//! /system/services/fdt — the devicetree discovery service: the ARM twin of the
//! acpi service (docs/discovery.md — firmware neutrality). **Placeholder: not
//! implemented.** It exists so the build's `-Ddiscovery` option has both of its
//! values from day one; the implementation lands with the Raspberry Pi
//! bring-up (docs/arm.md).
//!
//! What it becomes: the per-firmware discoverer for boots that hand over a
//! flattened device tree instead of ACPI tables. It claims the
//! `devicetree-blob` node the kernel publishes (the FDT the loader received),
//! walks the tree — pure data, no bytecode, so unlike the acpi service it
//! needs no port grant and no interpreter — and, like any bus-shaped driver:
//! `device_register`s what it finds (containment against the blob node's
//! recorded apertures), reports each child to the device manager
//! (`child_added`, identity = the node's `compatible` string), and stays
//! resident under the manager's supervision (hello, restart, the usual
//! contract).
//!
//! Known prerequisite recorded in docs/discovery.md: `DeviceDescriptor`'s 8-byte `hid`
//! cannot hold an FDT `compatible` string ("brcm,bcm2835-aux-uart") — identity
//! widens before this file grows a body.

const runtime = @import("runtime");

pub fn main(init: runtime.process.Init) void {
    _ = init;
    // Not implemented: exit cleanly and silently (a bare spawn by the
    // initial-ramdisk sweep must not derange other tests' markers). The
    // supervisor reads a clean exit as "meant to stop" — correct for a
    // placeholder.
}
