mx28: Let imx_get_mac_from_fuse be common for mx28

Let imx_get_mac_from_fuse function be a common function, so that other
mx28 boards can reuse it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Stefano Babic <sbabic@denx.de>

arch/arm/cpu/arm926ejs/mx28/mx28.c

@@ -214,6 +214,52 @@ int cpu_eth_init(bd_t *bis)
 }
 #endif
 
+static void __mx28_adjust_mac(int dev_id, unsigned char *mac)
+{
+	mac[0] = 0x00;
+	mac[1] = 0x04; /* Use FSL vendor MAC address by default */
+
+	if (dev_id == 1) /* Let MAC1 be MAC0 + 1 by default */
+		mac[5] += 1;
+}
+
+void mx28_adjust_mac(int dev_id, unsigned char *mac)
+	__attribute__((weak, alias("__mx28_adjust_mac")));
+
+#ifdef	CONFIG_MX28_FEC_MAC_IN_OCOTP
+
+#define	MXS_OCOTP_MAX_TIMEOUT	1000000
+void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
+{
+	struct mx28_ocotp_regs *ocotp_regs =
+		(struct mx28_ocotp_regs *)MXS_OCOTP_BASE;
+	uint32_t data;
+
+	memset(mac, 0, 6);
+
+	writel(OCOTP_CTRL_RD_BANK_OPEN, &ocotp_regs->hw_ocotp_ctrl_set);
+
+	if (mx28_wait_mask_clr(&ocotp_regs->hw_ocotp_ctrl_reg, OCOTP_CTRL_BUSY,
+				MXS_OCOTP_MAX_TIMEOUT)) {
+		printf("MXS FEC: Can't get MAC from OCOTP\n");
+		return;
+	}
+
+	data = readl(&ocotp_regs->hw_ocotp_cust0);
+
+	mac[2] = (data >> 24) & 0xff;
+	mac[3] = (data >> 16) & 0xff;
+	mac[4] = (data >> 8) & 0xff;
+	mac[5] = data & 0xff;
+	mx28_adjust_mac(dev_id, mac);
+}
+#else
+void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
+{
+	memset(mac, 0, 6);
+}
+#endif
+
 U_BOOT_CMD(
 	clocks,	CONFIG_SYS_MAXARGS, 1, do_mx28_showclocks,
 	"display clocks",

board/denx/m28evk/m28evk.c

@@ -178,39 +178,4 @@ int board_eth_init(bd_t *bis)
 	return ret;
 }
 
-#ifdef	CONFIG_M28_FEC_MAC_IN_OCOTP
-
-#define	MXS_OCOTP_MAX_TIMEOUT	1000000
-void imx_get_mac_from_fuse(int dev_id, char *mac)
-{
-	struct mx28_ocotp_regs *ocotp_regs =
-		(struct mx28_ocotp_regs *)MXS_OCOTP_BASE;
-	uint32_t data;
-
-	memset(mac, 0, 6);
-
-	writel(OCOTP_CTRL_RD_BANK_OPEN, &ocotp_regs->hw_ocotp_ctrl_set);
-
-	if (mx28_wait_mask_clr(&ocotp_regs->hw_ocotp_ctrl_reg, OCOTP_CTRL_BUSY,
-				MXS_OCOTP_MAX_TIMEOUT)) {
-		printf("MXS FEC: Can't get MAC from OCOTP\n");
-		return;
-	}
-
-	data = readl(&ocotp_regs->hw_ocotp_cust0);
-
-	mac[0] = 0x00;
-	mac[1] = 0x04;
-	mac[2] = (data >> 24) & 0xff;
-	mac[3] = (data >> 16) & 0xff;
-	mac[4] = (data >> 8) & 0xff;
-	mac[5] = data & 0xff;
-}
-#else
-void imx_get_mac_from_fuse(int dev_id, char *mac)
-{
-	memset(mac, 0, 6);
-}
-#endif
-
 #endif