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The DENX U-Boot and Linux Guide (DULG) for
canyonlands
Table of contents:
1. Abstract•
2. Introduction
2.1. Copyright♦
2.2. Disclaimer♦
2.3. Availability♦
2.4. Credits♦
2.5. Translations♦
2.6. Feedback♦
2.7. Conventions♦
•
3. Embedded Linux Development Kit
3.1. ELDK Availability♦
3.2. ELDK Getting Help♦
3.3. Supported Host Systems♦
3.4. Supported Target Architectures♦
3.5. Installation
3.5.1. Product Packaging◊
3.5.2. Downloading the ELDK◊
3.5.3. Initial Installation◊
3.5.4. Installation and Removal of Individual Packages◊
3.5.5. Removal of the Entire Installation◊
♦
3.6. Working with ELDK
3.6.1. Switching Between Multiple Installations◊
♦
3.7. Mounting Target Components via NFS♦
3.8. Rebuilding ELDK Components
3.8.1. ELDK Source Distribution◊
3.8.2. Rebuilding Target Packages◊
3.8.3. Rebuilding ELDT Packages◊
♦
3.9. ELDK Packages
3.9.1. List of ELDT Packages◊
3.9.2. List of Target Packages◊
♦
3.10. Rebuilding the ELDK from Scratch
3.10.1. ELDK Build Process Overview◊
3.10.2. Setting Up ELDK Build Environment◊
3.10.3. build.sh Usage◊
3.10.4. Format of the cpkgs.lst and tpkgs.lst Files◊
♦
3.11. Notes for Solaris 2.x Host Environment♦
•
4. System Setup
4.1. Serial Console Access♦
4.2. Configuring the "cu" command♦
4.3. Configuring the "kermit" command♦
4.4. Using the "minicom" program♦
4.5. Permission Denied Problems♦
4.6. Configuration of a TFTP Server♦
4.7. Configuration of a BOOTP / DHCP Server♦
4.8. Configuring a NFS Server♦
•
5. Das U-Boot
5.1. Current Versions♦
5.2. Unpacking the Source Code♦
•
The DENX U-Boot and Linux Guide (DULG) for canyonlands 1
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. autoscr - 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⋅
