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