net: cortina_ni: Add eth support for Cortina Access CAxxxx SoCs

Add Cortina Access Ethernet device driver for CAxxxx SoCs.
This driver supports both legacy and DM_ETH network models.

Signed-off-by: Aaron Tseng <aaron.tseng@cortina-access.com>
Signed-off-by: Alex Nemirovsky <alex.nemirovsky@cortina-access.com>
Signed-off-by: Abbie Chang <abbie.chang@cortina-access.com>

CC: Joe Hershberger <joe.hershberger@ni.com>
CC: Abbie Chang <abbie.chang@Cortina-Access.com>
CC: Tom Rini <trini@konsulko.com>

4 files changed, 1512 insertions, 0 deletions

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index d1a52c7264..971a572248 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -149,6 +149,13 @@ config BCMGENET
 	help
 	  This driver supports the BCMGENET Ethernet MAC.
 
+config CORTINA_NI_ENET
+	bool "Cortina-Access Ethernet driver"
+	depends on DM_ETH && CORTINA_PLATFORM
+	help
+	  This driver supports the Cortina-Access Ethernet MAC for
+	  all supported CAxxxx SoCs.
+
 config DWC_ETH_QOS
 	bool "Synopsys DWC Ethernet QOS device support"
 	depends on DM_ETH
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index f2a0df509d..6712b74a89 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_DRIVER_AX88180) += ax88180.o
 obj-$(CONFIG_BCM_SF2_ETH) += bcm-sf2-eth.o
 obj-$(CONFIG_BCM_SF2_ETH_GMAC) += bcm-sf2-eth-gmac.o
 obj-$(CONFIG_CALXEDA_XGMAC) += calxedaxgmac.o
+obj-$(CONFIG_CORTINA_NI_ENET) += cortina_ni.o
 obj-$(CONFIG_CS8900) += cs8900.o
 obj-$(CONFIG_TULIP) += dc2114x.o
 obj-$(CONFIG_ETH_DESIGNWARE) += designware.o
diff --git a/drivers/net/cortina_ni.c b/drivers/net/cortina_ni.c
new file mode 100644
index 0000000000..ee424d95bc
--- /dev/null
+++ b/drivers/net/cortina_ni.c
@@ -0,0 +1,1103 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/*
+ * Copyright (C) 2020 Cortina Access Inc.
+ * Author: Aaron Tseng <aaron.tseng@cortina-access.com>
+ *
+ * Ethernet MAC Driver for all supported CAxxxx SoCs
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <net.h>
+#include <miiphy.h>
+#include <env.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+#include <u-boot/crc.h>
+#include <led.h>
+
+#include "cortina_ni.h"
+
+#define HEADER_A_SIZE	8
+
+enum ca_led_state_t {
+	CA_LED_OFF = 0,
+	CA_LED_ON = 1,
+};
+
+enum ca_port_t {
+	NI_PORT_0 = 0,
+	NI_PORT_1,
+	NI_PORT_2,
+	NI_PORT_3,
+	NI_PORT_4,
+	NI_PORT_5,
+	NI_PORT_MAX,
+};
+
+static struct udevice *curr_dev;
+
+static u32 *ca_rdwrptr_adv_one(u32 *x, unsigned long base, unsigned long max)
+{
+	if (x + 1 >= (u32 *)max)
+		return (u32 *)base;
+	else
+		return (x + 1);
+}
+
+static void ca_reg_read(void *reg, u64 base, u64 offset)
+{
+	u32 *val = (u32 *)reg;
+
+	*val = readl(KSEG1_ATU_XLAT(base + offset));
+}
+
+static void ca_reg_write(void *reg, u64 base, u64 offset)
+{
+	u32 val = *(u32 *)reg;
+
+	writel(val, KSEG1_ATU_XLAT(base + offset));
+}
+
+static int ca_mdio_write_rgmii(u32 addr, u32 offset, u16 data)
+{
+	/* up to 10000 cycles*/
+	u32 loop_wait = __MDIO_ACCESS_TIMEOUT;
+	struct PER_MDIO_ADDR_t mdio_addr;
+	struct PER_MDIO_CTRL_t mdio_ctrl;
+	struct cortina_ni_priv *priv = dev_get_priv(curr_dev);
+
+	memset(&mdio_addr, 0, sizeof(mdio_addr));
+	mdio_addr.mdio_addr = addr;
+	mdio_addr.mdio_offset = offset;
+	mdio_addr.mdio_rd_wr = __MDIO_WR_FLAG;
+	ca_reg_write(&mdio_addr, (u64)priv->per_mdio_base_addr,
+		     PER_MDIO_ADDR_OFFSET);
+	ca_reg_write(&data, (u64)priv->per_mdio_base_addr,
+		     PER_MDIO_WRDATA_OFFSET);
+
+	memset(&mdio_ctrl, 0, sizeof(mdio_ctrl));
+	mdio_ctrl.mdiostart = 1;
+	ca_reg_write(&mdio_ctrl, (u64)priv->per_mdio_base_addr,
+		     PER_MDIO_CTRL_OFFSET);
+
+	debug("%s: phy_addr=%d, offset=%d, data=0x%x\n",
+	      __func__, addr, offset, data);
+
+	do {
+		ca_reg_read(&mdio_ctrl, (u64)priv->per_mdio_base_addr,
+			    PER_MDIO_CTRL_OFFSET);
+		if (mdio_ctrl.mdiodone) {
+			ca_reg_write(&mdio_ctrl, (u64)priv->per_mdio_base_addr,
+				     PER_MDIO_CTRL_OFFSET);
+			return 0;
+		}
+	} while (--loop_wait);
+
+	printf("CA NI %s: PHY write timeout!!!\n", __func__);
+	return -ETIMEDOUT;
+}
+
+int ca_mdio_write(u32 addr, u32 offset, u16 data)
+{
+	u32 reg_addr, reg_val;
+	struct NI_MDIO_OPER_T mdio_oper;
+
+	/* support range: 1~31*/
+	if (addr < CA_MDIO_ADDR_MIN || addr > CA_MDIO_ADDR_MAX)
+		return -EINVAL;
+
+	/* the phy addr 5 is connect to RGMII */
+	if (addr >= 5)
+		return ca_mdio_write_rgmii(addr, offset, data);
+
+	memset(&mdio_oper, 0, sizeof(mdio_oper));
+	mdio_oper.reg_off = offset;
+	mdio_oper.phy_addr = addr;
+	mdio_oper.reg_base = CA_NI_MDIO_REG_BASE;
+	reg_val = data;
+	memcpy(&reg_addr, &mdio_oper, sizeof(reg_addr));
+	ca_reg_write(&reg_val, (u64)reg_addr, 0);
+
+	return 0;
+}
+
+static int ca_mdio_read_rgmii(u32 addr, u32 offset, u16 *data)
+{
+	u32 loop_wait = __MDIO_ACCESS_TIMEOUT;
+	struct PER_MDIO_ADDR_t mdio_addr;
+	struct PER_MDIO_CTRL_t mdio_ctrl;
+	struct PER_MDIO_RDDATA_t read_data;
+	struct cortina_ni_priv *priv = dev_get_priv(curr_dev);
+
+	memset(&mdio_addr, 0, sizeof(mdio_addr));
+	mdio_addr.mdio_addr = addr;
+	mdio_addr.mdio_offset = offset;
+	mdio_addr.mdio_rd_wr = __MDIO_RD_FLAG;
+	ca_reg_write(&mdio_addr, (u64)priv->per_mdio_base_addr,
+		     PER_MDIO_ADDR_OFFSET);
+
+	memset(&mdio_ctrl, 0, sizeof(mdio_ctrl));
+	mdio_ctrl.mdiostart = 1;
+	ca_reg_write(&mdio_ctrl, (u64)priv->per_mdio_base_addr,
+		     PER_MDIO_CTRL_OFFSET);
+
+	do {
+		ca_reg_read(&mdio_ctrl, (u64)priv->per_mdio_base_addr,
+			    PER_MDIO_CTRL_OFFSET);
+		if (mdio_ctrl.mdiodone) {
+			ca_reg_write(&mdio_ctrl, (u64)priv->per_mdio_base_addr,
+				     PER_MDIO_CTRL_OFFSET);
+			ca_reg_read(&read_data, (u64)priv->per_mdio_base_addr,
+				    PER_MDIO_RDDATA_OFFSET);
+			*data = read_data.mdio_rddata;
+			return 0;
+		}
+	} while (--loop_wait);
+
+	printf("CA NI %s: TIMEOUT!!\n", __func__);
+	return -ETIMEDOUT;
+}
+
+int ca_mdio_read(u32 addr, u32 offset, u16 *data)
+{
+	u32 reg_addr, reg_val;
+	struct NI_MDIO_OPER_T mdio_oper;
+
+	if (!data)
+		return -EINVAL;
+
+	/* support range: 1~31*/
+	if (addr < CA_MDIO_ADDR_MIN || addr > CA_MDIO_ADDR_MAX)
+		return -EINVAL;
+
+	/* the phy addr 5 is connect to RGMII */
+	if (addr >= 5)
+		return ca_mdio_read_rgmii(addr, offset, data);
+
+	memset(&mdio_oper, 0, sizeof(mdio_oper));
+	mdio_oper.reg_off = offset;
+	mdio_oper.phy_addr = addr;
+	mdio_oper.reg_base = CA_NI_MDIO_REG_BASE;
+	reg_val = *data;
+	memcpy(&reg_addr, &mdio_oper, sizeof(reg_addr));
+	ca_reg_read(&reg_val, (u64)reg_addr, 0);
+	*data = reg_val;
+	return 0;
+}
+
+int ca_miiphy_read(const char *devname, u8 addr, u8 reg, u16 *value)
+{
+	return ca_mdio_read(addr, reg, value);
+}
+
+int ca_miiphy_write(const char *devname, u8 addr, u8 reg, u16 value)
+{
+	return ca_mdio_write(addr, reg, value);
+}
+
+static int cortina_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)
+{
+	u16 data;
+
+	ca_mdio_read(addr, reg, &data);
+	return data;
+}
+
+static int cortina_mdio_write(struct mii_dev *bus, int addr, int devad, int reg,
+			      u16 val)
+{
+	return ca_mdio_write(addr, reg, val);
+}
+
+static void ca_ni_setup_mac_addr(void)
+{
+	u8 mac[6];
+	struct NI_HV_GLB_MAC_ADDR_CFG0_t mac_addr_cfg0;
+	struct NI_HV_GLB_MAC_ADDR_CFG1_t mac_addr_cfg1;
+	struct NI_HV_PT_PORT_STATIC_CFG_t port_static_cfg;
+	struct NI_HV_XRAM_CPUXRAM_CFG_t cpuxram_cfg;
+	struct cortina_ni_priv *priv = dev_get_priv(curr_dev);
+
+	/* parsing ethaddr and set to NI registers. */
+	if (eth_env_get_enetaddr("ethaddr", mac)) {
+		/* The complete MAC address consists of
+		 * {MAC_ADDR0_mac_addr0[0-3], MAC_ADDR1_mac_addr1[4],
+		 * PT_PORT_STATIC_CFG_mac_addr6[5]}.
