Ethernet of ZYBO seems does not work

[Jimmy.L]

Hey guys!

I followed the ''Embedded Linux hands-on tutorial'' to build and run Linux on my ZYBO board. I am trying to use the Ethernet but it seems does not work correctly. Here are some informations:

zynq> dmesg | grep xemacps
xemacps e000b000.ps7-ethernet: pdev->id -1, baseaddr 0xe000b000, irq 54
zynq> ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1E:C0:DD:A6:1A  
          inet addr:192.168.1.10  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B )TX bytes:0 (0.0 B )
          Interrupt:54 Base address:0xb000

I connect the board and my PC (ip adr: 169.254.29.208). When I ping ZYBO from my PC I got "Destination host unreachable" and "request timed out". When I ping PC from ZYBO I got "sendto: Network is unreachable".

zynq> xemacps e000b000.ps7-ethernet: Set clk to 125000000 Hz
xemacps e000b000.ps7-ethernet: link up (1000/FULL)
xemacps e000b000.ps7-ethernet: link down
xemacps e000b000.ps7-ethernet: link up (1000/FULL)
random: nonblocking pool is initialized

zynq> ping 169.254.29.208
PING 169.254.29.208 (169.254.29.208): 56 data bytes
ping: sendto: Network is unreachable

zynq> ping 192.168.1.10
PING 192.168.1.10 (192.168.1.10): 56 data bytes

^C
--- 192.168.1.10 ping statistics ---
282 packets transmitted, 0 packets received, 100% packet loss

I'm using Vivado 2014.2 under Ubuntu 14.04 and didn't do any changes in addition to the tutorial.

So anyone can help me with this? Thanks a lot!

 

Best regards,

JImmy

[Jimmy.L]

I just worked this thing out. The reason is so stupid but really small enough to be ignored.

If you are using Windows as a host system, remember to turn off the FIREWALL in Control Panel!!! That's the reason Why I received the packet but cannot give a response.

And also, in the embedded linux I cannot ping myself on zybo, I don't why. So don't ping yourself to check the ethernet, it will NOT work. That's why I didn't consider the firewall on PC at first.

[JColvin]

Hi Jimmy,

I have asked our Applications team about this; they will get back to you here on the forum.

Thanks,
JColvin

[mwingerson]

Hello Jimmy,

what are the output for these commands?

 -   cat /etc/network/interfaces

  -  cat /etc/resolv.conf

  -  route -n

Thanks,

Marshall

[Jimmy.L]

Big thanks to Marschall and JColvin for your replies.

zynq> cat /etc/network/interfaces
cat: can't open '/etc/network/interfaces': No such file or directory
zynq> cat /etc/resolv.conf
cat: can't open '/etc/resolv.conf': No such file or directory
zynq> route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     0.0.0.0         255.255.255.0   U        0           0        0      eth0
zynq> cd /etc
zynq> ls
dropbear      init.d        inittab.orig  passwd
fstab         inittab       mtab          profile

I checked the the /etc folders and there are only two subfolders, /dropbear and /init.d .

By the way, I changed the ipv4 address of my laptop with 192.168.1.11, and then ZYBO is pingable from my laptop. But I still cannot ping my laptop from ZYBO.

Regards,

Jimmy

 

[Jimmy.L]

I also attached the device tree file in case you guys need it.

