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| 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 |
| processor speed. |
| |
| 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) |
| servers. |
| |
| 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 :-) |
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| Thanks to Pantelis for lots of the work on this board port. |
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| Have Fun! |
| |
| -- Dan |
| |
| 15 August 2005 |
