1 2 3First, some build notes on the Silicon Turnkey eXpress XTc. 4 5This board has both 87x/88x procesor options at various 6frequencies. The configuration file has some macros for setting 7the clock speed, not all have been tested. They all have 8a 10MHz input clock. Please do not check in a configuration 9file that selects a high speed not available on all processors. 10We chose the 66MHz core and bus speed, which should be OK on 11all boards. If you have a processor, lucky you! :-) 12Just build a new configuration with that speed, check 13the macro configuration to ensure it's correct. If the 14macro is updated, please check that in, but keep default 15processor speed. 16 17The board is likely to have more than 1Mbyte of NOR boot flash. 18It was also configured with a high boot vector (Dan's fault) 19so the standard 8xx mapping doesn't work well. We had to move 20the addresses around a little bit so one copy would work. The 21flash got fragmented, and we are working on a better solution. 22There is an "xtc.cfg" floating around for the BDI2000, use 23that for programming a new version of U-Boot. You can probably 24find it on the Silicon Turnkey eXpress (www.silicontkx.com), 25Embedded Alley Solutions (embeddedalley.com), or Denx (denx.de) 26servers. 27 28The board will also have various SDRAM sizes, but the code 29should automatically determine the amount of memory. 30 31There are a couple of different board versions, visually 32they use different BGA or surface mount memory parts. However, 33they are logically the same board. 34 35Now, some operational notes. 36 37The board has the option of sporting two FEC Ethernet ports. 38The second port isn't configured to be automatically available 39because it would cause U-Boot to generate a board data structure 40(the bd_t) with multiple MAC addresses and be incompatible with 41standard 8xx kernel builds. You can use/test the second FEC 42in U-Boot by assigning an 'eth1addr' and selecting the second 43FEC as the port to use. 44 45Since this is just a development board and not a product, STx 46does not assign unique MAC addresses. We just pilfer the 47"default" ones used by Wolfgang on some other boards. Please 48ensure you assign unique MAC addresses when using these boards. 49 50The serial port baud rate is 38400, because that's the way 51I like it :-) 52 53Thanks to Pantelis for lots of the work on this board port. 54 55Have Fun! 56 57 -- Dan 58 5915 August 2005 60