forked from rrcarlosr/Jetpack
50 lines
1.7 KiB
Plaintext
50 lines
1.7 KiB
Plaintext
Wind River SBC8641D reference board
|
|
===========================
|
|
|
|
Created 06/14/2007 Joe Hamman
|
|
Copyright 2007, Embedded Specialties, Inc.
|
|
Copyright 2007 Wind River Systems, Inc.
|
|
-----------------------------
|
|
|
|
1. Building U-Boot
|
|
------------------
|
|
The SBC8641D code is known to build using ELDK 4.1.
|
|
|
|
$ make sbc8641d_config
|
|
Configuring for sbc8641d board...
|
|
|
|
$ make
|
|
|
|
|
|
2. Switch and Jumper Settings
|
|
-----------------------------
|
|
All Jumpers & Switches are in their default positions. Please refer to
|
|
the board documentation for details. Some settings control CPU voltages
|
|
and settings may change with board revisions.
|
|
|
|
3. Known limitations
|
|
--------------------
|
|
PCI:
|
|
The PCI command may hang if no boards are present in either slot.
|
|
|
|
4. Reflashing U-Boot
|
|
--------------------
|
|
The board has two independent flash devices which can be used for dual
|
|
booting, or for U-Boot backup and recovery. A two pin jumper on the
|
|
three pin JP10 determines which device is attached to /CS0 line.
|
|
|
|
Assuming one device has a functional U-Boot, and the other device has
|
|
a recently installed non-functional image, to perform a recovery from
|
|
that non-functional image goes essentially as follows:
|
|
|
|
a) power down the board and jumper JP10 to select the functional image.
|
|
b) power on the board and let it get to U-Boot prompt.
|
|
c) while on, using static precautions, move JP10 back to the failed image.
|
|
d) use "md fff00000" to confirm you are looking at the failed image
|
|
e) turn off write protect with "prot off all"
|
|
f) get new image, i.e. "tftp 200000 /somepath/u-boot.bin"
|
|
g) erase failed image: "erase FFF00000 FFF5FFFF"
|
|
h) copy in new image: "cp.b 200000 FFF00000 60000"
|
|
i) ensure new image is written: "md fff00000"
|
|
k) power cycle the board and confirm new image works.
|