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5
Thermal ........................................................................................................................... 45
5.1
Heatspreader .................................................................................................................... 45
5.2
Cooling Considerations ........................................................................................................ 45
6
U-Boot ............................................................................................................................ 47
6.1
Introduction to U-Boot ........................................................................................................ 47
6.2
Standard U-Boot Commands .................................................................................................. 47
6.3
Kontron-Specific Commands ................................................................................................. 49
6.4
U-Boot Access and Startup ................................................................................................... 56
6.5
Working with U-Boot ........................................................................................................... 56
6.5.1
General Operation .............................................................................................................. 56
6.5.2
Using the sconf Command .................................................................................................... 56
6.5.3
Examples of sconf Command Usage ......................................................................................... 57
6.5.3.1
sconf select ...................................................................................................................... 57
6.5.3.2
sconf set .......................................................................................................................... 57
6.5.4
Using the Network .............................................................................................................. 58
6.5.4.1
Interface Selection ............................................................................................................. 58
6.5.4.1.1
ethprime .......................................................................................................................... 58
6.5.4.1.2
ethact ............................................................................................................................. 59
6.5.4.1.3
ethrotate ......................................................................................................................... 59
6.5.4.2
Contacting the Server ......................................................................................................... 59
6.5.5
Using SD Cards .................................................................................................................. 59
6.5.6
Using SATA Devices ............................................................................................................. 60
6.5.7
Using USB Devices .............................................................................................................. 60
6.5.8
Using the Onboard NAND Flash .............................................................................................. 61
6.5.9
Using the SPI Flash for OS .................................................................................................... 61
6.5.10
Booting an OS ................................................................................................................... 62
6.5.10.1
Booting Linux ................................................................................................................... 62
6.5.10.2
Booting VxWorks ELF Images ................................................................................................. 62
6.6
Getting Help ..................................................................................................................... 63
6.7
Update ............................................................................................................................ 63
6.8
Recovery Mechanism ........................................................................................................... 64
6.9
Copyrights and Licensing ..................................................................................................... 65
6.10
Obtaining Source Code ........................................................................................................ 68
7
Installation ...................................................................................................................... 69
7.1
Safety ............................................................................................................................. 69
7.2
General Instructions on Usage ............................................................................................... 69
7.3
COM Express® Module-to-Carrier Assembly Considerations ........................................................... 69
Appendix ......................................................................................................................... 70
1
Warranty .......................................................................................................................... 70
2
Proprietary Note ................................................................................................................ 70
3
Trademarks ....................................................................................................................... 70
4
Environmental Protection Statement ....................................................................................... 70
4
User Guide
COMe-bP5020
www.kontron.com
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