+		 */
+		mac_addr_cfg0.mac_addr0 = (mac[0] << 24) + (mac[1] << 16) +
+					  (mac[2] << 8) + mac[3];
+		ca_reg_write(&mac_addr_cfg0, (u64)priv->ni_hv_base_addr,
+			     NI_HV_GLB_MAC_ADDR_CFG0_OFFSET);
+
+		memset(&mac_addr_cfg1, 0, sizeof(mac_addr_cfg1));
+		mac_addr_cfg1.mac_addr1 = mac[4];
+		ca_reg_write(&mac_addr_cfg1, (u64)priv->ni_hv_base_addr,
+			     NI_HV_GLB_MAC_ADDR_CFG1_OFFSET);
+
+		ca_reg_read(&port_static_cfg, (u64)priv->ni_hv_base_addr,
+			    NI_HV_PT_PORT_STATIC_CFG_OFFSET +
+			    (APB0_NI_HV_PT_STRIDE * priv->active_port));
+
+		port_static_cfg.mac_addr6 = mac[5];
+		ca_reg_write(&port_static_cfg, (u64)priv->ni_hv_base_addr,
+			     NI_HV_PT_PORT_STATIC_CFG_OFFSET +
+			     (APB0_NI_HV_PT_STRIDE * priv->active_port));
+
+		/* received only Broadcast and Address matched packets */
+		ca_reg_read(&cpuxram_cfg, (u64)priv->ni_hv_base_addr,
+			    NI_HV_XRAM_CPUXRAM_CFG_OFFSET);
+		cpuxram_cfg.xram_mgmt_promisc_mode = 0;
+		cpuxram_cfg.rx_0_cpu_pkt_dis = 0;
+		cpuxram_cfg.tx_0_cpu_pkt_dis = 0;
+		ca_reg_write(&cpuxram_cfg, (u64)priv->ni_hv_base_addr,
+			     NI_HV_XRAM_CPUXRAM_CFG_OFFSET);
+	} else {
+		/* received all packets(promiscuous mode) */
+		ca_reg_read(&cpuxram_cfg, (u64)priv->ni_hv_base_addr,
+			    NI_HV_XRAM_CPUXRAM_CFG_OFFSET);
+		cpuxram_cfg.xram_mgmt_promisc_mode = 3;
+		cpuxram_cfg.rx_0_cpu_pkt_dis = 0;
+		cpuxram_cfg.tx_0_cpu_pkt_dis = 0;
+		ca_reg_write(&cpuxram_cfg, (u64)priv->ni_hv_base_addr,
+			     NI_HV_XRAM_CPUXRAM_CFG_OFFSET);
+	}
+}
+
+static void ca_ni_enable_tx_rx(void)
+{
+	struct NI_HV_PT_RXMAC_CFG_t rxmac_cfg;
+	struct NI_HV_PT_TXMAC_CFG_t txmac_cfg;
+	struct cortina_ni_priv *priv = dev_get_priv(curr_dev);
+
+	/* Enable TX and RX functions */
+	ca_reg_read(&rxmac_cfg, (u64)priv->ni_hv_base_addr,
+		    NI_HV_PT_RXMAC_CFG_OFFSET +
+		    (APB0_NI_HV_PT_STRIDE * priv->active_port));
+	rxmac_cfg.rx_en = 1;
+	ca_reg_write(&rxmac_cfg, (u64)priv->ni_hv_base_addr,
+		     NI_HV_PT_RXMAC_CFG_OFFSET +
+		     (APB0_NI_HV_PT_STRIDE * priv->active_port));
+
+	ca_reg_read(&txmac_cfg, (u64)priv->ni_hv_base_addr,
+		    NI_HV_PT_TXMAC_CFG_OFFSET +
+		    (APB0_NI_HV_PT_STRIDE * priv->active_port));
+	txmac_cfg.tx_en = 1;
+	ca_reg_write(&txmac_cfg, (u64)priv->ni_hv_base_addr,
+		     NI_HV_PT_TXMAC_CFG_OFFSET +
+		     (APB0_NI_HV_PT_STRIDE * priv->active_port));
+}
+
+#define AUTO_SCAN_TIMEOUT 3000 /* 3 seconds */
+static int ca_ni_auto_scan_active_port(struct cortina_ni_priv *priv)
+{
+	u8 i;
+	u16 data;
+	u32 start_time;
+
+	start_time = get_timer(0);
+	while (get_timer(start_time) < AUTO_SCAN_TIMEOUT) {
+		for (i = 0; i < priv->valid_port_num; i++) {
+			if (!priv->port_map[i].phy_addr)
+				continue;
+
+			ca_mdio_read(priv->port_map[i].phy_addr, 1, &data);
+			if (data & 0x04) {
+				priv->active_port = priv->port_map[i].port;
+				return 0;
+			}
+		}
+	}
+
+	printf("CA NI %s: auto scan active_port timeout.\n", __func__);
+	return -1;
+}
+
+static void ca_ni_led(int port, int status)
+{
+	char label[10];
+	struct udevice *led_dev;
+
+	if (IS_ENABLED(CONFIG_LED_CORTINA)) {
+		snprintf(label, sizeof(label), "led%d", port);
+		debug("%s: set port %d led %s.\n",
+		      __func__, port, status ? "on" : "off");
+		led_get_by_label(label, &led_dev);
+		led_set_state(led_dev, status);
+	}
+}
+
+static void ca_ni_reset(void)
+{
+	int i;
+	struct NI_HV_GLB_INIT_DONE_t init_done;
+	struct NI_HV_GLB_INTF_RST_CONFIG_t intf_rst_config;
+	struct NI_HV_GLB_STATIC_CFG_t static_cfg;
+	struct GLOBAL_BLOCK_RESET_t glb_blk_reset;
+	struct cortina_ni_priv *priv = dev_get_priv(curr_dev);
+
+	/* NI global resets */
+	ca_reg_read(&glb_blk_reset, (u64)priv->glb_base_addr,
+		    GLOBAL_BLOCK_RESET_OFFSET);
+	glb_blk_reset.reset_ni = 1;
+	ca_reg_write(&glb_blk_reset, (u64)priv->glb_base_addr,
+		     GLOBAL_BLOCK_RESET_OFFSET);
+	/* Remove resets */
+	glb_blk_reset.reset_ni = 0;
+	ca_reg_write(&glb_blk_reset, (u64)priv->glb_base_addr,
+		     GLOBAL_BLOCK_RESET_OFFSET);
+
+	/* check the ready bit of NI module */
+	for (i = 0; i < NI_READ_POLL_COUNT; i++) {
+		ca_reg_read(&init_done, (u64)priv->ni_hv_base_addr,
+			    NI_HV_GLB_INIT_DONE_OFFSET);
+		if (init_done.ni_init_done)
+			break;
+	}
+	if (i == NI_READ_POLL_COUNT) {
+		printf("CA NI %s: NI init done not ready, init_done=0x%x!!!\n",
+		       __func__, init_done.ni_init_done);
+	}
+
+	ca_reg_read(&intf_rst_config, (u64)priv->ni_hv_base_addr,
+		    NI_HV_GLB_INTF_RST_CONFIG_OFFSET);
+	switch (priv->active_port) {
+	case NI_PORT_0:
+		intf_rst_config.intf_rst_p0 = 0;
+		intf_rst_config.mac_rx_rst_p0 = 0;
+		intf_rst_config.mac_tx_rst_p0 = 0;
+		break;
+	case NI_PORT_1:
+		intf_rst_config.intf_rst_p1 = 0;
+		intf_rst_config.mac_rx_rst_p1 = 0;
+		intf_rst_config.mac_tx_rst_p1 = 0;
+		break;
+	case NI_PORT_2:
+		intf_rst_config.intf_rst_p2 = 0;
+		intf_rst_config.mac_rx_rst_p2 = 0;
+		intf_rst_config.mac_tx_rst_p2 = 0;
+		break;
+	case NI_PORT_3:
+		intf_rst_config.intf_rst_p3 = 0;
+		intf_rst_config.mac_tx_rst_p3 = 0;
+		intf_rst_config.mac_rx_rst_p3 = 0;
+		break;
+	case NI_PORT_4:
+		intf_rst_config.intf_rst_p4 = 0;
+		intf_rst_config.mac_tx_rst_p4 = 0;
+		intf_rst_config.mac_rx_rst_p4 = 0;
+		break;
+	}
+
+	ca_reg_write(&intf_rst_config, (u64)priv->ni_hv_base_addr,
+		     NI_HV_GLB_INTF_RST_CONFIG_OFFSET);
+
+	/* Only one GMAC can connect to CPU */
+	ca_reg_read(&static_cfg, (u64)priv->ni_hv_base_addr,
+		    NI_HV_GLB_STATIC_CFG_OFFSET);
+	static_cfg.port_to_cpu = priv->active_port;
+	static_cfg.txmib_mode = 1;
+	static_cfg.rxmib_mode = 1;
+
+	ca_reg_write(&static_cfg, (u64)priv->ni_hv_base_addr,
+		     NI_HV_GLB_STATIC_CFG_OFFSET);
+}
+
+static void ca_internal_gphy_cal(struct cortina_ni_priv *priv)
+{
+	int i, port, num;
+	u32 reg_off, value;
+
+	num = priv->gphy_num;
