45 lines
942 B
Markdown
45 lines
942 B
Markdown
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# Qemu
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## Using `runqemu`
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`runqemu` is a script provided by Yocto, that launches qemu for a specific image.
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Running in qemu can be done with
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```bash
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MACHINE=qemux86
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runqemu core-image-minimal $MACHINE ext3 qemuparams="-cpu n270"
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# Note: runqemu is a script available by sourcing oe-init-build-env
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# qemuparams="-cpu n270" is needed to emulate specific CPU
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# See runqemu $MACHINE qemuparams="-cpu help"
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```
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<info data-markdown>
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`-cpu n270` Configure the guest CPU to be Intel Atom. `-cpu help` lists available CPUs.
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</info>
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## Directly using qemu
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### Directly booting the kernel
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```sh
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cd $POKY/tmp/deploy/images/$MACHINE
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qemu -kernel bzImage $IMAGE-$MACHINE.ext3 -cpu n270
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```
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Interesting parameters:
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Param|_
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---|---
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`-append`|Kernel command line parameters
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`-hda`|Set disk image for sda device.
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### Booting using target bootloader
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You need to generate an image using WIC.
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```sh
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qemu build/*-sda.direct -cpu n270
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```
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