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Contributor
Contributor
149 Views
Registered: ‎04-18-2017

Unhandled fault: external abort on non-line fetch (0x818) at 0xb6f4b010

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Hi,

As part of our exploration of the capabilities of Zynq, we are trying to configure the IPs  using UIO method. Depending on the entries, we had created in system_user.dtsi, there are entries in /sys/class/uio and /dev/uio folder locations and we can access those.  The entry for PL.dtsi is listed below

video_path_framebuffer_new_v_mix_0: v_mix@43c70000 {
compatible = "xlnx,v-mix-3.0";
interrupt-names = "interrupt";
interrupt-parent = <&intc>;
interrupts = <0 29 4>;
reg = <0x43c70000 0x10000>;
xlnx,s-axi-ctrl-addr-width = <0xc>;
xlnx,s-axi-ctrl-data-width = <0x20>;
};

In system_user.dtsi, the entry is

/include/ "system-conf.dtsi"
/ {
video_path_axis_switch_0 {
compatible = "generic-uio";
reg = <0x43c10000 0x10000>;
};
video_path_hdmi_out_vtg{
compatible = "generic-uio";
reg = <0x43c50000 0x10000>;
};
video_path_sensor0_axi_vdma_0{
compatible = "generic-uio";
reg = <0x43000000 0x10000>;
};
video_path_framebuffer_new_v_mix_0{
compatible = "generic-uio";
reg = <0x43c70000 0x10000>;
};
};

This video_path_framebuffer_new_v_mix_0 entry cannot be accessed from devmem as well /dev/uio and throws an error saying Unhandled fault: external abort on non-line fetcg (0x818) at 0xb6f4b010.

  1. What causes this error?
  2. What is the significance of these numbers?
  3. How can this be fixed?
  4. Running cat /proc/interrupts doesn't show up any entries also. Why so?
  5. We had checked the clock soure in pcw.dtsi and there is an entry for clkc as shown below

&clkc {
fclk-enable = <0xf>;
ps-clk-frequency = <33333333>;
};

We have attached a screenshpt of the error also.

BUSERROR.png

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1 Solution

Accepted Solutions
Contributor
Contributor
76 Views
Registered: ‎04-18-2017

Re: Unhandled fault: external abort on non-line fetch (0x818) at 0xb6f4b010

Jump to solution

Solved and now it works without any issues in a new project.

Hope the project files were corrupted.

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1 Reply
Contributor
Contributor
77 Views
Registered: ‎04-18-2017

Re: Unhandled fault: external abort on non-line fetch (0x818) at 0xb6f4b010

Jump to solution

Solved and now it works without any issues in a new project.

Hope the project files were corrupted.

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