|First, some build notes on the Silicon Turnkey eXpress XTc.
|This board has both 87x/88x procesor options at various
|frequencies. The configuration file has some macros for setting
|the clock speed, not all have been tested. They all have
|a 10MHz input clock. Please do not check in a configuration
|file that selects a high speed not available on all processors.
|We chose the 66MHz core and bus speed, which should be OK on
|all boards. If you have a processor, lucky you! :-)
|Just build a new configuration with that speed, check
|the macro configuration to ensure it's correct. If the
|macro is updated, please check that in, but keep default
|The board is likely to have more than 1Mbyte of NOR boot flash.
|It was also configured with a high boot vector (Dan's fault)
|so the standard 8xx mapping doesn't work well. We had to move
|the addresses around a little bit so one copy would work. The
|flash got fragmented, and we are working on a better solution.
|There is an "xtc.cfg" floating around for the BDI2000, use
|that for programming a new version of U-Boot. You can probably
|find it on the Silicon Turnkey eXpress (www.silicontkx.com),
|Embedded Alley Solutions (embeddedalley.com), or Denx (denx.de)
|The board will also have various SDRAM sizes, but the code
|should automatically determine the amount of memory.
|There are a couple of different board versions, visually
|they use different BGA or surface mount memory parts. However,
|they are logically the same board.
|Now, some operational notes.
|The board has the option of sporting two FEC Ethernet ports.
|The second port isn't configured to be automatically available
|because it would cause U-Boot to generate a board data structure
|(the bd_t) with multiple MAC addresses and be incompatible with
|standard 8xx kernel builds. You can use/test the second FEC
|in U-Boot by assigning an 'eth1addr' and selecting the second
|FEC as the port to use.
|Since this is just a development board and not a product, STx
|does not assign unique MAC addresses. We just pilfer the
|"default" ones used by Wolfgang on some other boards. Please
|ensure you assign unique MAC addresses when using these boards.
|The serial port baud rate is 38400, because that's the way
|I like it :-)
|Thanks to Pantelis for lots of the work on this board port.
| -- Dan
|15 August 2005