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There are user cases that a developer wants to add both in-tree and out-of-tree devicetrees to fitimage, and this is quite normal, for instance, a developer might need the devicetrees from kernel source meanwhile maintaining his/her own devicetree overlays to be applied on top of them. To support that, we now allow KERNEL_DEVICETREE and EXTERNAL_KERNEL_DEVICETREE to be both set in configuration files, and the devicetrees in EXTERNAL_KERNEL_DEVICETREE have higher priority to override the same names in KERNEL_DEVICETREE. (From OE-Core rev: c461b245076be066512ac7b074020f6032056b8d) Signed-off-by: Ming Liu <liu.ming50@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
QEMU Emulation Targets ====================== To simplify development, the build system supports building images to work with the QEMU emulator in system emulation mode. Several architectures are currently supported in 32 and 64 bit variants: * ARM (qemuarm + qemuarm64) * x86 (qemux86 + qemux86-64) * PowerPC (qemuppc only) * MIPS (qemumips + qemumips64) Use of the QEMU images is covered in the Yocto Project Reference Manual. The appropriate MACHINE variable value corresponding to the target is given in brackets.