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Installing the Software
4-12
See Section A.4, Alternate Boot Methods for information about booting
with TFTP or NFS and using flash or the EVM’s hard drive.
4.3.7 Configuring the Boot Setup for PAL Video Users
You can configure the EVM to select either the NTSC or PAL video
standard during the default boot sequence. To select PAL, set switch 10
on the S3 (USER) user bank of switches to On. For NTSC, set this switch
to Off. The switch causes the U-Boot environment variable "videostd" to
be set to "pal" or "ntsc".
Using the "videostd" variable in the "bootargs" environment variable
passed to the Linux kernel causes the corresponding video standard to
be used by the display (VPBE) driver. For example:
EVM # setenv bootargs video=davincifb:vid0=720x576x16,
2500K:vid1=720x576x16,2500K:osd0=720x576x16,2025K
davinci_enc_mngr.ch0_output=COMPOSITE
console=ttyS0,115200n8 noinitrd rw ip=dhcp
root=/dev/hda1 mem=120M
EVM # setenv bootcmd 'setenv setboot setenv bootargs
\$(bootargs) davinci_enc_mngr.ch0_mode=\$(videostd); run
setboot; bootm 0x2050000'
When the "boot" command is run in U-Boot, the value of "videostd" is
substituted based on the setting of the switch.
See Section A.1, Changing the Video Input/Output Methods for
information about switching to S-Video and Component video.
4.3.8 Notes on Using Evaluation/Production Codecs
As part of the DVSDK installation, you received a number of codecs:
❏ H.264 Base Profile Decoder
❏ H.264 Base Profile Encoder
❏ MPEG4 Restricted Simple Profile Decoder
❏ MPEG4 Simple Profile Encoder
❏ MPEG2 Decoder
❏ AAC Decoder
❏ MP3 Decoder
❏ G.711 Decoder (not a TI codec)
❏ G.711 Encoder (not a TI codec)