+	for (port = 0; port < 4; port++) {
+		for (i = 0; i < num; i++) {
+			reg_off = priv->gphy_values[i].reg_off + (port * 0x80);
+			value = priv->gphy_values[i].value;
+			ca_reg_write(&value, reg_off, 0);
+			mdelay(50);
+		}
+	}
+}
+
+static int ca_mdio_register(struct udevice *dev)
+{
+	int ret;
+	struct cortina_ni_priv *priv = dev_get_priv(dev);
+	struct mii_dev *mdio_bus = mdio_alloc();
+
+	if (!mdio_bus)
+		return -ENOMEM;
+
+	mdio_bus->read = cortina_mdio_read;
+	mdio_bus->write = cortina_mdio_write;
+	snprintf(mdio_bus->name, sizeof(mdio_bus->name), dev->name);
+
+	mdio_bus->priv = (void *)priv;
+
+	ret = mdio_register(mdio_bus);
+	if (ret)
+		return ret;
+
+	priv->mdio_bus = mdio_bus;
+	return 0;
+}
+
+static void ca_rgmii_init(struct cortina_ni_priv *priv)
+{
+	struct GLOBAL_GLOBAL_CONFIG_t	glb_config;
+	struct GLOBAL_IO_DRIVE_CONTROL_t io_drive_control;
+
+	/* Generating 25Mhz reference clock for switch */
+	ca_reg_read(&glb_config, (u64)priv->glb_base_addr,
+		    GLOBAL_GLOBAL_CONFIG_OFFSET);
+	glb_config.refclk_sel = 0x01;
+	glb_config.ext_reset = 0x01;
+	ca_reg_write(&glb_config, (u64)priv->glb_base_addr,
+		     GLOBAL_GLOBAL_CONFIG_OFFSET);
+
+	mdelay(20);
+
+	/* Do external reset */
+	ca_reg_read(&glb_config, (u64)priv->glb_base_addr,
+		    GLOBAL_GLOBAL_CONFIG_OFFSET);
+	glb_config.ext_reset = 0x0;
+	ca_reg_write(&glb_config, (u64)priv->glb_base_addr,
+		     GLOBAL_GLOBAL_CONFIG_OFFSET);
+
+	ca_reg_read(&io_drive_control, (u64)priv->glb_base_addr,
+		    GLOBAL_IO_DRIVE_CONTROL_OFFSET);
+	io_drive_control.gmac_mode = 2;
+	io_drive_control.gmac_dn = 1;
+	io_drive_control.gmac_dp = 1;
+	ca_reg_write(&io_drive_control, (u64)priv->glb_base_addr,
+		     GLOBAL_IO_DRIVE_CONTROL_OFFSET);
+}
+
+static int ca_phy_probe(struct udevice *dev)
+{
+	int auto_scan_active_port = 0, tmp_port;
+	char *buf;
+	struct cortina_ni_priv *priv = dev_get_priv(dev);
+	struct phy_device *int_phydev, *ext_phydev;
+
+	/* Initialize internal phy device */
+	int_phydev = phy_connect(priv->mdio_bus,
+				 priv->port_map[NI_PORT_3].phy_addr,
+				 dev, priv->phy_interface);
+	if (int_phydev) {
+		int_phydev->supported &= PHY_GBIT_FEATURES;
+		int_phydev->advertising = int_phydev->supported;
+		phy_config(int_phydev);
+	} else {
+		printf("CA NI %s: There is no internal phy device\n", __func__);
+	}
+
+	/* Initialize external phy device */
+	ext_phydev = phy_connect(priv->mdio_bus,
+				 priv->port_map[NI_PORT_4].phy_addr,
+				 dev, priv->phy_interface);
+	if (ext_phydev) {
+		ext_phydev->supported &= PHY_GBIT_FEATURES;
+		ext_phydev->advertising = int_phydev->supported;
+		phy_config(ext_phydev);
+	} else {
+		printf("CA NI %s: There is no external phy device\n", __func__);
+	}
+
+	/* auto scan the first link up port as active_port */
+	buf = env_get("auto_scan_active_port");
+	if (buf != 0) {
+		auto_scan_active_port = simple_strtoul(buf, NULL, 0);
+		printf("CA NI %s: auto_scan_active_port=%d\n", __func__,
+		       auto_scan_active_port);
+	}
+
+	if (auto_scan_active_port) {
+		ca_ni_auto_scan_active_port(priv);
+	} else {
+		buf = env_get("active_port");
+		if (buf != 0) {
+			tmp_port = simple_strtoul(buf, NULL, 0);
+			if (tmp_port < 0 &&
+			    !(priv->valid_port_map && BIT(tmp_port))) {
+				printf("CA NI ERROR: not support this port.");
+				free(dev);
+				free(priv);
+				return 1;
+			}
+
+			priv->active_port = tmp_port;
+		}
+	}
+
+	printf("CA NI %s: active_port=%d\n", __func__, priv->active_port);
+	if (priv->active_port == NI_PORT_4)
+		priv->phydev = ext_phydev;
+	else
+		priv->phydev = int_phydev;
+
+	return 0;
+}
+
+static int cortina_eth_start(struct udevice *dev)
+{
+	int ret;
+	struct NI_HV_XRAM_CPUXRAM_ADRCFG_RX_t cpuxram_adrcfg_rx;
+	struct NI_HV_XRAM_CPUXRAM_ADRCFG_TX_0_t cpuxram_adrcfg_tx;
+	struct NI_HV_XRAM_CPUXRAM_CFG_t	cpuxram_cfg;
+	struct NI_HV_PT_PORT_STATIC_CFG_t port_static_cfg;
+	struct NI_HV_PT_PORT_GLB_CFG_t port_glb_cfg;
+	struct cortina_ni_priv *priv = dev_get_priv(dev);
+	struct phy_device *phydev = priv->phydev;
+
+	ret = phy_startup(priv->phydev);
+	if (ret) {
+		ca_ni_led(priv->active_port, CA_LED_OFF);
+		printf("CA NI Could not initialize PHY %s, active_port=%d\n",
+		       priv->phydev->dev->name, priv->active_port);
+		return ret;
+	}
+
+	if (!priv->phydev->link) {
+		printf("CA NI %s: link down.\n", priv->phydev->dev->name);
+		return 0;
+	}
+
+	ca_ni_led(priv->active_port, CA_LED_ON);
+	printf("CA NI PHY ID 0x%08X %dMbps %s duplex\n",
+	       phydev->phy_id, phydev->speed,
+	       phydev->duplex == DUPLEX_HALF ? "half" : "full");
+
+	/* RX XRAM ADDRESS CONFIG (start and end address) */
+	memset(&cpuxram_adrcfg_rx, 0, sizeof(cpuxram_adrcfg_rx));
+	cpuxram_adrcfg_rx.rx_top_addr = RX_TOP_ADDR;
+	cpuxram_adrcfg_rx.rx_base_addr = RX_BASE_ADDR;
+	ca_reg_write(&cpuxram_adrcfg_rx, (u64)priv->ni_hv_base_addr,
+		     NI_HV_XRAM_CPUXRAM_ADRCFG_RX_OFFSET);
+
+	/* TX XRAM ADDRESS CONFIG (start and end address) */
+	memset(&cpuxram_adrcfg_tx, 0, sizeof(cpuxram_adrcfg_tx));
+	cpuxram_adrcfg_tx.tx_top_addr = TX_TOP_ADDR;
+	cpuxram_adrcfg_tx.tx_base_addr = TX_BASE_ADDR;
+	ca_reg_write(&cpuxram_adrcfg_tx, (u64)priv->ni_hv_base_addr,
+		     NI_HV_XRAM_CPUXRAM_ADRCFG_TX_0_OFFSET);
+
+	/*
+	 * Configuration for Management Ethernet Interface:
+	 * - RGMII 1000 mode or RGMII 100 mode
+	 * - MAC mode
+	 */
+	ca_reg_read(&port_static_cfg, (u64)priv->ni_hv_base_addr,
+		    NI_HV_PT_PORT_STATIC_CFG_OFFSET +
+		    (APB0_NI_HV_PT_STRIDE * priv->active_port));
+	if (phydev->speed == SPEED_1000) {
+		/* port 4 connects to RGMII PHY */
+		if (phydev->addr == 5)
+			port_static_cfg.int_cfg = GE_MAC_INTF_RGMII_1000;
+		else
+			port_static_cfg.int_cfg = GE_MAC_INTF_GMII;
+	} else {
+		/* port 4 connects to RGMII PHY */
+		if (phydev->addr == 5)
