mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-09-09 14:32:28 +00:00
04e874485b
This commit splits the 'locore' and 'main' memory regions into separate executable images and specifies the 'locore' as the boot kernel, in order to prevent the QEMU direct multiboot kernel loader from overwriting the BIOS and option ROM areas located in between the two memory regions. The Zephyr x86-64 kernel image consists of two discontiguous load memory regions: 'locore' at 0x8000 and 'main' at 0x100000, but the QEMU treats these as single contiguous memory region starting at 0x8000 and ending at (0x100000 + MAIN_IMAGE_SIZE - 1). This results in the direct multiboot kernel loader overwriting the BIOS and option ROM areas as part of the kernel loading process, and causes any writable system regions to be corrupted (e.g. KVMVAPIC ROM). By splitting the two discontiguous memory regions into separate images and specifying only the boot image (i.e. 'locore') as the '-kernel', it is possible to work around the QEMU direct kernel loading design limitation. This workaround is required to support the QEMU v4.2.0 and above. For more details, refer to the issue zephyrproject-rtos/sdk-ng#168. Signed-off-by: Stephanos Ioannidis <root@stephanos.io> |
||
|---|---|---|
| .. | ||
| app | ||
| backports | ||
| bintools | ||
| compiler | ||
| emu | ||
| flash | ||
| ide | ||
| linker/ld | ||
| reports | ||
| toolchain | ||
| usage | ||
| util | ||
| boards.cmake | ||
| ccache.cmake | ||
| cfb.cmake | ||
| dts.cmake | ||
| extensions.cmake | ||
| extra_flags.cmake | ||
| gcc-m-cpu.cmake | ||
| generic_toolchain.cmake | ||
| git.cmake | ||
| hex.cmake | ||
| host-tools.cmake | ||
| kconfig.cmake | ||
| kobj.cmake | ||
| pristine.cmake | ||
| python.cmake | ||
| target_toolchain.cmake | ||
| version.cmake | ||
| zephyr_module.cmake | ||