add carrier, bios, sym, readme

Softwares/BIOS/Carrier-Boards/Mini-Carrier/README.md

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+*This mini carrier board was developed alongside the LattePanda Mu Ultra compute module (based on the Intel Lunar Lake processor). The carrier board is code-named Lunar Lake IO Board, or LIO for short, which is the origin of the "LIO" suffix in the BIOS name.*
+
+**These BIOS firmwares enable the LattePanda Mu N100 / N305 compute module to be compatible with the DFR1293 Mini Carrier Board.**
+
+💡**Note:** The LattePanda Mu compute module is available in 8GB and 16GB memory versions. It is essential to select the correct BIOS firmware as described below.
+
+- For LattePanda Mu N100 **8GB** RAM Model:
+
+    - S70NC1R200-8G-B-LIO-001
+
+- For LattePanda Mu N100 / N305 **16GB** RAM Model:
+
+    - S70NC1R200-16G-B-LIO-001
+
+---
+
+# BIOS Release Notes
+
+## [2026-07] Initial Release
+### 📂 BIOS Files
+| Compatible Model | Filename | Build Date |
+| :--- | :--- | ---- |
+| LattePanda Mu N100 **8GB** | `S70NC1R200-8G-B-LIO-001.bin` | 2026/07/30 |
+| LattePanda Mu N100 / N305 **16GB** | `S70NC1R200-16G-B-LIO-001.bin` | 2026/07/30 |
+
+
+### 📝 Changelog
+- Initial BIOS firmware release: Based on `S70NC1R200-8G-B`, enabling the LattePanda Mu compute module to be compatible with the DFR1293 Mini Carrier Board.
+
+---
+
+## Interface Configuration
+
+### Special Notes
+
+- **USB2_P5**: Dedicated for USB Type-C, must be used in conjunction with a PD controller, **cannot be used as a standard USB port**.
+- **USB2_P6**: Dedicated for USB Type-C, must be used in conjunction with a PD controller, **cannot be used as a standard USB port**.
+
+### HSIO (High-Speed Input/Output)
+
+- **HSIO0**: USB 3.2 10Gbps
+- **HSIO1**: USB 3.2 10Gbps
+- **HSIO2**: PCIe 3.0 x1
+- **HSIO3**: PCIe 3.0 x1
+- ==========
+- **HSIO8**: PCIe 3.0 x4 (Lane 0)
+- **HSIO9**: PCIe 3.0 x4 (Lane 1)
+- **HSIO10**: PCIe 3.0 x4 (Lane 2)
+- **HSIO11**: PCIe 3.0 x4 (Lane 3)
+- ==========
+- **HSIO6**: PCIe 3.0 x1
+
+### DDI/TCP
+
+- **DDIA**: eDP 1.4b (eDP interface on LattePanda Mu)
+
+- **DDIB**: HDMI 2.0
+
+- **TCP0**: USB Type-C (requires external PD controller)
+
+- **TCP1**: USB Type-C (requires external PD controller)
+
+### GPIOs
+
+- **I2C1**: Touch panel (touch connector on LattePanda Mu)
+- **I2C2**: Communication with Type-C PD controller
+- **GPP_D1**: Communication interrupt with Type-C PD controller
+- **GPP_E0**: Communication interrupt with Type-C PD controller
+- **GPP_D3**: Output blink signal in sleep state
+
+Other GPIOs not listed are not allocated specific functions.

Softwares/BIOS/Carrier-Boards/README.md

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+# Carrier Board BIOS
+
+This repository provides BIOS firmware specifically adapted for specific carrier boards.
+
+- **[DFR1293] Mini-Carrier**
+    - Make the LattePanda Mu compatible with the Mini Carrier.
+    - The LattePanda Mu Ultra’s default firmware already works perfectly.