+			port_static_cfg.int_cfg = GE_MAC_INTF_RGMII_100;
+		else
+			port_static_cfg.int_cfg = GE_MAC_INTF_MII;
+	}
+
+	ca_reg_write(&port_static_cfg, (u64)priv->ni_hv_base_addr,
+		     NI_HV_PT_PORT_STATIC_CFG_OFFSET +
+		     (APB0_NI_HV_PT_STRIDE * priv->active_port));
+
+	ca_reg_read(&port_glb_cfg, (u64)priv->ni_hv_base_addr,
+		    NI_HV_PT_PORT_GLB_CFG_OFFSET +
+		    (APB0_NI_HV_PT_STRIDE * priv->active_port));
+	port_glb_cfg.speed = phydev->speed == SPEED_10 ? 1 : 0;
+	port_glb_cfg.duplex = phydev->duplex == DUPLEX_HALF ? 1 : 0;
+	ca_reg_write(&port_glb_cfg, (u64)priv->ni_hv_base_addr,
+		     NI_HV_PT_PORT_GLB_CFG_OFFSET +
+		     (APB0_NI_HV_PT_STRIDE * priv->active_port));
+
+	/* Need to toggle the tx and rx cpu_pkt_dis bit */
+	/* after changing Address config register.      */
+	ca_reg_read(&cpuxram_cfg, (u64)priv->ni_hv_base_addr,
+		    NI_HV_XRAM_CPUXRAM_CFG_OFFSET);
+	cpuxram_cfg.rx_0_cpu_pkt_dis = 1;
+	cpuxram_cfg.tx_0_cpu_pkt_dis = 1;
+	ca_reg_write(&cpuxram_cfg, (u64)priv->ni_hv_base_addr,
+		     NI_HV_XRAM_CPUXRAM_CFG_OFFSET);
+
+	ca_reg_read(&cpuxram_cfg, (u64)priv->ni_hv_base_addr,
+		    NI_HV_XRAM_CPUXRAM_CFG_OFFSET);
+	cpuxram_cfg.rx_0_cpu_pkt_dis = 0;
+	cpuxram_cfg.tx_0_cpu_pkt_dis = 0;
+	ca_reg_write(&cpuxram_cfg, (u64)priv->ni_hv_base_addr,
+		     NI_HV_XRAM_CPUXRAM_CFG_OFFSET);
+
+	ca_ni_enable_tx_rx();
+
+	return 0;
+}
+
+/*********************************************
+ * Packet receive routine from Management FE
+ * Expects a previously allocated buffer and
+ * fills the length
+ * Retruns 0 on success -1 on failure
+ *******************************************/
+static int cortina_eth_recv(struct udevice *dev, int flags, uchar **packetp)
+{
+	u8 *ptr;
+	u32 next_link, pktlen = 0;
+	u32 sw_rx_rd_ptr, hw_rx_wr_ptr, *rx_xram_ptr, *data_ptr;
+	int loop, index = 0, blk_num;
+	struct cortina_ni_priv *priv = dev_get_priv(dev);
+	struct NI_HEADER_X_T header_x;
+	struct NI_PACKET_STATUS packet_status;
+	struct NI_HV_XRAM_CPUXRAM_CPU_STA_RX_0_t cpuxram_cpu_sta_rx;
+	struct NI_HV_XRAM_CPUXRAM_CPU_CFG_RX_0_t cpuxram_cpu_cfg_rx;
+
+	/* get the hw write pointer */
+	memset(&cpuxram_cpu_sta_rx, 0, sizeof(cpuxram_cpu_sta_rx));
+	ca_reg_read(&cpuxram_cpu_sta_rx, (u64)priv->ni_hv_base_addr,
+		    NI_HV_XRAM_CPUXRAM_CPU_STA_RX_0_OFFSET);
+	hw_rx_wr_ptr = cpuxram_cpu_sta_rx.pkt_wr_ptr;
+
+	/* get the sw read pointer */
+	memset(&cpuxram_cpu_cfg_rx, 0, sizeof(cpuxram_cpu_cfg_rx));
+	ca_reg_read(&cpuxram_cpu_cfg_rx, (u64)priv->ni_hv_base_addr,
+		    NI_HV_XRAM_CPUXRAM_CPU_CFG_RX_0_OFFSET);
+	sw_rx_rd_ptr = cpuxram_cpu_cfg_rx.pkt_rd_ptr;
+
+	debug("%s: NI_HV_XRAM_CPUXRAM_CPU_STA_RX_0 = 0x%p, ", __func__,
+	      priv->ni_hv_base_addr + NI_HV_XRAM_CPUXRAM_CPU_STA_RX_0_OFFSET);
+	debug("NI_HV_XRAM_CPUXRAM_CPU_CFG_RX_0 = 0x%p\n",
+	      priv->ni_hv_base_addr + NI_HV_XRAM_CPUXRAM_CPU_CFG_RX_0_OFFSET);
+	debug("%s : RX hw_wr_ptr = %d, sw_rd_ptr = %d\n",
+	      __func__, hw_rx_wr_ptr, sw_rx_rd_ptr);
+
+	while (sw_rx_rd_ptr != hw_rx_wr_ptr) {
+		/* Point to the absolute memory address of XRAM
+		 * where read pointer is
+		 */
+		rx_xram_ptr = (u32 *)
+			      ((unsigned long)priv->ni_xram_base
+			       + sw_rx_rd_ptr * 8);
+
+		/* Wrap around if required */
+		if (rx_xram_ptr >= (u32 *)(unsigned long)priv->rx_xram_end_adr)
+			rx_xram_ptr = (u32 *)
+				      (unsigned long)priv->rx_xram_base_adr;
+
+		/* Checking header XR. Do not update the read pointer yet */
+		/* skip unused 32-bit in Header XR */
+		rx_xram_ptr = ca_rdwrptr_adv_one(rx_xram_ptr,
+						 priv->rx_xram_base_adr,
+						 priv->rx_xram_end_adr);
+
+		memcpy(&header_x, rx_xram_ptr, sizeof(header_x));
+		next_link = header_x.next_link;
+		/* Header XR [31:0] */
+
+		if (*rx_xram_ptr == 0xffffffff)
+			printf("CA NI %s: XRAM Error !\n", __func__);
+
+		debug("%s : RX next link 0x%x\n", __func__, next_link);
+		debug("%s : bytes_valid %x\n", __func__, header_x.bytes_valid);
+
+		if (header_x.ownership == 0) {
+			/* point to Packet status [31:0] */
+			rx_xram_ptr = ca_rdwrptr_adv_one(rx_xram_ptr,
+							 priv->rx_xram_base_adr,
+							 priv->rx_xram_end_adr);
+
+			memcpy(&packet_status, rx_xram_ptr,
+			       sizeof(rx_xram_ptr));
+			if (packet_status.valid == 0) {
+				debug("%s: Invalid Packet !!, ", __func__);
+				debug("next_link=%d\n", next_link);
+
+				/* Update the software read pointer */
+				ca_reg_write(&next_link,
+					     (u64)priv->ni_hv_base_addr,
+					NI_HV_XRAM_CPUXRAM_CPU_CFG_RX_0_OFFSET);
+				return 0;
+			}
+
+			if (packet_status.drop ||
+			    packet_status.runt ||
+			    packet_status.oversize ||
+			    packet_status.jabber ||
+			    packet_status.crc_error ||
+			    packet_status.jumbo) {
+				debug("%s: Error Packet!!, ", __func__);
+				debug("next_link=%d\n", next_link);
+
+				/* Update the software read pointer */
+				ca_reg_write(&next_link,
+					     (u64)priv->ni_hv_base_addr,
+					NI_HV_XRAM_CPUXRAM_CPU_CFG_RX_0_OFFSET);
+				return 0;
+			}
+
+			/* check whether packet size is larger than 1514 */
+			if (packet_status.packet_size > 1518) {
+				debug("%s: Error Packet !! Packet size=%d, ",
+				      __func__, packet_status.packet_size);
+				debug("larger than 1518, next_link=%d\n",
+				      next_link);
+
+				/* Update the software read pointer */
+				ca_reg_write(&next_link,
+					     (u64)priv->ni_hv_base_addr,
+					NI_HV_XRAM_CPUXRAM_CPU_CFG_RX_0_OFFSET);
+				return 0;
+			}
+
+			rx_xram_ptr = ca_rdwrptr_adv_one(rx_xram_ptr,
+							 priv->rx_xram_base_adr,
+							 priv->rx_xram_end_adr);
+
+			pktlen = packet_status.packet_size;
+
+			debug("%s : rx packet length = %d\n",
+			      __func__, packet_status.packet_size);
+
+			rx_xram_ptr = ca_rdwrptr_adv_one(rx_xram_ptr,
+							 priv->rx_xram_base_adr,
