rl: New build system, arm64 support

1 files changed, 51 insertions, 0 deletions

diff --git a/rushmore-linux/rl-build-kernel.sh b/rushmore-linux/rl-build-kernel.sh
new file mode 100755
index 0000000..b7b38ce
--- /dev/null
+++ b/rushmore-linux/rl-build-kernel.sh
@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+DIR="$(cd "$(dirname "$0")" && pwd)"
+
+KERNEL_VER="6.19"
+KERNEL_URL="https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-$KERNEL_VER.tar.xz"
+KERNEL_TAR="linux-$KERNEL_VER.tar.xz"
+KERNEL_SRC="$DIR/linux-$KERNEL_VER"
+KERNEL_OUT="$DIR/out/kernel"
+KERNEL_CFG="$KERNEL_SRC/scripts/config"
+
+mkdir -p "$KERNEL_OUT"
+
+# If no kernel sources are found, grab the release tarball
+if [ ! -d "$KERNEL_SRC" ]; then
+    echo "Kernel sources not found. Downloading a release tarball in 3 seconds..."
+    sleep 3
+    echo "Downloading $KERNEL_URL..."
+    curl -L -o "$DIR/$KERNEL_TAR" "$KERNEL_URL"
+    echo "Extracting - this can take a little bit..."
+    tar -xf "$KERNEL_TAR" -C "$DIR"
+    rm "$DIR/$KERNEL_TAR"
+
+    echo "Generating default kernel config..."
+    make -C "$KERNEL_SRC" O="$KERNEL_OUT" defconfig
+fi
+
+echo "Setting kernel config options..."
+
+kenable() { "$KERNEL_CFG" --file "$KERNEL_OUT/.config" --enable "$1"; }
+
+kenable DRM
+kenable DRM_FBDEV_EMULATION
+kenable DRM_VIRTIO_GPU
+
+kenable FB
+kenable FB_VESA
+
+kenable FRAMEBUFFER_CONSOLE
+
+echo "Resolving config dependencies..."
+make -C "$KERNEL_SRC" O="$KERNEL_OUT" olddefconfig
+
+echo "Building with $(nproc) threads in 3 seconds..."
+sleep 3
+make -C "$KERNEL_SRC" O="$KERNEL_OUT" -j "$(nproc)"
+
+echo "Exporting kernel headers..."
+make -C "$KERNEL_SRC" O="$KERNEL_OUT" -j "$(nproc)" \
+    headers_install INSTALL_HDR_PATH="$DIR/out/sysroot/usr"