diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/smc91111.c | 98 |
1 files changed, 88 insertions, 10 deletions
diff --git a/drivers/smc91111.c b/drivers/smc91111.c index 748830e..f29a8a4 100644 --- a/drivers/smc91111.c +++ b/drivers/smc91111.c @@ -52,6 +52,7 @@ . o skeleton.c by Donald Becker ( becker@cesdis.gsfc.nasa.gov ) . . History: + . 06/19/03 Richard Woodruff Made u-boot environment aware and added mac addr checks. . 10/17/01 Marco Hasewinkel Modify for DNP/1110 . 07/25/01 Woojung Huh Modify for ADS Bitsy . 04/25/01 Daris A Nevil Initial public release through SMSC @@ -176,7 +177,7 @@ 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); /* @@ -199,7 +200,12 @@ static void smc_phy_configure(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); /* ------------------------------------------------------------ @@ -226,7 +232,7 @@ void smc_set_mac_addr(const char *addr) { /* * smc_get_macaddr is no longer used. If you want to override the default - * mac address, call smc_get_mac_addr as a part of the board initialisation. + * mac address, call smc_get_mac_addr as a part of the board initialization. */ #if 0 @@ -665,14 +671,13 @@ 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; PRINTK2("%s:smc_open\n", SMC_DEV_NAME); /* reset the hardware */ - smc_reset(); smc_enable(); @@ -681,12 +686,16 @@ static int smc_open() smc_phy_configure(); #endif - /* conservative setting (10Mbps, HalfDuplex, no AutoNeg.) */ /* SMC_SELECT_BANK(0); */ /* SMC_outw(0, RPC_REG); */ - 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 ) { @@ -1385,8 +1394,7 @@ static void print_packet( byte * buf, int length ) #endif int eth_init(bd_t *bd) { - smc_open(); - return 0; + return (smc_open(bd)); } void eth_halt() { @@ -1401,4 +1409,74 @@ int eth_send(volatile void *packet, int length) { return smc_send_packet(packet, length); } +int smc_get_ethaddr(bd_t *bd) +{ + int env_size, rom_valid, env_present = 0, reg; + char *s = NULL, *e, *v_mac, es[] = "11:22:33:44:55:66"; + uchar s_env_mac[64], v_env_mac[6], v_rom_mac[6]; + + env_size = getenv_r ("ethaddr", s_env_mac, sizeof (s_env_mac)); + if ((env_size > 0) && (env_size < sizeof(es))) { /* exit if env is bad */ + printf("\n*** ERROR: ethaddr is not set properly!!\n"); + return(-1); + } + + if(env_size > 0){ + 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("\n*** Warning: Environment and ROM MAC addresses don't match\n"); + printf("*** Using Environment MAC\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 */ + return(0); +} + +int get_rom_mac(char *v_rom_mac) +{ + int is_rom_present = 0; +#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 + if(is_rom_present) + { + /* if eeprom contents are valid + * extract mac address into hw_mac_addr, 8 or 16 bit accesses + * memcpy (v_rom_mac, hc_mac_addr, 6); + * return(1); + */ + } + memset(v_rom_mac, 0, 6); + return(0); +#endif +} + #endif /* CONFIG_DRIVER_SMC91111 */ |