- Introduced Kconfig options for stdbit.h, allowing architecture-specific and generic implementations.
- Added new documentation for stdbit.h, detailing its usage and configuration.
- Updated CMake and Makefile to handle the inclusion of stdbit.h based on configuration settings.
This enhances the NuttX library with optional C23 bit manipulation utilities, improving functionality for architectures that support it.
Signed-off-by: Arjav Patel <arjav1528@gmail.com>
This PR adds complete driver support for the Xilinx UART Peripheral System (XUARTPS)
in the NuttX serial driver framework. The implementation includes the core driver code
(uart_xlnx_ps.c), configuration files (Kconfig-xlnxps), header definitions (uart_xlnx_ps.h),
and integration with the existing NuttX build system (CMakeLists.txt, Make.defs, Kconfig).
The driver supports UART0 configuration with customizable parameters (base address,
clock frequency, IRQ number, baud rate, parity, data bits, stop bits), RX/TX buffer sizing,
hardware flow control (RTS/CTS), interrupt-driven data transfer, and console mapping for XUARTPS UART0.
It also provides standard serial driver operations (setup, shutdown, attach/detach, ioctl, send/receive)
and early serial initialization for boot-time console access.
Signed-off-by: chao an <anchao.archer@bytedance.com>
When CONFIG_LIBM_TOOLCHAIN is enabled, include_next the toolchain\n<c\+\+>/cmath wrapper instead of importing symbols from the NuttX\ncmath shim. This avoids include-order recursion and lets libstdc\+\+\nresolve std::abs/std::acos/... against the matching toolchain C\nmath.h declarations.\n\nKeep the existing NuttX cmath namespace path unchanged for non-\ntoolchain libm configurations.
Signed-off-by: aviralgarg05 <gargaviral99@gmail.com>
Mainline Linux doesn't use data encapsuation or flow control in its
tty_rpmsg driver. Create a NuttX counterpart which matches this
implementation.
This driver uses the static "rpmsg-tty" name to connect with the
remote service.
Signed-off-by: Maarten Zanders <maarten@zanders.be>
Add support for ST7796 TFT LCD controller (320x480). The driver
implements the NuttX framebuffer interface for SPI-connected displays.
Features:
- SPI interface with CONFIG_SPI_CMDDATA for D/C pin control;
- RGB565 (16-bit) and RGB666 (18-bit) color formats;
- Runtime rotation support (0, 90, 180, 270 degrees) via MADCTL;
- Board-provided configuration via st7796_config_s structure;
- Partial screen update via updatearea for efficient rendering;
- Persistent swap buffer to avoid per-frame allocations;
- Proper ST7796S initialization sequence with documented timing;
The driver uses a board-provided configuration structure allowing
flexible setup of resolution, SPI frequency, color depth, and
initial MADCTL value without requiring Kconfig options in the
generic driver.
Architecture changes in this revision as per request:
- Moved internal register commands to .c file (private)
- Moved MADCTL bit definitions to .c file (private)
- Moved struct st7796_cmd_s to .c file (private)
- Converted MADCTL orientation macros to absolute values
- Moved CONFIG_SPI_CMDDATA error check to beginning of file
- Removed duplicated CONFIG_SPI_CMDDATA guards
- Public header contains only board configuration API
- Changed the Kconfig auto-select FB from 'select' to 'depends on'
Tested with LVGL graphics library on STM32H753ZI board (my own port).
Signed-off-by: Vinicius May <vmay.sweden@gmail.com>
Add packed attribute to lzf header structs to prevent the compiler
from optimizing lzf_magic array initialization into wider store
instructions (e.g. st.h), which can cause misaligned access
exceptions on architectures that do not support unaligned memory access.
Signed-off-by: zhangyuan29 <zhangyuan29@xiaomi.com>
Mark memset and memcpy as used_code to fix issues with GCC LTO and CMake
which throws many "undefined reference to memset" errors.
used_code force the compiler to emit the memset symbol under LTO.
Signed-off-by: raiden00pl <raiden00@railab.me>
Add a generic kmatrix lower-half with polling/debounce, STM32 board adapters, Kconfig options, a public API header, and a test example/documentation.
Signed-off-by: Felipe Moura <moura.fmo@gmail.com>
decouple kbd / keypad.
