Masayuki Ishikawa 40843b79eb arch: arm64: Fix GICv2 detection
Summary:
- I noticed that qemu-armv8a:netnsh_smp_hv does not detect
  GICv2 on Raspi4B (ubuntu 22.04 server + qemu-8.1.2)
- According to the GIC-400 TRM, it says that the architecture
  version can be obtained from GICC_IIDR (See Table 3-7)
- This commit fixes this issue.

Impact:
- Should be none

Testing:
- Tested with qemu-armv8a:netnsh_smp_hv on
  - Raspi3B+ (ubuntu 22.04 server + qemu-8.1.2)
  - Raspi4B (ubuntu 22.04 server + qemu-8.1.2)
  - M1/MacBook Pro 2021 (macOS 13.6 + qemu-8.1.2)

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
2023-12-21 01:21:20 -08:00
2023-12-21 01:21:20 -08:00
2023-12-21 01:21:01 -08:00

POSIX Badge License Issues Tracking Badge Contributors GitHub Build Badge Documentation Badge

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.

Getting Started

First time on NuttX? Read the Getting Started guide! If you don't have a board available, NuttX has its own simulator that you can run on terminal.

Documentation

You can find the current NuttX documentation on the Documentation Page.

Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.

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

Supported Boards

NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.

Contributing

If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.

License

The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.

S
Description
Apache NuttX is a mature, real-time embedded operating system (RTOS)
Readme Multiple Licenses 518 MiB
Languages
C 95.2%
Linker Script 1.4%
Assembly 1.1%
CMake 1%
Makefile 0.6%
Other 0.6%