[U-Boot] Ethernet via USB on Sinlinx SinA33

[Quentin Schulz <quentin.schulz@free-electrons.com>]

Hi,

On 06/04/2016 17:24, Hans de Goede wrote:
> Hi,
> 
> On 29-03-16 08:38, Quentin Schulz wrote:
>> Hi,
>>
>> On 28/03/2016 14:56, Hans de Goede wrote:
>>> Hi,
>>>
>>> On 25-03-16 18:14, Quentin Schulz wrote:
>>>> Hi,
>>>>
>>>> I am trying to get Ethernet to work through the USB port of the Sinlinx
>>>> SinA33 on U-Boot to use TFTP to get the kernel and dtb files.
>>>>
>>>> However, I am getting 'data abort' when using dhcp or tftp after
>>>> adding:
>>>> #define CONFIG_USB_HOST_ETHER
>>>> #define CONFIG_USB_ETHER_ASIX
>>>>
>>>> to include/configs/sunxi-common.h and checking CONFIG_USB_EHCI_HCD as
>>>> told in the documentation [1]
>>>>
>>>> I tested this configuration with the C.H.I.P. and it is working well.
>>>
>>> Are you perhaps building u-boot with gcc6 ? There are some known issues
>>> when building u-boot with gcc-6, which look pretty much like this.
>>
>> No, I'm building with gcc-5:
>> $ arm-linux-gnueabihf-gcc --version
>> arm-linux-gnueabihf-gcc (Ubuntu 5.2.1-22ubuntu1) 5.2.1 20151010
>>
>>> Is the ethernet adapter connected to a regular usb host port, or to
>>> the otg port ?
>>
>> The Ethernet adapter is connected to the regular USB host port.
> 
> So I've been debugging some armv7 cache issues lately and I've come
> up with the following fix:
> 
> https://patchwork.ozlabs.org/patch/605967/
> 
> This might very will fix your issue too. If not we're likely missing
> some cache flushing / invalidation in the usb driver for your usb
> host controller.
> 
> Regards,
> 
> Hans

I actually tried uboot-sunxi repository (and then checked out on merge
commit in master for this repository) and it is working as expected: I
get Ethernet over USB.

I tested with master (43d3fb5c0609a76409e7859a2a5800670c7b5bd2) and I
first get a reset of the board when starting USB (before I can enter
U-Boot command line) and then after the reboot, U-Boot hangs on starting
USB (still before the command line).

I did a git bisect on master and it returned this commit:
http://git.denx.de/?p=u-boot.git;a=commit;h=3f9f8a5b83f8aec40c9f4ee496046a695e333c45

Tell me if I can help in any way.

Regards,

Quentin

>>
>> Regards,
>>
>> Quentin
>>
>>
>>>> Steps to reproduce:
>>>>
>>>> 1) Add the following lines to include/configs/sunxi-common.h:
>>>>
>>>> #define CONFIG_USB_HOST_ETHER
>>>> #define CONFIG_USB_ETHER_ASIX
>>>>
>>>> 2) make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
>>>> Sinlinx_SinA33_defconfig
>>>> 3) make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig
>>>> 4) Check CONFIG_USB_EHCI_HC and save configuration
>>>> 5) make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j$(nproc)
>>>> 6) Prepare SDCard:
>>>> sudo dd if=u-boot-sunxi-with-spl.bin of=/dev/sdX bs=1024 seek=8
>>>> 7) Boot the board and run dhcp or tftp
>>>> 8) Get 'data abort' and board gets reset (ethact is also not defined)
>>>>
>>>> The log file is attached.
>>>>
>>>> Thank you,
>>>>
>>>> Quentin
>>>>
>>>> [1] https://github.com/lentinj/u-boot/blob/master/doc/README.usb#L132
>>>>