Overo emulation in qemu

Ash Charles has been working with Riku from the Qemu-linaro team to get support for the Overo hardware working in Qemu!

Pre-Compiled Images

Here are Ash's steps for working with pre-compiled images:

• binary executable for qemu available here (for x86_64):

http://dl.dropbox.com/u/211887/qemu-system-arm

MD5:c375b7d0338e3e8cd7009e69f3aaae74

• overo angstrom image with a kernel, MLO, u-boot packed:

http://dl.dropbox.com/u/211887/overo.img.gz

MD5:3545dbd2e7ffac3d352a7bc9e92373bf

• download, gunzip the overo.img.gz and run with:

# ./qemu-system-arm -M overo -m 256 -sd ./overo.img -clock unix -serial stdio

(mouse & keyboard don't work currently but the console session is usable)

From Sources

• build your overo image using bitbake/OE as usual:

$ cd $OVEROTOP

$ bitbake omap3-console-image

• build the MLO program:

$ bitbake x-load

• get the sources for and build qemu with overo support:

$ cd $OVEROTOP

$ git clone git://git.linaro.org/qemu/qemu-linaro.git

$ cd qemu

$ ./configure --prefix=$OVEROTOP/local --target-list=arm-softmmu

$ make install

$ export PATH=$OVEROTOP/local/bin:$PATH

• there are numerous ways to generate the qemu image file:

# export OEDONE=$OETMP/deploy/glibc/images/overo

• • Ash Charles wrote a script specifically for generating Overo qemu images:

# assemble-image.sh $OVEROTOP/overo.img $OEDONE/MLO-overo $OEDONE/u-boot-overo.bin $OEDONE/uImage-overo.bin $OEDONE/omap3-console-image-overo.tar.bz2

• • or using a more general-purpose script for generating qemu images which includes support for Overo:

# mkqemuimg.sh --partpercents 5 --format ",mkfs.ext3" --bootarm "$OEDONE/MLO-overo,$OEDONE/u-boot-overo.bin,$OEDONE/uImage-overo.bin" 1073741824 $OVEROTOP/overo.img ",$OEDONE/omap3-console-image-overo.tar.bz2"

• then run the image under qemu:

<code># qemu-system-arm -M overo -m 256 -sd $OVEROTOP/overo.img -clock unix -serial stdio -net user -device usb-kbd -device usb-mouse