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Linux Boot Crashes on MicroZed

Former Member

When I use the uImage and uramdisk.image.gz provide from "MicroZed Linux microSD Card Image Archive" I can boot. But if I clone from the Xilinx git repo and build:
...
make ARCH=arm CROSS_COMPILE=arm-xilinx-linux-gnueabi- xilinx_zynq_defconfig

make ARCH=arm CROSS_COMPILE=arm-xilinx-linux-gnueabi- UIMAGE_LOADADDR=0x8000 uImage
...
Whether I use the dts generated from SDK or the one provided (not much difference) I get:

...
smp_twd: clock not found -2
ERROR: timer input clock not found
------------[ cut here ]------------
Kernel BUG at c0570b6c [verbose debug info unavailable]
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.10.0-xilinx-15024-gefc2750 #1
task: c058f408 ti: c0584000 task.ti: c0584000
PC is at ttc_timer_init+0x4c/0x38c
LR is at ttc_timer_init+0x4c/0x38c
pc : [<c0570b6c>]    lr : [<c0570b6c>]    psr: 200001d3
sp : c0585f78  ip : 00000000  fp : 00000000
r10: 0000002b  r9 : 413fc090  r8 : c0df5afc
r7 : c057aad0  r6 : f0004000  r5 : c0585fac  r4 : fffffffe
r3 : 600001d3  r2 : 00000001  r1 : 600001d3  r0 : 00000022
Flags: nzCv  IRQs off  FIQs off  Mode SVC_32  ISA ARM  Segment kernel
Control: 18c5387d  Table: 0000404a  DAC: 00000015
Process swapper/0 (pid: 0, stack limit = 0xc0584238)
Stack: (0xc0585f78 to 0xc0586000)
5f60:                                                       c0df5afc a00001d3
5f80: 00000001 c0df5afc c0585fac ffffffff c057aad0 c0df6000 413fc090 00000000
5fa0: 00000000 c0570a5c 00000000 c057fc9c 00000001 c0584000 c05c1640 c055bd98
5fc0: 00000000 c05586c4 ffffffff ffffffff c05582e4 00000000 00000000 c057aad0
5fe0: 18c5387d c058c3f4 c057aac8 c05901fc 0000406a 00008074 00000000 00000000
[<c0570b6c>] (ttc_timer_init+0x4c/0x38c) from [<c0570a5c>] (clocksource_of_init+0x20/0x44)
[<c0570a5c>] (clocksource_of_init+0x20/0x44) from [<c055bd98>] (time_init+0x1c/0x30)
[<c055bd98>] (time_init+0x1c/0x30) from [<c05586c4>] (start_kernel+0x1b8/0x300)
[<c05586c4>] (start_kernel+0x1b8/0x300) from [<00008074>] (0x8074)
Code: e250a000 1a000002 e59f02fc ebf9a890 (e7f001f2)
---[ end trace 1b75b31a2719ed1c ]---
Kernel panic - not syncing: Attempted to kill the idle task!

...
Is there a way to get a patch from the repo by the zed developers?

  • 0

    I'm running into the same issue with the code at the current 'xilinx-v14.7' tag.  If I have some time, I'll try to investigate what is going on.  In the mean time, I reverted back to the 'xilinx-v14.6.02' tag my board boots just fine.

    By the way, I'm using a Xilinx ZC706 dev kit, so I don't think this is specific to the microZed.

  • 0

    That did it! Now I get the PetaLinux boot banner. MicroZed's image doesn't have PetaLinux merged (which I believe was merged post 14.4). How do I bypass the uname/passwd at the serial com?

  • 0

    I had to do two things to get the 14.7 distribution booting on micro zed.

    First, pull the u-boot.elf out of the tarball and build your own boot.bin in SDK.

    Second, the devicetree in the tarball should boot, but networking won't work and you'll only get 1/2G of RAM.

    Also, the devicetree built from SDK won't work.

    Use the dtc tool found at scripts/dtc/dtc in your kernel directory to decompile the 14.7 devicetree and the devicetree supplied by avnet for micro zed.

    Diff'em.

    The networking problem has to do with the PHY interface.  Start with the 14.7 devicetree and replace the ethernet PHY piece with the one from the avnet device tree.  Look for "mdio{...}".  Update the phandle from 0x2 to 0x4 in two places.

    To get 1G of memory find the memory@0 section and replace 0x20000000 with 0x40000000.

  • 0

    Previous fix leads to kernal panic after a few hours.

    Below is the entire ethernet description that seems to work fine.

    ttps7-ethernet@e000b000 {
    ttt#address-cells = <0x1>;
    ttt#size-cells = <0x0>;
    tttcompatible = "xlnx,ps7-ethernet-1.00.a";
    tttinterrupt-parent = <0x2>;
    tttinterrupts = <0x0 0x16 0x4>;
    tttlocal-mac-address = [00 0a 35 00 00 00];
    tttphy-handle = <0x4>;
    tttphy-mode = "rgmii-id";
    tttreg = <0xe000b000 0x1000>;
                            xlnx,enet-clk-freq-hz = <0x7735940>;
    tttxlnx,enet-reset = <0xffffffff>;
    tttxlnx,enet-slcr-1000mbps-div0 = <0x8>;
    tttxlnx,enet-slcr-1000mbps-div1 = <0x1>;
    tttxlnx,enet-slcr-100mbps-div0 = <0x8>;
    tttxlnx,enet-slcr-100mbps-div1 = <0x5>;
    tttxlnx,enet-slcr-10mbps-div0 = <0x8>;
    tttxlnx,enet-slcr-10mbps-div1 = <0x32>;
    tttclock-names = "ref_clk", "aper_clk";
    tttclocks = <0x3 0xd 0x3 0x1e>;
    tttxlnx,eth-mode = <0x1>;
    tttxlnx,has-mdio = <0x1>;
    tttxlnx,ptp-enet-clock = <0x69f6bcb>;
    tttmdio {
    tttt#address-cells = <0x1>;
    tttt#size-cells = <0x0>;

    ttttphy@0 {
    tttttcompatible = "marvell,88e1510";
    tttttdevice_type = "ethernet-phy";
    tttttreg = <0x0>;
    tttttmarvell,reg-init = <0x3 0x10 0xff00 0x1e 0x3 0x11 0xfff0 0xa>;
    tttttlinux,phandle = <0x4>;
    tttttphandle = <0x4>;
    tttt};
    ttt};

    tt};