BFE Engineering
42fb386f60
Replace every em dash with real punctuation (rewrites, not hyphen swaps) in docs, code comments, scripts, configs, and the port records; convert en dashes, curly quotes, ellipsis glyphs, arrows, and section signs to ASCII; drop machine-writing tell phrases from living docs. ADR titles now use a colon. The M2 bring-up DTS model string carried an em dash into the patch series and its record echoes; fixed at both, and the full series re-verified to apply cleanly onto pristine 6.18.46. One comment in freshness.h deliberately names the em dash glyph the UI renders as the unknown mark; that is data, kept as prose naming it. Verified: cargo tests (sim, config-lint, rs485-bridge), shellcheck, both driver MC/DC harnesses, patches-apply.
194 lines
8.5 KiB
Bash
Executable File
194 lines
8.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Hermetic-ish kernel build for the WardenOS 86-Panel (RV1106).
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#
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# fetch pristine linux-6.18.46 -> apply patches/ in order -> configure with
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# build/warden_defconfig -> build zImage + rv1106-warden.dtb.
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#
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# The pristine tree is the ONLY external input; the delta is patches/. A build
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# from a clean checkout + a verified tarball is reproducible.
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#
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# Env:
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# KERNEL_TARBALL path to a local linux-6.18.46.tar.xz (skips the download)
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# SDK_TC dir holding the arm-rockchip830 uclibc cross toolchain bin/
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# CROSS_COMPILE cross-compiler prefix (default arm-rockchip830-linux-uclibcgnueabihf-;
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# CI overrides with the generic arm-linux-gnueabihf-)
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# WORK build scratch dir (default: a mktemp under $TMPDIR)
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# JOBS parallel make jobs (default: nproc)
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# WARDEN_KCONFIG_FRAGMENT
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# optional kconfig fragment merged onto warden_defconfig
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# (qemu/configs/virt.fragment builds the QEMU -M virt variant);
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# every fragment option is verified to have taken effect
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# WARDEN_CCACHE=1 compile through ccache (CI caches ~/.ccache)
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# WARDEN_MODULES_COLLECT
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# space-separated in-tree dirs whose .ko files are wanted
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# (e.g. "drivers/net/wireless/aic8800"). Runs a full
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# `make modules` (the zImage target alone generates no
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# Module.symvers, so per-dir M= builds cannot link) and
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# collects the listed dirs' modules into $WORK/modules-out.
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#
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# Requires: `python` (not python3) on PATH: the SDK quirk; the CI runner provides
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# a project-local venv. Builds are SERIAL on the shared SDK box: never run two.
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set -euo pipefail
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KVER=6.18.46
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HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" # build/
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REPO="$(cd "$HERE/.." && pwd)"
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PATCHES="$REPO/patches"
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JOBS="${JOBS:-$(nproc)}"
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# The tarball URL + sha256 pin live in fetch-kernel-tarball.sh (shared with CI).
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# A caller-provided WORK (e.g. CI's ${{ github.workspace }}/kbuild-out, from which
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# artifacts are uploaded) is left intact; a scratch dir we mktemp'd here is our own
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# (>1GB of extracted source + build output) and is removed on exit so repeated runs
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# on the shared SDK box don't fill the disk.
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if [ -n "${WORK:-}" ]; then
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WORK_OWNED=0
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else
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WORK="$(mktemp -d "${TMPDIR:-/tmp}/warden-kbuild.XXXXXX")"
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WORK_OWNED=1
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fi
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trap '[ "${WORK_OWNED:-0}" = 1 ] && rm -rf "$WORK"' EXIT
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log() { printf '\033[36m== %s\033[0m\n' "$*"; }
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command -v python >/dev/null || { echo "need 'python' (not python3) on PATH: SDK quirk" >&2; exit 1; }
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# 1. obtain + verify the pristine tarball
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mkdir -p "$WORK"
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TB="${KERNEL_TARBALL:-$WORK/linux-$KVER.tar.xz}"
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# Fetch + fail-closed sha256 verification live in ONE place shared with CI
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# (a missing pin or a mismatch always refuses to build).