/dts-v1/;
/ {
    #address-cells = <1>;
    #size-cells = <1>;
    compatible = "xlnx,zynq-7000";
    model = "Xilinx Zynq";
    aliases {
        ethernet0 = &ps7_ethernet_0;
        serial0 = &ps7_uart_1;
        spi0 = &ps7_qspi_0;
    } ;
    chosen {
        bootargs = "console=ttyPS0,115200 root=/dev/ram rw earlyprintk
        rootfstype = ext4 rootwait devtmpfs.mount=1";
        linux,stdout-path = "/amba@0/serial@e0001000";
    } ;
    cpus {
        #address-cells = <1>;
        #size-cells = <0>;
        ps7_cortexa9_0: cpu@0 {
            bus-handle = <&ps7_axi_interconnect_0>;
            clock-latency = <1000>;
            clocks = <&clkc 3>;
            compatible = "arm,cortex-a9";
            device_type = "cpu";
            interrupt-handle = <&ps7_scugic_0>;
            operating-points = <666667 1000000 333334 1000000 222223 1000000>;
            reg = <0x0>;
        } ;
        ps7_cortexa9_1: cpu@1 {
            bus-handle = <&ps7_axi_interconnect_0>;
            clocks = <&clkc 3>;
            compatible = "arm,cortex-a9";
            device_type = "cpu";
            interrupt-handle = <&ps7_scugic_0>;
            reg = <0x1>;
        } ;
    } ;
    pmu {
        compatible = "arm,cortex-a9-pmu";
        interrupt-parent = <&ps7_scugic_0>;
        interrupts = <0 5 4>, <0 6 4>;
        reg = <0xf8891000 0x1000>, <0xf8893000 0x1000>;
        reg-names = "cpu0", "cpu1";
    } ;
    ps7_ddr_0: memory@0 {
        device_type = "memory";
        reg = <0x0 0x20000000>;
    } ;
    ps7_axi_interconnect_0: amba@0 {
        #address-cells = <1>;
        #size-cells = <1>;
        compatible = "xlnx,ps7-axi-interconnect-1.00.a", "simple-bus";
        ranges ;
        ps7_afi_0: ps7-afi@f8008000 {
            compatible = "xlnx,ps7-afi-1.00.a";
            reg = <0xf8008000 0x1000>;
        } ;
        ps7_afi_1: ps7-afi@f8009000 {
            compatible = "xlnx,ps7-afi-1.00.a";
            reg = <0xf8009000 0x1000>;
        } ;
        ps7_afi_2: ps7-afi@f800a000 {
            compatible = "xlnx,ps7-afi-1.00.a";
            reg = <0xf800a000 0x1000>;
        } ;
        ps7_afi_3: ps7-afi@f800b000 {
            compatible = "xlnx,ps7-afi-1.00.a";
            reg = <0xf800b000 0x1000>;
        } ;
        ps7_ddrc_0: ps7-ddrc@f8006000 {
            compatible = "xlnx,zynq-ddrc-1.0";
            reg = <0xf8006000 0x1000>;
            xlnx,has-ecc = <0x0>;
        } ;
        ps7_dev_cfg_0: ps7-dev-cfg@f8007000 {
            clock-names = "ref_clk", "fclk0", "fclk1", "fclk2", "fclk3";
            clocks = <&clkc 12>, <&clkc 15>, <&clkc 16>, <&clkc 17>, <&clkc 18>;
            compatible = "xlnx,zynq-devcfg-1.0";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 8 4>;
            reg = <0xf8007000 0x100>;
        } ;
        ps7_dma_s: ps7-dma@f8003000 {
            #dma-cells = <1>;
            #dma-channels = <8>;
            #dma-requests = <4>;
            clock-names = "apb_pclk";
            clocks = <&clkc 27>;
            compatible = "arm,primecell", "arm,pl330";
            interrupt-names = "abort", "dma0", "dma1", "dma2", "dma3",
                "dma4", "dma5", "dma6", "dma7";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 13 4>, <0 14 4>, <0 15 4>, <0 16 4>, <0 17 4>, <0 40 4>, <0 41 4>, <0 42 4>, <0 43 4>;
            reg = <0xf8003000 0x1000>;
        } ;
        ps7_ethernet_0: ps7-ethernet@e000b000 {
            #address-cells = <1>;
            #size-cells = <0>;
            clock-names = "ref_clk", "aper_clk";
            clocks = <&clkc 13>, <&clkc 30>;
            compatible = "xlnx,ps7-ethernet-1.00.a";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 22 4>;
            phy-handle = <&phy0>;
            phy-mode = "rgmii-id";
            reg = <0xe000b000 0x1000>;
            xlnx,eth-mode = <0x1>;
            xlnx,has-mdio = <0x1>;
            xlnx,ptp-enet-clock = <108333336>;
            mdio {
                #address-cells = <1>;
                #size-cells = <0>;
                phy0: phy@1 {
                    compatible = "realtek,RTL8211E";
                    device_type = "ethernet-phy";
                    reg = <1>;
                } ;
            } ;
        } ;
        ps7_globaltimer_0: ps7-globaltimer@f8f00200 {
            clocks = <&clkc 4>;
            compatible = "arm,cortex-a9-global-timer";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <1 11 0x301>;
            reg = <0xf8f00200 0x100>;
        } ;
        ps7_gpio_0: ps7-gpio@e000a000 {
            #gpio-cells = <2>;
            clocks = <&clkc 42>;
            compatible = "xlnx,zynq-gpio-1.0";
            emio-gpio-width = <64>;
            gpio-controller ;
            gpio-mask-high = <0xc0000>;
            gpio-mask-low = <0xfe81>;
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 20 4>;
            reg = <0xe000a000 0x1000>;
        } ;
        ps7_iop_bus_config_0: ps7-iop-bus-config@e0200000 {
            compatible = "xlnx,ps7-iop-bus-config-1.00.a";
            reg = <0xe0200000 0x1000>;
        } ;
        ps7_ocmc_0: ps7-ocmc@f800c000 {
            compatible = "xlnx,zynq-ocmc-1.0";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 3 4>;
            reg = <0xf800c000 0x1000>;
        } ;
        ps7_pl310_0: ps7-pl310@f8f02000 {
            arm,data-latency = <3 2 2>;
            arm,tag-latency = <2 2 2>;
            cache-level = <2>;
            cache-unified ;
            compatible = "arm,pl310-cache";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 2 4>;
            reg = <0xf8f02000 0x1000>;
        } ;
        ps7_qspi_0: ps7-qspi@e000d000 {
            clock-names = "ref_clk", "pclk";
            clocks = <&clkc 10>, <&clkc 43>;
            compatible = "xlnx,zynq-qspi-1.0";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 19 4>;
            is-dual = <0>;
            num-cs = <1>;
            reg = <0xe000d000 0x1000>;
            xlnx,fb-clk = <0x1>;
            xlnx,qspi-mode = <0x0>;
            #address-cells = <1>;
            #size-cells = <0>;
            flash@0 {
                compatible = "n25q128";
                reg = <0x0>;
                spi-tx-bus-width = <1>;
                spi-rx-bus-width = <4>;
                spi-max-frequency = <50000000>;
                #address-cells = <1>;
                #size-cells = <1>;
                partition@qspi-fsbl-uboot {
                    label = "qspi-fsbl-uboot";
                    reg = <0x0 0x400000>;
                };
                partition@qspi-linux {
                    label = "qspi-linux";
                    reg = <0x400000 0x500000>;
                };
                partition@qspi-device-tree {
                    label = "qspi-device-tree";
                    reg = <0x900000 0x20000>;
                };
                partition@qspi-user {
                    label = "qspi-user";
                    reg = <0x920000 0x6E0000>;
                };
            };

