From 8f24d7d477669b7f8a1fa8e0236af5e1c8927fd3 Mon Sep 17 00:00:00 2001
From: GNU <dexterkidd@gmail.com>
Date: Mon, 18 Jul 2022 18:29:24 +0800
Subject: [PATCH] Created Compile andriod kernel for cm4 (markdown)

---
 Compile-andriod-kernel-for-cm4.md | 49 +++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 Compile-andriod-kernel-for-cm4.md

diff --git a/Compile-andriod-kernel-for-cm4.md b/Compile-andriod-kernel-for-cm4.md
new file mode 100644
index 0000000..ba184dd
--- /dev/null
+++ b/Compile-andriod-kernel-for-cm4.md
@@ -0,0 +1,49 @@
+# Download kernel source for andriod of rpi4
+
+**sync-andriod-kernel.sh**
+```
+#!/bin/bash
+
+BIN_DIR=$HOME/bin
+REPO_PATH=$BIN_DIR/repo
+
+if [ ! -d $BIN_DIR ]
+then
+    mkdir $BIN_DIR
+    add_path_env $BIN_DIR
+    curl https://storage.googleapis.com/git-repo-downloads/repo > $REPO_PATH
+    chmod a+x $REPO_PATH
+else
+    echo "folder already exits. $BIN_DIR"
+fi
+
+export PATH=$PATH:$BIN_DIR
+
+cd /data/andriod-kernel
+repo init -u https://github.com/android-rpi/kernel_manifest -b arpi-5.10
+repo sync
+
+
+```
+
+# Compile 
+```
+cd /data/andriod-kernel/
+./build/build.sh
+```
+
+# Replace files
+
+```
+sudo losetup --show -f -P lineage-19.1-20220511-UNOFFICIAL-KonstaKANG-rpi4.img # assume /dev/loop0
+sudo mount /dev/loop0p1 /mnt/p1
+
+# Copy kernel binaries to boot partition
+cp -rf /data/andriod-kernel/out/arpi-5.10/dist/Image to /mnt/p1
+cp -rf /data/andriod-kernel/out/arpi-5.10/dist/bcm2711-rpi-*.dtb /mnt/p1
+cp -rf /data/andriod-kernel/out/arpi-5.10/dist/vc4-kms-v3d-pi4.dtbo to /mnt/p1/overlays/
+
+sudo umount /mnt/p1
+sudo losetup -D /dev/loop0
+
+```