Topics

• 5. Das U-Boot
  • 5.1. Current Versions
  • 5.2. Unpacking the Source Code
  • 5.3. Configuration
  • 5.4. Installation
    • 5.4.1. Before You Begin
      • 5.4.1.1. Installation Requirements
      • 5.4.1.2. Board Identification Data
    • 5.4.2. Installation Using a BDM/JTAG Debugger
    • 5.4.3. Installation using U-Boot
  • 5.5. Tool Installation
  • 5.6. Initialization
  • 5.7. Initial Steps
  • 5.8. The First Power-On
  • 5.9. U-Boot Command Line Interface
    • 5.9.1. Information Commands
      • 5.9.1.1. bdinfo - print Board Info structure
      • 5.9.1.2. coninfo - print console devices and informations
      • 5.9.1.3. flinfo - print FLASH memory information
      • 5.9.1.4. iminfo - print header information for application image
      • 5.9.1.5. help - print online help
    • 5.9.2. Memory Commands
      • 5.9.2.1. base - print or set address offset
      • 5.9.2.2. crc32 - checksum calculation
      • 5.9.2.3. cmp - memory compare
      • 5.9.2.4. cp - memory copy
      • 5.9.2.5. md - memory display
      • 5.9.2.6. mm - memory modify (auto-incrementing)
      • 5.9.2.7. mtest - simple RAM test
      • 5.9.2.8. mw - memory write (fill)
      • 5.9.2.9. nm - memory modify (constant address)
      • 5.9.2.10. loop - infinite loop on address range
    • 5.9.3. Flash Memory Commands
      • 5.9.3.1. cp - memory copy
      • 5.9.3.2. flinfo - print FLASH memory information
      • 5.9.3.3. erase - erase FLASH memory
      • 5.9.3.4. protect - enable or disable FLASH write protection
      • 5.9.3.5. mtdparts - define a Linux compatible MTD partition scheme
    • 5.9.4. Execution Control Commands
      • 5.9.4.1. source - run script from memory
      • 5.9.4.2. bootm - boot application image from memory
      • 5.9.4.3. go - start application at address 'addr'
    • 5.9.5. Download Commands
      • 5.9.5.1. bootp - boot image via network using BOOTP/TFTP protocol
      • 5.9.5.2. dhcp - invoke DHCP client to obtain IP/boot params
      • 5.9.5.3. loadb - load binary file over serial line (kermit mode)
      • 5.9.5.4. loads - load S-Record file over serial line
      • 5.9.5.5. rarpboot- boot image via network using RARP/TFTP protocol
      • 5.9.5.6. tftpboot- boot image via network using TFTP protocol
    • 5.9.6. Environment Variables Commands
      • 5.9.6.1. printenv- print environment variables
      • 5.9.6.2. saveenv - save environment variables to persistent storage
      • 5.9.6.3. setenv - set environment variables
      • 5.9.6.4. run - run commands in an environment variable
      • 5.9.6.5. bootd - boot default, i.e., run 'bootcmd'
    • 5.9.7. Flattened Device Tree support
      • 5.9.7.1. fdt addr - select FDT to work on
      • 5.9.7.2. fdt list - print one level
      • 5.9.7.3. fdt print - recursive print
      • 5.9.7.4. fdt mknode - create new nodes
      • 5.9.7.5. fdt set - set node properties
      • 5.9.7.6. fdt rm - remove nodes or properties
      • 5.9.7.7. fdt move - move FDT blob to new address
      • 5.9.7.8. fdt chosen - fixup dynamic info
    • 5.9.8. Special Commands
      • 5.9.8.1. i2c - I2C sub-system
    • 5.9.9. Storage devices
    • 5.9.10. Miscellaneous Commands
      • 5.9.10.1. echo - echo args to console
      • 5.9.10.2. reset - Perform RESET of the CPU
      • 5.9.10.3. sleep - delay execution for some time
      • 5.9.10.4. version - print monitor version
      • 5.9.10.5. ? - alias for 'help'
  • 5.10. U-Boot Environment Variables
  • 5.11. U-Boot Scripting Capabilities
  • 5.12. U-Boot Standalone Applications
    • 5.12.1. "Hello World" Demo
    • 5.12.2. Timer Demo
    • 5.12.3. Processor cache considerations
    • 5.12.4. Running on core other than core 0
  • 5.13. U-Boot Image Formats
  • 5.14. U-Boot Advanced Features
    • 5.14.1. Boot Count Limit