pussuw opened a new pull request, #12922:
URL: https://github.com/apache/nuttx/pull/12922
## Summary
arm64: Initial implementation of CONFIG_BUILD_KERNEL
This is the initial version for kernel mode build on the arm64 platform.
It works much in the same way as the risc-v implementation so any
highlights can be read from there.
Features that have been tested working:
- Creating address environments
- Loading init (nsh) from elf file
- Booting to nsh
- Starting other processes from nsh
- ostest runs to completion
Features that are not tested / do not work:
- SHM / shared memory support
- Kernel memory mapping (MM_KMAP)
- fork/vfork
An example qemu target is provided as a separate patch:
tools/configure.sh qemu-armv8a:knsh
## Impact
Add kernel mode for arm64, no impact on flat mode operation
## Testing
qemu-armv8a:knsh
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