[PATCH v2 4/4] x86: Add qemu documentation for running as flash binary
Elliot Berman <[email protected]>
| Newsgroups | gmane.comp.boot-loaders.u-boot.general,gmane.comp.boot-loaders.u-boot |
|---|---|
| Message-ID | <[email protected]> |
Provide guidance for testing capsule updates on x86/x86_64. Signed-off-by: Elliot Berman <[email protected]> --- doc/board/emulation/qemu-x86.rst | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/doc/board/emulation/qemu-x86.rst b/doc/board/emulation/qemu-x86.rst index c604e42990e..444ac2281b2 100644 --- a/doc/board/emulation/qemu-x86.rst +++ b/doc/board/emulation/qemu-x86.rst @@ -113,6 +113,23 @@ sure the specified CPU supports 64-bit like '-cpu core2duo'. Conversely '-cpu pentium' won't work for obvious reasons that the processor only supports 32-bit. +Running as flash binary +----------------------- + +To create a U-Boot binary that can accept capsule updates, build +qemu-x86_64_defconfig or qemu-x86_defconfig with:: + + CONFIG_EFI_CAPSULE_ON_DISK=y + CONFIG_EFI_RUNTIME_UPDATE_CAPSULE=y + CONFIG_EFI_CAPSULE_FIRMWARE_RAW=y + +Invoke QEMU with: + +.. code-block:: bash + + qemu-system-x86_64 -drive if=pflash,format=raw,file=path/to/u-boot.rom,readonly=off + + Booting distros --------------- -- 2.54.0