Author: adrian
Date: Sat Apr 2 03:48:15 2011
New Revision: 220260
URL: http://svn.freebsd.org/changeset/base/220260
Log:
A handful of the openwrt devices use a MAC address that's at a hard-coded
offset in the flash.
Some devices (eg the TPLink WR-1043ND) don't have a flash environment
partition which can be queried for the current board settings.
This particular workaround allows for image creators to use a hint
to set the base MAC address. For example:
hint.arge.0.eeprommac=0x1f01fc00
Modified:
head/sys/mips/atheros/if_arge.c
Modified: head/sys/mips/atheros/if_arge.c
==============================================================================
--- head/sys/mips/atheros/if_arge.c Sat Apr 2 00:27:22 2011
(r220259)
+++ head/sys/mips/atheros/if_arge.c Sat Apr 2 03:48:15 2011
(r220260)
@@ -227,11 +227,32 @@ arge_attach(device_t dev)
uint32_t reg, rnd;
int is_base_mac_empty, i, phys_total;
uint32_t hint;
+ long eeprom_mac_addr = 0;
sc = device_get_softc(dev);
sc->arge_dev = dev;
sc->arge_mac_unit = device_get_unit(dev);
+ /*
+ * Some units (eg the TP-Link WR-1043ND) do not have a convenient
+ * EEPROM location to read the ethernet MAC address from.
+ * OpenWRT simply snaffles it from a fixed location.
+ *
+ * Since multiple units seem to use this feature, include
+ * a method of setting the MAC address based on an flash location
+ * in CPU address space.
+ */
+ if (sc->arge_mac_unit == 0 &&
+ resource_long_value(device_get_name(dev), device_get_unit(dev),
+ "eeprommac", &eeprom_mac_addr) == 0) {
+ int i;
+ const char *mac = (const char *)
MIPS_PHYS_TO_KSEG1(eeprom_mac_addr);
+ device_printf(dev, "Overriding MAC from EEPROM\n");
+ for (i = 0; i < 6; i++) {
+ ar711_base_mac[i] = mac[i];
+ }
+ }
+
KASSERT(((sc->arge_mac_unit == 0) || (sc->arge_mac_unit == 1)),
("if_arge: Only MAC0 and MAC1 supported"));
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