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feat(arch): Add AArch64 / ARMv8i CPU support, cross-compilation & Linux Kconfig TUI

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- 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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subhobhai943 committed 2026-08-18 10:50:58 +05:30
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scripts/kconfig/menuconfig.py
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#!/usr/bin/env python3
"""
SUB-OS Linux-Style Interactive Kconfig Menuconfig (TUI)
Provides a full curses-based terminal configuration UI matching Linux menuconfig.
Generates .config and include/config/autoconf.h.
"""
import sys
import os
import curses
CONFIG_FILE = ".config"
AUTOCONF_HEADER = "include/config/autoconf.h"
DEFAULTS = {
# Architecture
"CONFIG_ARCH": "x86_64",
"CONFIG_ARCH_X86_64": True,
"CONFIG_ARCH_AARCH64": False,
"CONFIG_ARCH_ARMV8I": False,
# General Setup
"CONFIG_SUBOS_HOSTNAME": "sub-os",
"CONFIG_SUBOS_VERSION": "0.2.0-lts",
"CONFIG_SMP": True,
"CONFIG_PREEMPT": True,
"CONFIG_OPTIMIZATION": "-O2",
# Memory Management
"CONFIG_MM_PMM": True,
"CONFIG_MM_SLAB": True,
"CONFIG_MM_VMA": True,
# Filesystems
"CONFIG_FS_VFS": True,
"CONFIG_FS_FAT32": True,
"CONFIG_FS_EXT2": True,
"CONFIG_FS_RAMFS": True,
"CONFIG_FS_DEVFS": True,
"CONFIG_FS_PROCFS": True,
"CONFIG_FS_SYSFS": True,
# Storage Drivers
"CONFIG_DRV_NVME": True,
"CONFIG_DRV_AHCI": True,
"CONFIG_DRV_ATA": True,
"CONFIG_DRV_VIRTIO_BLK": True,
"CONFIG_DRV_RAMDISK": True,
# Network Drivers & Stack
"CONFIG_NET_STACK": True,
"CONFIG_DRV_E1000": True,
"CONFIG_DRV_RTL8139": True,
"CONFIG_DRV_VIRTIO_NET": True,
"CONFIG_NET_HTTPD": True,
"CONFIG_NET_SSHD": True,
"CONFIG_NET_FILTER": True,
# Audio & Display
"CONFIG_DRV_SOUND_HDA": True,
"CONFIG_DRV_SOUND_AC97": True,
"CONFIG_DRV_BOCHS_VBE": True,
"CONFIG_DRV_CANVAS_2D": True,
# Bus, Sensors & Crypto
"CONFIG_DRV_USB_XHCI": True,
"CONFIG_DRV_HWMON": True,
"CONFIG_DRV_VIRTIO_RNG": True,
"CONFIG_DRV_PTY": True,
# Security & Advanced
"CONFIG_SECURITY_LSM": True,
"CONFIG_SECURITY_KEYRING": True,
"CONFIG_BPF_VM": True,
"CONFIG_IO_URING": True,
"CONFIG_USERLAND_LAZYBOX": True,
}
MENU_STRUCTURE = [
{
"title": "Target Architecture Selection",
"type": "submenu",
"items": [
{"name": "CONFIG_ARCH_X86_64", "label": "x86_64 (64-Bit AMD64/Intel x86-64)", "type": "radio", "group": "arch", "val": "x86_64"},
{"name": "CONFIG_ARCH_AARCH64", "label": "aarch64 (ARMv8-A 64-Bit Cortex/Neoverse)", "type": "radio", "group": "arch", "val": "aarch64"},
{"name": "CONFIG_ARCH_ARMV8I", "label": "armv8i (ARMv8 Instruction Set Profile)", "type": "radio", "group": "arch", "val": "armv8i"},
]
},
{
"title": "General Kernel Setup",
"type": "submenu",
"items": [
{"name": "CONFIG_SMP", "label": "Symmetric Multi-Processing (SMP) Support", "type": "bool"},
{"name": "CONFIG_PREEMPT", "label": "Preemptive Kernel Scheduling Model", "type": "bool"},
{"name": "CONFIG_BPF_VM", "label": "In-Kernel eBPF Register Virtual Machine", "type": "bool"},
{"name": "CONFIG_IO_URING", "label": "High-Performance io_uring Ring Buffers", "type": "bool"},
]
},
{
"title": "Virtual File Systems & Storage Drivers",
"type": "submenu",
