Files
SUB-OS/Makefile
T
subhobhai943 70d5925b16 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
2026-08-18 10:50:58 +05:30

223 lines
8.2 KiB
Makefile

# =============================================================================
# SUB-OS Master Multi-Architecture Linux-Style Makefile
# Supports: x86_64, aarch64, armv8i
# Features: Linux Kconfig TUI (make menuconfig), multi-arch cross-compilation
# =============================================================================
-include .config
# Architecture Selection (Default: x86_64)
ifdef CONFIG_ARCH
ARCH ?= $(CONFIG_ARCH)
else
ARCH ?= x86_64
endif
BUILD_DIR = build
BOOT_DIR = boot
# -----------------------------------------------------------------------------
# Toolchain & Architecture Flags
# -----------------------------------------------------------------------------
ifeq ($(ARCH), x86_64)
CROSS_COMPILE ?= x86_64-elf-
CC = $(CROSS_COMPILE)gcc
LD = $(CROSS_COMPILE)ld
OBJCOPY = $(CROSS_COMPILE)objcopy
ASM = nasm
CFLAGS = -ffreestanding \
-fno-pie \
-fno-pic \
-mno-red-zone \
-mno-mmx \
-mno-sse \
-mno-sse2 \
-mcmodel=kernel \
-Wall \
-Wextra \
-Wno-unused-function \
-Wno-unused-parameter \
-O2 \
-Iinclude \
-D__x86_64__
ASMFLAGS_ELF = -f elf64
ASMFLAGS_BOOT = -f bin -I$(BOOT_DIR)/
LDFLAGS = -nostdlib -no-pie -T linker.ld
# Source files for x86_64
ARCH_C_SRCS = $(shell find arch/x86_64 -name '*.c' 2>/dev/null)
ARCH_ASM_SRCS = $(shell find arch/x86_64 -name '*.asm' 2>/dev/null)
ENTRY_OBJ = $(BUILD_DIR)/arch/x86_64/boot/entry.o
IMAGE = SUB-OS.img
TARGET = $(IMAGE)
QEMU_CMD = qemu-system-x86_64 -drive format=raw,file=$(IMAGE) \
-netdev user,id=net0,hostfwd=tcp::2222-:22,hostfwd=tcp::8080-:80 \
-device e1000,netdev=net0 -serial stdio
else ifneq ($(filter $(ARCH), aarch64 armv8 armv8i),)
CROSS_COMPILE ?= aarch64-linux-gnu-
CC = $(CROSS_COMPILE)gcc
LD = $(CROSS_COMPILE)ld
OBJCOPY = $(CROSS_COMPILE)objcopy
AS = $(CROSS_COMPILE)as
CFLAGS = -ffreestanding \
-fno-pie \
-fno-pic \
-Wall \
-Wextra \
-Wno-unused-function \
-Wno-unused-parameter \
-mno-outline-atomics \
-O2 \
-Iinclude \
-D__aarch64__ \
-march=armv8-a
LDFLAGS = -nostdlib -no-pie -T arch/aarch64/linker.ld
# Source files for AArch64
ARCH_C_SRCS = $(shell find arch/aarch64 -name '*.c' 2>/dev/null)
ARCH_S_SRCS = $(shell find arch/aarch64 -name '*.S' 2>/dev/null)
ENTRY_OBJ = $(BUILD_DIR)/arch/aarch64/boot/entry.o
TARGET = $(BUILD_DIR)/kernel.elf
QEMU_CMD = qemu-system-aarch64 -M virt -cpu cortex-a57 -m 128M -nographic -kernel $(BUILD_DIR)/kernel.elf
else
$(error Unsupported Architecture '$(ARCH)'. Supported: x86_64, aarch64, armv8i)
endif
# -----------------------------------------------------------------------------
# Common Kernel Subsystems
# -----------------------------------------------------------------------------
KERNEL_C_SRCS = $(shell find kernel -name '*.c' 2>/dev/null)
MM_C_SRCS = $(shell find mm -name '*.c' 2>/dev/null)
DRIVERS_C_SRCS = $(shell find drivers -name '*.c' 2>/dev/null)
FS_C_SRCS = $(shell find fs -name '*.c' 2>/dev/null)
NET_C_SRCS = $(shell find net -name '*.c' 2>/dev/null)
CRYPTO_C_SRCS = $(shell find crypto -name '*.c' 2>/dev/null)
LIB_C_SRCS = $(shell find lib -name '*.c' 2>/dev/null)
USERLAND_C_SRCS = $(shell find userland -name '*.c' 2>/dev/null)
CERTS_C_SRCS = $(shell find certs -name '*.c' 2>/dev/null)
INIT_C_SRCS = $(shell find init -name '*.c' 2>/dev/null)
IO_URING_C_SRCS = $(shell find io_uring -name '*.c' 2>/dev/null)
SECURITY_C_SRCS = $(shell find security -name '*.c' 2>/dev/null)
USR_C_SRCS = $(shell find usr -name '*.c' 2>/dev/null)
VIRT_C_SRCS = $(shell find virt -name '*.c' 2>/dev/null)
BLOCK_C_SRCS = $(shell find block -name '*.c' 2>/dev/null)
IPC_C_SRCS = $(shell find ipc -name '*.c' 2>/dev/null)
SOUND_C_SRCS = $(shell find sound -name '*.c' 2>/dev/null)
ALL_C_SRCS = $(ARCH_C_SRCS) $(KERNEL_C_SRCS) $(MM_C_SRCS) $(DRIVERS_C_SRCS) \
