projects / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| c3f9d493 WD |
1 | IBM Ocotea Board |
| 2 | ||
| 3 | Last Update: March 2, 2004 | |
| 4 | ======================================================================= | |
| 5 | ||
| 6 | This file contains some handy info regarding U-Boot and the IBM | |
| 7 | Ocotea 440gx evalutation board. See the README.ppc440 for additional | |
| 8 | information. | |
| 9 | ||
| 10 | ||
| 11 | SWITCH SETTINGS & JUMPERS | |
| 12 | ========================== | |
| 13 | ||
| 14 | Here's what I've been using successfully. If you feel inclined to | |
| 15 | change things ... please read the docs! | |
| 16 | ||
| 17 | DIPSW U46 U80 | |
| 18 | ------------------------ | |
| 19 | SW 1 off off | |
| 20 | SW 2 on off | |
| 21 | SW 3 off off | |
| 22 | SW 4 off off | |
| 23 | SW 5 off off | |
| 24 | SW 6 on on | |
| 25 | SW 7 on off | |
| 26 | SW 8 on off | |
| 27 | ||
| 28 | J41: strapped | |
| 29 | J42: open | |
| 30 | ||
| 31 | All others are factory default. | |
| 32 | ||
| 33 | ||
| 34 | I2C Information | |
| 35 | ===================== | |
| 36 | ||
| 37 | See README.ebony for information. | |
| 38 | ||
| 39 | PCI | |
| 40 | =========================== | |
| 41 | ||
| 42 | Untested at the time of writing. | |
| 43 | ||
| 44 | PPC440GX Ethernet EMACs | |
| 45 | =========================== | |
| 46 | ||
| 47 | All EMAC ports have been tested and are known to work | |
| 48 | with EPS Group 4. | |
| 49 | ||
| 50 | Special note about the Cicada CIS8201: | |
| 51 | The CIS8201 Gigabit PHY comes up in GMII mode by default. | |
| 52 | One must hit an extended register to allow use of RGMII mode. | |
| 53 | This has been done in the 440gx_enet.c file with a #ifdef/endif | |
| 54 | pair. | |
| 55 | ||
| 56 | IBM does not store the EMAC ethernet addresses within their PIBS bootloader. | |
| 57 | The addresses contained in the config header file are from my particular | |
| 58 | board and you _*should*_ change them to reflect your board either in the | |
| 59 | config file and/or in your environment variables. I found the addresses on | |
| 60 | labels on the bottom side of the board. | |
| 61 | ||
| 62 | ||
| 63 | BDI2k or JTAG Debugging | |
| 64 | =========================== | |
| 65 | ||
| 66 | For ease of debugging you can swap the small boot flash and external SRAM | |
| 67 | by changing U46:3 to on. You can then use the sram as your boot flash by | |
| 68 | loading the sram via the jtag debugger. | |
| 69 | ||
| 70 | ||
| 71 | Regards, | |
| 72 | --Travis | |
| 73 | <[email protected]> |