3. Foundational Components

• 3.1. U-Boot
  • 3.1.1. User’s Guide
    • 3.1.1.1. USB Device Firmware Upgrade (DFU)
      • 3.1.1.1.1. USB Peripheral boot mode (SPL-DFU support)
    • 3.1.1.2. Network (Wired or USB Client)
      • 3.1.1.2.1. Booting U-Boot from the network
      • 3.1.1.2.2. Multiple Interfaces
      • 3.1.1.2.3. Network configuration via DHCP
      • 3.1.1.2.4. Manual network configuration
      • 3.1.1.2.5. Disabling Gigabit Phy Advertising
      • 3.1.1.2.6. Booting Linux from the network
      • 3.1.1.2.7. Sample Script for AM65 SR1
      • 3.1.1.2.8. Sample Script for AM65 SR2
    • 3.1.1.3. NAND
      • 3.1.1.3.1. Erasing, Reading and Writing to/from NAND partitions
      • 3.1.1.3.2. Writing to NAND via DFU
      • 3.1.1.3.3. NAND Boot
      • 3.1.1.3.4. Booting Kernel and Filesystem from NAND
      • 3.1.1.3.5. U-Boot Environment in NAND
    • 3.1.1.4. SD, eMMC and USB
      • 3.1.1.4.1. Overview
      • 3.1.1.4.2. MMC
        • 3.1.1.4.2.1. Listing MMC devices
        • 3.1.1.4.2.2. MMC HW partitions
        • 3.1.1.4.2.3. Selecting MMC device and partitions
        • 3.1.1.4.2.4. View MMC partition contents
        • 3.1.1.4.2.5. MMC supported boot modes
        • 3.1.1.4.2.6. Flashing an MMC device using USB-DFU
        • 3.1.1.4.2.7. Flashing an SD card from a host PC
      • 3.1.1.4.3. USB
        • 3.1.1.4.3.1. Configuring USB in Host Mode
        • 3.1.1.4.3.2. Flash and boot SPL from USB storage
        • 3.1.1.4.3.3. Boot Linux from USB storage
        • 3.1.1.4.3.4. MMC support in u-boot
        • 3.1.1.4.3.5. Steps for working around SD card issues in u-boot
    • 3.1.1.5. SPI
      • 3.1.1.5.1. Writing to SPI from U-Boot
      • 3.1.1.5.2. Booting from SPI
    • 3.1.1.6. OSPI/QSPI NOR/NAND
    • 3.1.1.7. NOR
      • 3.1.1.7.1. Writing to NOR from U-Boot
      • 3.1.1.7.2. Booting from NOR
    • 3.1.1.8. UART
      • 3.1.1.8.1. Booting U-Boot from the console UART
    • 3.1.1.9. SATA
      • 3.1.1.9.1. Viewing SATA Devices
      • 3.1.1.9.2. Viewing Partitions
      • 3.1.1.9.3. Identifying Partition Filesystem Type
      • 3.1.1.9.4. Viewing, Reading and Writing to Partition
      • 3.1.1.9.5. View Partition Contents
    • 3.1.1.10. UFS
    • 3.1.1.11. HyperBus and HyperFlash
    • 3.1.1.12. RemoteProc
      • 3.1.1.12.1. Initialization
      • 3.1.1.12.2. Loading
      • 3.1.1.12.3. Starting
      • 3.1.1.12.4. Stop
      • 3.1.1.12.5. Lockstep and Split mode
      • 3.1.1.12.6. HS Devices
    • 3.1.1.13. Adaptive Voltage Scaling (AVS) Class 0
      • 3.1.1.13.1. Hardware Architecture
      • 3.1.1.13.2. Configuration options
      • 3.1.1.13.3. Driver
    • 3.1.1.14. Thermal shutdown Support
      • 3.1.1.14.1. Driver
  • 3.1.2. Troubleshooting
    • 3.1.2.1. U-Boot Debug Tips
    • 3.1.2.2. Debugging U-Boot and SPL
      • 3.1.2.2.1. Debug Example
        • 3.1.2.2.1.1. Setup
        • 3.1.2.2.1.2. Using OpenOCD & GDB
        • 3.1.2.2.1.3. Using CCS
    • 3.1.2.3. Loading Uboot through CCS
      • 3.1.2.3.1. Step 1: Software Downloads
      • 3.1.2.3.2. Step 2: Testing Hardware Connection
      • 3.1.2.3.3. Step 3: Building the SPL/Uboot images
      • 3.1.2.3.4. Step 4: CCS Configuration
      • 3.1.2.3.5. Step 5: Change ARM mode
      • 3.1.2.3.6. Step 6: Loading SPL
      • 3.1.2.3.7. Step 7: Loading Uboot Image
