Galaxy-Book4-Edge-linux

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Galaxy-Book4-Edge-linux

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Linux kernel driver and reverse engineering tools for the Samsung Galaxy Book4 Edge.

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# Samsung Galaxy Book4 Edge — Linux Research & Support

[![License: GPL v2](https://img.shields.io/badge/License-GPL%20v2-blue.svg)](https://raw.githubusercontent.com/Saddytech/Galaxy-Book4-Edge-linux/main/LICENSE)
[![Platform: Snapdragon X Elite](https://img.shields.io/badge/Platform-Snapdragon%20X%20Elite-orange.svg)](https://www.qualcomm.com/products/mobile/snapdragon/pc-processors/snapdragon-x-elite)
[![Status: Experimental](https://img.shields.io/badge/Status-Experimental-red.svg)](https://raw.githubusercontent.com/Saddytech/Galaxy-Book4-Edge-linux/main/)

This repository serves as the central hub for the reverse-engineering efforts and Linux hardware support for the **Samsung Galaxy Book4 Edge** (14" and 16" models).

By reverse-engineering the **ENE KB9058 Embedded Controller (EC)** and the **SABI v4 protocol**, we have enabled critical features like battery reporting, thermal management, and reliable booting on this bleeding-edge ARM64 platform.

📺 **[Watch the full journey on YouTube](https://youtu.be/V2DxY_PqLBg)**

---

## 📊 Hardware Support Status

---

## 🚀 Quick Start

### 1. Using Pre-built "Bootkits" (ISOs)
The easiest way to get started is by using our pre-patched Ubuntu ISOs, which include all the drivers and configurations documented here.
*   **[Download Latest Release](../../releases)**
*   **Note:** These images are provided as research snapshots.

### 2. Manual Driver Installation
If you are already running Linux on your Book4 Edge, you can install the battery driver manually:
```bash
cd driver
make
sudo make install
sudo systemctl enable --now samsung-galaxybook-battery.service
```

---

## 📂 Repository Organization

*   **[`driver/`](./driver/)**: The core `samsung_galaxybook_battery` kernel module (GPL v2).
*   **[`tools/`](./tools/)**: Python scripts for EC communication, fan control, and stress testing.
*   **[`docs/`](./docs/)**: 
    *   **[`journey/`](./docs/journey/)**: Deep-dive reverse engineering notes (Ghidra, DSDT, I2C).
    *   **[`timeline/`](./docs/timeline/)**: A day-by-day account of the project's breakthroughs and pivots.

---

## 🛠️ Technical Achievements

*   **ENE KB9058 RE**: Documented the I2C Mailbox wire protocol for the first time.
*   **Battery Driver**: A from-scratch implementation speaking directly to the EC to bypass broken ACPI methods.
*   **PXE Boot Infrastructure**: Custom network-boot setup to iterate kernels without relying on fragile USB-C controllers.

---

## ❤️ Credits & Acknowledgements

This project stands on the shoulders of the open-source community working on Snapdragon X Elite support:

*   **Max ([zensanp](https://github.com/zensanp/linux-book4-edge))**: Base kernel fork and Device Trees.
*   **[moolwalk](https://github.com/moolwalk) (Jesse Ahn)**: Critical display patches and 16" SKU hardware fixes.
*   **[jglathe](https://github.com/jglathe/linux_ms_dev_kit)**: Pre-built Ubuntu images used for initial booting.
*   **Joshua Grisham ([samsung-galaxybook-extras](https://github.com/joshuagrisham/samsung-galaxybook-extras))**: SABI protocol research.
*   **[icecream95](https://github.com/icecream95/xle-ec-tool)** & **[Maccraft123](https://github.com/Maccraft123/it8987-qcom-tool)**: EC research tools foundation.
*   **Wesley Cheng**: Initial X1 Elite kernel work.

---

## ⚖️ Disclaimer & License

**Disclaimer:** This software is experimental. It interacts with low-level hardware (EC, Power Management). Use at your own risk. We are not responsible for bricked devices or hardware damage.

*   **Drivers**: GPL v2
*   **Tools/Docs**: Provided for research purposes under MIT license where applicable.

*Developed with passion by **SaddyTech***

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