108 lines
2.5 KiB
Bash
Executable File
108 lines
2.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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# Stage a subset of kernel modules into a target rootfs/initramfs tree.
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#
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# Example:
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# ./stage-initramfs-modules.sh \
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# /out/rootfs/lib/modules/6.18.2 \
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# /out/initramfs
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#
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# Result:
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# /out/initramfs/lib/modules/6.18.2/...
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#
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# Notes:
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# - This copies selected directories and modules.* metadata.
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# - It does NOT run depmod for you unless you uncomment that section.
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# - Best run after kernel modules have already been installed into the source tree.
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if [[ $# -ne 2 ]]; then
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echo "Usage: $0 <source-lib-modules-version-dir> <dest-root>"
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echo "Example: $0 /out/rootfs/lib/modules/6.18.2 /out/initramfs"
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exit 1
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fi
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SRC_MODDIR="$1" # e.g. /out/rootfs/lib/modules/6.18.2
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DEST_ROOT="$2" # e.g. /out/initramfs
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if [[ ! -d "$SRC_MODDIR" ]]; then
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echo "Source module dir does not exist: $SRC_MODDIR" >&2
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exit 1
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fi
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KVER="$(basename "$SRC_MODDIR")"
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DEST_MODDIR="$DEST_ROOT/lib/modules/$KVER"
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mkdir -p "$DEST_MODDIR"
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echo "==> Source: $SRC_MODDIR"
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echo "==> Dest: $DEST_MODDIR"
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echo
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# Relative paths under /lib/modules/<version>
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PATHS=(
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# Metadata files used by modprobe/depmod.
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"modules.builtin"
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"modules.builtin.modinfo"
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"modules.order"
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"modules.dep"
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"modules.dep.bin"
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"modules.alias"
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"modules.alias.bin"
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"modules.symbols"
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"modules.symbols.bin"
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"modules.softdep"
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# Core module dirs we may need.
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"kernel/drivers/pwm"
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"kernel/drivers/hwmon"
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"kernel/drivers/thermal"
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# Optional
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# "kernel/drivers/i2c"
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# "kernel/drivers/gpio"
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# "kernel/drivers/base"
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# "kernel/drivers/power"
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# "kernel/drivers/platform"
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)
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copy_one() {
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local rel="$1"
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local src="$SRC_MODDIR/$rel"
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local dst="$DEST_MODDIR/$rel"
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if [[ -d "$src" ]]; then
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echo "[DIR ] $rel"
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mkdir -p "$(dirname "$dst")"
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cp -a "$src" "$dst"
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elif [[ -f "$src" ]]; then
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echo "[FILE] $rel"
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mkdir -p "$(dirname "$dst")"
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cp -a "$src" "$dst"
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else
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echo "[MISS] $rel"
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fi
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}
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for rel in "${PATHS[@]}"; do
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copy_one "$rel"
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done
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echo
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echo "==> Done staging selected modules."
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# Optional: show what got copied
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echo
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echo "==> Staged files summary:"
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find "$DEST_MODDIR" -type f | sed "s#^$DEST_ROOT/##" | sort
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# Optional: if depmod exists INSIDE the build environment and you want to
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# regenerate metadata for the destination tree, uncomment this block.
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#
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# if command -v depmod >/dev/null 2>&1; then
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# echo
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# echo "==> Running depmod for destination tree..."
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# depmod -b "$DEST_ROOT" "$KVER"
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# fi
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