Texas Instruments TMS320DM357 DVEVM v2.05 manual Booting via Tftp Using NFS File System

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Alternate Boot Methods

When you boot, look for the following lines that confirm the boot mode:

##Booting image at 80700000 ...

...

Starting kernel ...

...

VFS: Mounted root (nfs filesystem).

A.4.4 Booting via TFTP Using NFS File System

To boot in this mode, set the following parameters after you abort the automatic boot sequence:

EVM # setenv bootcmd 'dhcp;bootm'

EVM # setenv serverip <ip addr of tftp server>

EVM # setenv bootfile <name of kernel image>

EVM # setenv rootpath <root directory to mount>

EVM # setenv nfshost <ip addr of nfs host>

EVM # setenv bootargs console=ttyS0,115200n8 noinitrd rw ip=dhcp root=/dev/nfs nfsroot=$(nfshost):$(rootpath),nolock mem=232M video=davincifb:vid0=0,2025K:vid1=0, 1350K:osd0=720x576x16,

2025K davinci_enc_mgr.ch0_output=COMPOSITE davinci_enc_mgr.ch0_mode=ntsc

EVM # boot

The <root directory to mount> must match the filesystem that you set up on your workstation. For example, /home/<useracct>/workdir/filesys.

When you boot, look for the following lines that confirm the boot mode:

TFTP from server 192.168.160.71; our IP address is 192.168.161.186

Filename 'library/davinci/0.4.2/uImage'.

...

Starting kernel ...

...

VFS: Mounted root (nfs filesystem).

A-8

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Contents TMS320DM357 Dvevm Getting Started Guide Important Notice Evaluation BOARD/KIT Important Notice FCC Warning Preface About This GuideTrademarks Contents Contents Dvevm Overview What’s in this Kit? What’s on the Board? DM357What’s Next? EVM Hardware Setup Setting Up the Hardware Audio In P3 Audio Out P5 Composite Video Out J8 Uart P6 Connecting to a Console Window Running the Demonstration Software Default Boot Configuration Starting the Standalone DemosStarting the Standalone Demos Starting the Standalone Demos Running the Standalone Demos Shutting Down the Demos About the Encode + Decode Demo About the Encode DemoIR Remote Buttons for Encode Demo About the Decode Demo IR Remote Buttons for Decode DemoRunning the Demos from the Command Line Running the Network Demo Page Dvevm Software Setup Software Overview Command Prompts in This Guide Application Software ComponentsPreparing to Install Installing the Software Installing the Target Linux SoftwareInstalling the Dvsdk Software Installing the A/V Demo Files Exporting a Shared File System for Target AccessSwitch user to root on the host Linux workstation Testing the Shared File System EVM # setenv nfshost ip address of nfs hostInstalling the Software Setting Up the Build/Development Environment Writing a Simple Program and Running it on the EVMCompile the kernel using the following command Building a New Linux KernelRebuilding the Dvevm Software for the Target Building with DSPLink Booting the New Linux Kernel EVM # setenv serverip tftp server ip addressUsing the Digital Video Test Bench Dvtb Page Additional Procedures Changing the Video Input/Output Methods NtscPutting Demo Applications in the Third-Party Menu File filename.tar.gz Setting Up a Tftp Server You should see the following outputAlternate Boot Methods Booting from Flash Using Board’s Nand Flash File SystemBooting via Tftp Using Board’s Nand Flash File System Booting from Flash Using NFS File SystemBooting via Tftp Using NFS File System Updating/Restoring the Bootloaders Updating U-Boot Using U-BootTo assign a dynamic address, use the following Updating/Restoring the Bootloaders Restoring the Nand Flash Updating the KernelRestoring the Nand Flash Using NFS Restoring the Nand Flash Using RAM Disk and a 2 GB SD Card EVM # tar xf /mnt/mmc/dm357flashimage####.tar EVM # cd Page Index NFSIndex--2 Index--3 Spectrum Digital, Inc 511458-0001B