# License Compliance Documentation

**Document ID:** LIC-COMP-001  
**Date:** 2026-03-01  
**Scope:** Complete license analysis for TQMa6UL Yocto Scarthgap BSP

---

## Overview

This document provides templates and procedures for generating the license compliance table required for software approval.

## License Categories

### Approved for Military Use (Generally)

| License | SPDX ID | Military Use | Notes |
|---------|---------|--------------|-------|
| MIT | MIT | ✅ Yes | Permissive, no restrictions |
| BSD-2-Clause | BSD-2-Clause | ✅ Yes | Permissive |
| BSD-3-Clause | BSD-3-Clause | ✅ Yes | Permissive |
| Apache-2.0 | Apache-2.0 | ✅ Yes | Patent grant included |
| ISC | ISC | ✅ Yes | Permissive |

### Copyleft (Requires Source Distribution)

| License | SPDX ID | Military Use | Notes |
|---------|---------|--------------|-------|
| GPL-2.0-only | GPL-2.0-only | ✅ Yes* | *Must provide source code |
| GPL-2.0-or-later | GPL-2.0-or-later | ✅ Yes* | *Must provide source code |
| GPL-3.0-only | GPL-3.0-only | ⚠️ Review | Check anti-tivoization clause |
| GPL-3.0-or-later | GPL-3.0-or-later | ⚠️ Review | Check anti-tivoization clause |
| LGPL-2.1-only | LGPL-2.1-only | ✅ Yes* | *Must provide library source |
| LGPL-2.1-or-later | LGPL-2.1-or-later | ✅ Yes* | *Must provide library source |

### Special Cases

| License | Military Use | Reason |
|---------|--------------|--------|
| Proprietary | ❌ No | Closed source, not auditable |
| CC-BY-SA | ✅ Yes | Documentation license |
| OpenSSL | ✅ Yes | Special license, acceptable |

## License Table Template

Download as CSV: [license-table-template.csv](license-table-template.csv)

| Package Name | Version | License (SPDX) | License File | Source Location | Military Use | Notes |
|--------------|---------|----------------|--------------|-----------------|--------------|-------|
| linux-yocto | 6.6.y | GPL-2.0-only | COPYING | sources/poky-scarthgap/meta/recipes-kernel/linux/ | ✅ Yes | Kernel with 2038 support |
| glibc | 2.38+ | LGPL-2.1-or-later | LICENSES | sources/poky-scarthgap/meta/recipes-core/glibc/ | ✅ Yes | 64-bit time_t |
| busybox | 1.36.x | GPL-2.0-only | LICENSE | sources/poky-scarthgap/meta/recipes-core/busybox/ | ✅ Yes | Core utilities |
| u-boot-tq | 2023.10 | GPL-2.0-or-later | Licenses/ | sources/meta-tq/recipes-bsp/u-boot/ | ✅ Yes | Bootloader |
| [Additional packages] | | | | | | |

## Generating the Complete Table

### Method 1: Yocto Built-in

```bash
# After successful build
cd ${MIRROR_BASE}/build

# Generate license manifest
bitbake core-image-minimal -c do_populate_lic

# Find license files
find tmp/deploy/licenses -name "license.manifest" -o -name "image_license.manifest"

# Copy for analysis
cp -r tmp/deploy/licenses ${MIRROR_BASE}/licenses/
```

### Method 2: Script-Based Extraction

```bash
#!/bin/bash
# generate-license-table.sh

OUTPUT="license-table.csv"
echo "Package,Version,License,Source,MilitaryUse" > $OUTPUT

cd ${MIRROR_BASE}/build/tmp/deploy/licenses
grep -r "LICENSE:" . | while read line; do
    pkg=$(echo $line | cut -d: -f2)
    lic=$(echo $line | cut -d: -f3)
    # Add logic to determine military use
    echo "$pkg,,$lic,,TBD" >> $OUTPUT
done
```

## Manual Review Required

### Packages to Flag for Review

1. **Firmware blobs** (WiFi, GPU, VPU)
   - Location: `linux-firmware`, `firmware-imx`
   - Often proprietary licenses
   - May require separate approval

2. **Cryptographic software**
   - OpenSSL, gnutls
   - Check export control classifications

3. **Graphics drivers**
   - Vivante GPU drivers (imx-gpu-viv)
   - Proprietary binary blobs

4. **Documentation**
   - CC-BY-SA licensed manuals
   - Generally acceptable

## Military Use Approval Criteria

### Automatic Approval
- MIT, BSD, Apache-2.0: ✅ No restrictions
- GPL/LGPL: ✅ With source code provision

### Requires Legal Review
- GPL-3.0 with anti-tivoization
- Any proprietary license
- Custom/TQ-specific licenses

### Automatic Rejection
- No license information
- Proprietary binary-only
- Export-controlled encryption (without clearance)

## Example Package Analysis

### Linux Kernel (linux-yocto)
- **License:** GPL-2.0-only
- **Military Use:** ✅ Yes
- **Requirement:** Must provide complete kernel source
- **Status:** Source included in mirror

### glibc
- **License:** LGPL-2.1-or-later
- **Military Use:** ✅ Yes  
- **Requirement:** Must provide library source
- **Status:** Source included in mirror

### imx-gpu-viv (Graphics Driver)
- **License:** Proprietary (NXP SLA)
- **Military Use:** ⚠️ Review Required
- **Action:** Check NXP license terms for military use
- **Alternative:** Use open-source etnaviv driver (if available)

## Deliverables for Approval

1. **Complete License Table** (CSV format)
2. **Source Code Archive** (full mirror)
3. **License Texts** (all unique licenses)
4. **Compliance Statement** (document)

---

**Author:** Siggi ⚙️  
**Date:** 2026-03-01  
**Classification:** Internal Use