+							 priv->rx_xram_end_adr);
+
+			data_ptr = (u32 *)net_rx_packets[index];
+
+			/* Read out the packet */
+			/* Data is in little endian form in the XRAM */
+
+			/* Send the packet to upper layer */
+
+			debug("%s: packet data[]=", __func__);
+
+			for (loop = 0; loop <= pktlen / 4; loop++) {
+				ptr = (u8 *)rx_xram_ptr;
+				if (loop < 10)
+					debug("[0x%x]-[0x%x]-[0x%x]-[0x%x]",
+					      ptr[0], ptr[1], ptr[2], ptr[3]);
+				*data_ptr++ = *rx_xram_ptr++;
+				/* Wrap around if required */
+				if (rx_xram_ptr >= (u32 *)
+				    (unsigned long)priv->rx_xram_end_adr) {
+					rx_xram_ptr = (u32 *)(unsigned long)
+						       (priv->rx_xram_base_adr);
+				}
+			}
+
+			debug("\n");
+			net_process_received_packet(net_rx_packets[index],
+						    pktlen);
+			if (++index >= PKTBUFSRX)
+				index = 0;
+			blk_num = net_rx_packets[index][0x2c] * 255 +
+				net_rx_packets[index][0x2d];
+			debug("%s: tftp block number=%d\n", __func__, blk_num);
+
+			/* Update the software read pointer */
+			ca_reg_write(&next_link,
+				     (u64)priv->ni_hv_base_addr,
+				     NI_HV_XRAM_CPUXRAM_CPU_CFG_RX_0_OFFSET);
+		}
+
+		/* get the hw write pointer */
+		ca_reg_read(&cpuxram_cpu_sta_rx, (u64)priv->ni_hv_base_addr,
+			    NI_HV_XRAM_CPUXRAM_CPU_STA_RX_0_OFFSET);
+		hw_rx_wr_ptr = cpuxram_cpu_sta_rx.pkt_wr_ptr;
+
+		/* get the sw read pointer */
+		ca_reg_read(&sw_rx_rd_ptr, (u64)priv->ni_hv_base_addr,
+			    NI_HV_XRAM_CPUXRAM_CPU_CFG_RX_0_OFFSET);
+	}
+	return 0;
+}
+
+static int cortina_eth_send(struct udevice *dev, void *packet, int length)
+{
+	u32 hw_tx_rd_ptr = 0, sw_tx_wr_ptr = 0;
+	u32 loop, new_pkt_len, ca_crc32;
+	u32 *tx_xram_ptr, *data_ptr;
+	u16 next_link = 0;
+	u8 *ptr, *pkt_buf_ptr, valid_bytes = 0;
+	int pad = 0;
+	static u8 pkt_buf[2048];
+	struct NI_HEADER_X_T hdr_xt;
+	struct NI_HV_XRAM_CPUXRAM_CPU_CFG_TX_0_t cpuxram_cpu_cfg_tx;
+	struct cortina_ni_priv *priv = dev_get_priv(dev);
+
+	if (!packet || length > 2032)
+		return -1;
+
+	/* Get the hardware read pointer */
+	ca_reg_read(&hw_tx_rd_ptr, (u64)priv->ni_hv_base_addr,
+		    NI_HV_XRAM_CPUXRAM_CPU_STAT_TX_0_OFFSET);
+
+	/* Get the software write pointer */
+	ca_reg_read(&sw_tx_wr_ptr, (u64)priv->ni_hv_base_addr,
+		    NI_HV_XRAM_CPUXRAM_CPU_CFG_TX_0_OFFSET);
+
+	debug("%s: NI_HV_XRAM_CPUXRAM_CPU_STAT_TX_0=0x%p, ",
+	      __func__,
+	      KSEG1_ATU_XLAT(priv->ni_hv_base_addr +
+			     NI_HV_XRAM_CPUXRAM_CPU_STAT_TX_0_OFFSET));
+	debug("NI_HV_XRAM_CPUXRAM_CPU_CFG_TX_0=0x%p\n",
+	      KSEG1_ATU_XLAT(priv->ni_hv_base_addr +
+			     NI_HV_XRAM_CPUXRAM_CPU_CFG_TX_0_OFFSET));
+	debug("%s : hw_tx_rd_ptr = %d\n", __func__, hw_tx_rd_ptr);
+	debug("%s : sw_tx_wr_ptr = %d\n", __func__, sw_tx_wr_ptr);
+
+	if (hw_tx_rd_ptr != sw_tx_wr_ptr) {
+		printf("CA NI %s: Tx FIFO is not available!\n", __func__);
+		return 1;
+	}
+
+	/* a workaround on 2015/10/01
+	 * the packet size+CRC should be 8-byte alignment
+	 */
+	if (((length + 4) % 8) != 0)
+		length += (8 - ((length + 4) % 8));
+
+	memset(pkt_buf, 0x00, sizeof(pkt_buf));
+
+	/* add 8-byte header_A at the beginning of packet */
+	memcpy(&pkt_buf[HEADER_A_SIZE], (const void *)packet, length);
+
+	pad = 64 - (length + 4);	/* if packet length < 60 */
+	pad = (pad < 0) ? 0 : pad;
+
+	debug("%s: length=%d, pad=%d\n", __func__, length, pad);
+
+	new_pkt_len = length + pad;	/* new packet length */
+
+	pkt_buf_ptr = (u8 *)pkt_buf;
+
+	/* Calculate the CRC32, skip 8-byte header_A */
+	ca_crc32 = crc32(0, (u8 *)(pkt_buf_ptr + HEADER_A_SIZE), new_pkt_len);
+
+	debug("%s: crc32 is 0x%x\n", __func__, ca_crc32);
+	debug("%s: ~crc32 is 0x%x\n", __func__, ~ca_crc32);
+	debug("%s: pkt len %d\n", __func__, new_pkt_len);
+	/* should add 8-byte header_! */
+	/* CRC will re-calculated by hardware */
+	memcpy((pkt_buf_ptr + new_pkt_len + HEADER_A_SIZE),
+	       (u8 *)(&ca_crc32), sizeof(ca_crc32));
+	new_pkt_len = new_pkt_len + 4;	/* add CRC */
+
+	valid_bytes = new_pkt_len % 8;
+	valid_bytes = valid_bytes ? valid_bytes : 0;
+	debug("%s: valid_bytes %d\n", __func__, valid_bytes);
+
+	/* should add 8-byte headerA */
+	next_link = sw_tx_wr_ptr +
+		(new_pkt_len + 7 + HEADER_A_SIZE) / 8; /* for headr XT */
+	/* add header */
+	next_link = next_link + 1;
+	/* Wrap around if required */
+	if (next_link > priv->tx_xram_end) {
+		next_link = priv->tx_xram_start +
+			(next_link - (priv->tx_xram_end + 1));
+	}
+
+	debug("%s: TX next_link %x\n", __func__, next_link);
+	memset(&hdr_xt, 0, sizeof(hdr_xt));
+	hdr_xt.ownership = 1;
+	hdr_xt.bytes_valid = valid_bytes;
+	hdr_xt.next_link = next_link;
+
+	tx_xram_ptr = (u32 *)((unsigned long)priv->ni_xram_base
+		      + sw_tx_wr_ptr * 8);
+
+	/* Wrap around if required */
+	if (tx_xram_ptr >= (u32 *)(unsigned long)priv->tx_xram_end_adr)
+		tx_xram_ptr = (u32 *)(unsigned long)priv->tx_xram_base_adr;
+
+	tx_xram_ptr = ca_rdwrptr_adv_one(tx_xram_ptr,
+					 priv->tx_xram_base_adr,
+					 priv->tx_xram_end_adr);
+
+	memcpy(tx_xram_ptr, &hdr_xt, sizeof(*tx_xram_ptr));
+
+	tx_xram_ptr = ca_rdwrptr_adv_one(tx_xram_ptr,
+					 priv->tx_xram_base_adr,
+					 priv->tx_xram_end_adr);
+
+	/* Now to copy the data. The first byte on the line goes first */
+	data_ptr = (u32 *)pkt_buf_ptr;
+	debug("%s: packet data[]=", __func__);
+
+	/* copy header_A to XRAM */
+	for (loop = 0; loop <= (new_pkt_len + HEADER_A_SIZE) / 4; loop++) {
+		ptr = (u8 *)data_ptr;
+		if ((loop % 4) == 0)
+			debug("\n");
+		debug("[0x%x]-[0x%x]-[0x%x]-[0x%x]-",
+		      ptr[0], ptr[1], ptr[2], ptr[3]);
+
+		*tx_xram_ptr = *data_ptr++;
+		tx_xram_ptr = ca_rdwrptr_adv_one(tx_xram_ptr,
+						 priv->tx_xram_base_adr,
+						 priv->tx_xram_end_adr);
+	}
+	debug("\n");
+
+	/* Publish the software write pointer */
+	cpuxram_cpu_cfg_tx.pkt_wr_ptr = next_link;
