HAVE_PERF_EVENTS
+	select ARM_HAVE_WFE_SEV
+
+config ARCH_CORTEXA5
+	bool
+	default n
+	select ARCH_ARMV7A
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MMU
+	select ARCH_USE_MMU
+	select ARCH_HAVE_TESTSET
+	select ARM_HAVE_MPCORE
+
+config ARCH_CORTEXA7
+	bool
+	default n
+	select ARCH_ARMV7A
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MMU
+	select ARCH_USE_MMU
+	select ARCH_HAVE_TESTSET
+	select ARCH_HAVE_FPU
+	select ARM_HAVE_MPCORE
+
+config ARCH_CORTEXA8
+	bool
+	default n
+	select ARCH_ARMV7A
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MMU
+	select ARCH_USE_MMU
+	select ARCH_HAVE_TESTSET
+
+config ARCH_CORTEXA9
+	bool
+	default n
+	select ARCH_ARMV7A
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MMU
+	select ARCH_USE_MMU
+	select ARCH_HAVE_TESTSET
+	select ARM_HAVE_MPCORE
+
+config ARCH_ARMV7R
+	bool
+	default n
+	select ARCH_HAVE_CPUINFO
+	select ARCH_HAVE_PERF_EVENTS
+
+config ARCH_CORTEXR4
+	bool
+	default n
+	select ARCH_ARMV7R
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MPU
+	select ARCH_HAVE_TESTSET
+
+config ARCH_CORTEXR5
+	bool
+	default n
+	select ARCH_ARMV7R
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MPU
+	select ARCH_HAVE_TESTSET
+
+config ARCH_CORTEXR7
+	bool
+	default n
+	select ARCH_ARMV7R
+	select ARCH_DCACHE
+	select ARCH_ICACHE
+	select ARCH_HAVE_MPU
+	select ARCH_HAVE_TESTSET
+
+config ARCH_CORTEXR52
+	bool
+	default n
+	select ARCH_ARMV8R
+	select ARCH_HAVE_MPU
+	select ARCH_HAVE_TESTSET
+
+config ARCH_ARMV8M
+	bool
+	default n
+	select ARCH_HAVE_CPUINFO
+	select ARCH_HAVE_DEBUG
+	select ARCH_HAVE_PERF_EVENTS
+
+config ARCH_CORTEXM23
+	bool
+	default n
+	select ARM_THUMB
+	select ARCH_ARMV8M
+	select ARCH_HAVE_IRQPRIO
+	select ARCH_HAVE_IRQTRIGGER
+	select ARCH_HAVE_RAMVECTORS
+	select ARCH_HAVE_HIPRI_INTERRUPT
+	select ARCH_HAVE_RESET
+	select ARCH_HAVE_TESTSET
+	select ARCH_HAVE_HARDFAULT_DEBUG
+
+config ARCH_CORTEXM33
+	bool
+	default n
+	select ARM_THUMB
+	select ARCH_ARMV8M
+	select ARCH_HAVE_IRQPRIO
+	select ARCH_HAVE_IRQTRIGGER
+	select ARCH_HAVE_RAMVECTORS
+	select ARCH_HAVE_HIPRI_INTERRUPT
+	select ARCH_HAVE_RESET
+	select ARCH_HAVE_TESTSET
+	select ARCH_HAVE_HARDFAULT_DEBUG
+	select ARCH_HAVE_MEMFAULT_DEBUG
+	select ARCH_HAVE_BUSFAULT_DEBUG
+	select ARCH_HAVE_USAGEFAULT_DEBUG
+	select ARCH_HAVE_SECUREFAULT_DEBUG if ARCH_TRUSTZONE_SECURE
+
+config ARCH_CORTEXM35P
+	bool
+	default n
+	select ARM_THUMB
+	select ARCH_ARMV8M
+	select ARCH_HAVE_IRQPRIO
+	select ARCH_HAVE_IRQTRIGGER
+	select ARCH_HAVE_RAMVECTORS
+	select ARCH_HAVE_HIPRI_INTERRUPT
+	select ARCH_HAVE_RESET
+	select ARCH_HAVE_TESTSET
+	select ARCH_HAVE_HARDFAULT_DEBUG
+	select ARCH_HAVE_MEMFAULT_DEBUG
+	select ARCH_HAVE_BUSFAULT_DEBUG
+	select ARCH_HAVE_USAGEFAULT_DEBUG
+	select ARCH_HAVE_SECUREFAULT_DEBUG if ARCH_TRUSTZONE_SECURE
+
+config ARCH_CORTEXM55
+	bool
+	default n
+	select ARM_THUMB
+	select ARCH_ARMV8M
+	select ARCH_HAVE_IRQPRIO
+	select ARCH_HAVE_IRQTRIGGER
+	select ARCH_HAVE_RAMVECTORS
+	select ARCH_HAVE_HIPRI_INTERRUPT
+	select ARCH_HAVE_RESET
+	select ARCH_HAVE_TESTSET
+	select ARCH_HAVE_HARDFAULT_DEBUG
+	select ARCH_HAVE_MEMFAULT_DEBUG
+	select ARCH_HAVE_BUSFAULT_DEBUG
+	select ARCH_HAVE_USAGEFAULT_DEBUG
+	select ARCH_HAVE_SECUREFAULT_DEBUG if ARCH_TRUSTZONE_SECURE
+
+config ARCH_CORTEXM85
+	bool
+	default n
+	select ARM_THUMB
+	select ARCH_ARMV8M
+	select ARCH_HAVE_IRQPRIO
+	select ARCH_HAVE_IRQTRIGGER
+	select ARCH_HAVE_RAMVECTORS
+	select ARCH_HAVE_HIPRI_INTERRUPT
+	select ARCH_HAVE_RESET
+	select ARCH_HAVE_TESTSET
+	select ARCH_HAVE_HARDFAULT_DEBUG
+	select ARCH_HAVE_MEMFAULT_DEBUG
+	select ARCH_HAVE_BUSFAULT_DEBUG
+	select ARCH_HAVE_USAGEFAULT_DEBUG
+	select ARCH_HAVE_SECUREFAULT_DEBUG if ARCH_TRUSTZONE_SECURE
+
+config ARCH_ARMV8R
+	bool
+	default n
+	select ARCH_HAVE_CPUINFO
+	select ARCH_HAVE_PERF_EVENTS
+	select ONESHOT
+	select ALARM_ARCH