◊
♦
The DENX U-Boot and Linux Guide (DULG) for canyonlands 2
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◊
♦
5.13. U-Boot Image Formats♦
5.14. U-Boot Advanced Features
5.14.1. Boot Count Limit◊
5.14.2. Bitmap Support◊
5.14.3. Splash Screen Support◊
♦
6. Embedded Linux Configuration
6.1. Download and Unpack the Linux Kernel Sources♦
6.2. Kernel Configuration and Compilation♦
6.3. Installation♦
•
7. Booting Embedded Linux
7.1. Introduction♦
7.2. Flattened Device Tree Blob♦
7.3. Passing Kernel Arguments♦
7.4. Boot Arguments Unleashed♦
7.5. Networked Operation with Root Filesystem over NFS
7.5.1. Bootlog of Linux kernel with Root Filesystem over NFS◊
♦
7.6. Boot from Flash Memory♦
7.7. Standalone Operation with Ramdisk Image♦
•
8. Building and Using Modules•
9. Advanced Topics
9.1. Flash Filesystems
9.1.1. Memory Technology Devices◊
9.1.2. Journalling Flash File System◊
9.1.3. Second Version of JFFS◊
9.1.4. Compressed ROM Filesystem◊
♦
9.2. The TMPFS Virtual Memory Filesystem
9.2.1. Mount Parameters◊
9.2.2. Kernel Support for tmpfs◊
9.2.3. Usage of tmpfs in Embedded Systems◊
♦
9.3. Adding Swap Space♦
9.4. Splash Screen Support in Linux♦
9.5. Root File System: Design and Building
9.5.1. Root File System on a Ramdisk◊
♦
•
The DENX U-Boot and Linux Guide (DULG) for canyonlands 3
9.5.2. Root File System on a JFFS2 File System◊
9.5.3. Root File System on a cramfs File System◊
9.5.4. Root File System on a Read-Only ext2 File System◊
9.5.5. Root File System on a Flash Card◊
9.5.6. Root File System in a Read-Only File in a FAT File System◊
9.6. Root File System Selection♦
9.7. Overlay File Systems♦
9.8. The Persistent RAM File system (PRAMFS)
9.8.1. Mount Parameters◊
9.8.2. Example◊
♦
10. Debugging
10.1. Debugging of U-Boot
10.1.1. Debugging of U-Boot Before Relocation◊
10.1.2. Debugging of U-Boot After Relocation◊
♦
10.2. Linux Kernel Debugging
10.2.1. Linux Kernel and Statically Linked Device Drivers◊
10.2.2. Dynamically Loaded Device Drivers (Modules)◊
10.2.3. GDB Macros to Simplify Module Loading◊
♦
10.3. GDB Startup File and Utility Scripts♦
10.4. Tips and Tricks♦
10.5. Application Debugging
10.5.1. Local Debugging◊
10.5.2. Remote Debugging◊
♦
10.6. Debugging with Graphical User Interfaces♦
•
11. Simple Embedded Linux Framework•
12. Books, Mailing Lists, Links, etc.
12.1. Application Notes♦
12.2. Further Reading
12.2.1. Linux kernel◊
12.2.2. General Linux / Unix programming◊
12.2.3. Network Programming◊
12.2.4. C++ programming◊
12.2.5. Java programming◊
12.2.6. PowerPC Programming◊
12.2.7. Embedded Topics◊
♦
12.3. Mailing Lists♦
12.4. Links♦
12.5. Tools♦
•
13. Appendix
13.1. Flat Device Tree♦
13.2. BDI2000 Configuration file♦
•
14. FAQ - Frequently Asked Questions
14.1. ELDK
14.1.1. ELDK Installation under FreeBSD◊
14.1.2. ELDK Installation Hangs◊
14.1.3. .gvfs: Permission Denied◊
14.1.4. Installation on Local Harddisk◊
14.1.5. ELDK Include Files Missing◊
14.1.6. Using the ELDK on a 64 bit platform◊
14.1.7. GDB Problems with BDI2000/BDI3000 on e500 Cores◊
14.1.8. [[ELDK Installation Aborts][ELDK 2.x Installation Aborts]]◊
♦
14.2. U-Boot
14.2.1. Can U-Boot be configured such that it can be started in RAM?◊
14.2.2. Relocation cannot be done when using -mrelocatable◊
♦
•
The DENX U-Boot and Linux Guide (DULG) for canyonlands 4
14.2.3. U-Boot crashes after relocation to RAM◊
14.2.4. Warning - bad CRC, using default environment◊
14.2.5. Wrong debug symbols after relocation◊
14.2.6. Decoding U-Boot Crash Dumps◊
14.2.7. Porting Problem: cannot move location counter backwards◊
14.2.8. U-Boot Doesn't Run after Upgrading my Compiler◊
14.2.9. How Can I Reduce The Image Size?◊
14.2.10. Erasing Flash Fails◊
14.2.11. Ethernet Does Not Work◊
14.2.12. Where Can I Get a Valid MAC Address from?◊
14.2.13. Why do I get TFTP timeouts?◊
14.2.14. Why is my Ethernet operation not reliable?◊
14.2.15. How the Command Line Parsing Works
14.2.15.1. Old, simple command line parser⋅
14.2.15.2. Hush shell⋅
14.2.15.3. Hush shell scripts⋅
14.2.15.4. General rules⋅
◊
14.2.16. How can I load and uncompress a compressed image◊
14.2.17. My standalone program does not work◊
14.2.18. Linux hangs after uncompressing the kernel◊
14.3. Linux
14.3.1. Linux crashes randomly◊
14.3.2. Linux crashes when uncompressing the kernel◊
14.3.3. Linux Post Mortem Analysis◊
14.3.4. Linux kernel register usage◊
14.3.5. Linux Kernel Ignores my bootargs◊
14.3.6. Cannot configure Root Filesystem over NFS◊
14.3.7. Linux Kernel Panics because "init" process dies◊
14.3.8. Unable to open an initial console◊
14.3.9. Mounting a Filesystem over NFS hangs forever◊
14.3.10. Ethernet does not work in Linux◊
14.3.11. Loopback interface does not work◊
14.3.12. Linux kernel messages are not printed on the console◊
14.3.13. Linux ignores input when using the framebuffer driver◊
14.3.14. How to switch off the screen saver and the blinking cursor?◊
14.3.15. BogoMIPS Value too low◊
14.3.16. Linux Kernel crashes when using a ramdisk image◊
14.3.17. Ramdisk Greater than 4 MB Causes Problems◊
14.3.18. Combining a Kernel and a Ramdisk into a Multi-File Image◊
14.3.19. Adding Files to Ramdisk is Non Persistent◊
14.3.20. Kernel Configuration for PCMCIA◊
14.3.21. Configure Linux for PCMCIA Cards using the Card Services package◊
14.3.22. Configure Linux for PCMCIA Cards without the Card Services package
14.3.22.1. Using a MacOS Partition Table⋅
14.3.22.2. Using a MS-DOS Partition Table⋅
◊
14.3.23. Boot-Time Configuration of MTD Partitions◊
14.3.24. Use NTP to synchronize system time against RTC◊
14.3.25. Configure Linux for XIP (Execution In Place)
14.3.25.1. XIP Kernel⋅
14.3.25.2. Cramfs Filesystem⋅
14.3.25.3. Hints and Notes⋅
14.3.25.4. Space requirements and RAM saving, an example⋅
◊
14.3.26. Use SCC UART with Hardware Handshake◊
14.3.27. How can I access U-Boot environment variables in Linux?◊
♦
The DENX U-Boot and Linux Guide (DULG) for canyonlands 5
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