+	ca_reg_write(&cpuxram_cpu_cfg_tx,
+		     (u64)priv->ni_hv_base_addr,
+		     NI_HV_XRAM_CPUXRAM_CPU_CFG_TX_0_OFFSET);
+
+	return 0;
+}
+
+static void cortina_eth_stop(struct udevice *netdev)
+{
+	/* Nothing to do for now. */
+}
+
+static int cortina_eth_probe(struct udevice *dev)
+{
+	int ret, reg_value;
+	struct cortina_ni_priv *priv;
+
+	priv = dev_get_priv(dev);
+	priv->rx_xram_base_adr	= priv->ni_xram_base + (RX_BASE_ADDR * 8);
+	priv->rx_xram_end_adr	= priv->ni_xram_base + ((RX_TOP_ADDR + 1) * 8);
+	priv->rx_xram_start	= RX_BASE_ADDR;
+	priv->rx_xram_end	= RX_TOP_ADDR;
+	priv->tx_xram_base_adr	= priv->ni_xram_base + (TX_BASE_ADDR * 8);
+	priv->tx_xram_end_adr	= priv->ni_xram_base + ((TX_TOP_ADDR + 1) * 8);
+	priv->tx_xram_start	= TX_BASE_ADDR;
+	priv->tx_xram_end	= TX_TOP_ADDR;
+
+	curr_dev = dev;
+	debug("%s: rx_base_addr:%x\t rx_top_addr %x\n",
+	      __func__, priv->rx_xram_start, priv->rx_xram_end);
+	debug("%s: tx_base_addr:%x\t tx_top_addr %x\n",
+	      __func__, priv->tx_xram_start, priv->tx_xram_end);
+	debug("%s: rx physical start address = %x end address = %x\n",
+	      __func__, priv->rx_xram_base_adr, priv->rx_xram_end_adr);
+	debug("%s: tx physical start address = %x end address = %x\n",
+	      __func__, priv->tx_xram_base_adr, priv->tx_xram_end_adr);
+
+	/* MDIO register */
+	ret = ca_mdio_register(dev);
+	if (ret)
+		return ret;
+
+	/* set MDIO pre-scale value */
+	ca_reg_read(&reg_value, (u64)priv->per_mdio_base_addr,
+		    PER_MDIO_CFG_OFFSET);
+	reg_value = reg_value | 0x00280000;
+	ca_reg_write(&reg_value, (u64)priv->per_mdio_base_addr,
+		     PER_MDIO_CFG_OFFSET);
+
+	ca_phy_probe(dev);
+	priv->phydev->addr = priv->port_map[priv->active_port].phy_addr;
+
+	ca_ni_led(priv->active_port, CA_LED_ON);
+
+	ca_ni_reset();
+
+	printf("CA NI %s: active_port=%d, phy_addr=%d\n",
+	       __func__, priv->active_port, priv->phydev->addr);
+	printf("CA NI %s: phy_id=0x%x, phy_id & PHY_ID_MASK=0x%x\n", __func__,
+	       priv->phydev->phy_id, priv->phydev->phy_id & 0xFFFFFFF0);
+
+	/* parsing ethaddr and set to NI registers. */
+	ca_ni_setup_mac_addr();
+
+#ifdef MIIPHY_REGISTER
+	/* the phy_read and phy_write
+	 * should meet the proto type of miiphy_register
+	 */
+	miiphy_register(dev->name, ca_miiphy_read, ca_miiphy_write);
+#endif
+
+	if (priv->init_rgmii) {
+		/* hardware settings for RGMII port */
+		ca_rgmii_init(priv);
+	}
+
+	if (priv->gphy_num > 0) {
+		/* do internal gphy calibration */
+		ca_internal_gphy_cal(priv);
+	}
+	return 0;
+}
+
+static int ca_ni_of_to_plat(struct udevice *dev)
+{
+	int i, ret;
+	struct cortina_ni_priv *priv = dev_get_priv(dev);
+
+	memset(priv, 0, sizeof(struct cortina_ni_priv));
+	priv->glb_base_addr = dev_remap_addr_index(dev, 0);
+	if (!priv->glb_base_addr)
+		return -ENOENT;
+	printf("CA NI %s: priv->glb_base_addr for index 0 is 0x%p\n",
+	       __func__, priv->glb_base_addr);
+
+	priv->per_mdio_base_addr = dev_remap_addr_index(dev, 1);
+	if (!priv->per_mdio_base_addr)
+		return -ENOENT;
+	printf("CA NI %s: priv->per_mdio_base_addr for index 1 is 0x%p\n",
+	       __func__, priv->per_mdio_base_addr);
+
+	priv->ni_hv_base_addr = dev_remap_addr_index(dev, 2);
+	if (!priv->ni_hv_base_addr)
+		return -ENOENT;
+	printf("CA NI %s: priv->ni_hv_base_addr for index 2 is 0x%p\n",
+	       __func__, priv->ni_hv_base_addr);
+
+	priv->valid_port_map = dev_read_u32_default(dev, "valid-port-map", 1);
+	priv->valid_port_num = dev_read_u32_default(dev, "valid-port-num", 1);
+
+	for (i = 0; i < priv->valid_port_num; i++) {
+		ret = dev_read_u32_index(dev, "valid-ports", i * 2,
+					 &priv->port_map[i].phy_addr);
+		ret = dev_read_u32_index(dev, "valid-ports", (i * 2) + 1,
+					 &priv->port_map[i].port);
+	}
+
+	priv->gphy_num = dev_read_u32_default(dev, "inter-gphy-num", 1);
+	for (i = 0; i < priv->gphy_num; i++) {
+		ret = dev_read_u32_index(dev, "inter-gphy-val", i * 2,
+					 &priv->gphy_values[i].reg_off);
+		ret = dev_read_u32_index(dev, "inter-gphy-val", (i * 2) + 1,
+					 &priv->gphy_values[i].value);
+	}
+
+	priv->active_port = dev_read_u32_default(dev, "def-active-port", 1);
+	priv->init_rgmii = dev_read_u32_default(dev, "init-rgmii", 1);
+	priv->ni_xram_base = dev_read_u32_default(dev, "ni-xram-base", 1);
+	return 0;
+}
+
+static const struct eth_ops cortina_eth_ops = {
+	.start = cortina_eth_start,
+	.send = cortina_eth_send,
+	.recv = cortina_eth_recv,
+	.stop = cortina_eth_stop,
+};
+
+static const struct udevice_id cortina_eth_ids[] = {
+	{ .compatible = "eth_cortina" },
+	{ }
+};
+
+U_BOOT_DRIVER(eth_cortina) = {
+	.name = "eth_cortina",
+	.id = UCLASS_ETH,
+	.of_match = cortina_eth_ids,
+	.probe = cortina_eth_probe,
+	.ops = &cortina_eth_ops,
+	.priv_auto = sizeof(struct cortina_ni_priv),
+	.plat_auto = sizeof(struct eth_pdata),
+	.of_to_plat = ca_ni_of_to_plat,
+};
diff --git a/drivers/net/cortina_ni.h b/drivers/net/cortina_ni.h
new file mode 100644
index 0000000000..0ced4687cd
--- /dev/null
+++ b/drivers/net/cortina_ni.h
@@ -0,0 +1,401 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+/*
+ * Copyright (C) 2020 Cortina Access Inc.
+ * Author: Aaron Tseng <aaron.tseng@cortina-access.com>
+ *
+ * Ethernet MAC Driver for all supported CAxxxx SoCs
+ */
+
+#ifndef __CORTINA_NI_H
+#define __CORTINA_NI_H
+
+#include <asm/types.h>
+#include <asm/io.h>
+#include <config.h>
+
+#define GE_MAC_INTF_GMII                0x0
+#define GE_MAC_INTF_MII                 0x1
+#define GE_MAC_INTF_RGMII_1000          0x2
+#define GE_MAC_INTF_RGMII_100           0x3
+
+/* Defines the base and top address in CPU XRA
+ * for packets to cpu instance 0
+ * 0x300 * 8-byte = 6K-byte
+ */
+#define RX_TOP_ADDR			0x02FF
+#define RX_BASE_ADDR			0x0000
+
+/* Defines the base and top address in CPU XRAM
+ * for packets from cpu instance 0.
