diff options
| author | Rob Herring <rob.herring@calxeda.com> | 2011-12-06 11:15:04 -0600 |
|---|---|---|
| committer | John Rigby <john.rigby@linaro.org> | 2012-08-16 09:56:02 -0600 |
| commit | a89d0d39e2504876b7c30e80c94a2e63360988aa (patch) | |
| tree | 6310f8659ca427bbe89aac7638d61e6b2b9fe3d4 | |
| parent | 0fd9b7b97f6ca663d425795cbba0f68eb501de8e (diff) | |
net: allow setting env enetaddr from net device setting
If the net driver has setup a valid ethernet address and an ethernet
address is not set in the environment already, then set the environment
variables from the net driver setting
This enables pxe booting on boards which don't set ethaddr env variable.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
| -rw-r--r-- | doc/README.enetaddr | 4 | ||||
| -rw-r--r-- | net/eth.c | 18 |
2 files changed, 19 insertions, 3 deletions
diff --git a/doc/README.enetaddr b/doc/README.enetaddr index 2d8e24f5c..6c61817da 100644 --- a/doc/README.enetaddr +++ b/doc/README.enetaddr @@ -32,7 +32,9 @@ 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 +3. Write value to environment if setup in struct eth_device->enetaddr by driver + initialize() function. Give priority to the value in the environment if a + conflict. 4. Program the address into hardware if the following conditions are met: a) The relevant driver has a 'write_addr' function b) The user hasn't set an 'ethmacskip' environment variable @@ -62,6 +62,15 @@ int eth_getenv_enetaddr_by_index(const char *base_name, int index, return eth_getenv_enetaddr(enetvar, enetaddr); } +int eth_setenv_enetaddr_by_index(const char *base_name, int index, + uchar *enetaddr) +{ + char enetvar[32]; + sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index); + return eth_setenv_enetaddr(enetvar, enetaddr); +} + + static int eth_mac_skip(int index) { char enetvar[15]; @@ -191,8 +200,13 @@ int eth_write_hwaddr(struct eth_device *dev, const char *base_name, unsigned char env_enetaddr[6]; int ret = 0; - eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr); - + if (!eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr)) { + if (!is_valid_ether_addr(dev->enetaddr)) + return -1; + eth_setenv_enetaddr_by_index(base_name, eth_number, + dev->enetaddr); + memcpy(env_enetaddr, dev->enetaddr, 6); + } if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) { if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) && memcmp(dev->enetaddr, env_enetaddr, 6)) { |