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android / trusty / lk / common / 42e0912b
commit42e0912b24afea98b24c4691511f5b514a57847c[log] [tgz]
authorArve Hjønnevåg <arve@android.com>Wed Oct 18 16:44:27 2023 -0700
committerArve Hjønnevåg <arve@android.com>Tue Oct 24 19:22:36 2023 +0000
treedaf3c5bd1e3afa81b57ad9e71ce6f6ffc70a56f4
parent62bf2573e639ce39e0ded11bd9da6605d2c3b9b0 [diff]
arch: x86: mmu: Reject memory mapping with unsupported flags

Return ERR_NOT_SUPPORTED if arch_mmu_map is called with unsupported
flags. Also fix mapping of cache type bits so
ARCH_MMU_FLAG_UNCACHED_DEVICE is mapped as uncached instead of cached
and undefined types with bit 1 set are interpreted as
ARCH_MMU_FLAG_UNCACHED_DEVICE.

Bug: 305099000
Change-Id: I724c25e39def09d7befca60f9747158f457615b9
1 file changed
tree: daf3c5bd1e3afa81b57ad9e71ce6f6ffc70a56f4
  1. app/
  2. arch/
  3. dev/
  4. external/
  5. hosttests/
  6. include/
  7. kernel/
  8. lib/
  9. make/
  10. platform/
  11. target/
  12. tools/
  13. top/
  14. .clang-format
  15. .gitignore
  16. build-config-kerneltests
  17. engine.mk
  18. kerneltests-inc.mk
  19. LICENSE
  20. lk_inc.mk.example
  21. makefile
  22. README.md
README.md

LK

The LK embedded kernel. An SMP-aware kernel designed for small systems.

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

See https://github.com/littlekernel/lk/wiki for documentation.

Builds

Build Status

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 1: for ubuntu: sudo apt-get install gcc-arm-none-eabi or fetch a prebuilt toolchain from http://newos.org/toolchains/arm-eabi-5.3.0-Linux-x86_64.tar.xz