Draft: Add script for final config generation from debian and GL

README.md

@@ -73,3 +73,63 @@ The automation creates a PR if a new patch level is available.
 
 > [!Note]
 > This is done via the [update-kernel.py](https://github.com/gardenlinux/package-linux/blob/main/update-kernel.py) tool
+
+## Config generation from debian and garden linux
+
+Script(get_config.sh) takes prepare_source as input for kernel version and generates
+
+1. Final debian kernel configuration file
+2. Garden Linux kernel configuration file
+
+### Container Image
+Script should be executed inside repo-debian-snapshot container
+```
+Image: ghcr.io/gardenlinux/repo-debian-snapshot
+```
+
+### Volume Mount
+```
+-v package-linux:/workspace: Mounts the local package-linux directory to /workspace in the container
+```
+
+### Usage Examples
+
+#### For AMD64 Architecture
+```
+podman run -v package-linux:/workspace ghcr.io/gardenlinux/repo-debian-snapshot:1764836249-amd64 /workspace/get_config.sh
+```
+#### For ARM64 Architecture
+```
+podman run -v package-linux:/workspace ghcr.io/gardenlinux/repo-debian-snapshot:1764836249-arm64 /workspace/get_config.sh
+```
+### Important Notes
+> Final config files are copied in package-linux folder
+
+> If debian_version and kernel_version is not specified , then default version from prepare_source is used.
+
+## Comparision of kernel configs
+
+Script (compare-config.py) compares 2 input config files and generates the differences in 3 sections (Added, Removed, Modified)
+
+Output needs to be manually verified
+
+### Example output
+
+```
+REMOVED:
+CONFIG_ACPI_EC_DEBUGFS=y
+CONFIG_ACPI_VIOT=y
+CONFIG_BCACHEFS_FS=m
+CONFIG_BCACHEFS_POSIX_ACL=y
+CONFIG_BCACHEFS_QUOTA=y
+CONFIG_BCACHEFS_SIX_OPTIMISTIC_SPIN=y
+
+ADDED:
+CONFIG_CC_HAS_COUNTED_BY=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
+CONFIG_DEBUG_INFO_BTF=y
+
+CHANGED:
+CONFIG_CC_VERSION_TEXT: x86_64-linux-gnu-gcc-14 (Debian 14.3.0-10) 14.3.0 -> x86_64-linux-gnu-gcc (Debian 15.2.0-9) 15.2.0
+CONFIG_GCC_VERSION: 140300 -> 150200
+```

compare-config.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+
+import sys
+
+def extract_config_values(config_path):
+    config_values = {}
+    with open(config_path, 'r') as file:
+        for line in file:
+            if not line.strip():
+                continue
+            if line.startswith('#') and line.endswith(' is not set'):
+                key = line.split()[1]
+                config_values[key] = 'n'
+                continue
+            if '=' in line:
+                key, value = line.split('=', 1)
+                config_values[key.strip()] = value.strip().strip('"')
+    return config_values
+
+def compare_configs(config1, config2):
+    print("Comparing configuration values...")
+
+    all_keys = set(config1.keys()) | set(config2.keys())
+    added = []
+    removed = []
+    changed = []
+
+    for key in sorted(all_keys):
+        val1 = config1.get(key, 'not set')
+        val2 = config2.get(key, 'not set')
+        if val1 == 'not set' and val2 != 'not set':
+            added.append(f"{key}={val2}")
+        elif val1 != 'not set' and val2 == 'not set':
+            removed.append(f"{key}={val1}")
+        elif val1 != val2:
+            changed.append(f"{key}: {val1} -> {val2}")
+    if removed:
+        print("REMOVED:")
+        for item in removed:
+            print(f"{item}")
+        print()
+    if added:
+        print("ADDED:")
+        for item in added:
+            print(f"{item}")
+        print()
+    if changed:
+        print("CHANGED:")
+        for item in changed:
+            print(f"{item}")
+
+def main():
+    if len(sys.argv) != 3:
+        print (sys.argv)
+        print("Usage: python compare.py <config1> <config2>")
+        sys.exit(1)
+    else:
+        config1 = sys.argv[1]
+        config2 = sys.argv[2]
+        config1_val = extract_config_values(config1)
+        config2_val = extract_config_values(config2)
+        compare_configs(config1_val, config2_val)
+
+
+if __name__ == "__main__":
+    main()

get_config.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+repo_dir="$(dirname "$(realpath "${BASH_SOURCE[0]}")")"
+
+get_debian_vers_from_pkg_repo() {
+    debian_version_line=$(grep -m1 'debian_ref=' "$repo_dir/prepare_source")
+    echo "${debian_version_line#*=}" | tr -d '"'
+    }
+
+get_vers_orig_from_pkg_repo() {
+    version_orig_line=$(grep -m1 'version_orig=' "$repo_dir/prepare_source")
+    echo "${version_orig_line#*=}" | tr -d '"'
+    }
+
+deb_version=$(get_debian_vers_from_pkg_repo)
+version_orig=$(get_vers_orig_from_pkg_repo)
+
+arch=$(dpkg --print-architecture 2>/dev/null)
+
+
+apt-get install -y --no-install-recommends quilt flex bison build-essential gcc-14 make fakeroot libncurses-dev kernel-wedge python3-jinja2 python3-dacite wget gpgv
+
+apt-get remove --purge sqopv -y
+
+mkdir -p /tmp
+
+cd /tmp
+
+git clone https://salsa.debian.org/kernel-team/linux.git
+cd linux
+git checkout $deb_version
+
+
+uscan -v --download-version="$version_orig"
+git clean -fdx
+
+
+mkdir /tmp/src
+
+xz -d < ../*.orig.tar.* | tar --extract --strip-components 1 --directory "/tmp/src"
+
+cp -r debian "/tmp/src/"
+
+cd /tmp/src
+
+cp $repo_dir/fixes_debian/series.patch /tmp/src/
+
+patch -p1 < series.patch
+
+export QUILT_PATCHES=debian/patches
+quilt pop -a || true
+quilt push -a
+
+fakeroot make -f debian/rules debian/control
+
+make -f debian/rules.gen setup_"$arch"_none_cloud-$arch
+make -f debian/rules.gen setup_"$arch"_none_$arch
+
+cp debian/build/build_"$arch"_none_cloud-$arch/.config $repo_dir/config_"$arch"_none_cloud-$arch
+cp debian/build/build_"$arch"_none_$arch/.config $repo_dir/config_"$arch"_none_$arch
+
+fakeroot make -f debian/rules clean
+rm -rf "debian/config"
+cp -r $repo_dir/config "debian/"
+
+fakeroot make -f debian/rules debian/control
+
+make -f debian/rules.gen setup_"$arch"_none_cloud-$arch
+make -f debian/rules.gen setup_"$arch"_none_$arch
+
+cp debian/build/build_"$arch"_none_cloud-$arch/.config $repo_dir/config_gl_"$arch"_none_cloud-$arch
+cp debian/build/build_"$arch"_none_$arch/.config $repo_dir/config_gl_"$arch"_none_$arch