"items": [
{"name": "CONFIG_FS_FAT32", "label": "FAT32 / VFAT File System Driver", "type": "bool"},
{"name": "CONFIG_FS_EXT2", "label": "Second Extended (EXT2) Linux File System", "type": "bool"},
{"name": "CONFIG_FS_SYSFS", "label": "Sysfs KObject Virtual Hierarchy (/sys)", "type": "bool"},
{"name": "CONFIG_DRV_NVME", "label": "NVM Express (NVMe PCIe SSD) Driver", "type": "bool"},
{"name": "CONFIG_DRV_AHCI", "label": "AHCI SATA 6Gb/s SSD/HDD Controller Driver", "type": "bool"},
{"name": "CONFIG_DRV_VIRTIO_BLK", "label": "VirtIO Paravirtualized Block Storage (/dev/vda)", "type": "bool"},
]
},
{
"title": "Network Subsystem & Hardware Adapters",
"type": "submenu",
"items": [
{"name": "CONFIG_NET_STACK", "label": "TCP/IP Network Stack (IPv4, UDP, TCP)", "type": "bool"},
{"name": "CONFIG_DRV_E1000", "label": "Intel 82540EM Gigabit Ethernet NIC Driver", "type": "bool"},
{"name": "CONFIG_DRV_RTL8139", "label": "Realtek RTL8139 Fast Ethernet NIC Driver", "type": "bool"},
{"name": "CONFIG_DRV_VIRTIO_NET", "label": "VirtIO 10-Gigabit Paravirtualized NIC", "type": "bool"},
{"name": "CONFIG_NET_FILTER", "label": "NetFilter Stateful Packet Firewall (iptables)", "type": "bool"},
{"name": "CONFIG_NET_SSHD", "label": "In-Kernel Secure Shell (SSH) Daemon", "type": "bool"},
]
},
{
"title": "Device Drivers & Multimedia",
"type": "submenu",
"items": [
{"name": "CONFIG_DRV_CANVAS_2D", "label": "2D TrueColor Rasterizer Canvas Graphics Engine", "type": "bool"},
{"name": "CONFIG_DRV_BOCHS_VBE", "label": "Bochs / VBE Dynamic Resolution Display Adapter", "type": "bool"},
{"name": "CONFIG_DRV_SOUND_HDA", "label": "Intel High Definition Audio (Azalia HDA) Driver", "type": "bool"},
{"name": "CONFIG_DRV_SOUND_AC97", "label": "Analog Devices AC'97 Sound Codec Driver", "type": "bool"},
{"name": "CONFIG_DRV_USB_XHCI", "label": "USB 3.0 Extensible Host Controller (xHCI)", "type": "bool"},
{"name": "CONFIG_DRV_HWMON", "label": "HWMON CPU CoreTemp & Fan Tachometer Sensors", "type": "bool"},
{"name": "CONFIG_DRV_VIRTIO_RNG", "label": "VirtIO True Hardware Random Generator (/dev/hwrng)", "type": "bool"},
{"name": "CONFIG_DRV_PTY", "label": "Unix98 Pseudo-Terminal (PTY) Subsystem (/dev/pts)", "type": "bool"},
]
},
{
"title": "Security, LSM & Keyrings",
"type": "submenu",
"items": [
{"name": "CONFIG_SECURITY_LSM", "label": "Linux Security Module (LSM) Mandatory Access Control", "type": "bool"},
{"name": "CONFIG_SECURITY_KEYRING", "label": "X.509 Cryptographic Keyring & Certificates", "type": "bool"},
]
},
{
"title": "Userland Core & LazyBox",
"type": "submenu",
"items": [
{"name": "CONFIG_USERLAND_LAZYBOX", "label": "LazyBox Multi-Call Userland Utility Suite (70+ Tools)", "type": "bool"},
]
}
]
def load_config():
cfg = dict(DEFAULTS)
if os.path.exists(CONFIG_FILE):
with open(CONFIG_FILE, "r") as f:
for line in f:
line = line.strip()
if not line or line.startswith("#"):
continue
if "=" in line:
k, v = line.split("=", 1)
k = k.strip()
v = v.strip().strip('"')
if v == "y":
cfg[k] = True
elif v == "n":
cfg[k] = False
else:
cfg[k] = v
return cfg
def save_config(cfg):
os.makedirs(os.path.dirname(AUTOCONF_HEADER), exist_ok=True)
with open(CONFIG_FILE, "w") as f_cfg, open(AUTOCONF_HEADER, "w") as f_hdr:
