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feat(arch): Add AArch64 / ARMv8i CPU support, cross-compilation & Linux Kconfig TUI
- Implement AArch64 HAL, vector table (16 aligned vectors), GICv2, Generic Timer, Stage-1 MMU (39-bit VA), PL011 UART - Build unified multi-architecture abstraction layer in include/arch/arch.h - Create interactive Linux-like Kconfig TUI menuconfig in scripts/kconfig/menuconfig.py - Support make menuconfig, defconfig, x86_64_defconfig, aarch64_defconfig - Update master Makefile for cross-compiling x86_64 (x86_64-elf-) and AArch64 (aarch64-linux-gnu-) - Dynamic architecture awareness across printk, uname, neofetch, and LazyBox
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@@ -1,43 +1,97 @@
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# =============================================================================
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# SUB-OS Master Makefile - Modular Monolithic Linux-Like Kernel Build System
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# SUB-OS Master Multi-Architecture Linux-Style Makefile
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# Supports: x86_64, aarch64, armv8i
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# Features: Linux Kconfig TUI (make menuconfig), multi-arch cross-compilation
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# =============================================================================
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# Cross Compiler & Toolchain Detection
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CROSS_COMPILE ?= x86_64-elf-
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-include .config
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CC = $(CROSS_COMPILE)gcc
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LD = $(CROSS_COMPILE)ld
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OBJCOPY = $(CROSS_COMPILE)objcopy
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ASM = nasm
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# Architecture Selection (Default: x86_64)
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ifdef CONFIG_ARCH
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ARCH ?= $(CONFIG_ARCH)
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else
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ARCH ?= x86_64
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endif
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# Build Directories
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BUILD_DIR = build
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BOOT_DIR = boot
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# Target Architecture Flags
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CFLAGS = -ffreestanding \
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-fno-pie \
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-fno-pic \
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-mno-red-zone \
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-mno-mmx \
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-mno-sse \
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-mno-sse2 \
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-mcmodel=kernel \
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-Wall \
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-Wextra \
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-Wno-unused-function \
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-Wno-unused-parameter \
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-O2 \
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-Iinclude
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# -----------------------------------------------------------------------------
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# Toolchain & Architecture Flags
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# -----------------------------------------------------------------------------
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ifeq ($(ARCH), x86_64)
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CROSS_COMPILE ?= x86_64-elf-
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CC = $(CROSS_COMPILE)gcc
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LD = $(CROSS_COMPILE)ld
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OBJCOPY = $(CROSS_COMPILE)objcopy
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ASM = nasm
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ASMFLAGS_ELF = -f elf64
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ASMFLAGS_BOOT = -f bin -I$(BOOT_DIR)/
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CFLAGS = -ffreestanding \
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-fno-pie \
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-fno-pic \
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-mno-red-zone \
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-mno-mmx \
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-mno-sse \
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-mno-sse2 \
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-mcmodel=kernel \
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-Wall \
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-Wextra \
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-Wno-unused-function \
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-Wno-unused-parameter \
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-O2 \
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-Iinclude \
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-D__x86_64__
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LDFLAGS = -nostdlib -no-pie -T linker.ld
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ASMFLAGS_ELF = -f elf64
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ASMFLAGS_BOOT = -f bin -I$(BOOT_DIR)/
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LDFLAGS = -nostdlib -no-pie -T linker.ld
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# Source Files Discovery
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ARCH_C_SRCS = $(shell find arch -name '*.c' 2>/dev/null)
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ARCH_ASM_SRCS = $(shell find arch -name '*.asm' 2>/dev/null)
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# Source files for x86_64
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ARCH_C_SRCS = $(shell find arch/x86_64 -name '*.c' 2>/dev/null)
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ARCH_ASM_SRCS = $(shell find arch/x86_64 -name '*.asm' 2>/dev/null)
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ENTRY_OBJ = $(BUILD_DIR)/arch/x86_64/boot/entry.o
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IMAGE = SUB-OS.img
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TARGET = $(IMAGE)
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QEMU_CMD = qemu-system-x86_64 -drive format=raw,file=$(IMAGE) \
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-netdev user,id=net0,hostfwd=tcp::2222-:22,hostfwd=tcp::8080-:80 \
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-device e1000,netdev=net0 -serial stdio
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else ifneq ($(filter $(ARCH), aarch64 armv8 armv8i),)
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CROSS_COMPILE ?= aarch64-linux-gnu-
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CC = $(CROSS_COMPILE)gcc
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LD = $(CROSS_COMPILE)ld
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OBJCOPY = $(CROSS_COMPILE)objcopy
