Digi 9P 9360/9750 manual Interfaces & Devices

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Introduction	44
U-Boot	44
ConnectCore 9P 9360/9750	45
Linux boot methods	46
TFTP/NFS	46
NAND-Flash	46
NOR Flash	47
USB	47
Linux boot process	48
Passing arguments to the kernel	50
Automating the image download	50
Updating the Flash memory	50
Updating a running system (the easy way)	51
Updating a running system manually	51
Step 1: Download the new image file to RAM	52
Step 2: Erase the Flash partition	52
Step 3: Write the image to Flash	52
ConnectCore 9P 9360/9750	53
U-Boot	53
Kernel	53
Root File System	53
Updating a corrupted system using a debugger	54
ConnectCore 9P 9360/9750	54
Chapter 8 Root File System Types	55
NFSROOT	55
Step 1: Set bootargs to be passed to the kernel	56
Step 2: Download the kernel to RAM via TFTP	56
Step 3: Launch the kernel from RAM	56
JFFS2	57
Step 1: Set bootargs to be passed to the kernel	58
Step 2: Copy the kernel to RAM	58
Step 3: Launch the kernel from RAM	58
Chapter 9 Interfaces & Devices	61
Serial interface	61
USB host interface	62
I2C interface	62
SPI interface	62

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Contents LxNETES User’s Guide ConnectCore 9P 9360/9750 Page Page Page Contents Building the First Project Interfaces & Devices Appendix B Overview IntroductionCross-development environment Template project Linux kernel sourcesExample applications General features FeaturesWhat’s new in LxNETES 3.2? RTC Gpio This is a tip. It contains useful information about a topic Conventions used in this manualAcronyms and abbreviations System Requirements/Prerequisites RequirementsSystem requirements Optional but recommended components Disk spaceTftp daemon Applications & ServicesNFS server JTAG-Booster N E T E S U s e r ’ s G u i d e Getting Started Connecting host PC with development boardIntroduction Seyon MinicomSeyon Settings Connect powerTest Ethernet configuration # ifconfig eth0 Installing LxNETESGuided Installation Manual Installation N u a l Installation Run configure Building the Default ProjectBuilding the First Project Run make Run make installWriting applications Application DevelopmentAdding your own applications Included example applications Using C++Display Proc/cpuinfo contents Debugging applications Choose the right architecture for your target Web server Boa Included pre-built applicationsShell applications busybox Telnet daemon utelnetdEmbedded Qt Nano-X/microwindowsMem Useful applicationsWriting your own kernel modules What is a kernel module?Kernel Development Writing kernel modulesBuilding and loading of kernel modules Add the module to the build environmentIncluded Kernel modules Minimal Advanced Topics Modifying the default projectD i f y i n g t h e d e Fault p r o j e c t Building a custom project Boot Boot processIntroduction Bank # 0 00000000 32 MB ConnectCore 9P 9360/9750NAND-Flash Linux boot methodsUSB NOR FlashMMU Linux boot processV a n c e d T o p i c s Automating the image download Passing arguments to the kernelUpdating the Flash memory Updating a running system manually Updating a running system the easy wayErase the Flash partition Download the new image file to RAMWrite the image to Flash Kernel BootRoot File System Updating a corrupted system using a debugger Root File System Types Download the kernel to RAM via Tftp Set bootargs to be passed to the kernelLaunch the kernel from RAM JFFS2 Copy the kernel to RAM O t F i l e S y s t e m T y p e s N E T E S U s e r ’ s G u i d e Serial interface Interfaces & DevicesLCD interface USB host interfaceI2C interface SPI interfaceReal time clock RTC How to set the initial system date and timeCompact flash interface SD card interfacePCI interface Appendix a CD contentsRelated documentation Docs Images Install.shReadme.txt RelNotes.txtHardware SetupConnectCore 9P 9360 CC9P9360 ConnectCore 9P 9750 CC9P9750Sdram memory layout Memory layoutsFlash memory layout ConnectCore 9P 9360 / ConnectCore 9PTextbase N E T E S U s e r ’ s G u i d e Appendix B Boot command referenceO o t c o m m a n d r e f e r e n c e Skipped CC9C CCXP270 UNC90 Example A9M24x0 User keys