- NETWORK Support (other):
+ CONFIG_DRIVER_AT91EMAC
+ Support for AT91RM9200 EMAC.
+
+ CONFIG_RMII
+ Define this to use reduced MII inteface
+
+ CONFIG_DRIVER_AT91EMAC_QUIET
+ If this defined, the driver is quiet.
+ The driver doen't show link status messages.
+
CONFIG_DRIVER_LAN91C96
Support for SMSC's LAN91C96 chips.
- CONFIG_SYS_EEPROM_SIZE:
The size in bytes of the EEPROM device.
+ - CONFIG_ENV_EEPROM_IS_ON_I2C
+ define this, if you have I2C and SPI activated, and your
+ EEPROM, which holds the environment, is on the I2C bus.
+
+ - CONFIG_I2C_ENV_EEPROM_BUS
+ if you have an Environment on an EEPROM reached over
+ I2C muxes, you can define here, how to reach this
+ EEPROM. For example:
+
+ #define CONFIG_I2C_ENV_EEPROM_BUS "pca9547:70:d\0"
+
+ EEPROM which holds the environment, is reached over
+ a pca9547 i2c mux with address 0x70, channel 3.
- CONFIG_ENV_IS_IN_DATAFLASH:
R30: GOT pointer
R31: frame pointer
- (U-Boot also uses R14 as internal GOT pointer.)
+ (U-Boot also uses R12 as internal GOT pointer. r12
+ is a volatile register so r12 needs to be reset when
+ going back and forth between asm and C)
==> U-Boot will use R2 to hold a pointer to the global data