Fix some comments
add documentation
fix rule issues
Update CMakeLists.txt
update documentation.
improve documentation
Fix incorrect flag handling and string escaping in the `make host_info`
diagnostic target.
Previously, CFLAGS, CXXFLAGS, and LDFLAGS were passed in a form that caused
improper splitting and quoting, which resulted in malformed output and
incorrectly escaped configuration values such as CONFIG_APPS_DIR.
This change ensures that:
- Compilation flags are passed as proper shell strings
- Flags are split correctly using shlex
- Configuration values are escaped exactly once when generating sysinfo.h
- Parsed output matches the contents of the .config file
This change affects diagnostic output only and does not modify the NuttX
build process or generated binaries.
Signed-off-by: Adwait Godbole <adwaitngodbole@gmail.com>
When the VIRTIO_RPMSG_F_CPUNAME feature is not negotiated, the driver
previously would crash due to DEBUGASSERT. This commit adds support
for a fallback mechanism:
1. Add rpmsg_virtio_probe_cpuname() API that accepts an optional cpuname
parameter to be used when VIRTIO_RPMSG_F_CPUNAME is not available.
2. Modify rptun driver to pass the cpuname from rptun device config
to rpmsg_virtio_probe_cpuname().
3. Refactor rptun device register/unregister to prioritize RPMSG device
handling before other virtio device types.
This ensures the system works correctly in scenarios where the remote
side does not support the VIRTIO_RPMSG_F_CPUNAME feature.
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
Move common virtio inline functions (virtqueue_kick_lock, virtio_malloc_buf,
virtio_zalloc_buf, etc.) from CONFIG_DRIVERS_VIRTIO guard to CONFIG_OPENAMP
guard. This allows vhost drivers to reuse these helper functions without
requiring the full virtio driver framework.
The virtio_driver structure and driver registration APIs remain under
CONFIG_DRIVERS_VIRTIO as they are specific to virtio device drivers.
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
Add vhost_get_vq_buffers() API to retrieve all chained buffers from a
virtqueue in one call. This simplifies handling of scatter-gather I/O
where data spans multiple descriptors.
The function populates an array of virtqueue_buf structures with buffer
pointers and lengths, returning the descriptor head index on success.
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
Signed-off-by: hongfengchen <hongfengchen@xiaomi.com>
Add vhost wrapper macros that map to the corresponding virtio helper
functions:
- vhost_has_feature: check if a feature is supported
- vhost_read_config_member: read a config structure member
- vhost_write_config_member: write a config structure member
Also include virtio-config.h header to support these macros.
Signed-off-by: Yongrong Wang <wangyongrong@xiaomi.com>
Guard float_t, double_t, and standard math functions with FLT_EVAL_METHOD checks. This ensures compilation when external toolchain's math.h lacks C99/C++11 definitions.
Signed-off-by: aviralgarg05 <gargaviral99@gmail.com>
Fix violations of MISRA C:2012 Rule 10.4 (operand of unsigned and signed)
in cancellation point handling code.
Changed all CANCEL_FLAG_* macro definitions and their usage to use unsigned
literals (1u instead of 1) to ensure consistent unsigned arithmetic when
performing bitwise operations. This eliminates mixed signed/unsigned operand
violations in:
- CANCEL_FLAG_NONCANCELABLE
- CANCEL_FLAG_CANCEL_ASYNC
- CANCEL_FLAG_CANCEL_PENDING
The changes affect cancellation point entry/exit logic, cancellation state
management, and cancellation type handling across both kernel and libc
implementations.
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
Fix violations of MISRA C:2012 Rule 10.4 (essential type operand of
unsigned and signed) in posix_spawn attribute handling code.
Changed all POSIX_SPAWN_* flag macro definitions to use unsigned literals
(1u instead of 1) to ensure consistent unsigned arithmetic when performing
bitwise operations. This eliminates mixed signed/unsigned operand violations
in the following flags:
- POSIX_SPAWN_RESETIDS
- POSIX_SPAWN_SETPGROUP
- POSIX_SPAWN_SETSCHEDPARAM
- POSIX_SPAWN_SETSCHEDULER
- POSIX_SPAWN_SETSIGDEF
- POSIX_SPAWN_SETSIGMASK
- POSIX_SPAWN_SETSID
Updated all flag checking comparisons in spawn_execattrs() to compare
against 0u instead of 0 for consistency.
