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|
(* Boot - Arvo Kernel Boot System
*
* This module handles:
* - Loading pill files (jammed Arvo kernels)
* - Parsing pill structure
* - Initial boot sequence
*
* Pill Structure:
* - A pill is a jammed noun containing the Arvo kernel
* - Format varies, but typically: [kernel-gate initial-state]
* - Or just the kernel-gate itself
*)
(* Boot error *)
type error =
| FileNotFound of string
| InvalidPill of string
| BootFailed of string
(* Pill type *)
type pill = {
kernel: Noun.noun; (* The Arvo kernel gate *)
boot_ova: Noun.noun list; (* Initial events to process *)
}
(* Load pill from file using Eio
*
* Steps:
* 1. Read jammed pill file
* 2. Cue to get kernel noun
* 3. Parse pill structure
*)
let load_pill ~fs pill_path =
try
Printf.printf "[Boot] Loading pill from %s...\n%!" pill_path;
(* Read pill file *)
let file_path = Eio.Path.(fs / pill_path) in
let pill_bytes = Eio.Path.load file_path |> Bytes.of_string in
Printf.printf "[Boot] Pill file: %d bytes\n%!" (Bytes.length pill_bytes);
(* Cue the pill to get kernel noun *)
let kernel_noun = Serial.cue pill_bytes in
Printf.printf "[Boot] Pill cued successfully\n%!";
(* For now, treat the entire pill as the kernel
* In a real implementation, we'd parse the structure:
* - Check if it's a cell with [kernel boot-events]
* - Or just a single kernel gate
*)
Ok {
kernel = kernel_noun;
boot_ova = []; (* No boot events for now *)
}
with
| Sys_error msg ->
Error (FileNotFound msg)
| e ->
Error (InvalidPill (Printexc.to_string e))
(* Create a minimal fake pill for testing
*
* This creates a trivial kernel that's just an atom.
* In reality, the kernel is a huge compiled gate, but for
* testing we can use this simple version.
*)
let fake_pill () = {
kernel = Noun.atom 0; (* Minimal kernel - just 0 *)
boot_ova = [];
}
(* Boot Arvo from a pill
*
* Steps:
* 1. Set kernel state to pill's kernel
* 2. Process boot events if any
* 3. Initialize event counter to 0
*)
let boot_from_pill state pill =
Printf.printf "[Boot] Initializing Arvo kernel...\n%!";
(* Set kernel state *)
State.boot state pill.kernel;
(* Process boot events if any *)
List.iteri (fun i _ovum ->
Printf.printf "[Boot] Processing boot event %d\n%!" i;
(* In real implementation: State.poke state ovum *)
) pill.boot_ova;
Printf.printf "[Boot] ✓ Arvo kernel booted!\n%!";
Ok ()
(* Boot from pill file - convenience function *)
let boot_from_file ~fs state pill_path =
match load_pill ~fs pill_path with
| Error err ->
let msg = match err with
| FileNotFound s -> "File not found: " ^ s
| InvalidPill s -> "Invalid pill: " ^ s
| BootFailed s -> "Boot failed: " ^ s
in
Printf.printf "[Boot] Error: %s\n%!" msg;
Error msg
| Ok pill ->
boot_from_pill state pill
(* Create minimal boot for testing (no pill file needed) *)
let boot_fake state =
Printf.printf "[Boot] Creating fake minimal kernel...\n%!";
let pill = fake_pill () in
boot_from_pill state pill
|
