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-rw-r--r--drivers/smc91111.c98
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 */