Adds --bootloader and --filesystem to installer help text. Fixes
fstools host build by symlinking local/ directory alongside recipes/
so the ext4-blockdev path dependency resolves correctly.
Extends the installer to write a GRUB chainload ESP layout when
bootloader = "grub" is set in config. Changes GeneralConfig, DiskOption,
fetch_bootloaders, with_whole_disk, with_whole_disk_ext4, and both CLI
binaries. When GRUB mode is active, the ESP contains GRUB as primary
(BOOTX64.EFI), grub.cfg, and the Redox bootloader as chainload target
(EFI/REDBEAR/redbear.efi).
5-second countdown with any-key cancel into manual mode selection. Defaults to 1280x720, falls back to EDID best resolution. UEFI only via get_key_timeout polling with BootServices.Stall.
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.
Rebuild base/acpid patch as comprehensive unified diff combining: DMAR iterator fix, FADT shutdown via PM1a/PM1b CNT_BLK with S5 sleep types from _S5 AML, ACPI reset register reboot with keyboard controller fallback (port 0x64, 0xFE), and power methods (_PS0/_PS3/_PPC). GenericAddress now supports memory-mapped and I/O port writes. Reboot wired into main.rs event loop with reboot_requested flag. All ivrs/mcfg stub references removed. Validated with git apply --check against upstream base source.
Add MadtLocalApicNmi (type 0x4), MadtLapicAddressOverride (type 0x5), and MadtLocalX2ApicNmi (type 0xA) structs with compile-time size assertions. Add enum variants and iterator cases for all three. Implement set_lvt_nmi() on LocalApic for both xAPIC (LINT0/LINT1 at offsets 0x350/0x360) and x2APIC (MSRs 0x835/0x836) with NMI delivery mode, polarity, and trigger mode from MADT flags. Process NMI entries in x86.rs MADT loop to configure per-CPU LVT NMI registers. Parse and log LAPIC address override (64-bit) for future use.
Add Sdt::validate_checksum() method that sums all bytes in the table and verifies the result is zero per ACPI spec. Call it during ACPI table iteration in init() — warn on invalid checksum but do not skip the table, to avoid breaking boot on firmware with slightly incorrect checksums.
The base patch referenced ivrs and mcfg modules that don't exist in the source tree, causing build failures. Removed the module declarations, imports, and init calls. MCFG is already handled by pcid (the PCI daemon). IVRS (AMD IOMMU) needs real implementation, not a stub. DMAR iterator fix and Dmar::init() call preserved.
The critical fix: local_apic.rs id() now returns (read(0x20) >> 24) for xAPIC mode instead of the raw register value. This was causing wrong APIC IDs on Intel, leading to misrouted IPIs, missed TLB shootdowns, and the page fault during context switch at switch.rs:317.
Also adds:
- Named ICR constants (ICR_INIT_ASSERT, ICR_STARTUP) with bit-layout comments
- Comment documenting x2APIC timeout limitation (cpu_id allocated before timeout check)
- All existing changes preserved (x2APIC MADT type 9, cpuid split, memory alignment, RSDP checksum, ICR pending wait, MADT entry length guard)
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