BFE EngineeringandClaude Opus 4.8
5e1b02ba60
The kernel-build job set WORK inside the repo checkout, so build-kernel.sh's
`git apply` ran from a subdirectory of the warden-sdk git repo — where git apply
silently ignores out-of-subdir paths and exits 0 without applying anything. The
build then failed at the (never-created) rv1106-warden.dtb target, and the
unconditional `echo "applied"` had masked it.
- ci.yml: WORK -> ${{ runner.temp }}/kbuild-out (outside the checkout); artifact
paths follow.
- build-kernel.sh: the patch loop now fails loudly instead of echoing on silent
failure, and a post-apply sentinel assert (rv1106-warden.dts must exist) makes a
silent no-op impossible to ship — the regression guard for this class.
Refs #1.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017wB8KB3MMQztRDXCMCkPrf
122 lines
4.9 KiB
Bash
Executable File
122 lines
4.9 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# Hermetic-ish kernel build for the WardenOS 86-Panel (RV1106).
|
|
#
|
|
# fetch pristine linux-6.18.46 -> apply patches/ in order -> configure with
|
|
# build/warden_defconfig -> build zImage + rv1106-warden.dtb.
|
|
#
|
|
# The pristine tree is the ONLY external input; the delta is patches/. A build
|
|
# from a clean checkout + a verified tarball is reproducible.
|
|
#
|
|
# Env:
|
|
# KERNEL_TARBALL path to a local linux-6.18.46.tar.xz (skips the download)
|
|
# SDK_TC dir holding the arm-rockchip830 uclibc cross toolchain bin/
|
|
# WORK build scratch dir (default: a mktemp under $TMPDIR)
|
|
# JOBS parallel make jobs (default: nproc)
|
|
#
|
|
# Requires: `python` (not python3) on PATH — the SDK quirk; the CI runner provides
|
|
# a project-local venv. Builds are SERIAL on the shared SDK box — never run two.
|
|
set -euo pipefail
|
|
|
|
KVER=6.18.46
|
|
HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" # build/
|
|
REPO="$(cd "$HERE/.." && pwd)"
|
|
PATCHES="$REPO/patches"
|
|
SHA_FILE="$HERE/linux-$KVER.tar.xz.sha256"
|
|
JOBS="${JOBS:-$(nproc)}"
|
|
URL="https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-$KVER.tar.xz"
|
|
|
|
# A caller-provided WORK (e.g. CI's ${{ github.workspace }}/kbuild-out, from which
|
|
# artifacts are uploaded) is left intact; a scratch dir we mktemp'd here is our own
|
|
# (>1GB of extracted source + build output) and is removed on exit so repeated runs
|
|
# on the shared SDK box don't fill the disk.
|
|
if [ -n "${WORK:-}" ]; then
|
|
WORK_OWNED=0
|
|
else
|
|
WORK="$(mktemp -d "${TMPDIR:-/tmp}/warden-kbuild.XXXXXX")"
|
|
WORK_OWNED=1
|
|
fi
|
|
trap '[ "${WORK_OWNED:-0}" = 1 ] && rm -rf "$WORK"' EXIT
|
|
|
|
log() { printf '\033[36m== %s\033[0m\n' "$*"; }
|
|
|
|
command -v python >/dev/null || { echo "need 'python' (not python3) on PATH — SDK quirk" >&2; exit 1; }
|
|
|
|
# 1. obtain + verify the pristine tarball
|
|
mkdir -p "$WORK"
|
|
TB="${KERNEL_TARBALL:-$WORK/linux-$KVER.tar.xz}"
|
|
if [ ! -f "$TB" ]; then
|
|
log "downloading $URL"
|
|
curl -fSL "$URL" -o "$TB"
