Robert Allan JamesandClaude Sonnet 5
030a3e6dc0
Before flipping, found CAPSULE_SIG_MISSING (no signature at all) is the normal state everywhere except this machine -- CI and any other checkout have no access to the offline key, by design. Refusing on MISSING the same as INVALID would brick boot everywhere but here. Decided (on request): enforce ONLY on CAPSULE_SIG_INVALID (a signature that IS present but doesn't verify -- unambiguous tampering/corruption evidence). MISSING/NO_ROOT_KEY stay WARN-only permanently. All three capsule_birth.c call sites now return CAPSULE_RUN_ERR_INVALID on CAPSULE_SIG_INVALID, after logging the same WARN as before. Verified on all three architectures, both directions, per the original rollout commitment: positive case (real signed capsules) reboots clean with zero warnings on amd64/aarch64/riscv64. Negative case (same one-byte signature corruption used for the WARN-only proof, on Mama's own init.4th) now genuinely refuses identically on all three: "capsule sig: init.4th: INVALID" then "Init: Mama birth FAILED". The feared "no ok> at all" blast radius didn't materialize -- kernel_main.c already had graceful error handling for a failed Mama birth (log and continue, pre-existing code); the kernel reaches a degraded ok> rather than crashing, on all three architectures. Final acceptance pass (real signed capsules, tampering reverted) clean on all three. Milestone 6 is now fully closed except magic-number content-type detection (shared with Milestone 4, separate scope, not started). Documented in FABRIC-3.md. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01U14ET9CWAtbQMbYqomKgXd
include/starkernel/
Headers for LithosAnanke, the bare-metal UEFI kernel (src/starkernel/).
Built only via Makefile.starkernel; gated by __STARKERNEL__ when shared
with hosted code.
uefi.h— UEFI protocol/type definitions consumed by the loader.elf64.h,elf_loader.h— ELF64 parsing and kernel-image loading.boot_info_offsets.h— struct-offset constants shared between the assembly bootstrap and the C boot path.arch.h,apic.h,timer.h— architecture init, APIC interrupt controller, timer (TSC/HPET/APIC, 100 Hz heartbeat).console.h,framebuffer.h,vt100.h— UART 16550 console, framebuffer driver, and VT100 terminal emulation over the framebuffer.pmm.h,vmm.h,kmalloc.h— physical memory manager (bitmap allocator), 4-level x86_64 paging, kernel heap allocator.pci.h,virtio_blk.h— PCI enumeration and the VirtIO block device driver (disk backend for the kernel block subsystem).capsule.h,capsule_birth.h,capsule_loader.h,capsule_run.h,capsule_vm_physics.h,capsule_generated.h— capsule system types, birth protocol, physics-runtime capsule bindings, and the build-time- generated capsule directory (seetools/mkcapsule.c).kernel_args.h,cmdline.h— boot-time kernel argument parsing (starforth.cfg/ command line).repl.h— kernel REPL.log.h,doe_log.h— kernel logging and DoE metrics logging.q48_16.h— kernel-build copy of Q48.16 fixed-point arithmetic.xxhash64.h— content-addressing hash used for capsule IDs.hal_memory.h— hardware-abstraction-layer memory interface.
Subdirectories:
hal/— top-level hardware-abstraction-layer interface.vm/— kernel VM subsystem headers (capsule arena, parity logging, bootstrap wiring).freestanding/— minimal libc-shim headers (assert.h,ctype.h,errno.h,inttypes.h,math.h,sched.h,signal.h,stdio.h,stdlib.h,string.h,time.h,sys/time.h,sys/types.h) for building shared VM code in the freestanding kernel environment, where no real libc is available.