Update README.md

README.md

@@ -5,6 +5,37 @@ Kernel source tree for AvaotaSBC-provided kernel builds.
 ## Kernel Branches
 - [Linux 5.15](https://github.com/AvaotaSBC/linux/tree/linux-5.15)
 
+## AutoCI Branch Update
+
+In the Kernel repo, we use Github Action to release kernel source code, and provide latest update of kernel
+
+This GitHub Actions workflow aims to merge different versions of the Linux kernel under specific conditions—either when code is pushed to the main branch or when a pull_request is created with the target branch being main.
+
+Here's a breakdown of its purpose:
+
+When the triggering conditions are met, the workflow starts executing.
+It runs on the latest version of Ubuntu.
+It uses the actions/checkout@v3 action to fetch the latest version of the code repository.
+Git username and email are set to "GitHub Actions" and "[email protected]" respectively.
+The init.sh script is executed to merge version 5.15 of the Linux kernel. This script requires parameters specifying the URL for downloading the kernel, the patch file, version number, and branch name.
+The ad-m/github-push-action@master action is utilized to push the merged code to a branch named linux-5.15, with the specified directory being kernel/dst/linux-5.15/linux-5.15.
+In summary, this workflow automates the merging of specified versions of the Linux kernel and pushes the merged code to the corresponding branch, facilitating automated code management and updates.
+
+## How to use init.sh
+
+This shell script `init.sh` performs several tasks related to managing Linux kernel source code:
+
+1. It initializes various variables such as `HOST_ARCH`, `ROOT_PATH`, `DATE`, `PATCH_PATH`, and `TARBALL`.
+2. It sets default parameters using the `default_param` function and parses command-line arguments using the `parseargs` function.
+3. It displays the system architecture on which the script is running.
+4. It creates a directory for the specified kernel version and downloads the corresponding kernel source code from the provided URL.
+5. It unarchives the downloaded kernel source code and copies BSP (Board Support Package) files into the kernel directory.
+6. It applies patches to the kernel source code.
+7. It clones an old version of the kernel from a Git repository and merges it with the newly downloaded kernel.
+8. Finally, it commits the changes to the Git repository with a message containing the current date and "Kernel update".
+
+Overall, this script automates the process of downloading, patching, and merging Linux kernel source code for development or customization purposes.
+
 ```
 Usage: init [OPTIONS]
 Build Kernel repo.