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