Depending on platform you need to download one or more components from the external URL and put in downloads directory.

DM355
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 - Code Engine 2.24

OMAP3530
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  - Code Engine 2.24
  - DSP/BIOS Link for Linux 1.61.03  
  - DSP/BIOS 5.33.04
  - C6000 Code Generation Tools v6.1.9 Linux
  - Local Power Managment 1.24

URL's:
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* CE 2.24 (codec_engine_2_24.tar.gz)
	http://software-dl.ti.com/dsps/dsps_registered_sw/sdo_sb/targetcontent/CE/ce_2_24/index.html

* DSP/BIOS 5.33.04 (bios_setuplinux_5_33_04.bin) 
	http://software-dl.ti.com/dsps/dsps_registered_sw/sdo_sb/targetcontent/bios/bios_5_33/bios_5_33_04/index_external.html

* DSP/BIOS Link for Linux 1.61.03 (dsplink_1_61_03.tar.gz)
	http://software-dl.ti.com/dsps/dsps_registered_sw/sdo_sb/targetcontent/link/link_1_60/index.html

* C6000 Code Generation Tools v6.1.9 Linux (ti_cgt_c6000_6.1.9_setup_linux_x86.bin)
	https://www-a.ti.com/downloads/sds_support/TICodegenerationTools/download.htm
* LPM (local_power_manager_1_24.tar.gz) http://software-dl.ti.com/dsps/dsps_registered_sw/sdo_sb/targetcontent/linuxutils/linuxutils_2_24/index.html 

* Generic download URI
	http://software-dl.ti.com/dsps/dsps_registered_sw/sdo_sb/targetcontent/