Digi 9P 9360/9750 Chapter 8 Root File System Types.......... .........................................55, Chapter 9 Interfaces & Devices........................................................ 61

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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