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AS = $(CROSS_COMPILE)as
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CFLAGS = -ffreestanding \
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-fno-pie \
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-fno-pic \
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-Wall \
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-Wextra \
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-Wno-unused-function \
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-Wno-unused-parameter \
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-mno-outline-atomics \
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-O2 \
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-Iinclude \
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-D__aarch64__ \
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-march=armv8-a
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LDFLAGS = -nostdlib -no-pie -T arch/aarch64/linker.ld
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# Source files for AArch64
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ARCH_C_SRCS = $(shell find arch/aarch64 -name '*.c' 2>/dev/null)
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ARCH_S_SRCS = $(shell find arch/aarch64 -name '*.S' 2>/dev/null)
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ENTRY_OBJ = $(BUILD_DIR)/arch/aarch64/boot/entry.o
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TARGET = $(BUILD_DIR)/kernel.elf
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QEMU_CMD = qemu-system-aarch64 -M virt -cpu cortex-a57 -m 128M -nographic -kernel $(BUILD_DIR)/kernel.elf
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else
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$(error Unsupported Architecture '$(ARCH)'. Supported: x86_64, aarch64, armv8i)
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endif
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# -----------------------------------------------------------------------------
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# Common Kernel Subsystems
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# -----------------------------------------------------------------------------
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KERNEL_C_SRCS = $(shell find kernel -name '*.c' 2>/dev/null)
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MM_C_SRCS = $(shell find mm -name '*.c' 2>/dev/null)
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DRIVERS_C_SRCS = $(shell find drivers -name '*.c' 2>/dev/null)
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@@ -52,7 +106,6 @@ IO_URING_C_SRCS = $(shell find io_uring -name '*.c' 2>/dev/null)
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SECURITY_C_SRCS = $(shell find security -name '*.c' 2>/dev/null)
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USR_C_SRCS = $(shell find usr -name '*.c' 2>/dev/null)
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VIRT_C_SRCS = $(shell find virt -name '*.c' 2>/dev/null)
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BLOCK_C_SRCS = $(shell find block -name '*.c' 2>/dev/null)
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IPC_C_SRCS = $(shell find ipc -name '*.c' 2>/dev/null)
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SOUND_C_SRCS = $(shell find sound -name '*.c' 2>/dev/null)
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@@ -63,81 +116,107 @@ ALL_C_SRCS = $(ARCH_C_SRCS) $(KERNEL_C_SRCS) $(MM_C_SRCS) $(DRIVERS_C_SRCS) \
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$(USR_C_SRCS) $(VIRT_C_SRCS) $(BLOCK_C_SRCS) $(IPC_C_SRCS) $(SOUND_C_SRCS)
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# Object Files Mapping
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C_OBJS = $(patsubst %.c, $(BUILD_DIR)/%.o, $(ALL_C_SRCS))
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ASM_OBJS = $(patsubst %.asm, $(BUILD_DIR)/%.o, $(ARCH_ASM_SRCS))
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C_OBJS = $(patsubst %.c, $(BUILD_DIR)/%.o, $(ALL_C_SRCS))
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# Put entry.o first in linker sequence
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ENTRY_OBJ = $(BUILD_DIR)/arch/x86_64/boot/entry.o
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OTHER_OBJS = $(filter-out $(ENTRY_OBJ), $(ASM_OBJS) $(C_OBJS))
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ifeq ($(ARCH), x86_64)
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ASM_OBJS = $(patsubst %.asm, $(BUILD_DIR)/%.o, $(ARCH_ASM_SRCS))
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OTHER_OBJS = $(filter-out $(ENTRY_OBJ), $(ASM_OBJS) $(C_OBJS))
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else
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S_OBJS = $(patsubst %.S, $(BUILD_DIR)/%.o, $(ARCH_S_SRCS))
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OTHER_OBJS = $(filter-out $(ENTRY_OBJ), $(S_OBJS) $(C_OBJS))
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endif
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IMAGE = SUB-OS.img
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.PHONY: all clean run debug info menuconfig config defconfig x86_64_defconfig aarch64_defconfig armv8_defconfig armv8i_defconfig qemu
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.PHONY: all clean run debug info
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all: $(TARGET)
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all: $(IMAGE)
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# -----------------------------------------------------------------------------
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# Configuration Targets (Linux Kconfig TUI)
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# -----------------------------------------------------------------------------
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menuconfig config:
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@python3 scripts/kconfig/menuconfig.py
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# Assemble 16-bit Bootloader Stage 1
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$(BUILD_DIR)/boot/boot.bin: $(BOOT_DIR)/boot.asm | $(BUILD_DIR)/boot
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$(ASM) $(ASMFLAGS_BOOT) $< -o $@
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defconfig:
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@python3 scripts/kconfig/menuconfig.py --defconfig $(ARCH)
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# Assemble 16/32/64-bit Bootloader Stage 2
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$(BUILD_DIR)/boot/stage2.bin: $(BOOT_DIR)/stage2.asm $(BOOT_DIR)/gdt.asm | $(BUILD_DIR)/boot
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$(ASM) $(ASMFLAGS_BOOT) $< -o $@
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x86_64_defconfig:
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@python3 scripts/kconfig/menuconfig.py --x86_64
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# Compile 64-bit C source files
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aarch64_defconfig:
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@python3 scripts/kconfig/menuconfig.py --aarch64
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armv8_defconfig armv8i_defconfig:
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@python3 scripts/kconfig/menuconfig.py --armv8i
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# -----------------------------------------------------------------------------