• 3.2. Kernel
  • 3.2.1. Users Guide
    • 3.2.1.1. Overview
    • 3.2.1.2. Getting the Kernel Source Code
    • 3.2.1.3. Preparing to Build
      • 3.2.1.3.1. Compiler
      • 3.2.1.3.2. Cleaning the Kernel Sources
    • 3.2.1.4. Configuring the Kernel
      • 3.2.1.4.1. Using Default Configurations
      • 3.2.1.4.2. Customizing the Configuration
    • 3.2.1.5. Compiling the Sources
      • 3.2.1.5.1. Compiling the Kernel
      • 3.2.1.5.2. Compiling the Device Tree Binaries
      • 3.2.1.5.3. Compiling the Kernel Modules
    • 3.2.1.6. Creating the kernel fitImage for high security device / GP devices
      • 3.2.1.6.1. Describing FIT source
      • 3.2.1.6.2. Generating the fitImage
      • 3.2.1.6.3. Build uboot again
    • 3.2.1.7. Installing the Kernel
      • 3.2.1.7.1. Installing the Kernel Image and Device Tree Binaries
      • 3.2.1.7.2. Installing the Kernel Modules
  • 3.2.2. Kernel Drivers
    • 3.2.2.1. ADC
    • 3.2.2.2. Audio
      • 3.2.2.2.1. Introduction
      • 3.2.2.2.2. Software Architecture
      • 3.2.2.2.3. Generic commands and instructions
      • 3.2.2.2.4. Board-specific instructions
      • 3.2.2.2.5. Potential issues
      • 3.2.2.2.6. Additional Information
    • 3.2.2.3. CSI2RX
      • 3.2.2.3.1. Introduction
      • 3.2.2.3.2. Hardware Architecture
      • 3.2.2.3.3. Driver Architecture
        • 3.2.2.3.3.1. The Media Controller API
        • 3.2.2.3.3.2. Utilities to interact with the driver
        • 3.2.2.3.3.3. Building the driver
      • 3.2.2.3.4. Creating device tree nodes for sensor
      • 3.2.2.3.5. Enabling camera sensors
    • 3.2.2.4. Crypto
      • 3.2.2.4.1. Introduction
      • 3.2.2.4.2. Building the Drivers
      • 3.2.2.4.3. Using Cryptographic Hardware Accelerators from OpenSSL
      • 3.2.2.4.4. Using the TRNG Hardware Accelerator
      • 3.2.2.4.5. Hardware Accelerator testing
        • 3.2.2.4.5.1. Testing using the tcrypt module
        • 3.2.2.4.5.2. IPSec Testing
    • 3.2.2.5. MCAN
    • 3.2.2.6. DSS
      • 3.2.2.6.1. Introduction
      • 3.2.2.6.2. Supported Devices
      • 3.2.2.6.3. Hardware Architecture
        • 3.2.2.6.3.1. Display Controller (DISPC)
        • 3.2.2.6.3.2. SoC Hardware Description
        • 3.2.2.6.3.3. Supported Features
      • 3.2.2.6.4. Driver Architecture
        • 3.2.2.6.4.1. Driver Features
      • 3.2.2.6.5. Driver Configuration
        • 3.2.2.6.5.1. Kernel Configuration Options
        • 3.2.2.6.5.2. Device Tree Node
      • 3.2.2.6.6. Driver Usage
        • 3.2.2.6.6.1. Loading tidss
        • 3.2.2.6.6.2. Using tidss
        • 3.2.2.6.6.3. Testing tidss
        • 3.2.2.6.6.4. tidss properties
        • 3.2.2.6.6.5. Buffers
        • 3.2.2.6.6.6. fbdev emulation (/dev/fb0)
    • 3.2.2.7. GPIO
    • 3.2.2.8. HyperBus and HyperFlash
      • 3.2.2.8.1. Introduction
      • 3.2.2.8.2. Driver Architecture
        • 3.2.2.8.2.1. Kernel Configuration Options
        • 3.2.2.8.2.2. DT Configuration
        • 3.2.2.8.2.3. Driver Usage
        • 3.2.2.8.2.4. Testing
    • 3.2.2.9. I2C
    • 3.2.2.10. CPSW Ethernet
      • 3.2.2.10.1. Introduction
      • 3.2.2.10.2. Instances of the CPSW Subsystem
      • 3.2.2.10.3. TSN Documentation and Testing
    • 3.2.2.10.3.1. CPSW2g Ethernet
      • 3.2.2.10.3.1.1. Introduction