$(FS_C_SRCS) $(NET_C_SRCS) $(CRYPTO_C_SRCS) $(LIB_C_SRCS) $(USERLAND_C_SRCS) \
$(CERTS_C_SRCS) $(INIT_C_SRCS) $(IO_URING_C_SRCS) $(SECURITY_C_SRCS) \
$(USR_C_SRCS) $(VIRT_C_SRCS) $(BLOCK_C_SRCS) $(IPC_C_SRCS) $(SOUND_C_SRCS)
# Object Files Mapping
C_OBJS = $(patsubst %.c, $(BUILD_DIR)/%.o, $(ALL_C_SRCS))
ifeq ($(ARCH), x86_64)
ASM_OBJS = $(patsubst %.asm, $(BUILD_DIR)/%.o, $(ARCH_ASM_SRCS))
OTHER_OBJS = $(filter-out $(ENTRY_OBJ), $(ASM_OBJS) $(C_OBJS))
else
S_OBJS = $(patsubst %.S, $(BUILD_DIR)/%.o, $(ARCH_S_SRCS))
OTHER_OBJS = $(filter-out $(ENTRY_OBJ), $(S_OBJS) $(C_OBJS))
endif
.PHONY: all clean run debug info menuconfig config defconfig x86_64_defconfig aarch64_defconfig armv8_defconfig armv8i_defconfig qemu
all: $(TARGET)
# -----------------------------------------------------------------------------
# Configuration Targets (Linux Kconfig TUI)
# -----------------------------------------------------------------------------
menuconfig config:
@python3 scripts/kconfig/menuconfig.py
defconfig:
@python3 scripts/kconfig/menuconfig.py --defconfig $(ARCH)
x86_64_defconfig:
@python3 scripts/kconfig/menuconfig.py --x86_64
aarch64_defconfig:
@python3 scripts/kconfig/menuconfig.py --aarch64
armv8_defconfig armv8i_defconfig:
@python3 scripts/kconfig/menuconfig.py --armv8i
# -----------------------------------------------------------------------------
# Compilation Rules
# -----------------------------------------------------------------------------
# C Source Files
$(BUILD_DIR)/%.o: %.c
@mkdir -p $(dir $@)
$(CC) $(CFLAGS) -c $< -o $@
# x86_64 NASM Assembly Files
$(BUILD_DIR)/%.o: %.asm
@mkdir -p $(dir $@)
$(ASM) $(ASMFLAGS_ELF) $< -o $@
# AArch64 GNU Assembly Files (.S)
$(BUILD_DIR)/%.o: %.S
@mkdir -p $(dir $@)
$(CC) $(CFLAGS) -c $< -o $@
# -----------------------------------------------------------------------------
# x86_64 Bootloader & Image Rules
# -----------------------------------------------------------------------------
$(BUILD_DIR)/boot/boot.bin: $(BOOT_DIR)/boot.asm | $(BUILD_DIR)/boot
$(ASM) $(ASMFLAGS_BOOT) $< -o $@
$(BUILD_DIR)/boot/stage2.bin: $(BOOT_DIR)/stage2.asm $(BOOT_DIR)/gdt.asm | $(BUILD_DIR)/boot
$(ASM) $(ASMFLAGS_BOOT) $< -o $@
$(BUILD_DIR)/boot:
mkdir -p $(BUILD_DIR)/boot
$(BUILD_DIR)/kernel.elf: $(ENTRY_OBJ) $(OTHER_OBJS)
$(LD) $(LDFLAGS) -o $@ $(ENTRY_OBJ) $(OTHER_OBJS)
@echo "=== [Kernel ELF Linked: $@ (Architecture: $(ARCH))] ==="
$(BUILD_DIR)/kernel.bin: $(BUILD_DIR)/kernel.elf
$(OBJCOPY) -O binary $< $@
$(IMAGE): $(BUILD_DIR)/boot/boot.bin $(BUILD_DIR)/boot/stage2.bin $(BUILD_DIR)/kernel.bin
dd if=/dev/zero of=$@ bs=512 count=2880 status=none
dd if=$(BUILD_DIR)/boot/boot.bin of=$@ bs=512 conv=notrunc status=none
dd if=$(BUILD_DIR)/boot/stage2.bin of=$@ bs=512 seek=1 conv=notrunc status=none
dd if=$(BUILD_DIR)/kernel.bin of=$@ bs=512 seek=16 conv=notrunc status=none
@echo "=== [SUB-OS x86_64 Disk Image Built: $@ (Size: $$(du -h $@ | cut -f1))] ==="
# -----------------------------------------------------------------------------
# Execution & Emulation Targets
# -----------------------------------------------------------------------------
run qemu: $(TARGET)
$(QEMU_CMD)
run-server: $(IMAGE)
qemu-system-x86_64 -drive format=raw,file=$(IMAGE) \
-netdev user,id=net0,hostfwd=tcp::2222-:22,hostfwd=tcp::8080-:80 \
-device e1000,netdev=net0 -serial stdio -display none
debug: $(TARGET)
ifeq ($(ARCH), x86_64)
qemu-system-x86_64 -drive format=raw,file=$(IMAGE) \
-netdev user,id=net0,hostfwd=tcp::2222-:22,hostfwd=tcp::8080-:80 \
-device e1000,netdev=net0 -serial stdio -s -S
else
qemu-system-aarch64 -M virt -cpu cortex-a57 -m 128M -nographic -kernel $(BUILD_DIR)/kernel.elf -s -S
endif
info:
@echo "Target Architecture: $(ARCH)"
@echo "Cross Compiler: $(CROSS_COMPILE)"
@echo "C Sources: $(words $(ALL_C_SRCS)) files"
@echo "Target Binary: $(TARGET)"
clean:
rm -rf $(BUILD_DIR) $(IMAGE)