diff options
Diffstat (limited to 'drivers/lan91c96.c')
| -rw-r--r-- | drivers/lan91c96.c | 128 |
1 files changed, 119 insertions, 9 deletions
diff --git a/drivers/lan91c96.c b/drivers/lan91c96.c index 189ca87..032f978 100644 --- a/drivers/lan91c96.c +++ b/drivers/lan91c96.c @@ -162,7 +162,7 @@ void smc_destructor (void); * The kernel calls this function when someone wants to use the device, * typically 'ifconfig ethX up'. */ -static int smc_open (void); +static int smc_open (bd_t *bd); /* @@ -178,6 +178,12 @@ static int smc_close (void); */ static int smc_rcv (void); +/* See if a MAC address is defined in the current environment. If so use it. If not + . print a warning and set the environment and other globals with the default. + . If an EEPROM is present it really should be consulted. +*/ +int smc_get_ethaddr(bd_t *bd); +int get_rom_mac(char *v_rom_mac); /* ------------------------------------------------------------ * Internal routines @@ -588,9 +594,9 @@ void smc_destructor () * Set up everything, reset the card, etc .. * */ -static int smc_open () +static int smc_open (bd_t *bd) { - int i; /* used to set hw ethernet address */ + int i, err; /* used to set hw ethernet address */ PRINTK2 ("%s:smc_open\n", SMC_DEV_NAME); @@ -601,6 +607,12 @@ static int smc_open () SMC_SELECT_BANK (1); + err = smc_get_ethaddr (bd); /* set smc_mac_addr, and sync it with u-boot globals */ + if (err < 0) { + memset (bd->bi_enetaddr, 0, 6); /* hack to make error stick! upper code will abort if not set */ + return (-1); /* upper code ignores this, but NOT bi_enetaddr */ + } +#ifdef USE_32_BIT for (i = 0; i < 6; i += 2) { word address; @@ -608,6 +620,10 @@ static int smc_open () address |= smc_mac_addr[i]; SMC_outw (address, LAN91C96_IA0 + i); } +#else + for (i = 0; i < 6; i++) + SMC_outb (smc_mac_addr[i], LAN91C96_IA0 + i); +#endif return 0; } @@ -782,8 +798,7 @@ static void print_packet (byte * buf, int length) int eth_init (bd_t * bd) { - smc_open (); - return 0; + return (smc_open(bd)); } void eth_halt () @@ -801,10 +816,6 @@ int eth_send (volatile void *packet, int length) return smc_send_packet (packet, length); } -int eth_hw_init () -{ - return smc_hw_init (); -} /*------------------------------------------------------------------------- * smc_hw_init() @@ -852,4 +863,103 @@ static int smc_hw_init () #endif /* COMMANDS & CFG_NET */ + +/* smc_get_ethaddr (bd_t * bd) + * + * This checks both the environment and the ROM for an ethernet address. If + * found, the environment takes precedence. + */ + +int smc_get_ethaddr (bd_t * bd) +{ + int env_size = 0; + int rom_valid = 0; + int env_present = 0; + int reg = 0; + char *s = NULL; + char *e = NULL; + char *v_mac, es[] = "11:22:33:44:55:66"; + uchar s_env_mac[64]; + uchar v_env_mac[6]; + uchar v_rom_mac[6]; + + env_size = getenv_r ("ethaddr", s_env_mac, sizeof (s_env_mac)); + if (env_size != sizeof(es)) { /* Ignore if env is bad or not set */ + printf ("\n*** Warning: ethaddr is not set properly, ignoring!!\n"); + } else { + env_present = 1; + s = s_env_mac; + + for (reg = 0; reg < 6; ++reg) { /* turn string into mac value */ + v_env_mac[reg] = s ? simple_strtoul (s, &e, 16) : 0; + if (s) + s = (*e) ? e + 1 : e; + } + } + + rom_valid = get_rom_mac (v_rom_mac); /* get ROM mac value if any */ + + if (!env_present) { /* if NO env */ + if (rom_valid) { /* but ROM is valid */ + v_mac = v_rom_mac; + sprintf (s_env_mac, "%02X:%02X:%02X:%02X:%02X:%02X", + v_mac[0], v_mac[1], v_mac[2], v_mac[3], + v_mac[4], v_mac[5]); + setenv ("ethaddr", s_env_mac); + } else { /* no env, bad ROM */ + printf ("\n*** ERROR: ethaddr is NOT set !!\n"); + return (-1); + } + } else { /* good env, don't care ROM */ + v_mac = v_env_mac; /* always use a good env over a ROM */ + } + + if (env_present && rom_valid) { /* if both env and ROM are good */ + if (memcmp (v_env_mac, v_rom_mac, 6) != 0) { + printf ("\nWarning: MAC addresses don't match:\n"); + printf ("\tHW MAC address: " + "%02X:%02X:%02X:%02X:%02X:%02X\n", + v_rom_mac[0], v_rom_mac[1], + v_rom_mac[2], v_rom_mac[3], + v_rom_mac[4], v_rom_mac[5] ); + printf ("\t\"ethaddr\" value: " + "%02X:%02X:%02X:%02X:%02X:%02X\n", + v_env_mac[0], v_env_mac[1], + v_env_mac[2], v_env_mac[3], + v_env_mac[4], v_env_mac[5]) ; + debug ("### Set MAC addr from environment\n"); + } + } + memcpy (bd->bi_enetaddr, v_mac, 6); /* update global address to match env (allows env changing) */ + smc_set_mac_addr (v_mac); /* use old function to update smc default */ + PRINTK("Using MAC Address %02X:%02X:%02X:%02X:%02X:%02X\n", v_mac[0], v_mac[1], + v_mac[2], v_mac[3], v_mac[4], v_mac[5]); + return (0); +} + +/* + * get_rom_mac() + * Note, this has omly been tested for the OMAP730 P2. + */ + +int get_rom_mac (char *v_rom_mac) +{ +#ifdef HARDCODE_MAC /* used for testing or to supress run time warnings */ + char hw_mac_addr[] = { 0x02, 0x80, 0xad, 0x20, 0x31, 0xb8 }; + + memcpy (v_rom_mac, hw_mac_addr, 6); + return (1); +#else + int i; + SMC_SELECT_BANK (1); + for (i=0; i<6; i++) + { + v_rom_mac[i] = SMC_inb (LAN91C96_IA0 + i); + } + return (1); +#endif +} + + + #endif /* CONFIG_DRIVER_LAN91C96 */ |