        • 3.2.2.10.3.1.1.1. Supported platforms
      • 3.2.2.10.3.1.2. Driver Configuration
      • 3.2.2.10.3.1.3. Device tree bindings
      • 3.2.2.10.3.1.4. MAC mode
        • 3.2.2.10.3.1.4.1. Interrupt pacing
        • 3.2.2.10.3.1.4.2. Errata: i2329 MDIO interface corruption (CPSW and PRUSS)
    • 3.2.2.11. PCIe End Point
    • 3.2.2.12. PCIe Backplane
    • 3.2.2.13. PCIe Root Complex
    • 3.2.2.14. TPS6594 PMIC
      • 3.2.2.14.1. Introduction
      • 3.2.2.14.2. Device tree configuration
      • 3.2.2.14.3. TPS6594 I2C driver
      • 3.2.2.14.4. TPS6594 SPI driver
      • 3.2.2.14.5. TPS6594 GPIO/pinctrl driver
      • 3.2.2.14.6. TPS6594 regulator driver
      • 3.2.2.14.7. TPS6594 ESM driver
      • 3.2.2.14.8. TPS6594 RTC driver
      • 3.2.2.14.9. TPS6594 PFSM driver
    • 3.2.2.15. OSPI/QSPI NOR/NAND
    • 3.2.2.16. SERDES
      • 3.2.2.16.1. Introduction
      • 3.2.2.16.2. Types of SERDES
      • 3.2.2.16.3. SERDES Configurations
      • 3.2.2.16.4. SERDES Instances
      • 3.2.2.16.5. SERDES Muxing
      • 3.2.2.16.6. SERDES Clocking Options
        • 3.2.2.16.6.1. Internal Reference Clock
        • 3.2.2.16.6.2. External Reference Clock
        • 3.2.2.16.6.3. Selecting Between Internal and External Reference Clock
    • 3.2.2.17. SPI
    • 3.2.2.18. NAND
    • 3.2.2.19. MMCSD
      • 3.2.2.19.1. Introduction
      • 3.2.2.19.2. References
      • 3.2.2.19.3. Features
      • 3.2.2.19.4. Supported ultra high speed (UHS) modes
      • 3.2.2.19.5. Driver configuration
      • 3.2.2.19.6. MMC support in Linux
      • 3.2.2.19.7. Steps for working around SD card issues in Linux
      • 3.2.2.19.8. Listing MMC devices from Linux
      • 3.2.2.19.9. Create partitions in eMMC UDA
        • 3.2.2.19.9.1. Create “boot” partition
        • 3.2.2.19.9.2. Create “root” partition
      • 3.2.2.19.10. Formatting eMMC partitions from Linux
        • 3.2.2.19.10.1. Format to vfat
        • 3.2.2.19.10.2. Format to ext4
      • 3.2.2.19.11. Flash eMMC for MMCSD boot
        • 3.2.2.19.11.1. Flash to eMMC “boot” partition
        • 3.2.2.19.11.2. Flash to eMMC “root” partition
    • 3.2.2.20. DM TIMER
      • 3.2.2.20.1. Driver Sources
      • 3.2.2.20.2. Kernel Configuration
      • 3.2.2.20.3. Driver Usage
      • 3.2.2.20.4. Examples
    • 3.2.2.21. UART
      • 3.2.2.21.1. Introduction
      • 3.2.2.21.2. Driver Features
      • 3.2.2.21.3. Basic External loopback testing
    • 3.2.2.22. UBIFS
    • 3.2.2.23. UFS
    • 3.2.2.24. USB
      • 3.2.2.24.1. Introduction
      • 3.2.2.24.2. TI SoC Integration
      • 3.2.2.24.3. EVM
    • 3.2.2.25. Voltage & Thermal Management (VTM)
      • 3.2.2.25.1. Introduction
      • 3.2.2.25.2. Driver Features
      • 3.2.2.25.3. Finding More Information
  • 3.2.3. LTP-DDT Validation
  • 3.2.4. FAQs
• 3.3. Power Management
  • 3.3.1. DFS
• 3.4. Filesystem
• 3.5. Tools
  • 3.5.1. Development Tools
    • 3.5.1.1. Processor SDK Linux Top-Level Makefile
    • 3.5.1.2. Processor SDK Linux GCC Toolchain
    • 3.5.1.3. Creating SD Cards
    • 3.5.1.4. Processor SDK Linux Setup Script
  • 3.5.2. Flash Tools
    • 3.5.2.1. AM335x/AM437x Flash Programming
    • 3.5.2.2. Sitara Uniflash
  • 3.5.3. Code Composer Studio
    • 3.5.3.1. CCS Installation
    • 3.5.3.2. CCS Compiling
    • 3.5.3.3. Remote Explorer Setup with CCS