f_cfg.write("# Automatically generated by SUB-OS Kconfig TUI Configurator\n# Do not edit directly\n\n")
f_hdr.write("/* Automatically generated by SUB-OS Kconfig. Do not edit. */\n#ifndef _AUTOCONF_H\n#define _AUTOCONF_H\n\n")
# Write Architecture
arch = cfg.get("CONFIG_ARCH", "x86_64")
f_cfg.write(f"CONFIG_ARCH={arch}\n")
f_hdr.write(f'#define CONFIG_ARCH "{arch}"\n')
for k, v in sorted(cfg.items()):
if k == "CONFIG_ARCH":
continue
if isinstance(v, bool):
if v:
f_cfg.write(f"{k}=y\n")
f_hdr.write(f"#define {k} 1\n")
else:
f_cfg.write(f"# {k} is not set\n")
elif isinstance(v, str):
f_cfg.write(f'{k}="{v}"\n')
f_hdr.write(f'#define {k} "{v}"\n')
elif isinstance(v, int):
f_cfg.write(f"{k}={v}\n")
f_hdr.write(f"#define {k} {v}\n")
f_hdr.write("\n#endif /* _AUTOCONF_H */\n")
def run_tui(stdscr):
curses.curs_set(0)
curses.use_default_colors()
curses.init_pair(1, curses.COLOR_BLACK, curses.COLOR_CYAN) # Header / Bar
curses.init_pair(2, curses.COLOR_WHITE, curses.COLOR_BLUE) # Main background
curses.init_pair(3, curses.COLOR_YELLOW, curses.COLOR_BLUE) # Highlight title
curses.init_pair(4, curses.COLOR_BLACK, curses.COLOR_WHITE) # Selected row
curses.init_pair(5, curses.COLOR_CYAN, curses.COLOR_BLUE) # Subtext
cfg = load_config()
current_menu = MENU_STRUCTURE
menu_stack = []
cursor_stack = [0]
while True:
stdscr.bkgd(' ', curses.color_pair(2))
stdscr.clear()
max_y, max_x = stdscr.getmaxyx()
# Top Banner
header = f" SUB-OS v{cfg.get('CONFIG_SUBOS_VERSION', '0.2.0-lts')} ({cfg.get('CONFIG_ARCH', 'x86_64')}) Linux-Style Kernel Configuration "
stdscr.attron(curses.color_pair(1) | curses.A_BOLD)
stdscr.addstr(0, 0, header.center(max_x - 1)[:max_x - 1])
stdscr.attroff(curses.color_pair(1) | curses.A_BOLD)
# Subtitle
stdscr.attron(curses.color_pair(3) | curses.A_BOLD)
title_text = "Main Menu" if not menu_stack else menu_stack[-1]["title"]
stdscr.addstr(2, 4, f"-> {title_text}")
stdscr.attroff(curses.color_pair(3) | curses.A_BOLD)
# Instructions
stdscr.attron(curses.color_pair(5))
stdscr.addstr(3, 4, "Use [UP/DOWN] arrows, [SPACE] to toggle [*], [ENTER] for submenu, [S] to Save, [Q] to Exit")
stdscr.attroff(curses.color_pair(5))
# Items list
items = current_menu if not menu_stack else menu_stack[-1]["items"]
cur_idx = cursor_stack[-1]
if cur_idx >= len(items):
cur_idx = len(items) - 1
if cur_idx < 0:
cur_idx = 0
cursor_stack[-1] = cur_idx
box_top = 5
box_height = max_y - 8
for i, item in enumerate(items):
if i >= box_height:
break
y = box_top + i
is_sel = (i == cur_idx)
if "items" in item: # Submenu
display = f" ---> {item['title']}"
elif item.get("type") == "bool":
val = cfg.get(item["name"], False)
mark = "[*]" if val else "[ ]"
display = f" {mark} {item['label']}"
elif item.get("type") == "radio":
group_val = cfg.get("CONFIG_ARCH", "x86_64")
mark = "(*)" if group_val == item["val"] else "( )"
display = f" {mark} {item['label']}"
else:
display = f" {item.get('label', item.get('title', ''))}"
if is_sel:
stdscr.attron(curses.color_pair(4) | curses.A_BOLD)
stdscr.addstr(y, 4, display.ljust(max_x - 10)[:max_x - 10])
stdscr.attroff(curses.color_pair(4) | curses.A_BOLD)
else:
stdscr.attron(curses.color_pair(2))
stdscr.addstr(y, 4, display[:max_x - 10])
stdscr.attroff(curses.color_pair(2))
# Footer Status Bar
footer = " <Select> <Exit / Return> <Save Configuration> <Help> "
stdscr.attron(curses.color_pair(1))
stdscr.addstr(max_y - 1, 0, footer.center(max_x - 1)[:max_x - 1])
stdscr.attroff(curses.color_pair(1))
stdscr.refresh()
key = stdscr.getch()
if key in [curses.KEY_UP, ord('k')]:
if cursor_stack[-1] > 0:
cursor_stack[-1] -= 1
elif key in [curses.KEY_DOWN, ord('j')]:
if cursor_stack[-1] < len(items) - 1:
cursor_stack[-1] += 1
elif key in [curses.KEY_ENTER, 10, 13]:
sel_item = items[cursor_stack[-1]]
if "items" in sel_item:
menu_stack.append(sel_item)
cursor_stack.append(0)
elif sel_item.get("type") == "bool":
name = sel_item["name"]
cfg[name] = not cfg.get(name, False)
elif sel_item.get("type") == "radio":
cfg["CONFIG_ARCH"] = sel_item["val"]
if sel_item["val"] == "x86_64":
cfg["CONFIG_ARCH_X86_64"] = True
cfg["CONFIG_ARCH_AARCH64"] = False
cfg["CONFIG_ARCH_ARMV8I"] = False
elif sel_item["val"] == "aarch64":
cfg["CONFIG_ARCH_X86_64"] = False
cfg["CONFIG_ARCH_AARCH64"] = True
cfg["CONFIG_ARCH_ARMV8I"] = False
elif sel_item["val"] == "armv8i":
cfg["CONFIG_ARCH_X86_64"] = False
cfg["CONFIG_ARCH_AARCH64"] = False
cfg["CONFIG_ARCH_ARMV8I"] = True
elif key == ord(' '):
sel_item = items[cursor_stack[-1]]
if sel_item.get("type") == "bool":
name = sel_item["name"]
cfg[name] = not cfg.get(name, False)
elif sel_item.get("type") == "radio":
cfg["CONFIG_ARCH"] = sel_item["val"]
if sel_item["val"] == "x86_64":
cfg["CONFIG_ARCH_X86_64"] = True
cfg["CONFIG_ARCH_AARCH64"] = False
cfg["CONFIG_ARCH_ARMV8I"] = False
elif sel_item["val"] == "aarch64":
cfg["CONFIG_ARCH_X86_64"] = False
cfg["CONFIG_ARCH_AARCH64"] = True
cfg["CONFIG_ARCH_ARMV8I"] = False
elif sel_item["val"] == "armv8i":
cfg["CONFIG_ARCH_X86_64"] = False
cfg["CONFIG_ARCH_AARCH64"] = False
cfg["CONFIG_ARCH_ARMV8I"] = True
elif key in [ord('s'), ord('S')]:
save_config(cfg)
stdscr.attron(curses.color_pair(1) | curses.A_BOLD)
stdscr.addstr(max_y - 2, 4, f" Saved configuration to {CONFIG_FILE} and {AUTOCONF_HEADER}! Press any key... ")
stdscr.attroff(curses.color_pair(1) | curses.A_BOLD)
stdscr.refresh()
stdscr.getch()
elif key in [ord('q'), ord('Q'), 27]: # Esc or Q
if menu_stack:
menu_stack.pop()
cursor_stack.pop()
else:
save_config(cfg)
break
def defconfig(arch="x86_64"):
cfg = dict(DEFAULTS)
cfg["CONFIG_ARCH"] = arch
if arch == "x86_64":
cfg["CONFIG_ARCH_X86_64"] = True
cfg["CONFIG_ARCH_AARCH64"] = False
cfg["CONFIG_ARCH_ARMV8I"] = False
elif arch in ["aarch64", "armv8", "armv8i"]:
cfg["CONFIG_ARCH_X86_64"] = False
cfg["CONFIG_ARCH_AARCH64"] = True
cfg["CONFIG_ARCH_ARMV8I"] = (arch == "armv8i")
save_config(cfg)
print(f"*** Default configuration for '{arch}' written to {CONFIG_FILE} and {AUTOCONF_HEADER} ***")
def main():
if len(sys.argv) > 1:
cmd = sys.argv[1]
if cmd in ["--defconfig", "defconfig"]:
arch = sys.argv[2] if len(sys.argv) > 2 else "x86_64"
defconfig(arch)
return
elif cmd == "--x86_64":
defconfig("x86_64")
return
elif cmd in ["--aarch64", "--armv8", "--armv8i"]:
defconfig(cmd.lstrip("-"))
return
try:
curses.wrapper(run_tui)
print(f"*** Configuration saved to {CONFIG_FILE} and {AUTOCONF_HEADER} ***")
except KeyboardInterrupt:
pass
if __name__ == "__main__":
main()