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diff --git a/doc/README.ocotea b/doc/README.ocotea new file mode 100644 index 0000000..403735d --- /dev/null +++ b/doc/README.ocotea @@ -0,0 +1,73 @@ + IBM Ocotea Board + + Last Update: March 2, 2004 +======================================================================= + +This file contains some handy info regarding U-Boot and the IBM +Ocotea 440gx evalutation board. See the README.ppc440 for additional +information. + + +SWITCH SETTINGS & JUMPERS +========================== + +Here's what I've been using successfully. If you feel inclined to +change things ... please read the docs! + +DIPSW U46 U80 +------------------------ +SW 1 off off +SW 2 on off +SW 3 off off +SW 4 off off +SW 5 off off +SW 6 on on +SW 7 on off +SW 8 on off + +J41: strapped +J42: open + +All others are factory default. + + +I2C Information +===================== + +See README.ebony for information. + +PCI +=========================== + +Untested at the time of writing. + +PPC440GX Ethernet EMACs +=========================== + +All EMAC ports have been tested and are known to work +with EPS Group 4. + +Special note about the Cicada CIS8201: + The CIS8201 Gigabit PHY comes up in GMII mode by default. + One must hit an extended register to allow use of RGMII mode. + This has been done in the 440gx_enet.c file with a #ifdef/endif + pair. + +IBM does not store the EMAC ethernet addresses within their PIBS bootloader. +The addresses contained in the config header file are from my particular +board and you _*should*_ change them to reflect your board either in the +config file and/or in your environment variables. I found the addresses on +labels on the bottom side of the board. + + +BDI2k or JTAG Debugging +=========================== + +For ease of debugging you can swap the small boot flash and external SRAM +by changing U46:3 to on. You can then use the sram as your boot flash by +loading the sram via the jtag debugger. + + +Regards, +--Travis +<tsawyer@sandburst.com> |