|
|
fi
|
|
# Fail closed: a missing pin (e.g. forgotten on a KVER bump) or a KERNEL_TARBALL
|
|
# pointed at an arbitrary file must refuse to build, never silently skip the check
|
|
# — the pristine tarball is the ONLY external input and integrity is the whole point.
|
|
[ -f "$SHA_FILE" ] || {
|
|
echo "FATAL: no pinned sha256 for linux-$KVER (expected $SHA_FILE) — refusing to build from an unverified tarball" >&2
|
|
exit 1
|
|
}
|
|
want="$(cat "$SHA_FILE")"
|
|
got="$(sha256sum "$TB" | awk '{print $1}')"
|
|
[ "$want" = "$got" ] || { echo "tarball sha256 mismatch: want $want got $got" >&2; exit 1; }
|
|
log "tarball sha256 verified"
|
|
|
|
# 2. extract pristine
|
|
SRC="$WORK/linux-$KVER"
|
|
rm -rf "$SRC"
|
|
log "extracting pristine"
|
|
tar -C "$WORK" -xf "$TB"
|
|
|
|
# 3. apply the patch series in order (fail loudly — never echo a lie)
|
|
log "applying patch series"
|
|
for p in "$PATCHES"/*.patch; do
|
|
if git -C "$SRC" apply --whitespace=nowarn "$p" 2>/dev/null; then
|
|
:
|
|
elif patch -d "$SRC" -p1 --forward --no-backup-if-mismatch < "$p" >/dev/null 2>&1; then
|
|
:
|
|
else
|
|
echo "FATAL: failed to apply $(basename "$p")" >&2
|
|
exit 1
|
|
fi
|
|
echo " applied $(basename "$p")"
|
|
done
|
|
|
|
# Guard against a SILENT no-op: `git apply` run from inside another git repo's
|
|
# subdirectory ignores out-of-subdir paths and exits 0 without applying anything
|
|
# (issue #1). $WORK must therefore live OUTSIDE any git checkout. Assert that a known
|
|
# product of the series actually landed on disk, so this can never masquerade as
|
|
# success again.
|
|
SENTINEL="$SRC/arch/arm/boot/dts/rockchip/rv1106-warden.dts"
|
|
[ -f "$SENTINEL" ] || {
|
|
echo "FATAL: patch series did not apply (missing $SENTINEL)." >&2
|
|
echo " Is \$WORK inside a git repo? git apply silently ignores out-of-subdir" >&2
|
|
echo " paths there — point WORK at a dir outside any checkout (e.g. \$RUNNER_TEMP)." >&2
|
|
exit 1
|
|
}
|
|
log "patch series applied ($(basename "$SENTINEL") present)"
|
|
|
|
# 4. configure
|
|
log "configuring (warden_defconfig)"
|
|
cp "$HERE/warden_defconfig" "$SRC/.config"
|
|
# CROSS_COMPILE defaults to the Luckfox SDK uclibc prefix (set SDK_TC to its bin/),
|
|
# but the kernel is freestanding, so a caller may override with a generic arm cross
|
|
# toolchain instead — e.g. CROSS_COMPILE=arm-linux-gnueabihf- (in Debian's
|
|
# gcc-arm-linux-gnueabihf), which the CI runner already has on PATH.
|
|
export ARCH=arm
|
|
export CROSS_COMPILE="${CROSS_COMPILE:-arm-rockchip830-linux-uclibcgnueabihf-}"
|
|
if [ -n "${SDK_TC:-}" ]; then export PATH="$SDK_TC:$PATH"; fi
|
|
command -v "${CROSS_COMPILE}gcc" >/dev/null \
|
|
|| { echo "cross toolchain ${CROSS_COMPILE}gcc not on PATH (set SDK_TC, or CROSS_COMPILE to one that is)" >&2; exit 1; }
|
|
make -C "$SRC" ARCH=arm CROSS_COMPILE="$CROSS_COMPILE" olddefconfig >/dev/null
|
|
|
|
# 5. build zImage + the board dtb
|
|
log "building zImage + rv1106-warden.dtb (-j$JOBS)"
|
|
make -C "$SRC" ARCH=arm CROSS_COMPILE="$CROSS_COMPILE" -j"$JOBS" \
|
|
zImage rockchip/rv1106-warden.dtb
|
|
|
|
Z="$SRC/arch/arm/boot/zImage"
|
|
D="$SRC/arch/arm/boot/dts/rockchip/rv1106-warden.dtb"
|
|
log "build OK"
|
|
ls -la "$Z" "$D"
|
|
echo "zImage: $Z"
|
|
echo "dtb: $D"
|