arch/arm/Makefile

@@ -0,0 +1,91 @@
+############################################################################
+# arch/arm/src/Makefile
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+# NXBASE is mandatory
+# It should provided to each of the NuttX's subsys
+# either by environment variable or
+# by command-line variable assignment.
+
+ifeq ($(realpath ${NXBASE}),)
+  $(error "NXBASE is not defined or invalid path")
+endif
+
+CONFIGMK := $(realpath ${NXBASE}/tools/Config.mk)
+ifeq (${CONFIGMK},)
+  $(error "Invalid Config.mk path: ${NXBASE}/tools/Config.mk")
+else
+  include ${CONFIGMK}
+endif
+
+# NXOUT is mandatory
+# It should provided to each of the NuttX's subsys
+# either by environment variable or
+# by command-line variable assignment.
+
+ifeq ($(realpath ${NXOUT}),)
+  $(error "NXOUT is not defined or invalid path")
+endif
+
+CFG := $(realpath ${NXOUT}/.config)
+ifeq (${CFG},)
+  $(error "Invalid .config path: ${CFG}")
+else
+  include ${CFG}
+endif
+
+CFGH := $(realpath ${NXOUT}/nuttx/config.h)
+ifeq (${CFGH},)
+  $(error "Invalid config.h path: ${CFGH}")
+endif
+
+ARCH_SUBDIR := $(patsubst "%",%,${CONFIG_ARCH_FAMILY})
+ARCH_SRCDIR := ${CURDIR}
+
+INCLUDES += -I${ARCH_SRCDIR}/include
+INCLUDES += -I${NXOUT}
+INCLUDES += -I${NXBASE}/include
+INCLUDES += -I${NXBASE}/soc/arm/include
+
+VPATH += ${ARCH_SRCDIR}/common
+include ${ARCH_SRCDIR}/common/Make.defs
+
+VPATH += ${ARCH_SRCDIR}/${ARCH_SUBDIR}
+include ${ARCH_SRCDIR}/${ARCH_SUBDIR}/Make.defs
+
+CFLAGS += ${INCLUDES}
+AFLAGS += ${INCLUDES}
+
+BIN = libarch.a
+
+all: $(BIN)
+
+STARTUP_OBJS = $(STARTUP_CSRC:.c=.o)
+HEAD_OBJ = $(HEAD_ASRC:.S=.o)
+
+COBJS = $(CSRCS:.c=.o)
+AOBJS = $(ASRCS:.S=.o)
+
+SRCS = ${ASRCS} ${CSRCS} ${STARTUP_CSRC} ${HEAD_ASRC}
+OBJS = ${AOBJS} ${COBJS} ${STARTUP_OBJS} ${HEAD_OBJ}
+
+${STARTUP_OBJS}: %.o: %.c
+  $(call COMPILE, $<, $@)