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
This commit simplified the rbtree in hrtimer and provided better
branchless compare function.
Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
This commit inlined the `hrtimer_start` to allow the compiler to optimize at least 1 branch in
hrtimer_start.
Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
Refactor heap pointer storage by moving us_heap field from userspace_s
to the nested userspace_data_s structure, enabling future extensibility
of user-space data without modifying the core userspace_s interface across
all board-specific implementations.
Signed-off-by: hujun5 <hujun5@xiaomi.com>
Add rpmsg_get_timestamp() API to get the TX/RX timestamps of an rpmsg
buffer. This is useful for latency measurement and debugging purposes.
The new rpmsg_timestamp_s structure contains:
- tx_nsec: timestamp when the buffer was transmitted
- rx_nsec: timestamp when the buffer was received
Signed-off-by: liaoao <liaoao@xiaomi.com>
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
Add explicit type casts to uint32_t for time conversion macro divisors to
comply with MISRA C-2012 Rules 10.1, 10.3, 11.1, 11.3, and 11.4. This fixes
Coverity warnings and improves type safety in clock_time2ticks_floor and related
time conversion operations.
Signed-off-by: hujun5 <hujun5@xiaomi.com>
Add USEC2MSEC macro to provide a convenient and consistent interface for
converting microseconds to milliseconds, complementing the existing SEC, USEC,
and NSEC conversion macros and improving code readability.
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
Follow the virtio spec:
For the device-specific configuration space, the driver MUST use 8
bit wide accesses for 8 bit wide fields, 16 bit wide and aligned
accesses for 16 bit wide fields and 32 bit wide and aligned accesses
for 32 and 64 bit wide fields.
For a string in the virtio config space, we should should byte to
byte read operations to read this string, so add a api
virtio_read_config_bytes() for this.
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
This patch adds an AUTOSAR-style CRC library used by E2E functionality.
It introduces multiple CRC variants (CRC8, CRC16, CRC32, CRC64) and the
corresponding public headers and implementation files.
Key changes:
- Public headers: `include/nuttx/crc8.h`, `include/nuttx/crc16.h`,
`include/nuttx/crc32.h`, `include/nuttx/crc64.h` with new APIs for
specific polynomial variants and incremental (part) helpers.
- Implementations added under `libs/libc/misc/` for several polynomials:
- `lib_crc16h1021.c` (CRC-16 CCITT-FALSE)
- `lib_crc16h8005.c`
- `lib_crc32h04c11db7.c`
- `lib_crc32hf4acfb13.c`
- `lib_crc64emac.c`
- `lib_crc8h1d.c`
- `lib_crc8h2f.c`
- Build files updated to include the new sources.
This addition provides low-level CRC primitives required by higher-level
protocols and test suites.
Signed-off-by: yukangzhi <yukangzhi@xiaomi.com>
Implement Linux-compatible TFD_TIMER_CANCEL_ON_SET flag for timerfd to
allow applications to detect discontinuous changes to CLOCK_REALTIME.
Background:
According to Linux timerfd_create(2) man page, when a timerfd is created
with CLOCK_REALTIME and TFD_TIMER_CANCEL_ON_SET flag is specified, the
read() operation should fail with ECANCELED if the real-time clock
undergoes a discontinuous change. This allows applications to detect
and respond to system time changes.
Implementation:
1. Add clock notifier infrastructure (clock_notifier.h/c) to notify
interested parties when system time changes
2. Implement TFD_TIMER_CANCEL_ON_SET flag support in timerfd
3. Register timerfd with clock notifier when flag is set
4. Cancel timer and return ECANCELED when clock change is detected
5. Notify clock changes in:
- clock_settime()
- clock_initialize()
- clock_timekeeping_set_wall_time()
- rpmsg_rtc time synchronization
Changes include:
- New files: include/nuttx/clock_notifier.h, sched/clock/clock_notifier.c
- Modified: fs/vfs/fs_timerfd.c to handle TFD_TIMER_CANCEL_ON_SET
- Modified: clock subsystem to call notifier chain on time changes
- Modified: rpmsg_rtc to notify time changes during sync
Use case example:
Applications using timerfd with absolute time can now detect when
system time is adjusted (e.g., NTP sync, manual time change) and
take appropriate action such as recalculating timeouts or updating
scheduled events.
