It would appear from the board_detect.h file (see code snippet below) that the MAC address is stored in the eeprom. However, when I dump the contents of the eeprom, it is not there. The eeprom only seems to contain: header magic number, board name, and version. So where are the MAC addresses stored?
U-Boot# i2c md 0x50 0 90
0000: aa 55 33 ee 41 4d 35 37 32 50 4d 5f 41 2e 33 30 .U3.AM572PM_A.30
0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0020: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0030: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0040: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0050: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0060: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0070: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
/**
* struct ti_am_eeprom - This structure holds data read in from the
* AM335x, AM437x, AM57xx TI EVM EEPROMs.
* @header: This holds the magic number
* @name: The name of the board
* @version: Board revision
* @serial: Board serial number
* @config: Reserved
* @mac_addr: Any MAC addresses written in the EEPROM
*
* The data is this structure is read from the EEPROM on the board.
* It is used for board detection which is based on name. It is used
* to configure specific TI boards. This allows booting of multiple
* TI boards with a single MLO and u-boot.
*/
struct ti_am_eeprom {
unsigned int header;
char name[TI_EEPROM_HDR_NAME_LEN];
char version[TI_EEPROM_HDR_REV_LEN];
char serial[TI_EEPROM_HDR_SERIAL_LEN];
char config[TI_EEPROM_HDR_CONFIG_LEN];
char mac_addr[TI_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
} __attribute__ ((__packed__));