arch/arm/arm/Make.defs

@@ -1,5 +1,5 @@
 ############################################################################
-# arch/z80/src/z8/Make.defs
+# arch/arm/src/arm/Make.defs
 #
 # SPDX-License-Identifier: Apache-2.0
 #
@@ -20,19 +20,24 @@
 #
 ############################################################################
 
-HEAD_SSRC = z8_head.S
+HEAD_ASRC  = arm_head.S
 
+<<<<<<< HEAD:arch/z80/src/z8/Make.defs
 CMN_CSRCS  = z80_allocateheap.c z80_createstack.c z80_doirq.c
 CMN_CSRCS += z80_exit.c z80_idle.c z80_interruptcontext.c
 CMN_CSRCS += z80_initialize.c z80_mdelay.c z80_nputs.c
 CMN_CSRCS += z80_releasestack.c z80_switchcontext.c
 CMN_CSRCS += z80_stackframe.c z80_udelay.c z80_usestack.c
+=======
+CSRCS += arm_dataabort.c arm_doirq.c arm_initialstate.c
+CSRCS += arm_prefetchabort.c arm_schedulesigaction.c
+CSRCS += arm_sigdeliver.c arm_syscall.c arm_tcbinfo.c
+CSRCS += arm_undefinedinsn.c
+>>>>>>> 753c7b2dd6 (walnux: moveout):arch/arm/arm/Make.defs
 
-CHIP_SSRCS  = z8_vector.S z8_saveusercontext.S z8_restorecontext.S
+ASRCS += arm_cache.S arm_vectors.S arm_vectortab.S
-CHIP_CSRCS  = z8_initialstate.c z8_irq.c z8_saveirqcontext.c
+ASRCS += arm_saveusercontext.S
-CHIP_CSRCS += z8_schedulesigaction.c z8_sigdeliver.c
-CHIP_CSRCS += z8_serial.c z8_i2c.c z8_registerdump.c
 
-ifneq ($(CONFIG_SCHED_TICKLESS),y)
+ifeq ($(CONFIG_LEGACY_PAGING),y)
-CHIP_CSRCS += z8_timerisr.c
+  CSRCS += arm_pginitialize.c arm_checkmapping.c arm_allocpage.c arm_va2pte.c
 endif

arch/arm/arm/arm_tcbinfo.c

@@ -27,7 +27,7 @@
 #include <nuttx/config.h>
 
 #include <nuttx/sched.h>
-#include <arch/irq.h>
+#include <irq.h>
 #include <sys/param.h>
 
 /****************************************************************************

arch/arm/armv6-m/Make.defs

@@ -20,10 +20,6 @@
 #
 ############################################################################
 
-# Common ARM files
-
-include common/Make.defs
-
 CMN_ASRCS += arm_exception.S arm_saveusercontext.S
 
 CMN_CSRCS += arm_cpuinfo.c arm_doirq.c arm_hardfault.c arm_initialstate.c
@@ -35,9 +31,17 @@ ifneq ($(CONFIG_ARCH_HAVE_CUSTOM_VECTORS),y)
   CMN_CSRCS += arm_vectors.c
 endif
 