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bash "$HERE/fetch-kernel-tarball.sh" "$TB"
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# 2. extract pristine
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SRC="$WORK/linux-$KVER"
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rm -rf "$SRC"
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log "extracting pristine"
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tar -C "$WORK" -xf "$TB"
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# 3. apply the patch series in order (fail loudly: never echo a lie)
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log "applying patch series"
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for p in "$PATCHES"/*.patch; do
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if git -C "$SRC" apply --whitespace=nowarn "$p" 2>/dev/null; then
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:
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elif patch -d "$SRC" -p1 --forward --no-backup-if-mismatch < "$p" >/dev/null 2>&1; then
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:
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else
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echo "FATAL: failed to apply $(basename "$p")" >&2
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exit 1
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fi
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echo " applied $(basename "$p")"
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done
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# Guard against a SILENT no-op: `git apply` run from inside another git repo's
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# subdirectory ignores out-of-subdir paths and exits 0 without applying anything
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# (issue #1). $WORK must therefore live OUTSIDE any git checkout. Assert that a known
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# product of the series actually landed on disk, so this can never masquerade as
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# success again.
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SENTINEL="$SRC/arch/arm/boot/dts/rockchip/rv1106-warden.dts"
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[ -f "$SENTINEL" ] || {
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echo "FATAL: patch series did not apply (missing $SENTINEL)." >&2
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echo " Is \$WORK inside a git repo? git apply silently ignores out-of-subdir" >&2
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echo " paths there: point WORK at a dir outside any checkout (e.g. \$RUNNER_TEMP)." >&2
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exit 1
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}
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log "patch series applied ($(basename "$SENTINEL") present)"
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# 4. configure
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log "configuring (warden_defconfig)"
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cp "$HERE/warden_defconfig" "$SRC/.config"
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# Optional kconfig fragment overlay (e.g. qemu/configs/virt.fragment for the
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# QEMU -M virt device-sim variant). Fail closed if set but unreadable: never
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# silently build the wrong kernel. Unset => the canonical RV1106 build,
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# byte-identical to a build without this hook.
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if [ -n "${WARDEN_KCONFIG_FRAGMENT:-}" ]; then
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[ -f "$WARDEN_KCONFIG_FRAGMENT" ] || {
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echo "FATAL: WARDEN_KCONFIG_FRAGMENT set but not a file: $WARDEN_KCONFIG_FRAGMENT" >&2
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exit 1
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}
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FRAG="$(cd "$(dirname "$WARDEN_KCONFIG_FRAGMENT")" && pwd)/$(basename "$WARDEN_KCONFIG_FRAGMENT")"
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log "merging kconfig fragment $(basename "$FRAG")"
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( cd "$SRC" && ARCH=arm ./scripts/kconfig/merge_config.sh -m .config "$FRAG" )
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fi
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# CROSS_COMPILE defaults to the Luckfox SDK uclibc prefix (set SDK_TC to its bin/),
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# but the kernel is freestanding, so a caller may override with a generic arm cross
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# toolchain instead: e.g. CROSS_COMPILE=arm-linux-gnueabihf- (in Debian's
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# gcc-arm-linux-gnueabihf), which the CI runner already has on PATH.
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export ARCH=arm
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export CROSS_COMPILE="${CROSS_COMPILE:-arm-rockchip830-linux-uclibcgnueabihf-}"
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if [ -n "${SDK_TC:-}" ]; then export PATH="$SDK_TC:$PATH"; fi
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command -v "${CROSS_COMPILE}gcc" >/dev/null \
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|| { echo "cross toolchain ${CROSS_COMPILE}gcc not on PATH (set SDK_TC, or CROSS_COMPILE to one that is)" >&2; exit 1; }
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make -C "$SRC" ARCH=arm CROSS_COMPILE="$CROSS_COMPILE" olddefconfig >/dev/null
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# Fragment took-effect assertion: merge_config -m only pastes text, and
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# olddefconfig silently resolves any symbol whose dependencies are unmet:
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# a fragment option could be dropped without a word. Verify every explicit
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# request in the fragment survived into the final .config; fail loud if not.
