Hi Philippe,

On Tue, Dec 10, 2019 at 9:26 AM Philippe Mathieu-Daudé <philmd@redhat.com> wrote:

On 12/9/19 10:37 PM, Niek Linnenbank wrote:
> Hi Philippe,
>
> On Tue, Dec 3, 2019 at 9:47 AM Philippe Mathieu-Daudé <philmd@redhat.com
> <mailto:philmd@redhat.com>> wrote:
>
>     On 12/2/19 10:09 PM, Niek Linnenbank wrote:
>      > Dear QEMU developers,
>      >
>      > Hereby I would like to contribute the following set of patches to
>     QEMU
>      > which add support for the Allwinner H3 System on Chip and the
>      > Orange Pi PC machine. The following features and devices are
>     supported:
>      >
>      >   * SMP (Quad Core Cortex A7)
>      >   * Generic Interrupt Controller configuration
>      >   * SRAM mappings
>      >   * Timer device (re-used from Allwinner A10)
>      >   * UART
>      >   * SD/MMC storage controller
>      >   * EMAC ethernet connectivity
>      >   * USB 2.0 interfaces
>      >   * Clock Control Unit
>      >   * System Control module
>      >   * Security Identifier device
>
>     Awesome!
>
>      > Functionality related to graphical output such as HDMI, GPU,
>      > Display Engine and audio are not included. Recently released
>      > mainline Linux kernels (4.19 up to latest master) and mainline U-Boot
>      > are known to work. The SD/MMC code is tested using bonnie++ and
>      > various tools such as fsck, dd and fdisk. The EMAC is verified
>     with iperf3
>      > using -netdev socket.
>      >
>      > To build a Linux mainline kernel that can be booted by the Orange
>     Pi PC
>      > machine, simply configure the kernel using the sunxi_defconfig
>     configuration:
>      >   $ ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- make mrproper
>      >   $ ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- make sunxi_defconfig
>      >
>      > To be able to use USB storage, you need to manually enable the
>     corresponding
>      > configuration item. Start the kconfig configuration tool:
>      >   $ ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- make menuconfig
>      >
>      > Navigate to the following item, enable it and save your
>     configuration:
>      >   Device Drivers > USB support > USB Mass Storage support
>      >
>      > Build the Linux kernel with:
>      >   $ ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- make -j5
>      >
>      > To boot the newly build linux kernel in QEMU with the Orange Pi
>     PC machine, use:
>      >   $ qemu-system-arm -M orangepi -m 512 -nic user -nographic \
>      >       -kernel /path/to/linux/arch/arm/boot/zImage \
>      >       -append 'console=ttyS0,115200' \
>      >       -dtb /path/to/linux/arch/arm/boot/dts/sun8i-h3-orangepi-pc.dtb
>      >
>      > Note that this kernel does not have a root filesystem. You may
>     provide it
>      > with an official Orange Pi PC image [1] either as an SD card or as
>      > USB mass storage. To boot using the Orange Pi PC Debian image on
>     SD card,
>      > simply add the -sd argument and provide the proper root= kernel
>     parameter:
>      >   $ qemu-system-arm -M orangepi -m 512 -nic user -nographic \
>      >       -kernel /path/to/linux/arch/arm/boot/zImage \
>      >       -append 'console=ttyS0,115200 root=/dev/mmcblk0p2' \
>      >       -dtb
>     /path/to/linux/arch/arm/boot/dts/sun8i-h3-orangepi-pc.dtb \
>      >       -sd OrangePi_pc_debian_stretch_server_linux5.3.5_v1.0.img
>      >
>      > Alternatively, you can also choose to build and boot a recent
>     buildroot [2]
>      > using the orangepi_pc_defconfig or Armbian image [3] for Orange
>     Pi PC.
>
>     Richard, trying the Armbian image from
>     https://apt.armbian.com/pool/main/l/linux-4.20.7-sunxi/ I get:
>
>     $ arm-softmmu/qemu-system-arm -M orangepi -m 512 -nic user \
>         -append 'console=ttyS0,115200' \
>         -kernel boot/vmlinuz-4.20.7-sunxi \
>         -dtb usr/lib/linux-image-dev-sunxi/sun8i-h3-orangepi-pc.dtb \
>         -serial stdio -d unimp
>     Uncompressing Linux... done, booting the kernel.
>     rtc: unimplemented device write (size 4, value 0x16aa0001, offset 0x0)
>     rtc: unimplemented device read (size 4, offset 0x0)
>     rtc: unimplemented device read (size 4, offset 0x0)
>     rtc: unimplemented device read (size 4, offset 0x8)
>     qemu-system-arm: target/arm/helper.c:11359: cpu_get_tb_cpu_state:
>     Assertion `flags == rebuild_hflags_internal(env)' failed.
>     Aborted (core dumped)
>
>
> I'm trying to reproduce the error you reported here with my patch set on
> latest master,
> but so far without any result. The host OS I'm using is Ubuntu 18.04.3
> LTS on x86_64.
> I ran several times using the same 4.20.7-sunxi kernel and same command
> line.
>
> Some questions that might help:
> 1) Are there any specific steps you did in order to produce this error?

I build QEMU with:

./configure --enable-trace-backends=log --extra-cflags=-ggdb --enable-debug

> 2) Could this be a known / existing issue?
> 3) How many times did you see this error?

Always

> 4) Are you also using Ubuntu 18.04.3 LTS on x86_64, or a different host OS?

Host is Fedora 30.

OK thanks, I will try again using the info above after I finished reworking the other patch comments.

Niek

 

>
> Regards,
> Niek

--

Niek Linnenbank