From: Hongwei Zhang <hongweiz@ami.com>
Date: Thu, 10 Dec 2020 23:11:09 +0000 (-0500)
Subject: net: ftgmac100: Read and retain MAC address
X-Git-Url: http://git.dujemihanovic.xyz/html/static/%7B%7B%20.RelPermalink%20%7D%7D?a=commitdiff_plain;h=0be3d1fafb54bc2fd3d5862304528d7a21e500d9;p=u-boot.git

net: ftgmac100: Read and retain MAC address

Read and retain MAC address across flash and QEMU support.

Signed-off-by: Hongwei Zhang <hongweiz@ami.com>
---

diff --git a/drivers/net/ftgmac100.c b/drivers/net/ftgmac100.c
index 69e299d6a3..0687230b4b 100644
--- a/drivers/net/ftgmac100.c
+++ b/drivers/net/ftgmac100.c
@@ -270,6 +270,28 @@ static int ftgmac100_set_mac(struct ftgmac100_data *priv,
 	return 0;
 }
 
+/*
+ * Get MAC address
+ */
+static int ftgmac100_get_mac(struct ftgmac100_data *priv,
+				unsigned char *mac)
+{
+	struct ftgmac100 *ftgmac100 = priv->iobase;
+	unsigned int maddr = readl(&ftgmac100->mac_madr);
+	unsigned int laddr = readl(&ftgmac100->mac_ladr);
+
+	debug("%s(%x %x)\n", __func__, maddr, laddr);
+
+	mac[0] = (maddr >> 8) & 0xff;
+	mac[1] =  maddr & 0xff;
+	mac[2] = (laddr >> 24) & 0xff;
+	mac[3] = (laddr >> 16) & 0xff;
+	mac[4] = (laddr >> 8) & 0xff;
+	mac[5] =  laddr & 0xff;
+
+	return 0;
+}
+
 /*
  * disable transmitter, receiver
  */
@@ -511,6 +533,14 @@ static int ftgmac100_write_hwaddr(struct udevice *dev)
 	return ftgmac100_set_mac(priv, pdata->enetaddr);
 }
 
+static int ftgmac_read_hwaddr(struct udevice *dev)
+{
+	struct eth_pdata *pdata = dev_get_plat(dev);
+	struct ftgmac100_data *priv = dev_get_priv(dev);
+
+	return ftgmac100_get_mac(priv, pdata->enetaddr);
+}
+
 static int ftgmac100_of_to_plat(struct udevice *dev)
 {
 	struct eth_pdata *pdata = dev_get_plat(dev);
@@ -571,6 +601,8 @@ static int ftgmac100_probe(struct udevice *dev)
 		goto out;
 	}
 
+	ftgmac_read_hwaddr(dev);
+
 out:
 	if (ret)
 		clk_release_bulk(&priv->clks);