From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Wed, 10 Sep 2008 15:44:04 +0000 (+0900)
Subject: MIPS: TXx9: Fix RBTX4939 ethernet address initialization
X-Git-Tag: firefly_0821_release~17021^2~11
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9cc4581528233e2a4eb8720621c1e2f613d7c38a;p=firefly-linux-kernel-4.4.55.git

MIPS: TXx9: Fix RBTX4939 ethernet address initialization

Fix location of ethernet adddress when booted from external ROM.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/txx9/rbtx4939/setup.c b/arch/mips/txx9/rbtx4939/setup.c
index 6daee9b1cd5e..98fbd9391bf8 100644
--- a/arch/mips/txx9/rbtx4939/setup.c
+++ b/arch/mips/txx9/rbtx4939/setup.c
@@ -308,16 +308,22 @@ static void __init rbtx4939_device_init(void)
 #if defined(CONFIG_TC35815) || defined(CONFIG_TC35815_MODULE)
 	int i, j;
 	unsigned char ethaddr[2][6];
+	u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
+
 	for (i = 0; i < 2; i++) {
 		unsigned long area = CKSEG1 + 0x1fff0000 + (i * 0x10);
-		if (readb(rbtx4939_bdipsw_addr) & 8) {
+		if (bdipsw == 0)
+			memcpy(ethaddr[i], (void *)area, 6);
+		else {
 			u16 buf[3];
-			area -= 0x03000000;
+			if (bdipsw & 8)
+				area -= 0x03000000;
+			else
+				area -= 0x01000000;
 			for (j = 0; j < 3; j++)
 				buf[j] = le16_to_cpup((u16 *)(area + j * 2));
 			memcpy(ethaddr[i], buf, 6);
-		} else
-			memcpy(ethaddr[i], (void *)area, 6);
+		}
 	}
 	tx4939_ethaddr_init(ethaddr[0], ethaddr[1]);
 #endif