- Fix redox_pci_enable_device to track enabled state instead of noop.
redox_pci_set_master now logs bus master enable.
- Fix redox_request_irq to return the IRQ fd instead of open+close.
redox_free_irq now accepts fd via dev_id and actually closes it.
- SETPLANE now returns EOPNOTSUPP instead of silently succeeding,
with warning about DC dependency.
- OBJ_SETPROPERTY now accepts CRTC_ID (property 30) as a noop
(connector routing is managed by SETCRTC).
- Add VramManager (vram.rs): bump-allocator with free-list coalescing for BAR2 VRAM
aperture. gem_create auto-selects VRAM for scanout buffers (width>0 && height>0)
with fallback to system RAM on exhaustion. gem_close frees VRAM when gpu_addr is
within BAR2 range. ensure_gem_gpu_mapping detects VRAM-backed buffers and skips
GTT mapping.
- Add amdgpu_dc_upload_firmware() stub documenting DMUB firmware upload sequence
prerequisites (requires Linux DC tree compilation).
- Replace generic 'unavailable' CS ioctl/virgl error messages with specific
messages documenting what component is needed (amdgpu core driver, Mesa radeonsi/
iris cross-compilation, CS ioctl backend).
- Fix ASIC detection: use PCI device_id instead of broken MMIO offset-0 read.
Add proper device_id->ASIC family lookup table covering Navi10-Navi33 (RDNA1/RDNA2/RDNA3).
Add per-family properties (DCN revision, firmware name, OTG/HUBP base offsets, HPD register).
- Wire quirk flags from Rust to C: replace pci_get_quirk_flags/pci_has_quirk stubs
(previously always returned 0/false) with stored quirk_flags set via new FFI
redox_pci_set_quirk_flags(). Quirk-aware IRQ policy now actually works.
- Store firmware blobs from Rust to C: add redox_firmware_store() FFI to pass
firmware blobs from AmdDriver.firmware HashMap into C-side storage. C side
can now fall back to scheme:firmware if blobs not pre-stored.
- Fix connector descriptors: replace hardcoded 600x340mm fake dimensions with
per-ASIC-family connector tables (desktop dGPU vs APU layout). Set mm_width/
mm_height to 0 (unprobed — needs DC hardware detection). HPD register offset
now comes from per-family asic_props table.
- Fix register offsets: replace hardcoded OTG base 0x4800 / HUBP base 0x5800
(Navi23-specific) with per-DCN-revision dispatch from asic_props table
(DCN2.0=0x4000/0x5000, DCN3.0=0x4800/0x5800, DCN3.2=0x5000/0x6000).
Consolidate the active desktop path around redbear-full while landing the greeter/session stack and the runtime fixes needed to keep Wayland and KWin bring-up moving forward.
AMD display driver: expanded DCN pipeline setup with plane/controller/stream mapping.
Intel driver: cleaned up module structure.
New interrupt module for MSI-X vector management across GPU drivers.
PCID config endpoint patch and Intel GPU TOML for automatic driver spawning.
Expanded redox_stubs with additional kernel API shims.
Derivative of Redox OS (https://www.redox-os.org) adding:
- AMD GPU driver (amdgpu) via LinuxKPI compat layer
- ext4 filesystem support (ext4d scheme daemon)
- ACPI fixes for AMD bare metal (x2APIC, DMAR, IVRS, MCFG)
- Custom branding (hostname, os-release, boot identity)
Build system is full upstream Redox with RBOS overlay in local/.
Patches for kernel, base, and relibc are symlinked from local/patches/
and protected from make clean/distclean. Custom recipes live in
local/recipes/ with symlinks into the recipes/ search path.
Build: make all CONFIG_NAME=redbear-full
Sync: ./local/scripts/sync-upstream.sh
vasilito