+ * 0x100 * 8-byte = 2K-byte
+ */
+#define TX_TOP_ADDR			0x03FF
+#define TX_BASE_ADDR			0x0300
+
+struct port_map_s {
+	u32 phy_addr;
+	u32 port;
+};
+
+struct gphy_cal_s {
+	u32 reg_off;
+	u32 value;
+};
+
+#if !defined(__ASSEMBLER__) && !defined(__ASSEMBLY__)
+struct cortina_ni_priv {
+	u32 ni_xram_base;
+	u32 rx_xram_base_adr;
+	u32 rx_xram_end_adr;
+	u16 rx_xram_start;
+	u16 rx_xram_end;
+	u32 tx_xram_base_adr;
+	u32 tx_xram_end_adr;
+	u16 tx_xram_start;
+	u16 tx_xram_end;
+	u32 valid_port_map;
+	u32 valid_port_num;
+	u32 init_rgmii;
+	u32 gphy_num;
+	struct port_map_s port_map[5];
+	struct gphy_cal_s gphy_values[10];
+	void __iomem *glb_base_addr;
+	void __iomem *per_mdio_base_addr;
+	void __iomem *ni_hv_base_addr;
+
+	struct mii_dev *mdio_bus;
+	struct phy_device *phydev;
+	int phy_interface;
+	int active_port;
+};
+
+struct NI_HEADER_X_T {
+	u32 next_link		: 10; /* bits  9: 0 */
+	u32 bytes_valid		:  4; /* bits 13:10 */
+	u32 reserved		: 16; /* bits 29:14 */
+	u32 hdr_a		:  1; /* bits 30:30 */
+	u32 ownership		:  1; /* bits 31:31 */
+};
+
+struct NI_PACKET_STATUS {
+	u32 packet_size       : 14; /* bits 13:0 */
+	u32 byte_valid        :  4; /* bits 17:14 */
+	u32 pfc               :  1; /* bits 18:18 */
+	u32 valid             :  1; /* bits 19:19 */
+	u32 drop              :  1; /* bits 20:20 */
+	u32 runt              :  1; /* bits 21:21 */
+	u32 oversize          :  1; /* bits 22:22 */
+	u32 jumbo             :  1; /* bits 23:23 */
+	u32 link_status       :  1; /* bits 24:24 */
+	u32 jabber            :  1; /* bits 25:25 */
+	u32 crc_error         :  1; /* bits 26:26 */
+	u32 pause             :  1; /* bits 27:27 */
+	u32 oam               :  1; /* bits 28:28 */
+	u32 unknown_opcode    :  1; /* bits 29:29 */
+	u32 multicast         :  1; /* bits 30:30 */
+	u32 broadcast         :  1; /* bits 31:31 */
+};
+
+struct NI_MDIO_OPER_T {
+	u32 reserved       : 2; /* bits  1:0 */
+	u32 reg_off        : 5; /* bits  6:2 */
+	u32 phy_addr       : 5; /* bits 11:7 */
+	u32 reg_base       : 20; /* bits 31:12 */
+};
+
+#define __MDIO_WR_FLAG				(0)
+#define __MDIO_RD_FLAG				(1)
+#define __MDIO_ACCESS_TIMEOUT			(1000000)
+#define CA_MDIO_ADDR_MIN			(1)
+#define CA_MDIO_ADDR_MAX			(31)
+
+#endif /* !__ASSEMBLER__ */
+
+/* HW REG */
+struct NI_HV_GLB_MAC_ADDR_CFG0_t {
+	u32 mac_addr0            : 32; /* bits 31:0 */
+};
+
+struct NI_HV_GLB_MAC_ADDR_CFG1_t {
+	u32 mac_addr1            :  8; /* bits 7:0 */
+	u32 rsrvd1               : 24;
+};
+
+struct NI_HV_PT_PORT_STATIC_CFG_t {
+	u32 int_cfg              :  4; /* bits 3:0 */
+	u32 phy_mode             :  1; /* bits 4:4 */
+	u32 rmii_clksrc          :  1; /* bits 5:5 */
+	u32 inv_clk_in           :  1; /* bits 6:6 */
+	u32 inv_clk_out          :  1; /* bits 7:7 */
+	u32 inv_rxclk_out        :  1; /* bits 8:8 */
+	u32 tx_use_gefifo        :  1; /* bits 9:9 */
+	u32 smii_tx_stat         :  1; /* bits 10:10 */
+	u32 crs_polarity         :  1; /* bits 11:11 */
+	u32 lpbk_mode            :  2; /* bits 13:12 */
+	u32 gmii_like_half_duplex_en :  1; /* bits 14:14 */
+	u32 sup_tx_to_rx_lpbk_data :  1; /* bits 15:15 */
+	u32 rsrvd1               :  8;
+	u32 mac_addr6            :  8; /* bits 31:24 */
+};
+
+struct NI_HV_XRAM_CPUXRAM_CFG_t {
+	u32 rx_0_cpu_pkt_dis     :  1; /* bits 0:0 */
+	u32 rsrvd1               :  8;
+	u32 tx_0_cpu_pkt_dis     :  1; /* bits 9:9 */
+	u32 rsrvd2               :  1;
+	u32 rx_x_drop_err_pkt    :  1; /* bits 11:11 */
+	u32 xram_mgmt_dis_drop_ovsz_pkt :  1; /* bits 12:12 */
+	u32 xram_mgmt_term_large_pkt :  1; /* bits 13:13 */
+	u32 xram_mgmt_promisc_mode :  2; /* bits 15:14 */
+	u32 xram_cntr_debug_mode :  1; /* bits 16:16 */
+	u32 xram_cntr_op_code    :  2; /* bits 18:17 */
+	u32 rsrvd3               :  2;
+	u32 xram_rx_mgmtfifo_srst :  1; /* bits 21:21 */
+	u32 xram_dma_fifo_srst   :  1; /* bits 22:22 */
+	u32 rsrvd4               :  9;
+};
+
+struct NI_HV_PT_RXMAC_CFG_t {
+	u32 rx_en                :  1; /* bits 0:0 */
+	u32 rsrvd1               :  7;
+	u32 rx_flow_disable      :  1; /* bits 8:8 */
+	u32 rsrvd2               :  3;
+	u32 rx_flow_to_tx_en     :  1; /* bits 12:12 */
+	u32 rx_pfc_disable       :  1; /* bits 13:13 */
+	u32 rsrvd3               : 15;
+	u32 send_pg_data         :  1; /* bits 29:29 */
+	u32 rsrvd4               :  2;
+};
+
+struct NI_HV_PT_TXMAC_CFG_t {
+	u32 tx_en                :  1; /* bits 0:0 */
+	u32 rsrvd1               :  7;
+	u32 mac_crc_calc_en      :  1; /* bits 8:8 */
+	u32 tx_ipg_sel           :  3; /* bits 11:9 */
+	u32 tx_flow_disable      :  1; /* bits 12:12 */
+	u32 tx_drain             :  1; /* bits 13:13 */
+	u32 tx_pfc_disable       :  1; /* bits 14:14 */
+	u32 tx_pau_sel           :  2; /* bits 16:15 */
+	u32 rsrvd2               :  9;
+	u32 tx_auto_xon          :  1; /* bits 26:26 */
+	u32 rsrvd3               :  1;
+	u32 pass_thru_hdr        :  1; /* bits 28:28 */
+	u32 rsrvd4               :  3;
+};
+
+struct NI_HV_GLB_INTF_RST_CONFIG_t {
+	u32 intf_rst_p0          :  1; /* bits 0:0 */
+	u32 intf_rst_p1          :  1; /* bits 1:1 */
+	u32 intf_rst_p2          :  1; /* bits 2:2 */
+	u32 intf_rst_p3          :  1; /* bits 3:3 */
+	u32 intf_rst_p4          :  1; /* bits 4:4 */
+	u32 mac_rx_rst_p0        :  1; /* bits 5:5 */
+	u32 mac_rx_rst_p1        :  1; /* bits 6:6 */
+	u32 mac_rx_rst_p2        :  1; /* bits 7:7 */
+	u32 mac_rx_rst_p3        :  1; /* bits 8:8 */
+	u32 mac_rx_rst_p4        :  1; /* bits 9:9 */
+	u32 mac_tx_rst_p0        :  1; /* bits 10:10 */
+	u32 mac_tx_rst_p1        :  1; /* bits 11:11 */
+	u32 mac_tx_rst_p2        :  1; /* bits 12:12 */
+	u32 mac_tx_rst_p3        :  1; /* bits 13:13 */
+	u32 mac_tx_rst_p4        :  1; /* bits 14:14 */
+	u32 port_rst_p5          :  1; /* bits 15:15 */
+	u32 pcs_rst_p6           :  1; /* bits 16:16 */
+	u32 pcs_rst_p7           :  1; /* bits 17:17 */
+	u32 mac_rst_p6           :  1; /* bits 18:18 */
+	u32 mac_rst_p7           :  1; /* bits 19:19 */
+	u32 rsrvd1               : 12;
+};
+
+struct NI_HV_GLB_STATIC_CFG_t {
+	u32 port_to_cpu          :  4; /* bits 3:0 */
+	u32 mgmt_pt_to_fe_also   :  1; /* bits 4:4 */
+	u32 txcrc_chk_en         :  1; /* bits 5:5 */
+	u32 p4_rgmii_tx_clk_phase :  2; /* bits 7:6 */
+	u32 p4_rgmii_tx_data_order :  1; /* bits 8:8 */
+	u32 rsrvd1               :  7;
+	u32 rxmib_mode           :  1; /* bits 16:16 */
+	u32 txmib_mode           :  1; /* bits 17:17 */
+	u32 eth_sch_rdy_pkt      :  1; /* bits 18:18 */
+	u32 rsrvd2               :  1;
+	u32 rxaui_mode           :  2; /* bits 21:20 */
+	u32 rxaui_sigdet         :  2; /* bits 23:22 */
+	u32 cnt_op_mode          :  3; /* bits 26:24 */
+	u32 rsrvd3               :  5;
+};
+
+struct GLOBAL_BLOCK_RESET_t {
+	u32 reset_ni             :  1; /* bits 0:0 */
