Texas Instruments TMS320DM357 DVEVM v2.05 manual 4.8Booting the New Linux Kernel

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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