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| author | Heiko Schocher <hs@denx.de> | 2010-03-31 08:34:51 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-03-31 15:13:32 +0200 |
| commit | 8e64d6efd8d778a5f83d8bff9cd273a86dcc182f (patch) | |
| tree | 53a7889f6bb780dbe10d284269dca09aa95821bf /doc/README.enetaddr | |
| parent | b78b48c6a0c34b2991e31fc4548aaf773d34f2b3 (diff) | |
| download | u-boot-8e64d6efd8d778a5f83d8bff9cd273a86dcc182f.tar.gz u-boot-8e64d6efd8d778a5f83d8bff9cd273a86dcc182f.tar.bz2 u-boot-8e64d6efd8d778a5f83d8bff9cd273a86dcc182f.zip | |
net, doc: How to setup MAC address correctly
As this seems unclear, document how the flow of setting up
the MAC address is correct.
Signed-off-by: Heiko Schocher <hs@denx.de>
Text changed slightly, adding input from Mike Frysinger.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'doc/README.enetaddr')
| -rw-r--r-- | doc/README.enetaddr | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/README.enetaddr b/doc/README.enetaddr index 1d75aa3876..94d800a02a 100644 --- a/doc/README.enetaddr +++ b/doc/README.enetaddr @@ -28,6 +28,17 @@ Here are the places where MAC addresses might be stored: purpose of passing this information to an OS kernel we are about to boot +Correct flow of setting up the MAC address (summarized): + +1. Read from hardware in initialize() function +2. Read from environment in net/eth.c after initialize() +3. Give priority to the value in the environment if a conflict +4. Program hardware in the device's init() function. + +If somebody wants to subvert the design philosophy, this can be done +in the board-specific board_eth_init() function by calling eth_init() +after all the NICs have been registered. + ------- Usage ------- |