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configs/qemu: update arm-vexpress instructions for SMP

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We can use the vexpress arm defconfig to test SMP features in Qemu.
So document the necessary invocation changes to account for this, in
preparation of the arm nuri defconfig removal.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Gustavo Zacarias 2016-02-07 20:39:06 -03:00 committed by Thomas Petazzoni
parent 75b7049281
commit c06ec1e397
1 changed files with 4 additions and 1 deletions
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5
board/qemu/arm-vexpress/readme.txt
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@ -1,8 +1,11 @@
Run the emulation with:
qemu-system-arm -M vexpress-a9 -m 256 -kernel output/images/zImage -dtb output/images/vexpress-v2p-ca9.dtb -drive file=output/images/rootfs.ext2,if=sd,format=raw -append "console=ttyAMA0,115200 root=/dev/mmcblk0" -serial stdio -net nic,model=lan9118 -net user
qemu-system-arm -M vexpress-a9 -smp 1 -m 256 -kernel output/images/zImage -dtb output/images/vexpress-v2p-ca9.dtb -drive file=output/images/rootfs.ext2,if=sd,format=raw -append "console=ttyAMA0,115200 root=/dev/mmcblk0" -serial stdio -net nic,model=lan9118 -net user
The login prompt will appear in the terminal that started Qemu. The
graphical window is the framebuffer.
If you want to emulate more cores change "-smp 1" to "-smp 2" for
dual-core or even "smp -4" for a quad-core configuration.
Tested with QEMU 2.3.0