You can output both formats, however you can not boot a .tar.gz. There is no
mechanism in place to do that. (tar.gz is not a filesystem, it is a collection
of files in an archive, you need an actual filesystem in order to boot.)
cpio.gz should work, BUT the Yocto Project workflow configuration for qemu with
AMD/Xilinx parts does not support direct booting of a cpio.gz (ramdisk image).
That ramdisk still needs to be placed onto a (virtual) sd-card image with
bootgen creating a boot bin file.
If you use PetaLinux, there are additional booting methods that may be available
to you. But again, tar.gz is not one of them.
--Mark
On 2/14/23 1:07 AM, [email protected] wrote:
Hi,
I successfully boot a zcu-104 image according to
https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/821854264/Launching+QEMU+Using+Xilinx+Yocto+toolchains
by runqemu.
By default, runqemu loads the sd-image. And I want to load the *tar.gz
format image instead of sd-image :
ls leimh@ubinux:~/xilinx-test/build$ ls tmp/deploy/images/zcu104-zynqmp/
......
petalinux-image-minimal-zcu104-zynqmp-20230214035633.rootfs.tar.gz *
I want to load this format
petalinux-image-minimal-zcu104-zynqmp-20230214035633.rootfs.wic.qemu-sd *
By default this sd-image that runqemu load
......
If *.tar.gz image format is supported by runqemu, How canI do? Can I change
it by just editing
meta-xilinx/meta-xilinx-core/conf/machine/zynqmp-generic.conf?
...
# Default SD image build onfiguration, use qemu-sd to pad
IMAGE_CLASSES += "image-types-xilinx-qemu"
# Add wic.qemu-sd only if initramfs_image not set due to circular dependecies
IMAGE_FSTYPES += "${@'wic.qemu-sd' if (d.getVar('INITRAMFS_IMAGE') or '') == ''
else 'cpio.gz.u-boot'}"
WKS_FILES ?= "sdimage-bootpart.wks"
...
Best regards
Lei
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