nexoniarz/SchOS
nexoniarz/SchOS
Watch
1
0
Fork
You've already forked SchOS
 0
Code Issues Pull requests Projects Releases 1 Packages Wiki Activity Actions

storage: NVMe, so a laptop's SSD is a disk SchOS can boot from

Browse source 
A native driver written from the NVMe 1.4 base specification. It resets
the controller the firmware left running, then sets up an admin queue and
one I/O queue pair. Completion is polled, with interrupts disabled at the
queue, for the same reason AHCI polls: without AML, interrupt routing on
real hardware cannot be trusted. Each active namespace with 512-byte to
4 KB sectors and no metadata is registered as nvme<C>n<N>, the name
Linux uses, and its GPT is read like any other disk's.

Tested under QEMU q35: disk.img on NVMe as the only disk boots through
OVMF, roots on nvme0n1p2, and writes read back after sync. A
4 KB-sector namespace registers.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01S1giNvrHTrPMPw7V6x1kQ4
This commit is contained in:
Nexoniarz 2026-10-22 15:48:11 +02:00
commit efb6446f47
5 changed files with 484 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

1
Makefile
View file

@ -48,6 +48,7 @@ KERN_DRIVERS += $(BUILD)/kernel/drivers/net/rtl8139/rtl8139.o
KERN_DRIVERS += $(BUILD)/kernel/drivers/audio/ac97.o
KERN_DRIVERS += $(BUILD)/kernel/drivers/bus/xhci/xhci.o
KERN_DRIVERS += $(BUILD)/kernel/drivers/storage/ahci/ahci.o
KERN_DRIVERS += $(BUILD)/kernel/drivers/storage/nvme/nvme.o
KERN_DRIVERS += $(BUILD)/kernel/drivers/usb/core/usb.o
KERN_DRIVERS += $(BUILD)/kernel/drivers/usb/hid/usb_hid.o
KERN_DRIVERS += $(BUILD)/kernel/drivers/usb/storage/usb_storage.o