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commitdfd9d57ca99d49f296189de8728b81b94ed2e16a[log] [tgz]
authorDmitrii Merkurev <dimorinny@google.com>Mon Dec 18 23:09:28 2023 +0000
committerDmitrii Merkurev <dimorinny@google.com>Mon Dec 18 23:09:28 2023 +0000
tree83ea5822e941db430f471d0ad6756be0d52bd00b
parentba349e45de475a356e0a1bfccadd8610d49e2943 [diff]
add bazel targets to build riscv and arm64 lk

Bug: 291553072
Change-Id: I902b835860241e258aea907aaf5daa8ad42f1e12
Signed-off-by: Dmitrii Merkurev <dimorinny@google.com>
3 files changed
tree: 83ea5822e941db430f471d0ad6756be0d52bd00b
  1. .github/
  2. app/
  3. arch/
  4. dev/
  5. docs/
  6. external/
  7. kernel/
  8. lib/
  9. make/
  10. platform/
  11. project/
  12. scripts/
  13. target/
  14. tools/
  15. top/
  16. .gitignore
  17. bazel.sh
  18. bazel.WORKSPACE
  19. BUILD
  20. engine.mk
  21. LICENSE
  22. lk_inc.mk.example
  23. makefile
  24. README.md
README.md

The Little Kernel Embedded Operating System

The LK kernel is an SMP-aware kernel designed for small systems ported to a variety of platforms and cpu architectures.

See https://github.com/littlekernel/lk for the latest version.

High Level Features

  • Fully-reentrant multi-threaded preemptive kernel
  • Portable to many 32 and 64 bit architectures
  • Support for wide variety of embedded and larger platforms
  • Powerful modular build system
  • Large number of utility components selectable at build time

Supported architectures

  • ARM32
    • Cortex-M class cores (armv6m - armv8m)
    • ARMv7+ Cortex-A class cores
  • ARM64
  • RISC-V 32 and 64bit bit in machine and supervisor mode
  • x86-32 and x86-64 386 up through modern cores
  • microblaze
  • MIPS
  • OpenRISC 1000

TODO

To build and test for ARM on linux

  1. install or build qemu. v2.4 and above is recommended.
  2. install gcc for embedded arm (see note 1)
  3. run scripts/do-qemuarm (from the lk directory)
  4. you should see ‘welcome to lk/MP’

This will get you a interactive prompt into LK which is running in qemu arm machine ‘virt’ emulation. type ‘help’ for commands.

Note: for ubuntu x86-64: sudo apt-get install gcc-arm-none-eabi or fetch a prebuilt toolchain from https://newos.org/toolchains/x86_64-elf-10.2.0-Linux-x86_64.tar.xz