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if [ -n "${WARDEN_KCONFIG_FRAGMENT:-}" ]; then
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frag_fail=0
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while IFS= read -r line || [ -n "$line" ]; do
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case "$line" in
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CONFIG_*=*)
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grep -qxF "$line" "$SRC/.config" || {
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echo "FATAL: fragment option '$line' did not take effect (unmet Kconfig dependency?)" >&2
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frag_fail=1
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} ;;
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"# CONFIG_"*" is not set")
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# A disable succeeded if the symbol is NOT set: Kconfig writes either
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# the literal "is not set" line or (when dependencies gate the symbol
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# out) nothing at all: both are valid outcomes. Only "still =value"
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# is a failed disable. (A typo'd symbol disables nothing and is
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# harmless by construction.)
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opt="${line#\# }"; opt="${opt% is not set}"
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grep -qE "^$opt=" "$SRC/.config" && {
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echo "FATAL: fragment disabled '$opt' but it is still set in the final .config" >&2
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frag_fail=1
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} ;;
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esac
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done < "$FRAG"
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[ "$frag_fail" = 0 ] || exit 1
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log "fragment options verified in final .config"
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fi
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# Optional ccache (CI: cache ~/.ccache across dispatches; harmless if unset).
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KCC="${CROSS_COMPILE}gcc"
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if [ "${WARDEN_CCACHE:-0}" = 1 ]; then
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command -v ccache >/dev/null || { echo "FATAL: WARDEN_CCACHE=1 but ccache not installed" >&2; exit 1; }
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KCC="ccache ${CROSS_COMPILE}gcc"
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fi
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# 5. build zImage + the board dtb
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log "building zImage + rv1106-warden.dtb (-j$JOBS)"
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make -C "$SRC" ARCH=arm CROSS_COMPILE="$CROSS_COMPILE" CC="$KCC" -j"$JOBS" \
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zImage rockchip/rv1106-warden.dtb
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# Optional module set (issue #4: the panel loaded a stale 5.10 .ko because
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# this build never produced matched 6.18 modules). Full `make modules` is
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# required: zImage alone emits no Module.symvers, so a per-directory M=
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# build cannot resolve even core symbols. FAILS CLOSED if a listed dir
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# yields no modules.
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if [ -n "${WARDEN_MODULES_COLLECT:-}" ]; then
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MODOUT="$WORK/modules-out"
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rm -rf "$MODOUT"; mkdir -p "$MODOUT"
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log "building modules (full set: needed for Module.symvers)"
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make -C "$SRC" ARCH=arm CROSS_COMPILE="$CROSS_COMPILE" CC="$KCC" -j"$JOBS" modules
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for d in $WARDEN_MODULES_COLLECT; do
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[ -d "$SRC/$d" ] || { echo "FATAL: WARDEN_MODULES_COLLECT dir '$d' not in tree" >&2; exit 1; }
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n=0
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while IFS= read -r ko; do
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cp "$ko" "$MODOUT/"; n=$((n + 1))
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done < <(find "$SRC/$d" -name '*.ko')
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[ "$n" -gt 0 ] || { echo "FATAL: no .ko produced under '$d'" >&2; exit 1; }
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log "collected $n module(s) from $d"
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done
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ls -la "$MODOUT"
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fi
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Z="$SRC/arch/arm/boot/zImage"
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D="$SRC/arch/arm/boot/dts/rockchip/rv1106-warden.dtb"
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log "build OK"
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ls -la "$Z" "$D"
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echo "zImage: $Z"
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echo "dtb: $D"
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