diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/board/emulation/acpi.rst | 23 | ||||
| -rw-r--r-- | doc/board/emulation/index.rst | 1 | ||||
| -rw-r--r-- | doc/develop/devicetree/control.rst | 3 |
3 files changed, 27 insertions, 0 deletions
diff --git a/doc/board/emulation/acpi.rst b/doc/board/emulation/acpi.rst new file mode 100644 index 00000000000..17b68e1b780 --- /dev/null +++ b/doc/board/emulation/acpi.rst @@ -0,0 +1,23 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +ACPI on QEMU +============ + +QEMU can provide ACPI tables on ARM, RISC-V (since QEMU v8.0.0), and x86. + +The following U-Boot settings are needed for ACPI support:: + + CONFIG_CMD_QFW=y + CONFIG_ACPI=y + CONFIG_GENERATE_ACPI_TABLE=y + +On x86 these settings are already included in the defconfig files. ARM and +RISC-V default to use device-trees. + +Instead of updating the configuration manually you can add the configuration +fragment `acpi.config` to the make command for initializing the configuration. +E.g. + +.. code-block:: bash + + make qemu-riscv64_smode_defconfig acpi.config diff --git a/doc/board/emulation/index.rst b/doc/board/emulation/index.rst index 932c65adebb..d3d6b8f3d86 100644 --- a/doc/board/emulation/index.rst +++ b/doc/board/emulation/index.rst @@ -6,6 +6,7 @@ Emulation .. toctree:: :maxdepth: 1 + acpi blkdev ../../usage/semihosting qemu-arm diff --git a/doc/develop/devicetree/control.rst b/doc/develop/devicetree/control.rst index cbb65c9b177..11c92d440f4 100644 --- a/doc/develop/devicetree/control.rst +++ b/doc/develop/devicetree/control.rst @@ -108,6 +108,9 @@ If CONFIG_OF_BOARD is defined, a board-specific routine will provide the devicetree at runtime, for example if an earlier bootloader stage creates it and passes it to U-Boot. +If CONFIG_BLOBLIST is defined, the devicetree may come from a bloblist passed +from a previous stage, if present. + If CONFIG_SANDBOX is defined, then it will be read from a file on startup. Use the -d flag to U-Boot to specify the file to read, -D for the default and -T for the test devicetree, used to run sandbox unit tests. |