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# Compilation Rules
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# -----------------------------------------------------------------------------
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# C Source Files
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$(BUILD_DIR)/%.o: %.c
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@mkdir -p $(dir $@)
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$(CC) $(CFLAGS) -c $< -o $@
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# Assemble 64-bit ASM source files
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# x86_64 NASM Assembly Files
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$(BUILD_DIR)/%.o: %.asm
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@mkdir -p $(dir $@)
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$(ASM) $(ASMFLAGS_ELF) $< -o $@
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# Link Kernel ELF
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$(BUILD_DIR)/kernel.elf: $(ENTRY_OBJ) $(OTHER_OBJS) linker.ld
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# AArch64 GNU Assembly Files (.S)
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$(BUILD_DIR)/%.o: %.S
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@mkdir -p $(dir $@)
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$(CC) $(CFLAGS) -c $< -o $@
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# -----------------------------------------------------------------------------
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# x86_64 Bootloader & Image Rules
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# -----------------------------------------------------------------------------
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$(BUILD_DIR)/boot/boot.bin: $(BOOT_DIR)/boot.asm | $(BUILD_DIR)/boot
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$(ASM) $(ASMFLAGS_BOOT) $< -o $@
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$(BUILD_DIR)/boot/stage2.bin: $(BOOT_DIR)/stage2.asm $(BOOT_DIR)/gdt.asm | $(BUILD_DIR)/boot
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$(ASM) $(ASMFLAGS_BOOT) $< -o $@
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$(BUILD_DIR)/boot:
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mkdir -p $(BUILD_DIR)/boot
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$(BUILD_DIR)/kernel.elf: $(ENTRY_OBJ) $(OTHER_OBJS)
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$(LD) $(LDFLAGS) -o $@ $(ENTRY_OBJ) $(OTHER_OBJS)
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@echo "=== [Kernel ELF Linked: $@ (Architecture: $(ARCH))] ==="
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# Convert ELF to Flat Binary
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$(BUILD_DIR)/kernel.bin: $(BUILD_DIR)/kernel.elf
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$(OBJCOPY) -O binary $< $@
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# Create Bootable Floppy / HDD Raw Disk Image
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$(IMAGE): $(BUILD_DIR)/boot/boot.bin $(BUILD_DIR)/boot/stage2.bin $(BUILD_DIR)/kernel.bin
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dd if=/dev/zero of=$@ bs=512 count=2880 status=none
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dd if=$(BUILD_DIR)/boot/boot.bin of=$@ bs=512 conv=notrunc status=none
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dd if=$(BUILD_DIR)/boot/stage2.bin of=$@ bs=512 seek=1 conv=notrunc status=none
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dd if=$(BUILD_DIR)/kernel.bin of=$@ bs=512 seek=16 conv=notrunc status=none
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@echo "=== [SUB-OS Disk Image Built Successfully: $@ (Size: $$(du -h $@ | cut -f1))] ==="
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@echo "=== [SUB-OS x86_64 Disk Image Built: $@ (Size: $$(du -h $@ | cut -f1))] ==="
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$(BUILD_DIR)/boot:
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mkdir -p $(BUILD_DIR)/boot
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run: $(IMAGE)
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qemu-system-x86_64 -drive format=raw,file=$(IMAGE) \
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-netdev user,id=net0,hostfwd=tcp::2222-:22,hostfwd=tcp::8080-:80 \
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-device e1000,netdev=net0 -serial stdio
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# -----------------------------------------------------------------------------
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# Execution & Emulation Targets
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# -----------------------------------------------------------------------------
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run qemu: $(TARGET)
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$(QEMU_CMD)
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run-server: $(IMAGE)
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qemu-system-x86_64 -drive format=raw,file=$(IMAGE) \
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-netdev user,id=net0,hostfwd=tcp::2222-:22,hostfwd=tcp::8080-:80 \
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-device e1000,netdev=net0 -serial stdio -display none
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run-remote: $(IMAGE)
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qemu-system-x86_64 -drive format=raw,file=$(IMAGE) \
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-netdev user,id=net0,hostfwd=tcp::2222-:22,hostfwd=tcp::8080-:80 \
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-device e1000,netdev=net0 \
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-serial telnet:0.0.0.0:2222,server,nowait -display none
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debug: $(IMAGE)
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debug: $(TARGET)
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ifeq ($(ARCH), x86_64)
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qemu-system-x86_64 -drive format=raw,file=$(IMAGE) \
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-netdev user,id=net0,hostfwd=tcp::2222-:22,hostfwd=tcp::8080-:80 \
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-device e1000,netdev=net0 -serial stdio -s -S
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else
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qemu-system-aarch64 -M virt -cpu cortex-a57 -m 128M -nographic -kernel $(BUILD_DIR)/kernel.elf -s -S
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endif
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info:
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@echo "C Sources: $(words $(ALL_C_SRCS)) files"
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@echo "ASM Sources: $(words $(ARCH_ASM_SRCS)) files"
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@echo "Target: $(IMAGE)"
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@echo "Target Architecture: $(ARCH)"
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@echo "Cross Compiler: $(CROSS_COMPILE)"
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@echo "C Sources: $(words $(ALL_C_SRCS)) files"
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@echo "Target Binary: $(TARGET)"
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clean:
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rm -rf $(BUILD_DIR) $(IMAGE)
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