        } ;
        ps7_qspi_linear_0: ps7-qspi-linear@fc000000 {
            clock-names = "ref_clk", "aper_clk";
            clocks = <&clkc 10>, <&clkc 43>;
            compatible = "xlnx,ps7-qspi-linear-1.00.a";
            reg = <0xfc000000 0x1000000>;
        } ;
        ps7_scugic_0: ps7-scugic@f8f01000 {
            #address-cells = <2>;
            #interrupt-cells = <3>;
            #size-cells = <1>;
            compatible = "arm,cortex-a9-gic", "arm,gic";
            interrupt-controller ;
            num_cpus = <2>;
            num_interrupts = <96>;
            reg = <0xf8f01000 0x1000>, <0xf8f00100 0x100>;
        } ;
        ps7_scutimer_0: ps7-scutimer@f8f00600 {
            clocks = <&clkc 4>;
            compatible = "arm,cortex-a9-twd-timer";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <1 13 0x301>;
            reg = <0xf8f00600 0x20>;
        } ;
        ps7_scuwdt_0: ps7-scuwdt@f8f00620 {
            clocks = <&clkc 4>;
            compatible = "xlnx,ps7-scuwdt-1.00.a";
            device_type = "watchdog";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <1 14 0x301>;
            reg = <0xf8f00620 0xe0>;
        } ;
        ps7_sd_0: ps7-sdio@e0100000 {
            clock-frequency = <50000000>;
            clock-names = "clk_xin", "clk_ahb";
            clocks = <&clkc 21>, <&clkc 32>;
            compatible = "arasan,sdhci-8.9a";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 24 4>;
            reg = <0xe0100000 0x1000>;
            xlnx,has-cd = <0x1>;
            xlnx,has-power = <0x0>;
            xlnx,has-wp = <0x1>;
        } ;
        ps7_slcr_0: ps7-slcr@f8000000 {
            #address-cells = <1>;
            #size-cells = <1>;
            compatible = "xlnx,zynq-slcr", "syscon";
            ranges ;
            reg = <0xf8000000 0x1000>;
            clkc: clkc@100 {
                #clock-cells = <1>;
                clock-output-names = "armpll", "ddrpll", "iopll", "cpu_6or4x", "cpu_3or2x",
                    "cpu_2x", "cpu_1x", "ddr2x", "ddr3x", "dci",
                    "lqspi", "smc", "pcap", "gem0", "gem1",
                    "fclk0", "fclk1", "fclk2", "fclk3", "can0",
                    "can1", "sdio0", "sdio1", "uart0", "uart1",
                    "spi0", "spi1", "dma", "usb0_aper", "usb1_aper",
                    "gem0_aper", "gem1_aper", "sdio0_aper", "sdio1_aper", "spi0_aper",
                    "spi1_aper", "can0_aper", "can1_aper", "i2c0_aper", "i2c1_aper",
                    "uart0_aper", "uart1_aper", "gpio_aper", "lqspi_aper", "smc_aper",
                    "swdt", "dbg_trc", "dbg_apb";
                compatible = "xlnx,ps7-clkc";
                fclk-enable = <0xf>;
                ps-clk-frequency = <50000000>;
                reg = <0x100 0x100>;
            } ;
        } ;
        ps7_ttc_0: ps7-ttc@f8001000 {
            clocks = <&clkc 6>;
            compatible = "cdns,ttc";
            interrupt-names = "ttc0", "ttc1", "ttc2";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 10 4>, <0 11 4>, <0 12 4>;
            reg = <0xf8001000 0x1000>;
        } ;
        ps7_uart_1: serial@e0001000 {
            clock-names = "uart_clk", "pclk";
            clocks = <&clkc 24>, <&clkc 41>;
            compatible = "xlnx,xuartps", "cdns,uart-r1p8";
            current-speed = <115200>;
            device_type = "serial";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 50 4>;
            port-number = <0>;
            reg = <0xe0001000 0x1000>;
            xlnx,has-modem = <0x0>;
        } ;
        ps7_usb_0: ps7-usb@e0002000 {
            clocks = <&clkc 28>;
            compatible = "xlnx,ps7-usb-1.00.a", "xlnx,zynq-usb-1.00.a";
            dr_mode = "host";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 21 4>;
            phy_type = "ulpi";
            reg = <0xe0002000 0x1000>;
            xlnx,usb-reset = "MIO 46";
        } ;
        ps7_xadc: ps7-xadc@f8007100 {
            clocks = <&clkc 12>;
            compatible = "xlnx,zynq-xadc-1.00.a";
            interrupt-parent = <&ps7_scugic_0>;
            interrupts = <0 7 4>;
            reg = <0xf8007100 0x20>;
        } ;
    } ;
} ;

