New src/starkernel/usb/ subsystem directory (added to both LOADER_SRCS_BASE and KERNEL_SRCS_BASE wildcards in Makefile.starkernel, matching the existing virtio/*.c pattern). xhci_find_and_map() locates the controller via the already-generic pci_find_first(), enables it, maps BAR0 via the already-generic pci_map_bar(), and fills in all four register-region pointers (cap/op/runtime/doorbell) plus max_slots/ max_ports/max_intrs from HCSPARAMS1 -- ready for controller bring-up (2c) to consume directly. No pci.c extension needed, per 2a's finding that PCI discovery here is ID-based lookup (already generic), not class-code scanning. Verified: clean standalone syntax check, full amd64 kernel build with zero warnings, live boot still reaches POST 1012/0/0 unaffected (nothing calls xhci_find_and_map() yet, so this is purely additive). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
src/starkernel/
LithosAnanke — the bare-metal UEFI kernel that boots StarForth directly on
hardware (amd64/aarch64/riscv64). Built only via Makefile.starkernel; the
only valid acceptance test is the three-arch QEMU boot (see
.claude/CLAUDE.md), never make test.
kernel_main.c— kernel entry point, driving the boot milestones (console init, PMM, VMM, interrupts, timers, kmalloc heap, VM bootstrap).repl.c— kernel REPL.doe_log.c— kernel-side DoE (Design of Experiments) metrics logging.
Subdirectories:
arch/{amd64,aarch64,riscv64}/— per-architecture support (APIC/GIC/ PLIC interrupt controller, timers, boot/ISR assembly).boot/— UEFI loader, ELF loading, kernel command-line parsing.capsule/— capsule birth/run/load/validate pipeline.hal/— hardware-abstraction-layer implementation (console, framebuffer, VT100, memory, host services).hash/— XXHash64 content-addressing implementation.math/— kernel-build Q48.16 fixed-point arithmetic.memory/— physical/virtual memory managers and the kernel heap.pci/— PCI bus enumeration.virtio/— VirtIO block device driver.vm/— kernel VM subsystem (bootstrap, core interpreter, parity logging, capsule arena).
See include/starkernel/README.md for the corresponding headers.