* Patch by Stefan Roese, 06 Apr 2005:

  Updates for OCOTEA board:
  - Changed U-Boot size from 512kByte to 256kByte
  - Fixed flash driver to support boot from soldered user flash
  - Added README for switch from PIBS firmware to U-Boot

1 files changed, 99 insertions, 0 deletions

diff --git a/doc/README.ocotea-PIBS-to-U-Boot b/doc/README.ocotea-PIBS-to-U-Boot
new file mode 100644
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+------------------------------------------
+Installation of U-Boot using PIBS firmware
+------------------------------------------
+
+This document describes how to install U-Boot on the Ocotea PPC440GX
+Evaluation Board. We do not erase the PIBS firmware but install U-Boot in the
+soldered FLASH. After this you should be able to switch between PIBS and
+U-Boot via the switch U46 SW1. Please check that SW1 is off (= open) before
+continuing.
+
+Connect to the serial port 0 (J11 lower) of the Ocotea board using the cu
+program. See the hints for configuring cu above. Make sure you can
+communicate with the PIBS firmware: reset the board and hit ENTER a couple of
+times until you see the PIBS prompt (PIBS $). Then proceed as follows:
+
+
+Read MAC Addresses from PIBS
+----------------------------
+
+To read the configured MAC addresses available on your Ocotea board please use
+the following commands:
+
+PIBS $ echo $hwdaddr0
+000173017FE3
+PIBS $ echo $hwdaddr1
+000173017FE4
+PIBS $ echo $hwdaddr2
+000173017FE1
+PIBS $ echo $hwdaddr3
+000173017FE2
+
+In U-Boot this is stored in the following environment variables:
+
+* Ethernet Address 0: ethaddr = 000173017FE3 (==> 00:01:73:01:7F:E3)
+* Ethernet Address 1: eth1addr = 000173017FE4 (==> 00:01:73:01:7F:E4)
+* Ethernet Address 2: eth2addr = 000173017FE1 (==> 00:01:73:01:7F:E1)
+* Ethernet Address 3: eth3addr = 000173017FE2 (==> 00:01:73:01:7F:E2)
+
+
+Configure the network interface (ent0 == emac0)
+-----------------------------------------------
+
+To download the U-Boot image we need to configure the ethernet interface with
+the following commands:
+
+PIBS $ ifconfig ent0 192.168.160.142 netmask 255.255.0.0 up
+PIBS $ set ipdstaddr0=192.168.1.1
+status: writing PIBS variable value to FLASH
+PIBS $ set bootfilename=/tftpboot/ocotea/u-boot.bin
+status: writing PIBS variable value to FLASH
+
+Please insert correct parameters for your configuration (ip-addresses and
+file-location).
+
+
+Program U-Boot into soldered User-FLASH
+---------------------------------------
+
+Please make sure to use a newer version of U-Boot (at least 1.1.3), since
+older versions don't support running from user-FLASH.
+
+To program U-Boot into the soldered user-FLASH use the following command:
+
+PIBS $ storefile bin eth 0xffbc0000
+
+This commands loads the file vis ethernet into ram and copies it into the
+user-FLASH.
+
+
+Switch to U-Boot
+----------------
+
+Now you can turn your board off and switch SW1 (U46) to on (= closed). After
+powering the board you should see the following message:
+
+U-Boot 1.1.3 (Apr  5 2005 - 22:59:57)
+
+IBM PowerPC 440 GX Rev. C
+Board: IBM 440GX Evaluation Board
+        VCO: 1066 MHz
+        CPU: 533 MHz
+        PLB: 152 MHz
+        OPB: 76 MHz
+        EPB: 76 MHz
+I2C:   ready
+DRAM:  256 MB
+FLASH:  5 MB
+PCI:   Bus Dev VenId DevId Class Int
+In:    serial
+Out:   serial
+Err:   serial
+KGDB:  kgdb ready
+ready
+Net:   ppc_440x_eth0, ppc_440x_eth1, ppc_440x_eth2, ppc_440x_eth3
+BEDBUG:ready
+=>
+
+
+April 06 2005, Stefan Roese <sr@denx.de>