    • 3.5.3.4. GDB Setup with CCS
    • 3.5.3.5. Kernel Debugging with CCS
  • 3.5.4. System configuration tool
• 3.6. IPC for J721E
  • 3.6.1. Typical Boot Flow on J721E for ARM Linux users
  • 3.6.2. Getting Started with IPC Linux Examples
  • 3.6.3. Booting Remote Cores from Linux console/User space
  • 3.6.4. DMA memory Carveouts
  • 3.6.5. Changing the Memory Map
  • 3.6.6. RPMsg Char Driver
  • 3.6.7. ti-rpmsg-char library
  • 3.6.8. RPMsg examples:
• 3.7. Graphics and Display
  • 3.7.1. Introduction
    • 3.7.1.1. Software architecture
    • 3.7.1.2. Graphics demos
  • 3.7.2. Rogue debug info
  • 3.7.3. Rogue power management info
    • 3.7.3.1. Active power management
    • 3.7.3.2. Suspend and resume
  • 3.7.4. Build guide
    • 3.7.4.1. Proprietary stack
      • 3.7.4.1.1. Proprietary kernel module
        • 3.7.4.1.1.1. Building the proprietary kernel module
      • 3.7.4.1.2. Proprietary user space components
        • 3.7.4.1.2.1. Installing the proprietary user space components
      • 3.7.4.1.3. Proprietary mesa components
        • 3.7.4.1.3.1. Building the proprietary mesa components
      • 3.7.4.1.4. Using the proprietary stack
    • 3.7.4.2. Open source stack
      • 3.7.4.2.1. Open source kernel module
      • 3.7.4.2.2. Open source firmware
      • 3.7.4.2.3. Open source mesa components
      • 3.7.4.2.4. Using the open source stack
  • 3.7.5. Display
    • 3.7.5.1. Finding the connector ID
    • 3.7.5.2. Finding the plane ID
    • 3.7.5.3. Using the connector ID and plane ID
  • 3.7.6. OpenGL ES
  • 3.7.7. Vulkan
  • 3.7.8. OpenCL
  • 3.7.9. Qt graphics framework
    • 3.7.9.1. Demos
    • 3.7.9.2. Qt platform abstraction
    • 3.7.9.3. Running Qt applications with the Weston In-Vehicle Infotainment shell
  • 3.7.10. GTK+ graphics framework
    • 3.7.10.1. Demos
  • 3.7.11. Weston
    • 3.7.11.1. Starting Weston with Emptty
    • 3.7.11.2. Starting Weston manually
    • 3.7.11.3. Stopping Weston
    • 3.7.11.4. Running Weston clients
    • 3.7.11.5. Running multimedia with Wayland sink
    • 3.7.11.6. Using in-vehicle infotainment shell feature
  • 3.7.12. PowerVR tools
    • 3.7.12.1. PVRTune
    • 3.7.12.2. PVRCarbon
• 3.8. Multimedia Video Codec
  • 3.8.1. Introduction
  • 3.8.2. Encoder and Decoder Capabilities
  • 3.8.3. Demos
  • 3.8.4. Software Architecture
    • 3.8.4.1. Software Stack of Accelerated Codec Encoding/Decoding
    • 3.8.4.2. Linux Kernel Drivers
      • 3.8.4.2.1. V4L2 Video Decoder
      • 3.8.4.2.2. V4L2 Video Encoder
    • 3.8.4.3. GStreamer Plugins for Multimedia
  • 3.8.5. GStreamer Pipelines
    • 3.8.5.1. Running a GStreamer pipeline
    • 3.8.5.2. Limitations of GStreamer Plugins
    • 3.8.5.3. GStreamer Plugin Internals
  • 3.8.6. Memory Optimisation
    • 3.8.6.1. Decoder Driver Memory Optimisation
  • 3.8.7. Rebuilding and Debugging
    • 3.8.7.1. Rebuilding V4L2 Drivers
    • 3.8.7.2. Debug Logs
    • 3.8.7.3. Latency Profiling
• 3.9. Virtualization
  • 3.9.1. Docker Linux Container Runtime
    • 3.9.1.1. Overview
    • 3.9.1.2. Exploring Docker In Processor SDK
      • 3.9.1.2.1. Booting the Docker Filesystem
      • 3.9.1.2.2. Configuring the Docker daemon
      • 3.9.1.2.3. Docker Hello World
    • 3.9.1.3. Docker References
• 3.10. ARM Trusted Firmware-A
• 3.11. OP-TEE