Texas Instruments TMS320DM357 DVEVM v2.05 manual Booting the New Linux Kernel

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Booting the New Linux Kernel

4.8Booting the New Linux Kernel

After building the new kernel, in order to use it to boot the DaVinci board, you must transfer it to the board via TFTP. It is assumed you have completed the steps in Section 4.5, Building a New Linux Kernel and the boot file, uImage has been copied to /tftpboot (or some other site-specific TFTP accessible location).

1)Power on the EVM board, and abort the automatic boot sequence by pressing a key in the console window (Section 2.2).

2)Set the following environment variables. (This assumes you are starting from a default, clean U-Boot environment. See Section 3.1, Default Boot Configuration for information on the U-Boot default environment.)

EVM # setenv bootcmd 'dhcp;bootm'

EVM # setenv serverip <tftp server ip address>

EVM # setenv bootfile uImage

EVM # setenv bootargs mem=232M console=ttyS0,115200n8 root=/dev/mtdblock0 rw rootfstype=yaffs2 ip=dhcp video=davincifb:vid0=0,2025K:vid1=0, 1350K:osd0=720x576x16,

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

EVM # saveenv

Note that the setenv bootargs command should be typed on a single line.

3) Boot the board:

EVM # boot

This configuration boots a new Linux kernel via TFTP with a NAND flash based file system. To boot using an NFS file system, see Section A.4.4.

For instructions on how to verify that your host workstation is running a

TFTP server, and for instructions on what to do if it isn’t, see Section A.3.

For more details on booting, see Section A.4.

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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