scripts: add sgl-telemetry-collect for EDAC and system data

[mrpollo]

Adds a portable shell script that collects system telemetry from SGL deployments, focused on EDAC (Error Detection and Correction) data and hardware error events. The goal is to enable teams running SGL in space or radiation environments to share anonymizable telemetry for aggregate analysis — similar to logs.px4.io but for space-grade Linux.

• Collects kernel version, architecture, uptime, CPU/memory info
• Reads EDAC memory controller data from sysfs (correctable/uncorrectable error counts per MC and DIMM)
• Extracts EDAC/MCE/hardware error lines from dmesg
• Copies rasdaemon SQLite database if available
• Captures board identity (devicetree model, DMI) and SGL distro version
• Outputs a JSON report + tarball ready for upload
• Pure POSIX shell, no dependencies beyond coreutils

This is a draft, the upload destination and telemetry platform are TBD. Filed as a starting point for discussion at the SGL SIG.

Sample output:

Report: /tmp/sgl-telemetry/20260402T161902Z/report.json
{
  "schema_version": "1.0",
  "collected_at": "20260402T161902Z",
  "system": {
    "kernel_version": "6.6.111-yocto-standard",
    "arch": "aarch64",
    "hostname": "qemuarm64",
    "uptime_seconds": 233.57,
    "cpu_count": 1,
    "mem_total_kb": 425392
  },
  "platform": {
    "board_model": "linux,dummy-virt"
  },
  "edac": {
    "memory_controllers": [],
    "dmesg_ce_count": 0,
    "dmesg_ue_count": 0,
    "dmesg_mce_count": 0
  }
}

[robwoolley]

This is a great idea to start the discussion. May I suggest we formally mark it as a draft so we know it is open for discussion?

[mrpollo]

Thanks @robwoolley I was testing things out in QEMU during the call, but I'm obviously guessing with the EDAC stuff, would be nice to get someone to test this on actual hardware. Maybe a BeagleV fire? ;)

[robwoolley]

That sounds like a great thing to explore. I see that there is a CoreEDAC IP block that can be loaded onto the FPGA: https://www.microchip.com/en-us/products/fpgas-and-plds/ip-core-tools/coreedac

However, I don't see a software interface mentioned in the CoreEDAC user guide or a corresponding EDAC driver for the Linux kernel: https://github.com/linux4microchip/linux/tree/linux-6.12-mchp/drivers/edac

I suggest we reach out to Microchip to ask about investigating this further on the BeagleV-Fire and other PolarFire SoC boards.