[libmetal] metal_ion_shm_provider_init: failed to open ion dev file

[sitting]

Hi,

I followed ug1186 to implement libmetal baremetal firmware and libmetal linux application. Unfortunately, there was a ion dev error and got stuck in share memory demo. How can I fix it?

Here is my libmetal device tree

/{
	reserved-memory {
	#address-cells = <2>;
	#size-cells = <2>;
	ranges;
		rproc_0_reserved: rproc@3ed000000 {
		 no-map;
		 reg = <0x0 0x3ed00000 0x0 0x4000000>;
		 };
	};
	amba {
		/* Shared memory */
		shm0: shm@0 {
			compatible = "shm_uio";
			reg = <0x0 0x3ef00000 0x0 0x1000000>;
		};
		shm1: shm@1 {
            		compatible = "shm_uio";
            		reg = <0x0 0x3ff00000 0x0 0x1000000>;
        	};
		/* IPI device */
		ipi_amp0: ipi@ff340000 {
			compatible = "ipi_uio";
			reg = <0x0 0xff340000 0x0 0x1000>;
			interrupt-parent = <&gic>;
			interrupts = <0 29 4>;
		};
		/* IPI device */
		ipi_amp1: ipi@ff350000 {
			compatible = "ipi_uio";
			reg = <0x0 0xff350000 0x0 0x1000>;
			interrupt-parent = <&gic>;
			interrupts = <0 30 4>;
		};
		zynqmp-rpu {
			compatible = "xlnx,zynqmp-r5-remoteproc-1.0";
			#address-cells = <2>;
			#size-cells = <2>;
			ranges;
			core_conf = "split";
			
			r5_0: r5@0 {
				#address-cells = <2>;
				#size-cells = <2>;
				ranges;
				pnode-id = <0x7>;
								
				tcm_0_a: tcm_0@0 {
					reg = <0x0 0xFFE00000 0x0 0x10000>;
					pnode-id = <0xf>;
				};
				tcm_0_b: tcm_0@1 {
					reg = <0x0 0xFFE20000 0x0 0x10000>;
					pnode-id = <0x10>;
				};
			};
			r5_1: r5@1 {
				#address-cells = <2>;
				#size-cells = <2>;
				ranges;
				pnode-id = <0x8>;
				tcm_1_a: tcm_0@0 {
					reg = <0x0 0xFFE90000 0x0 0x10000>;
					pnode-id = <0x11>;
				};
				tcm_1_b: tcm_0@1 {
					reg = <0x0 0xFFEB0000 0x0 0x10000>;
					pnode-id = <0x12>;
				};
			};

		};
	};
};
&ttc0 {
	compatible = "ttc0";
	status = "okay";
};
&ttc1 {
	compatible = "ttc1";
	status = "okay";
};

Thanks,

Sitting

[sitting · Accepted solution]

After I set ion releated configurations in kernel, share memory demo worked well.

Thanks,

Sitting