Robert Allan JamesandClaude Sonnet 5
eeceec21a5
Closes the contributor-capsule/trust-tier punch-list item. Decided direction: QEMU-vs-real-hardware conditional enforcement. Found before building on that decision: the obvious mechanism (expose TimerInfo.vm_mode) only works on amd64 -- aarch64 and riscv64 both had vm_mode hardcoded to 1 unconditionally, meaning they'd always report "running under QEMU" even on real hardware. Built real detection for both instead of shipping that: aarch64 checks the ACPI RSDP's OEM ID for QEMU's "BOCHS " SeaBIOS-heritage signature; riscv64 checks the devicetree root compatible property for "qemu". Confirmed vm_mode was otherwise unread anywhere else in either file first -- zero risk to existing timing behavior. CAPSULE_FLAG_CONTRIB (mkcapsule.c: FLAG_CONTRIB) path-matches on capsules/contrib/, mirroring FLAG_MAMA_INIT's exact-match pattern. contrib_capsule_refused() (capsule_birth.c) enforces: no additional check under QEMU (same WARN-only as everything else); on real hardware, a contrib capsule additionally requires CAPSULE_SIG_OK, since it has no other provenance to fall back on. Wired into capsule_birth_baby() and capsule_run_experiment(). Also updates §I.7 (Milestone 9): its stated precondition (Milestone 7 closing) is now met, flagged as stale rather than treated as a green light to design networking from nothing. Verified 3-arch boot to ok> (amd64/aarch64/riscv64, each in the foreground) -- compile/boot verification only; the real-hardware enforcement branch is unverifiable from this environment, same as all of §I.6. logs and DoE CSVs from this session's verification runs included per this repo's own audit-artifact convention. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019YcT3H2PQeyujrzjqS3Var
capsules/
FORTH personality files loaded by the VM at boot. A capsule is an immutable, content-addressed payload; its XXHash64 hash is its identity. Any mutation changes the hash and the birth protocol rejects the image.
Key files
| File | Type | Purpose |
|---|---|---|
init.4th |
(m) MAMA_INIT |
Default Mama VM personality — loaded at LBN 2048 |
ACL.4th |
user | Word-level ACL system; self-activating at boot |
zuse.4th |
user | Bootstrap superuser; loaded by ACL.4th |
doe.4th |
user | DoE workload words (EXEC-DOE) — opt-in |
init-0.4th … init-9.4th |
(p) |
Numbered personality variants |
init-l8-*.4th |
(p) |
L8 Jacquard mode variants (stable/volatile/diverse/temporal/transition/omni) |
hermes/init.4th |
(p) |
Hermes baby VM personality |
artemis/init.4th |
(p) |
Artemis baby VM personality |
Block namespace
Block ranges are shared across all loaded capsules — collisions cause silent word-definition overwrites.
| Range | Owner |
|---|---|
| 2048–2099 | init.4th |
| 2100–2199 | doe.4th |
| 3000–3999 | workload capsules |
| 4000+ | user-defined (ACL.4th, zuse.4th, …) |
Each block is limited to 1024 bytes. Verify with wc -c before committing.
See also
experiments/bare_metal/README.md— DoE protocols and block namespace rulesdocs/03-architecture/word-acl/DESIGN.md— ACL system designtools/mkcapsule.c— assembles capsules intocapsule_generated.c- Project root