I suppose the uboot.bin files you are talking about are binaries that had been converted with objcopy or similar from ELF to binary. That probably works well. The Zynq boot.bin is a container file that contains the Zynq bootloader and (optionally) other things (like U-Boot). I doubt QEMU is able to parse this Zynq specific file (though, it's all documented, so it could be implemented I guess). So, you probably want to pass the u-boot.elf as kernel, but I don't know to what extend that works currently. For that we need input from Peter. For more information about the Zynq boot.bin format, please have a look at section 6.3.2 in the Zynq TRM (http://www.xilinx.com/support/documentation/user_guides/ug585-Zynq-7000-TRM....) and the Zynq SW developer guide (http://www.xilinx.com/support/documentation/user_guides/ug821-zynq-7000-swde...).
Sören
On Mon, 2014-11-24 at 10:24AM -0800, Douglas Rupp wrote:
For versatilepb arm, there's a blog post that describes a recipe of how to build and boot "uboot.bin" in qemu. It works fine, here's the link if you're interested. https://balau82.wordpress.com/2010/03/10/u-boot-for-arm-on-qemu/
I assumed that uboot was standardized enough so that it would work the same for other machine/board emulations. I'd like to understand why it's not working.
The problem I'm trying to solve is to configure networking in uboot for the xilinx-zynq-a9 bsp for vxworks7 running under qemu. Vxworks7 uses uboot where 6.9 didn't, and the default device tree isn't set correctly for my network, it just has some random defaults that are expected to be customized. The alternative is to use real hardware, which should work well enough for debugging but in general it's much easier to debug and run tests in qemu especially when working remotely.
So any ideas you might have on what's special about zynq utboot would be appreciated.
On Mon, Nov 24, 2014 at 9:45 AM, Sören Brinkmann <soren.brinkmann@xilinx.com
wrote:
I don't think boot.bin is a legal "kernel". IIRC, I had issues running on QEMU, but it was slightly better than what you describe.
SörenOn Mon, 2014-11-24 at 09:40AM -0800, Douglas Rupp wrote:
The result is:
arm-softmmu/qemu-system-arm -M arm-generic-fdt -nographic -smp 2
-machine
linux=on -serial mon:stdio -dtb devicetree.dtb -kernel boot.bin SPI device 0x7f8161521ee0 qemu: fatal: Trying to execute code outside RAM or ROM at 0xfffffff0
then a register dump
The "boot.bin" and "devicetree.dtb" is from xilinx binary release 2014.3-release/zed
I tried removing -smp 2 -machine linux=on, and same error. On Mon, Nov 24, 2014 at 9:21 AM, Sören Brinkmann <[1]soren.brinkmann@xilinx.com> wrote:
Could you try whether these instructions work? [2]http://www.wiki.xilinx.com/QEMU Sören On Mon, 2014-11-24 at 08:58AM -0800, Douglas Rupp wrote: > I built qemu-system-arm from the xilinx-master branch. xilinx-zynq-a9 is > not a supported machine. :( > > On Mon, Nov 24, 2014 at 7:02 AM, Douglas Rupp <[3]douglas.b.rupp@gmail.com> > wrote: > > > It's the version of qemu-system-arm downloaded for Ubuntu 14.04 > > Version info: > > qemu-system-arm --version > > QEMU emulator version 2.0.0 (Debian 2.0.0+dfsg-2ubuntu1.7) > > > > I also tried the three "boot.bin" files in"2014.3-release.tar.gz"
> > downloaded from the Xilinx website, those in subdirectories zc70x/zc706/ > > and zc70x/zc702/, and zed/ . Same command line. Hangs with no output. > > > > I also tried the version 2.0.0 version of qemu-system-arm fromthe
> > [4]open-do.org website that we regular use with xlnx-zynq-a9bsp for
> > vxworks7, it boots vxworks without uboot, but hangs with uboot. > > > > You're suggesting that only the qemu-system-arm built from the xilinx repo > > is functional with uboot? I used that version of qemu about ayear
ago, > > and it worked fine for Linux but it was an ancient version ofqemu
(at that > > time). > > > > On Sun, Nov 23, 2014 at 10:17 PM, Jagan Teki <[5]jagannadh.teki@gmail.com> > > wrote: > > > >> On 24 November 2014 at 06:03, Douglas Rupp <[6]douglas.b.rupp@gmail.com> > >> wrote: > >> > I'm brand new to Uboot, so hopefully this is just somemissing
switch. > >> I > >> > did search the archive, and I was able to build and u-boot a > >> versaatilepb > >> > version, but xilinx-zynq-a9 is the one I really need. > >> > > >> > u-boot-2014.10$ make zynq_zed_defconfig > >> > u-boot-2014.10$ make all CROSS_COMPILE=arm-none-eabi-ARCH=arm
> >> > u-boot-2014.10$ qemu-system-arm -M xilinx-zynq-a9 -m 1024M -nographic > >> > -kernel u-boot-dtb.bin > >> > Segmentation fault (core dumped) > >> > >> I guess it may be qemu usage issue, is qemu from > >> [7]https://github.com/Xilinx/qemu ? > >> > >> + Peter > >> Hope, he will give some inputs > >> > >> > > >> > What am I doing wrong? > >> > >> thanks! > >> -- > >> Jagan. > >> > > > > > _______________________________________________ > U-Boot mailing list > [8]U-Boot@lists.denx.de > [9]http://lists.denx.de/mailman/listinfo/u-bootLinks:
- mailto:soren.brinkmann@xilinx.com/
- http://www.wiki.xilinx.com/QEMU
- mailto:douglas.b.rupp@gmail.com/
- http://open-do.org/
- mailto:jagannadh.teki@gmail.com/
- mailto:douglas.b.rupp@gmail.com/
- https://github.com/Xilinx/qemu
- mailto:U-Boot@lists.denx.de/
- http://lists.denx.de/mailman/listinfo/u-boot
U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot