Initial commit: Alpine Zero-OS initramfs build system with cleaned Docker configuration

2025-08-15 22:11:44 +02:00
commit 9b14d94bbe
34 changed files with 12864 additions and 0 deletions
--- a/scripts/install-firmware-minimal.sh
+++ b/scripts/install-firmware-minimal.sh
@@ -0,0 +1,115 @@
+#!/bin/sh
+set -e
+
+INITRAMFS_ROOT="/build/initramfs"
+FIRMWARE_DIR="$INITRAMFS_ROOT/lib/firmware"
+
+echo "[+] Installing minimal network firmware (not full 600MB package)..."
+
+# Create firmware directory
+mkdir -p "$FIRMWARE_DIR"
+
+# Install full linux-firmware temporarily to extract essentials
+echo "  Downloading linux-firmware package..."
+cd /tmp
+apk fetch linux-firmware
+tar -xf linux-firmware-*.apk
+
+# Extract only essential network firmware
+echo "  Extracting essential network drivers..."
+
+# Intel Ethernet (most common)
+if [ -d lib/firmware/intel ]; then
+    mkdir -p "$FIRMWARE_DIR/intel"
+    # e1000e, ixgbe, i40e, ice drivers
+    cp -r lib/firmware/intel/*e1000* "$FIRMWARE_DIR/intel/" 2>/dev/null || true
+    cp -r lib/firmware/intel/*ixgbe* "$FIRMWARE_DIR/intel/" 2>/dev/null || true
+    cp -r lib/firmware/intel/*i40e* "$FIRMWARE_DIR/intel/" 2>/dev/null || true
+    cp -r lib/firmware/intel/*ice* "$FIRMWARE_DIR/intel/" 2>/dev/null || true
+    echo "    Intel ethernet firmware: $(du -sh $FIRMWARE_DIR/intel 2>/dev/null | cut -f1)"
+fi
+
+# Realtek Ethernet
+if [ -d lib/firmware/rtl_nic ]; then
+    mkdir -p "$FIRMWARE_DIR/rtl_nic"
+    # r8169 driver
+    cp -r lib/firmware/rtl_nic/* "$FIRMWARE_DIR/rtl_nic/" 2>/dev/null || true
+    echo "    Realtek ethernet firmware: $(du -sh $FIRMWARE_DIR/rtl_nic 2>/dev/null | cut -f1)"
+fi
+
+# Broadcom Ethernet  
+if [ -d lib/firmware/bnx2 ]; then
+    mkdir -p "$FIRMWARE_DIR/bnx2"
+    cp -r lib/firmware/bnx2/* "$FIRMWARE_DIR/bnx2/" 2>/dev/null || true
+fi
+if [ -d lib/firmware/tigon ]; then
+    mkdir -p "$FIRMWARE_DIR/tigon"
+    cp -r lib/firmware/tigon/* "$FIRMWARE_DIR/tigon/" 2>/dev/null || true
+fi
+
+# Essential system firmware
+if [ -d lib/firmware/regulatory.db ]; then
+    cp lib/firmware/regulatory.db* "$FIRMWARE_DIR/" 2>/dev/null || true
+fi
+
+# Cleanup temporary files
+cd /build
+rm -rf /tmp/lib /tmp/linux-firmware-*
+
+# Show firmware size
+if [ -d "$FIRMWARE_DIR" ]; then
+    total_size=$(du -sh "$FIRMWARE_DIR" 2>/dev/null | cut -f1)
+    echo "[+] Essential firmware installed: $total_size (vs 600MB full package)"
+else
+    echo "[-] Warning: No firmware installed"
+fi
+
+# Install essential ethernet kernel modules
+echo "  Installing essential ethernet kernel modules..."
+KERNEL_VERSION=$(cat /build/configs/kernel-version)
+MODULES_DIR="$INITRAMFS_ROOT/lib/modules/${KERNEL_VERSION}-Zero-OS"
+mkdir -p "$MODULES_DIR/kernel/drivers/net/ethernet"
+
+# Copy essential ethernet driver modules from the built kernel
+KERNEL_BUILD_DIR="/build/kernel/linux-${KERNEL_VERSION}"
+if [ -d "$KERNEL_BUILD_DIR" ]; then
+    echo "    Copying ethernet drivers from kernel build..."
+    
+    # Intel drivers (e1000, e1000e, igb, ixgbe, i40e, ice)
+    find "$KERNEL_BUILD_DIR" -name "e1000.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/ethernet/" \; 2>/dev/null || true
+    find "$KERNEL_BUILD_DIR" -name "e1000e.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/ethernet/" \; 2>/dev/null || true
+    find "$KERNEL_BUILD_DIR" -name "igb.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/ethernet/" \; 2>/dev/null || true
+    find "$KERNEL_BUILD_DIR" -name "ixgbe.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/ethernet/" \; 2>/dev/null || true
+    find "$KERNEL_BUILD_DIR" -name "i40e.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/ethernet/" \; 2>/dev/null || true
+    find "$KERNEL_BUILD_DIR" -name "ice.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/ethernet/" \; 2>/dev/null || true
+    
+    # Realtek drivers (r8169, 8139too)
+    find "$KERNEL_BUILD_DIR" -name "r8169.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/ethernet/" \; 2>/dev/null || true
+    find "$KERNEL_BUILD_DIR" -name "8139too.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/ethernet/" \; 2>/dev/null || true
+    
+    # Broadcom drivers (bnx2, tg3, b44)
+    find "$KERNEL_BUILD_DIR" -name "bnx2.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/ethernet/" \; 2>/dev/null || true
+    find "$KERNEL_BUILD_DIR" -name "tg3.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/ethernet/" \; 2>/dev/null || true
+    find "$KERNEL_BUILD_DIR" -name "b44.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/ethernet/" \; 2>/dev/null || true
+    
+    # Common dependencies (mii, mdio)
+    find "$KERNEL_BUILD_DIR" -name "mii.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/" \; 2>/dev/null || true
+    find "$KERNEL_BUILD_DIR" -name "mdio.ko" -exec cp {} "$MODULES_DIR/kernel/drivers/net/" \; 2>/dev/null || true
+    
+    # Create modules.dep for module loading
+    if command -v depmod >/dev/null 2>&1; then
+        depmod -b "$INITRAMFS_ROOT" "${KERNEL_VERSION}-Zero-OS" 2>/dev/null || true
+    fi
+    
+    module_count=$(find "$MODULES_DIR" -name "*.ko" | wc -l)
+    echo "    Installed $module_count ethernet driver modules"
+else
+    echo "    Warning: Kernel build directory not found, modules may not be available"
+fi
+
+# Create essential kernel module directories that eudev expects
+mkdir -p "$INITRAMFS_ROOT/lib/modules"
+mkdir -p "$INITRAMFS_ROOT/sys/module"
+mkdir -p "$INITRAMFS_ROOT/dev"
+
+echo "[+] Minimal firmware and driver installation complete"