cs8900: get mac address from environment

The environment is the canonical storage location of the mac address, so
we're killing off the global data location and moving everything to
querying the env directly.

The cs8900 driver also changes slightly in that the hardware is not
consulted if the mac address in the env is sane.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
CC: Marius Groeger <mgroeger@sysgo.de>
CC: Ben Warren <biggerbadderben@gmail.com>

drivers/net/cs8900.c

@@ -110,18 +110,14 @@ static void eth_reginit (void)
 	put_reg (PP_LineCTL, PP_LineCTL_Rx | PP_LineCTL_Tx);
 }
 
-void cs8900_get_enetaddr (uchar * addr)
+void cs8900_get_enetaddr (void)
 {
 	int i;
-	unsigned char env_enetaddr[6];
-	char *tmp = getenv ("ethaddr");
-	char *end;
-
-	for (i=0; i<6; i++) {
-		env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
-		if (tmp)
-			tmp = (*end) ? end+1 : end;
-	}
+	uchar enetaddr[6];
+
+	/* if the env is setup, then bail */
+	if (eth_getenv_enetaddr("ethaddr", enetaddr))
+		return;
 
 	/* verify chip id */
 	if (get_reg_init_bus (PP_ChipID) != 0x630e)
@@ -135,35 +131,12 @@ void cs8900_get_enetaddr (uchar * addr)
 			unsigned int Addr;
 
 			Addr = get_reg (PP_IA + i * 2);
-			addr[i * 2] = Addr & 0xFF;
-			addr[i * 2 + 1] = Addr >> 8;
+			enetaddr[i * 2] = Addr & 0xFF;
+			enetaddr[i * 2 + 1] = Addr >> 8;
 		}
 
-		if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6) != 0 &&
-		    memcmp(env_enetaddr, addr, 6) != 0) {
-			printf ("\nWarning: MAC addresses don't match:\n");
-			printf ("\tHW MAC address:  "
-				"%02X:%02X:%02X:%02X:%02X:%02X\n",
-				addr[0], addr[1],
-				addr[2], addr[3],
-				addr[4], addr[5] );
-			printf ("\t\"ethaddr\" value: "
-				"%02X:%02X:%02X:%02X:%02X:%02X\n",
-				env_enetaddr[0], env_enetaddr[1],
-				env_enetaddr[2], env_enetaddr[3],
-				env_enetaddr[4], env_enetaddr[5]) ;
-			debug ("### Set MAC addr from environment\n");
-			memcpy (addr, env_enetaddr, 6);
-		}
-		if (!tmp) {
-			char ethaddr[20];
-			sprintf (ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X",
-				 addr[0], addr[1],
-				 addr[2], addr[3],
-				 addr[4], addr[5]) ;
-			debug ("### Set environment from HW MAC addr = \"%s\"\n", ethaddr);
-			setenv ("ethaddr", ethaddr);
-		}
+		eth_setenv_enetaddr("ethaddr", enetaddr);
+		debug("### Set environment from HW MAC addr = \"%pM\"\n", enetaddr);
 	}
 }
 
@@ -178,6 +151,8 @@ void eth_halt (void)
 
 int eth_init (bd_t * bd)
 {
+	uchar *enetaddr[6];
+
 	/* verify chip id */
 	if (get_reg_init_bus (PP_ChipID) != 0x630e) {
 		printf ("CS8900 Ethernet chip not found?!\n");
@@ -186,9 +161,10 @@ int eth_init (bd_t * bd)
 
 	eth_reset ();
 	/* set the ethernet address */
-	put_reg (PP_IA + 0, bd->bi_enetaddr[0] | (bd->bi_enetaddr[1] << 8));
-	put_reg (PP_IA + 2, bd->bi_enetaddr[2] | (bd->bi_enetaddr[3] << 8));
-	put_reg (PP_IA + 4, bd->bi_enetaddr[4] | (bd->bi_enetaddr[5] << 8));
+	eth_getenv_enetaddr("ethaddr", enetaddr);
+	put_reg (PP_IA + 0, enetaddr[0] | (enetaddr[1] << 8));
+	put_reg (PP_IA + 2, enetaddr[2] | (enetaddr[3] << 8));
+	put_reg (PP_IA + 4, enetaddr[4] | (enetaddr[5] << 8));
 
 	eth_reginit ();
 	return 0;