+	u32 reset_l2fe           :  1; /* bits 1:1 */
+	u32 reset_l2tm           :  1; /* bits 2:2 */
+	u32 reset_l3fe           :  1; /* bits 3:3 */
+	u32 reset_sdram          :  1; /* bits 4:4 */
+	u32 reset_tqm            :  1; /* bits 5:5 */
+	u32 reset_pcie0          :  1; /* bits 6:6 */
+	u32 reset_pcie1          :  1; /* bits 7:7 */
+	u32 reset_pcie2          :  1; /* bits 8:8 */
+	u32 reset_sata           :  1; /* bits 9:9 */
+	u32 reset_gic400         :  1; /* bits 10:10 */
+	u32 rsrvd1               :  2;
+	u32 reset_usb            :  1; /* bits 13:13 */
+	u32 reset_flash          :  1; /* bits 14:14 */
+	u32 reset_per            :  1; /* bits 15:15 */
+	u32 reset_dma            :  1; /* bits 16:16 */
+	u32 reset_rtc            :  1; /* bits 17:17 */
+	u32 reset_pe0            :  1; /* bits 18:18 */
+	u32 reset_pe1            :  1; /* bits 19:19 */
+	u32 reset_rcpu0          :  1; /* bits 20:20 */
+	u32 reset_rcpu1          :  1; /* bits 21:21 */
+	u32 reset_sadb           :  1; /* bits 22:22 */
+	u32 rsrvd2               :  1;
+	u32 reset_rcrypto        :  1; /* bits 24:24 */
+	u32 reset_ldma           :  1; /* bits 25:25 */
+	u32 reset_fbm            :  1; /* bits 26:26 */
+	u32 reset_eaxi           :  1; /* bits 27:27 */
+	u32 reset_sd             :  1; /* bits 28:28 */
+	u32 reset_otprom         :  1; /* bits 29:29 */
+	u32 rsrvd3               :  2;
+};
+
+struct PER_MDIO_ADDR_t {
+	u32 mdio_addr            :  5; /* bits 4:0 */
+	u32 rsrvd1               :  3;
+	u32 mdio_offset          :  5; /* bits 12:8 */
+	u32 rsrvd2               :  2;
+	u32 mdio_rd_wr           :  1; /* bits 15:15 */
+	u32 mdio_st              :  1; /* bits 16:16 */
+	u32 rsrvd3               :  1;
+	u32 mdio_op              :  2; /* bits 19:18 */
+	u32 rsrvd4               : 12;
+};
+
+struct PER_MDIO_CTRL_t {
+	u32 mdiodone             :  1; /* bits 0:0 */
+	u32 rsrvd1               :  6;
+	u32 mdiostart            :  1; /* bits 7:7 */
+	u32 rsrvd2               : 24;
+};
+
+struct PER_MDIO_RDDATA_t {
+	u32 mdio_rddata          : 16; /* bits 15:0 */
+	u32 rsrvd1               : 16;
+};
+
+/* XRAM */
+
+struct NI_HV_XRAM_CPUXRAM_ADRCFG_RX_t {
+	u32 rx_base_addr         : 10; /* bits 9:0 */
+	u32 rsrvd1               :  6;
+	u32 rx_top_addr          : 10; /* bits 25:16 */
+	u32 rsrvd2               :  6;
+};
+
+struct NI_HV_XRAM_CPUXRAM_ADRCFG_TX_0_t {
+	u32 tx_base_addr         : 10; /* bits 9:0 */
+	u32 rsrvd1               :  6;
+	u32 tx_top_addr          : 10; /* bits 25:16 */
+	u32 rsrvd2               :  6;
+};
+
+struct NI_HV_XRAM_CPUXRAM_CPU_STA_RX_0_t {
+	u32 pkt_wr_ptr           : 10; /* bits 9:0 */
+	u32 rsrvd1               :  5;
+	u32 int_colsc_thresh_reached :  1; /* bits 15:15 */
+	u32 rsrvd2               : 16;
+};
+
+struct NI_HV_XRAM_CPUXRAM_CPU_CFG_RX_0_t {
+	u32 pkt_rd_ptr           : 10; /* bits 9:0 */
+	u32 rsrvd1               : 22;
+};
+
+struct NI_HV_XRAM_CPUXRAM_CPU_CFG_TX_0_t {
+	u32 pkt_wr_ptr           : 10; /* bits 9:0 */
+	u32 rsrvd1               : 22;
+};
+
+struct GLOBAL_GLOBAL_CONFIG_t {
+	u32 rsrvd1               :  4;
+	u32 wd_reset_subsys_enable :  1; /* bits 4:4 */
+	u32 rsrvd2               :  1;
+	u32 wd_reset_all_blocks  :  1; /* bits 6:6 */
+	u32 wd_reset_remap       :  1; /* bits 7:7 */
+	u32 wd_reset_ext_reset   :  1; /* bits 8:8 */
+	u32 ext_reset            :  1; /* bits 9:9 */
+	u32 cfg_pcie_0_clken     :  1; /* bits 10:10 */
+	u32 cfg_sata_clken       :  1; /* bits 11:11 */
+	u32 cfg_pcie_1_clken     :  1; /* bits 12:12 */
+	u32 rsrvd3               :  1;
+	u32 cfg_pcie_2_clken     :  1; /* bits 14:14 */
+	u32 rsrvd4               :  2;
+	u32 ext_eth_refclk       :  1; /* bits 17:17 */
+	u32 refclk_sel           :  2; /* bits 19:18 */
+	u32 rsrvd5               :  7;
+	u32 l3fe_pd              :  1; /* bits 27:27 */
+	u32 offload0_pd          :  1; /* bits 28:28 */
+	u32 offload1_pd          :  1; /* bits 29:29 */
+	u32 crypto_pd            :  1; /* bits 30:30 */
+	u32 core_pd              :  1; /* bits 31:31 */
+};
+
+struct GLOBAL_IO_DRIVE_CONTROL_t {
+	u32 gmac_dp              :  3; /* bits 2:0 */
+	u32 gmac_dn              :  3; /* bits 5:3 */
+	u32 gmac_mode            :  2; /* bits 7:6 */
+	u32 gmac_ds              :  1; /* bits 8:8 */
+	u32 flash_ds             :  1; /* bits 9:9 */
+	u32 nu_ds                :  1; /* bits 10:10 */
+	u32 ssp_ds               :  1; /* bits 11:11 */
+	u32 spi_ds               :  1; /* bits 12:12 */
+	u32 gpio_ds              :  1; /* bits 13:13 */
+	u32 misc_ds              :  1; /* bits 14:14 */
+	u32 eaxi_ds              :  1; /* bits 15:15 */
+	u32 sd_ds                :  8; /* bits 23:16 */
+	u32 rsrvd1               :  8;
+};
+
+struct NI_HV_GLB_INIT_DONE_t {
+	u32 rsrvd1               :  1;
+	u32 ni_init_done         :  1; /* bits 1:1 */
+	u32 rsrvd2               : 30;
+};
+
+struct NI_HV_PT_PORT_GLB_CFG_t {
+	u32 speed                :  1; /* bits 0:0 */
+	u32 duplex               :  1; /* bits 1:1 */
+	u32 link_status          :  1; /* bits 2:2 */
+	u32 link_stat_mask       :  1; /* bits 3:3 */
+	u32 rsrvd1               :  7;
+	u32 power_dwn_rx         :  1; /* bits 11:11 */
+	u32 power_dwn_tx         :  1; /* bits 12:12 */
+	u32 tx_intf_lp_time      :  1; /* bits 13:13 */
+	u32 rsrvd2               : 18;
+};
+
+#define NI_HV_GLB_INIT_DONE_OFFSET                      0x004
+#define NI_HV_GLB_INTF_RST_CONFIG_OFFSET                0x008
+#define NI_HV_GLB_STATIC_CFG_OFFSET                     0x00c
+
+#define NI_HV_PT_PORT_STATIC_CFG_OFFSET                 NI_HV_PT_BASE
+#define NI_HV_PT_PORT_GLB_CFG_OFFSET                    (0x4 + NI_HV_PT_BASE)
+#define NI_HV_PT_RXMAC_CFG_OFFSET                       (0x8 + NI_HV_PT_BASE)
+#define NI_HV_PT_TXMAC_CFG_OFFSET                       (0x14 + NI_HV_PT_BASE)
+
+#define NI_HV_XRAM_CPUXRAM_ADRCFG_RX_OFFSET             NI_HV_XRAM_BASE
+#define NI_HV_XRAM_CPUXRAM_ADRCFG_TX_0_OFFSET           (0x4 + NI_HV_XRAM_BASE)
+#define NI_HV_XRAM_CPUXRAM_CFG_OFFSET                   (0x8 + NI_HV_XRAM_BASE)
+#define NI_HV_XRAM_CPUXRAM_CPU_CFG_RX_0_OFFSET          (0xc + NI_HV_XRAM_BASE)
+#define NI_HV_XRAM_CPUXRAM_CPU_STA_RX_0_OFFSET          (0x10 + NI_HV_XRAM_BASE)
+#define NI_HV_XRAM_CPUXRAM_CPU_CFG_TX_0_OFFSET          (0x24 + NI_HV_XRAM_BASE)
+#define NI_HV_XRAM_CPUXRAM_CPU_STAT_TX_0_OFFSET         (0x28 + NI_HV_XRAM_BASE)
+
+#define PER_MDIO_CFG_OFFSET                             0x00
+#define PER_MDIO_ADDR_OFFSET                            0x04
+#define PER_MDIO_WRDATA_OFFSET                          0x08
+#define PER_MDIO_RDDATA_OFFSET                          0x0C
+#define PER_MDIO_CTRL_OFFSET                            0x10
+
+#define APB0_NI_HV_PT_STRIDE				160
+
+#endif /* __CORTINA_NI_H */