+<<<<<<< HEAD:arch/z80/src/z80/Make.defs
+CMN_CSRCS  = z80_allocateheap.c z80_createstack.c z80_doirq.c
+CMN_CSRCS += z80_exit.c z80_initialize.c z80_interruptcontext.c
+CMN_CSRCS += z80_idle.c z80_mdelay.c z80_releasestack.c
+CMN_CSRCS += z80_switchcontext.c z80_stackframe.c
+CMN_CSRCS += z80_udelay.c z80_usestack.c
+=======
 ifneq ($(filter y,$(CONFIG_DEBUG_FEATURES)$(CONFIG_ARM_COREDUMP_REGION)),)
   CMN_CSRCS += arm_dumpnvic.c
 endif
+>>>>>>> 753c7b2dd6 (walnux: moveout):arch/arm/armv6-m/Make.defs
 
 ifeq ($(CONFIG_ARCH_RAMVECTORS),y)
   CMN_CSRCS += arm_ramvec_initialize.c arm_ramvec_attach.c

arch/arm/armv6-m/arm_exception.S

@@ -41,7 +41,7 @@
 
 #include <nuttx/config.h>
 
-#include <arch/irq.h>
+#include <irq.h>
 
 #ifdef CONFIG_SMP
 #  include "chip.h"

arch/arm/armv6-m/arm_hardfault.c

@@ -31,7 +31,7 @@
 #include <assert.h>
 #include <debug.h>
 
-#include <arch/irq.h>
+#include <irq.h>
 
 #include "nvic.h"
 #include "arm_internal.h"

arch/arm/armv6-m/arm_svcall.c

@@ -33,7 +33,7 @@
 #include <debug.h>
 #include <syscall.h>
 
-#include <arch/irq.h>
+#include <irq.h>
 #include <nuttx/macro.h>
 #include <nuttx/sched.h>
 

arch/arm/armv6-m/arm_tcbinfo.c

@@ -27,7 +27,7 @@
 #include <nuttx/config.h>
 
 #include <nuttx/sched.h>
-#include <arch/irq.h>
+#include <irq.h>
 #include <sys/param.h>
 
 /****************************************************************************

arch/arm/armv6-m/arm_trigger_irq.c

@@ -30,7 +30,7 @@
 #include <assert.h>
 
 #include <nuttx/arch.h>
-#include <arch/irq.h>
+#include <irq.h>
 
 #include "arm_internal.h"
 #include "nvic.h"

arch/arm/armv6-m/ram_vectors.h

@@ -28,7 +28,7 @@
  ****************************************************************************/
 
 #include <nuttx/config.h>
-#include <arch/irq.h>
+#include <irq.h>
 
 #include "arm_internal.h"
 #include "chip.h"

arch/arm/armv7-a/Kconfig

@@ -62,6 +62,17 @@ config ARMV7A_HAVE_L2CC
 		Selected by the configuration tool if the architecture supports any
 		kind of L2 cache.
 
+config ARMV7A_SMP_BUSY_WAIT
+	bool "Busy wait when SMP boot"
+	default n
+	depends on SMP
+	---help---
+		Enables busy wait when SMP boot
+
+config ARMV7A_SMP_BUSY_WAIT_FLAG_ADDR
+	hex "Busy wait flag address"
+	depends on ARMV7A_SMP_BUSY_WAIT
+
 config ARMV7A_HAVE_L2CC_PL310
 	bool
 	default n

arch/arm/armv7-a/Make.defs

@@ -20,10 +20,6 @@
 #
 ############################################################################
 
-# Common ARM files
-
-include common/Make.defs
-
 # The vector table is the "head" object, i.e., the one that must forced into
 # the link in order to draw in all of the other components
 

arch/arm/armv7-a/arm_addrenv_ustack.c

@@ -87,7 +87,7 @@
 #include <nuttx/sched.h>
 #include <nuttx/addrenv.h>
 
-#include <arch/irq.h>
+#include <irq.h>
 
 #include "mmu.h"
 #include "addrenv.h"

arch/arm/armv7-a/arm_cpu_psci.c

@@ -28,7 +28,7 @@
 #include <debug.h>
 #include <assert.h>
 #include <nuttx/arch.h>
-#include <arch/irq.h>
+#include <irq.h>
 #include <arch/chip/chip.h>
 #include <nuttx/spinlock.h>
 

arch/arm/armv7-a/arm_cpu_psci.h

@@ -27,7 +27,7 @@
  * Included Files
  ****************************************************************************/
 #include <nuttx/config.h>
-#include <arch/irq.h>
+#include <irq.h>
 #include <arch/chip/chip.h>
 #include <arch/syscall.h>
 

arch/arm/armv7-a/arm_cpuhead.S

@@ -26,7 +26,7 @@
 
 #include <nuttx/config.h>
 
-#include <arch/irq.h>
+#include <irq.h>
 
 #include "arm.h"
 #include "sctlr.h"