Reference: https://man7.org/linux/man-pages/man2/timerfd_create.2.html
Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
Replace left-shift of 1 by 31 bits with direct hexadecimal constant
to eliminate undefined behavior warning when left-shifting signed values
beyond their bit width on platforms with strict sanitizer checking.
Signed-off-by: hujun5 <hujun5@xiaomi.com>
Fix linker error caused by including spinlock_type.h instead of
spinlock.h in notifier.h header file.
Error message:
undefined reference to 'spin_lock_irqsave_nopreempt'
in .text.clock_changed_notifier_call_chain
Root cause:
The notifier.h header was including <nuttx/spinlock_type.h> which only
provides type definitions, but the inline functions in notifier.h use
spinlock functions like spin_lock_irqsave_nopreempt(). These functions
are defined in <nuttx/spinlock.h>, not in spinlock_type.h.
Solution:
Change the include from <nuttx/spinlock_type.h> to <nuttx/spinlock.h>
to get both the type definitions and the function implementations.
This fixes the undefined reference error when using notifier chains
with spinlock protection.
Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
Previously, IRQ bounds checking (irq >= 0 && irq < NR_IRQS) was duplicated
across multiple IRQ subsystem functions before calling IRQ_TO_NDX(). This
led to code duplication and inconsistency.
This patch consolidates all IRQ bounds checking into the IRQ_TO_NDX() macro
itself, which now returns -EINVAL for out-of-bounds IRQ numbers. This approach:
1. Eliminates duplicated bounds checking code
2. Ensures consistent error handling across all IRQ functions
3. Simplifies caller code - just check if IRQ_TO_NDX() returns negative
4. Makes the macro behavior more predictable and self-contained
Changes:
- Modified IRQ_TO_NDX() to check (irq < 0 || irq >= NR_IRQS) and return -EINVAL
- Removed redundant IRQ range checks in irq_attach(), irq_attach_thread(),
irq_attach_wqueue(), and irqchain_detach()
- Simplified error handling to check ndx < 0 after IRQ_TO_NDX() call
This consolidation reduces code size and improves maintainability while
preserving all existing error checking functionality.
Signed-off-by: pangzhen1 <pangzhen1@xiaomi.com>
This patch adds support for managing cryptographic keys using MTD storage.
It enables the persistence of keys across reboots using a software-based key management system.
Includes fixes for compilation warnings and validation logic.
Signed-off-by: makejian <makejian@xiaomi.com>
Export the sched_note_event_ip function as a syscall under
CONFIG_SCHED_INSTRUMENTATION_DUMP. This allows user-space or
other kernel components to trigger event-type logs via the
instrumentation dump mechanism.
Signed-off-by: yukangzhi <yukangzhi@xiaomi.com>
Because enter_critical_section() changes from calling spin_lock() to calling spin_lock_wo_note(), it is necessary to count the busywait time in enter_critical_section() additionally.
Signed-off-by: wangzhi16 <wangzhi16@xiaomi.com>
Add configuration "CONFIG_SCHED_CRITMONITOR_MAXTIME_BUSYWAIT", which can record the busy waiting time to get spinlock or enter critical section.
Signed-off-by: wangzhi16 <wangzhi16@xiaomi.com>
Add NOTE_DUMP_BINARY to the note_type_e enum and implement its handling
in noteram_dump_one. This enables the recording and dumping of binary
logs in hexadecimal format, improving traceability for binary event data.
Signed-off-by: yukangzhi <yukangzhi@xiaomi.com>
Add defensive bounds validation before memory access operations to
prevent out-of-bounds access. This addresses Coverity OVERRUN defect
by ensuring array indices and buffer sizes stay within valid range.
Signed-off-by: hujun5 <hujun5@xiaomi.com>
Arjav Patel
chao an
Yuran Wu
wangchengdong
aviralgarg05
Maarten Zanders
vrmay23
zhangyuan29
raiden00pl
Felipe Moura
Adwait Godbole
yangyalei
Bowen Wang
Yongrong Wang
fangxinyong
ouyangxiangzhen
hujun5
liaoao
zhaohaiyang1
yukangzhi
dongjiuzhu1
lipengfei28
xucheng5
chenzihan1
pangzhen1
makejian
wangzhi16
ganjing