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wangjianyu3 021a113203 boards/lckfb-szpi-esp32s3: switch all defconfigs to nxinit entrypoint
Switch all lckfb-szpi-esp32s3 defconfigs from nsh_main to nxinit
(init_main) as the system init entry point, for consistency across
the whole board (adb and txtable already used nxinit, see
73c949c87e).

For each defconfig (adb, camera, es7210, fastboot, fastboot_tcp,
gc0308, gpio, lcd, lvgl, nsh, pca9557, psram, pwm, qmi8658, sdmmc,
usb_device, uvc, vncviewer):

- CONFIG_INIT_ENTRYPOINT="nsh_main" -> "init_main"
- CONFIG_INIT_STACKSIZE raised to 8192. The default init and nsh
  stacks overflow at runtime on this target: init_main overflows a
  smaller stack (observed 100% usage with a corrupted task name),
  clobbering the global inode/mount tree so the procfs mount
  installed by board bringup disappears; "ls /" then crashes in
  read_pseudodir and "ps" reports "/proc not mounted". Raising
  CONFIG_INIT_STACKSIZE to 8192 drops init_main to about 61% usage
  on hardware, and /proc stays mounted.
- CONFIG_SYSTEM_NXINIT=y added, plus its direct Kconfig dependencies
  (CONFIG_EXPERIMENTAL, CONFIG_LIBC_EXECFUNCS, CONFIG_SCHED_CHILD_STATUS
  which in turn selects CONFIG_SCHED_HAVE_PARENT)
- CONFIG_SYSTEM_NSH_STACKSIZE=8192 added: the nsh console service
  launched by init.rc also needs a larger stack, otherwise it
  crashes in getumask while running "ps" because its stack is too
  small to reach the procfs read path.
- ETC_ROMFS/FS_ROMFS added where missing, needed to ship init.rc via
  the board's ROMFS

nsh continues to run as a console service started by init.rc
(boards/xtensa/esp32s3/common/src/etc/init.d/init.rc), not as the
top-level init, matching the adb/txtable configs.

Verified all 20 defconfigs (adb, camera, es7210, fastboot,
fastboot_tcp, fastboot_usb, gc0308, gpio, lcd, lvgl, nsh, pca9557,
psram, pwm, qmi8658, sdmmc, txtable, usb_device, uvc, vncviewer) build
cleanly with `make`. Flashed nsh and es7210 to hardware:
- nsh: UART0 console reachable, "ps" shows init_main (PID 2) as the
  parent of nsh's "sh" (PID 3).
- es7210: adb reachable, "ps" shows init_main (PID 4) as the parent of
  both "sh" (PID 5) and "adbd" (PID 6).

Assisted-by: Kiro:claude-sonnet-5
Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
2026-08-25 11:03:11 -03:00
.github build(deps): bump docker/setup-buildx-action from 4.2.0 to 4.3.0 2026-08-24 15:30:16 +08:00
arch {arm,xtensa}/otg: indent switch bodies per the coding standard. 2026-08-25 16:07:35 +08:00
audio audio: limit the buffer count guard to shared ring requests 2026-08-05 07:58:53 +02:00
binfmt sched: add supplementary group IDs (setgroups/getgroups/initgroups) 2026-08-12 16:06:03 -03:00
boards boards/lckfb-szpi-esp32s3: switch all defconfigs to nxinit entrypoint 2026-08-25 11:03:11 -03:00
cmake sched,fs,docs: support setuid sudo helper 2026-08-18 15:57:52 +08:00
crypto tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
Documentation Documentation/stm32h5: LPTIM is supported. 2026-08-25 13:37:44 +08:00
drivers drivers/pci/pci.c: fix nxstyle issues 2026-08-25 01:40:32 +08:00
dummy build: add initial cmake build system 2023-07-08 13:50:48 +08:00
fs nuttx/atomic: replace atomic_fetch_xxx with atomic_xxx just like zephyr 2026-08-24 13:20:45 +08:00
graphics graphics/nxterm: consume SGR escape sequences 2026-08-23 10:46:02 +08:00
include ioexpander/ch422g: add a driver for the WCH CH422G I/O 2026-08-24 09:39:58 +02:00
libs arch/tricore: drop illd dependence for atomic 2026-08-25 10:07:25 +08:00
mm cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
net net/local: fix SCM_RIGHTS pointer and memory corruption 2026-08-21 02:19:10 +08:00
openamp cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
pass1 tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
sched nuttx/atomic: replace atomic_fetch_xxx with atomic_xxx just like zephyr 2026-08-24 13:20:45 +08:00
syscall sched: add supplementary group IDs (setgroups/getgroups/initgroups) 2026-08-12 16:06:03 -03:00
tools tools/nxstyle: require a blank line after a function's declarations 2026-08-25 19:20:08 +08:00
video tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
wireless nuttx/atomic: replace atomic_fetch_xxx with atomic_xxx just like zephyr 2026-08-24 13:20:45 +08:00
.asf.yaml github: master branch protection tune. 2025-05-07 18:37:13 -05:00
.codespell-ignore-lines arch/arm: Reserve r10 via ARCHCFLAGS and hoist the PIC module flags. 2026-07-24 23:09:08 +08:00
.codespellrc arch/arm/rp23xx: Add hardware TRNG driver for /dev/random. 2026-07-25 15:06:56 +08:00
.editorconfig .editorconfig: fix character encoding property specification 2025-11-28 19:12:13 +08:00
.gitignore boards/risc-v/eic7700x: Adopt the common board layout. 2026-08-19 01:40:57 +08:00
.gitmessage docs/contributing: Add a commit message template 2025-06-03 17:33:24 +08:00
.pre-commit-config.yaml pre-commit: enable codespell checks 2025-05-05 12:34:39 +08:00
.yamllint feat: add a GitHub action to lint the YAML files 2020-12-15 09:52:04 -06:00
AUTHORS AUTHORS: add Jorge Guzman 2026-08-25 08:43:13 -04:00
CMakeLists.txt Revert "cmake: normalize .config on reconfigure" 2026-08-13 07:54:00 +02:00
CONTRIBUTING.md contributing: Add requirement for 'Assisted-by' commit field 2026-07-12 09:42:28 +08:00
INVIOLABLES.md
Kconfig drivers/clk: Add debug output levels. 2026-08-16 23:23:04 +08:00
LICENSE libs/libdsp: Add Matrix operations 2026-07-11 14:55:59 -03:00
Makefile !boards: enforce secure ROMFS passwd and TEA key setup 2026-07-09 22:41:11 +08:00
NOTICE Remove the double blank line from source files 2022-02-20 20:10:14 +01:00
README.md ci/testing: Add MemBrowse Integration 2026-06-18 12:07:41 -03:00
ReleaseNotes Documentation: move ReleaseNotes 2023-09-26 20:41:00 +08:00

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Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).

For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.

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The old NuttX documentation is still available in the Apache wiki.

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