I highlighted the line which describes the Ethernet. By the way, I also checked on the Internet and noticed there is another description for Ethernet. I am not both are the same so I put it below.

&gem0 {
    local-mac-address = [00 0a 35 00 00 00];
    phy-mode = "rgmii-id";
    status = "okay";
    phy-handle = <&phy0>;
    xlnx,eth-mode = <0x1>;
    xlnx,has-mdio = <0x1>;
    xlnx,ptp-enet-clock = <0x6750918>;
    ps7_ethernet_0_mdio: mdio {
        #address-cells = <1>;
        #size-cells = <0>;
        
        phy0: phy@1 {
            compatible = "realtek,RTL8211E";
            device_type = "ethernet-phy";
            reg = <1>;
        } ;
    };
};

I think it's same but I am not sure...

[JColvin]

Sweet, I'm glad you got that working out! 

[mwingerson]

I just worked this thing out. The reason is so stupid but really small enough to be ignored.

If you are using Windows as a host system, remember to turn off the FIREWALL in Control Panel!!! That's the reason Why I received the packet but cannot give a response.

And also, in the embedded linux I cannot ping myself on zybo, I don't why. So don't ping yourself to check the ethernet, it will NOT work. That's why I didn't consider the firewall on PC at first.

Glad to hear you figured this out.

What did disabling the firewall exactly do?  Does it allow for the ZYBO to ping the PC?

If that is the case, then I think there is an issue with the security settings in the firewall that is ignoring ping requests.

Disabling the firewall is risky business so hopefully you found that setting and turned it off.

Best of luck!